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PIC16LF83T-04/SO - 4MHz 8-bit FLASH MCU 18-SOIC | Microchip
PIC16LF83T-04/SO

PIC16LF83T-04/SO - 4MHz 8-bit FLASH MCU 18-SOIC | Microchip

The Microchip Technology PIC16LF83T-04/SO is an 8-bit RISC flash microcontroller with 4 MHz maximum clock speed, 896 bytes of FLASH program memory (512 x 14 words), 36 bytes of RAM, and 13 digital I/O pins, housed in an 18-pin SOIC wide-body package with tape-and-reel packaging. The "LF" suffix denotes the low-voltage variant supporting an operating voltage range of 2.0 V to 6.0 V, making it compatible with both 3.3 V and 5 V system rails. The "T" indicates tape-and-reel packaging, and the "-04" denotes the 4 MHz oscillator option. A PIC microcontroller (Programmable Interface Controller) is a family of 8-bit RISC-based microcontrollers originally developed by General Instrument's Microelectronics Division and now produced by Microchip Technology. PIC MCUs belong to the broader hierarchy: microcontroller -> embedded controller -> semiconductor IC, and they are widely used for low-cost, low-power embedded control applications. The PIC16F family was the first FLASH-based PIC16 architecture, replacing the older OTP and windowed EPROM variants, and provides in-system self-programmability for firmware updates. Key features include a 14-bit instruction set, 35 single-word instructions at 200 ns execution time, two 8-bit timers (Timer0, Timer2) and one 16-bit timer (Timer1), a watchdog timer with on-chip RC oscillator, 8-bit ADC channel option via shared I/O, internal 4 MHz RC oscillator, and an integrated power-on reset / brown-out reset / MCLR circuit. The peripheral set also includes a synchronous serial port (SSP) supporting SPI and I2C master/slave modes. The PIC16LF83T-04/SO is built around a Harvard-architecture RISC CPU with separate program and data buses, an 8-level deep hardware stack, and direct/indirect addressing modes. The 35-instruction RISC core provides predictable timing suitable for real-time embedded control, and the integrated ICE (In-Circuit Emulator) debug interface allows developers to debug firmware directly on the target board using Microchip's MPLAB ICD tools. Typical applications include low-cost consumer appliances, sensor signal conditioning nodes, battery-powered remote controllers, LED lighting drivers, simple industrial control logic, and educational microcontroller projects. The 18-SOIC wide-body package provides easy hand-soldering and breadboard-friendly footprints, while the wide 2.0-6.0 V supply range simplifies battery- and USB-powered designs. When designing with this device, allocate a 4-pin ICSP header (VDD, VSS, MCLR, RB7, RB6) for in-circuit serial programming and consider using an internal 4 MHz oscillator to reduce BOM cost. The 13 I/O pins share analog functions, so plan pin assignments carefully if the ADC is used, and reserve a free timer-capable pin (e.g., RB4-RB7) for PWM or event-count applications. This page synthesizes distributor pricing, parametric specifications, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone. Engineers searching for a direct PIC16F83 or PIC16LF83 replacement in SOIC-18 will find verified drop-in candidates and a side-by-side comparison here.

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PIC16LF84-04/P - 4MHz 8-Bit Flash MCU, 1.75KB | Microchip
PIC16LF84-04/P

PIC16LF84-04/P - 4MHz 8-Bit Flash MCU, 1.75KB | Microchip

The Microchip PIC16LF84-04/P is an 8-bit CMOS flash-based RISC microcontroller in an 18-pin PDIP (DIP-18) package, rated for 4 MHz operation across a wide 2.0V to 5.5V supply range. It integrates 1.75KB (1K x 14 words) of flash program memory, 68 bytes of RAM, 64 bytes of EEPROM data memory, and 13 digital I/O pins. The 'LF' prefix designates the low-voltage / low-power variant of the classic PIC16F84 family, enabling battery-friendly operation from a single-cell lithium or two-AA supply. What is a PIC16 microcontroller? A PIC16 is an 8-bit RISC microcontroller from Microchip's PIC (Peripheral Interface Controller) family - a Harvard-architecture MCU family that sits within the broader class of microcontrollers, embedded processors, and semiconductors. PIC16 devices execute one instruction per clock cycle (except branches), have a small instruction set of 35 instructions, and offer deterministic interrupt response - making them a long-standing industry workhorse for control applications. Key features of the PIC16LF84-04/P include 13 bidirectional I/O pins individually selectable for direction, a power-on reset (POR) and watchdog timer (WDT), an in-circuit serial programming (ICSP) interface, an 8-bit timer/counter (TMR0) with 8-bit prescaler, and a 10-bit + 2-bit capture/compare/PWM module (CCP). Brown-out reset and power-saving SLEEP mode are also integrated. The '04' speed suffix specifies a 4 MHz maximum clock; the 'LF' package designator specifies the low-voltage silicon. Architecturally, PIC16LF84 uses a 14-bit instruction word with separate program and data buses, allowing the CPU and EEPROM/flash controller to operate in parallel. The 8-level-deep hardware stack supports structured subroutines and interrupts, and the integrated RC oscillator option reduces external BOM. Typical applications include hobbyist / education boards (the basis of countless Arduino precursors), simple sensor interfaces, low-power remote controls, LED drivers, and small appliance controllers. The flash memory and ICSP let designers iterate firmware in-circuit without UV-erasing windowed parts. When designing with this part, add a 0.1uF ceramic decoupling capacitor within 5 mm of VDD, reserve MCLR (pin 4) for in-circuit programming, and observe the 4 MHz oscillator limit. SLEEP current is well under 1uA, making this part a frequent choice for battery-backed IoT nodes and intrusion-detection devices that wake on interrupt. This page consolidates distributor pricing, pinout, and same-package drop-in alternatives beyond what the manufacturer datasheet alone provides - including verified recommendations for engineers migrating to PIC16F84A or sourcing lower-cost PIC16LF83 variants.

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PIC16LF84-04I/SO - 4MHz 8-bit Flash MCU 1.75KB | Microchip
PIC16LF84-04I/SO

PIC16LF84-04I/SO - 4MHz 8-bit Flash MCU 1.75KB | Microchip

The Microchip PIC16LF84-04I/SO is an 8-bit PIC16-family flash/EEPROM microcontroller delivering 4 MHz maximum clock input (200 ns instruction cycle) from a 1.75 KB (1K x 14) program Flash and 68 bytes of RAM, housed in an 18-pin SOIC (SO) package. According to the Microchip datasheet (DS35007), the device executes one instruction per cycle (except program branches which take two cycles) and supports 35 single-word instructions in a RISC architecture, providing predictable deterministic execution in embedded applications. An 8-bit PIC microcontroller (MCU) is a small, low-power, single-chip computer built around a Harvard RISC core. It integrates CPU, non-volatile program memory (Flash), volatile data memory (RAM), non-volatile EEPROM data, and peripherals (I/O, timers, interrupts) into one IC. PIC16 MCUs sit in the PIC mid-range family between 8-pin baseline devices and 16-bit dsPIC parts, forming the workhorse tier of Microchip's 8-bit MCU lineup for general-purpose embedded control. Key features include 13 digital I/O pins, 64 bytes of EEPROM data memory, a 14-bit instruction word, a hardware 8-bit timer/counter (TMR0) with watchdog, four oscillator modes (RC, LP, XT, HS), and an industrial temperature range of -40C to +85C. The "LF" voltage range supports 2.0V to 5.5V operation, enabling battery-powered designs, while the "-04" speed grade specifies a 4 MHz oscillator maximum and the "I" suffix marks the industrial temperature grade. The PIC16LF84 architecture uses a 14-bit wide Flash program path and an 8-bit data path, with a separate 8-bit-wide EEPROM array. The Harvard bus and single-cycle instruction fetch deliver deterministic throughput important for time-sensitive tasks such as bit-banged protocols or fixed-frequency PWM control. Brown-out and power-on reset, plus the watchdog timer, give the LF84 robust autonomous startup and recovery behavior for unattended sensors and appliances. Typical applications include low-power remote sensors, hobbyist/learner boards (the LF84 is the classic Microchip training part), battery-backed appliance controllers, simple logic-replacement glue, and legacy industrial control retrofits. Designers also pick this part when migrating older PIC16C5x/PIC16F84A firmware forward into a low-voltage variant. When designing, observe the recommended 1uF/22pF power decoupling layout and place a 33 pF to 10 pF capacitor on OSC1/OSC2 for crystal oscillator mode. Ensure Vdd rise time for the power-on reset stays within the datasheet limits, and reserve one I/O pin for the MCLR/Vpp programming interface if in-circuit serial programming is required. This page synthesizes distributor stock, parametric drop-in alternatives in the same 18-SOIC footprint, and practical design considerations that go beyond what the manufacturer datasheet alone provides.

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PIC16LF84A-04/P - 4MHz 1.75KB Flash 8-bit MCU | Microchip
PIC16LF84A-04/P

PIC16LF84A-04/P - 4MHz 1.75KB Flash 8-bit MCU | Microchip

The Microchip Technology PIC16LF84A-04/P is a low-power CMOS 8-bit Flash/EEPROM microcontroller belonging to the PIC16CXX mid-range family, featuring 4 MHz maximum operating frequency, 1.75 KB (1K x 14) of Flash program memory, 68 bytes of RAM, and 64 bytes of EEPROM data memory. It is housed in a through-hole 18-pin PDIP package operating from 2.0V to 5.5V. The LF prefix denotes the low-voltage variant designed for battery-powered and portable designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals into one silicon die. The PIC16F family uses Microchip's enhanced mid-range RISC architecture, executing one instruction per instruction cycle (200 ns at 4 MHz) from a 14-bit-wide instruction word. Hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. Key features include 13 general-purpose digital I/O pins, a 10-bit interrupt-driven ADC-free design (no on-chip ADC), hardware USART support, and an 8-bit timer/counter with a programmable prescaler. The device offers 35 single-word instructions, 8-level hardware stack, and in-circuit serial programming (ICSP) via two pins. Power-on reset, brown-out detect, and a watchdog timer with on-chip RC oscillator improve field reliability. Architecturally, the PIC16LF84A uses Harvard bus architecture with separate program and data paths, allowing instruction fetch and data access to occur in the same cycle. The LF silicon supports full-speed operation down to 2.0V, which is critical for 2xAA battery systems. Per Microchip documentation, code written for the original PIC16F84A is binary-compatible with the LF84A, simplifying legacy code migration. Typical applications include battery-powered sensor nodes, hobby/educational platforms (the PIC16F84 lineage is a foundational teaching device), simple motor-control logic, low-speed UART bridges, EEPROM-backed parameter storage nodes, and replacement of legacy PIC16F84A designs in industrial equipment. The 13 I/O easily drive LEDs, relays, and small character LCDs. When designing with this part, ensure your supply stays above 2.0V at all load transients to avoid brown-out reset; add a 0.1 uF decoupling capacitor close to VDD with a bulk 10 uF electrolytic on the power rail. Note that the PIC16LF84A has NO on-chip ADC - external ADC is required for analog sensing. This page synthesizes distributor pricing, drop-in PIC16 family alternatives, and practical design notes not found in the standalone manufacturer datasheet, helping engineers select the correct pin-compatible replacement or migration path for legacy 16F84 designs.

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PIC16LF84A-04/SO - 4MHz 8-Bit Flash MCU, 1.75KB | Microchip
PIC16LF84A-04/SO

PIC16LF84A-04/SO - 4MHz 8-Bit Flash MCU, 1.75KB | Microchip

The Microchip Technology PIC16LF84A-04/SO is an 8-bit RISC Flash/EEPROM microcontroller from the PIC16F family, featuring 1.75KB (1K x 14 words) of program memory, 68 bytes of RAM, and 64 bytes of EEPROM data memory, housed in an 18-pin SOIC (SO) package. The device operates at a maximum clock speed of 4 MHz and supports the legacy PIC mid-range instruction set with 35 single-word instructions for compact code generation. Supply voltage spans 2.0V to 5.5V across the LF (low-power) variant. A microcontroller (MCU) is a single-chip computer containing a CPU, RAM, non-volatile program memory, and programmable I/O peripherals. The PIC16F family belongs to the 8-bit microcontroller hierarchy (8-bit MCU -> RISC MCU -> embedded controller -> semiconductor), with the 'LF' prefix denoting the low-voltage F-process technology optimized for battery-powered and energy-harvesting designs. PIC microcontrollers are widely used in education and low-cost embedded systems thanks to their deterministic architecture and free MPLAB X toolchain. Key features of the PIC16LF84A-04/SO include a 4 MHz maximum oscillator frequency, 13 digital I/O pins with individual direction control, a 14-bit instruction word, an 8-bit timer/counter (Timer0) with 8-bit prescaler, an 8-bit Timer2 with prescaler and postscaler, a watchdog timer with its own on-chip RC oscillator, and an ICD (In-Circuit Debugger) interface on higher-pin-count variants. The 18-pin SOIC package provides a 7.5 mm (0.300 inch) body width suitable for hand-soldered prototypes and surface-mount production. The device uses a Harvard architecture with separate program and data buses, executing one instruction per four clock cycles. Internal RC oscillator options support cost-sensitive designs without external crystals. The 64-byte EEPROM is byte-erasable and rated for typical endurance of 1 million write cycles per cell, making the part suitable for applications requiring non-volatile parameter storage without external serial EEPROMs. Typical applications include hobbyist electronics projects, automotive interior accessories (sensor interfaces, simple lighting controllers), industrial control panels (push-button interfaces, LED indicators, low-speed relay drivers), educational development boards, battery-powered sensor nodes, low-rate UART-based data logging, and replacement of legacy PIC16F84 designs in production. The wide 2.0-5.5V range supports both 3.3V and 5V systems. When designing with this MCU, note that the LF84A-04 variant is the 4 MHz grade; the -04I and -10 suffixes denote industrial temperature range (or 10 MHz). Ensure the in-circuit serial programming (ICSP) header is accessible for field firmware updates, and that the MCLR pin is properly pulled up through a resistor to VDD. This page consolidates distributor pricing, pin-compatible alternatives, and engineering notes not found in the manufacturer datasheet alone.

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PIC16LF84A-04/SS - 8-bit 4MHz 1.75KB Flash MCU 20-SSOP | Microchip
PIC16LF84A-04/SS

PIC16LF84A-04/SS - 8-bit 4MHz 1.75KB Flash MCU 20-SSOP | Microchip

The Microchip Technology PIC16LF84A-04/SS is an 8-bit CMOS Flash/EEPROM-based RISC microcontroller packaged in a 20-pin SSOP (Shrink Small Outline Package). It operates from 1.8 V to 3.6 V supply, runs at up to 4 MHz clock speed, integrates 1.75 KB (1K x 14 words) of Flash program memory plus 68 bytes of RAM and 64 bytes of EEPROM data memory, and provides 13 digital I/O pins. The part is a member of Microchip's PIC16F8X mid-range family, employing a Harvard RISC core with only 35 single-word instructions, enabling 200 ns instruction execution at 4 MHz. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, RAM, I/O peripherals, and timers onto one silicon die. The PIC16 family belongs to the mid-range 8-bit tier in the broader taxonomy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. Within the PIC portfolio, mid-range parts are designed for low-power, cost-sensitive applications and serve as the workhorse for consumer, industrial, and educational designs. Key features include a wide operating voltage range of 1.8 V to 3.6 V, low-power CMOS technology suitable for battery operation, an internal oscillator option on the LF variant, a 10-bit timer/counter, a Watchdog Timer with on-chip RC oscillator, in-circuit serial programming (ICSP), and 8-bit parallel slave port. The device supports in-system programming through two pins, allowing firmware updates after PCB assembly. The PIC16LF84A architecture separates program and data buses (Harvard), and the LF variant extends supply down to 1.8 V for portable and battery-powered designs. Its 4 MHz maximum clock rate, 14-bit instruction word, and a deep 8-level hardware stack give it predictable interrupt performance for time-critical control loops. Typical applications include low-power remote sensors, battery-powered consumer devices, HVAC controls, simple motor control, LED drivers, learning platforms, hobbyist projects, and replacement of legacy PIC16F84A designs in industrial controllers. The 20-SSOP footprint offers a compact alternative to the 18-pin DIP/PDIP and 18-pin SOIC variants of the same die. When designing, note that the LF version's 1.8 V minimum supply is required for low-voltage operation; the standard 'F' (non-L) variant operates at 2.0 V to 5.5 V. Pin-compatible migration between 18-pin and 20-pin SSOP packages requires PCB adaptation due to differing pin counts. This page synthesizes distributor stock, same-family Microchip alternatives, and practical design notes not aggregated in the manufacturer datasheet alone.

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PIC16LF84A-04I/P - 4MHz 1.75KB Flash 8-bit MCU | Microchip
PIC16LF84A-04I/P

PIC16LF84A-04I/P - 4MHz 1.75KB Flash 8-bit MCU | Microchip

The Microchip Technology PIC16LF84A-04I/P is a low-power 8-bit CMOS Flash/EEPROM microcontroller from the PIC16 mid-range family, delivering 4 MHz maximum operating frequency with 1.75 KB (1K x 14) of program memory and 68 bytes of RAM in a through-hole 18-pin PDIP package. The device is the LF (low-voltage, 1.8V to 3.6V) variant of the PIC16F84A family, optimized for battery-powered and portable designs while retaining full pin-to-pin compatibility with the 5V PIC16F84A-04I/P. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory (Flash/ROM/EEPROM), and peripherals on one silicon die. The PIC16 mid-range family uses Microchip's RISC architecture with only 35 single-word instructions, where every instruction executes in a single instruction cycle (200 ns at 4 MHz) except for program branches which take two cycles. This positions the PIC16LF84A in the broader hierarchy: microcontroller -> embedded MCU -> semiconductor IC. Key features include 13 digital I/O pins, 64 bytes of EEPROM data memory, a 15-bit programmable timer/counter (TMR0) with 8-bit prescaler, a watchdog timer for reliable unattended operation, in-circuit serial programming (ICSP) for field updates, and power-on reset with brown-out detection. The 04 speed grade designates a 4 MHz maximum oscillator input, distinguishing it from the 20 MHz 20-grade variants. The LF suffix guarantees 1.8V to 3.6V operation across the industrial temperature range (-40C to +85C, I grade). Typical applications include battery-powered sensor interfaces, simple control logic, low-speed automation nodes, automotive body modules, and educational/hobbyist platforms where the PIC's RISC architecture and broad compiler support (MPASM, XC8) minimize firmware complexity. The wide operating voltage makes the LF84A particularly suited for 2-cell battery or regulated 3.3V rails. When designing with this MCU, ensure your code fits within the 1K x 14 word Flash and that interrupts use the single-vector scheme typical of mid-range PICs. For higher speed, larger memory, or modern peripherals, migrate to the PIC16F1xx or PIC16F18xx families; for ultra-low-power, consider the PIC16LF153xx. This page synthesizes current distributor pricing, verified drop-in alternatives, and practical design notes that complement, rather than duplicate, the Microchip datasheet.

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PIC16LF84A-04I/SO - 4MHz 8-bit Flash MCU, 1.75KB | Microchip
PIC16LF84A-04I/SO

PIC16LF84A-04I/SO - 4MHz 8-bit Flash MCU, 1.75KB | Microchip

The Microchip PIC16LF84A-04I/SO is an 8-bit RISC flash microcontroller from the PIC16F family, operating at up to 4 MHz with 1.75 KB (1K x 14) of on-chip program Flash memory, 68 bytes of RAM, and 13 general-purpose I/O pins, housed in a 18-pin SOIC package. Its 'LF' designation indicates a low-voltage (2.0 V–5.5 V) CMOS process node optimized for battery-powered designs, while the '04' speed suffix denotes the 4 MHz maximum oscillator frequency variant, and 'I' specifies the industrial temperature grade (-40 °C to +85 °C). The 'SO' suffix identifies the 300-mil 18-SOIC surface-mount package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and peripheral interfaces onto one die. Within the broader semiconductor hierarchy it sits under: microcontroller -> embedded processor -> digital IC -> semiconductor. The PIC16F architecture specifically uses a RISC-style Harvard design with only 35 single-word instructions, allowing most instructions to execute in one instruction cycle, which simplifies assembly coding and enables predictable timing for bit-banged protocols. Key features of the PIC16LF84A-04I/SO include 1024 words (14-bit) of self-programmable Flash, 64 bytes of EEPROM data memory, a 15-bit hardware stack, an 8-bit timer/counter (TMR0) with an 8-bit prescaler, a Watchdog Timer with its own on-chip RC oscillator, and a 13-bit instruction word bus. The device supports in-circuit serial programming (ICSP) via two pins, enabling firmware updates after PCB assembly without removing the part. Architecturally, the PIC16LF84A employs CMOS technology with static (fully static) operation, meaning the clock can be stopped and the device will retain state without consuming dynamic power. The wide operating voltage (2.0 V–5.5 V) and low-power SLEEP mode (typical standby current in the microamp range per Microchip datasheet DC characteristics) make it well suited to battery and energy-harvesting applications. The Harvard bus separates program and data paths, allowing instruction fetch and operand read to overlap. Typical applications include low-power embedded control nodes, sensor interface front-ends, simple user-interface controllers (button + LED), automotive interior accessories, industrial remote-control boards, and legacy educational/development platforms where a 5 V-tolerant, easy-to-program 8-bit MCU is preferred over newer 32-bit parts. When designing with this device, note that the Flash endurance (per Microchip datasheet DS35007B specification) and EEPROM endurance (typically 1M write/erase cycles) are finite—wear-leveling or minimization of EEPROM writes extends field life. The 4 MHz oscillator ceiling limits compute-intensive tasks; for higher throughput choose a PIC16F1xxx or PIC18 part. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers evaluate the PIC16LF84A-04I/SO against modern pin-compatible replacements.

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PIC16LF84A-04I/SS - 4MHz 1.75KB Flash 8-bit MCU | Microchip
PIC16LF84A-04I/SS

PIC16LF84A-04I/SS - 4MHz 1.75KB Flash 8-bit MCU | Microchip

The Microchip Technology PIC16LF84A-04I/SS is a low-power, 8-bit CMOS Flash/EEPROM-based RISC microcontroller in a 20-pin SSOP (Shrink Small Outline Package) with 4 MHz maximum clock input, 1.75 KB (1K x 14) of Flash program memory and 68 bytes of SRAM data memory. It exposes 13 digital I/O pins, runs all 35 single-word instructions in 200 ns (one instruction cycle) except program branches which take two cycles, and supports in-circuit serial programming (ICSP) via the RB6/RB7 pins. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, on-chip program memory, on-chip data RAM, and a small set of peripheral registers. It belongs to the broader hierarchy of embedded computing devices: microcontroller -> microprocessor with peripherals -> CPU; it sits below 16-bit and 32-bit MCUs in raw throughput but above purely hardware state machines in flexibility. The PIC16F8X family, including the PIC16LF84A, is widely taught in introductory embedded courses because it has only 35 instructions, an 8-level hardware stack, and a Harvard architecture that separates program and data buses. The LF (low-power) variant operates across 2.0 V to 5.5 V supply and offers brown-out reset, a programmable watchdog timer, an on-chip 8-bit timer/counter (TMR0) with 8-bit prescaler, and 64 bytes of non-volatile EEPROM data memory. The /SS suffix denotes the 20-pin SSOP package, while the -04 speed grade marks a 4 MHz maximum oscillator input and the I suffix indicates the industrial temperature range of -40 C to +85 C. The 20-pin SSOP provides 13 I/O plus VDD, VSS, MCLR and OSC1/OSC2 pins. Typical applications include battery-powered sensor nodes, consumer appliance controllers, hobby and education boards, low-cost user-interface controllers, and small logic-replacement designs that benefit from in-system reprogrammability. When designing with this device, place a 100 nF decoupling capacitor close to VDD and route the MCLR pin through a 10 kohm pull-up to VDD to allow clean in-circuit serial programming. Avoid leaving unused I/O pins floating - configure them as outputs to minimize current draw in sleep mode.

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PIC16LF84AT-04/SO - 4MHz 8-bit Flash MCU, 18-SOIC | Microchip
PIC16LF84AT-04/SO

PIC16LF84AT-04/SO - 4MHz 8-bit Flash MCU, 18-SOIC | Microchip

The Microchip Technology PIC16LF84AT-04/SO is a low-power, 8-bit CMOS Flash microcontroller from the PIC16CXX family operating at 4MHz with 1.75KB (1K x 14) of Flash program memory, 68 bytes of RAM, and 64 bytes of EEPROM, housed in an 18-pin SOIC package supplied on Tape & Reel. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), non-volatile storage (EEPROM), and peripherals such as timers, interrupts, and I/O ports into one IC. PIC microcontrollers use a RISC (Reduced Instruction Set Computer) architecture with a small, fixed-length instruction set (typically 35 instructions), which simplifies decoding and enables deterministic timing — important for embedded control. The PIC16F84A specifically belongs to the PIC16 mid-range family and was one of the most widely adopted Flash microcontrollers of its generation, favored for its simplicity, low cost, and built-in EEPROM. Key features of the PIC16LF84AT-04/SO include 13 digital I/O pins, an instruction cycle time of 200ns at 4MHz (4 MHz oscillator / 4), 64 bytes of on-chip data EEPROM, 1.75KB Flash program memory, a 14-bit instruction word, and Microchip's nanoWatt technology for low-power operation. The 18-SOIC wide-body package supports standard surface-mount assembly and is compatible with hand-soldering as well as reflow processes. From a technical depth perspective, the device includes a watchdog timer (WDT) for runaway code recovery, Power-On Reset (POR) for deterministic cold-start behavior, brown-out detection, an 8-bit timer/counter (Timer0), and a high-endurance Flash/EEPROM program memory rated for thousands of write cycles. The 'LF' suffix indicates a low-voltage variant operating from 2.0V to 5.5V, while the 'T' suffix denotes tape-and-reel packaging, and '04' indicates the 4MHz speed grade. Typical applications include hobbyist electronics and education platforms, simple sensor interfaces, low-cost consumer appliances, replacement of legacy discrete logic, and embedded control nodes. Its combination of Flash, RAM, and EEPROM on a single chip makes it a classic solution for designs that need a small amount of non-volatile data storage alongside program execution. When designing with the PIC16LF84AT-04/SO, ensure your programmer/debugger is compatible (such as the PICkit 3 or MPLAB ICD), reserve the MCLR pin for reset, and place decoupling capacitors close to VDD/VSS. This part is now considered legacy — verify long-term availability before using in new designs. This page synthesizes distributor pricing, drop-in alternative cross-references, and practical design notes not typically found in the manufacturer datasheet alone.

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PIC16LF84AT-04/SS - 8-bit PIC MCU, 1.75KB Flash, 4MHz, SSOP-20 | Microchip
PIC16LF84AT-04/SS

PIC16LF84AT-04/SS - 8-bit PIC MCU, 1.75KB Flash, 4MHz, SSOP-20 | Microchip

The Microchip Technology PIC16LF84AT-04/SS is an 8-bit RISC flash microcontroller from the PIC16F8X family, delivering 1.75KB of on-chip flash program memory, 68 bytes of RAM, and 64 bytes of EEPROM data memory in a 20-pin SSOP package. It runs up to 4MHz clock input (200ns instruction cycle at 20MHz equivalent, 400ns at 4MHz) from a wide 2.0V to 5.5V supply range and provides 13 general-purpose digital I/O pins. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O into one package. The PIC16F84A belongs to the PIC16 family of 8-bit microcontrollers and sits in the broader taxonomy of microcontrollers -> microprocessors -> semiconductor ICs. Harvard architecture and a 14-bit wide instruction word give this family its single-cycle RISC performance. Key features include 35 single-word instructions, a hardware 8-bit timer/counter (TMR0) with an 8-bit prescaler, a 10-bit resolution capture/compare/PWM (CCP) peripheral, a watchdog timer with on-chip RC oscillator, an internal 4MHz RC oscillator option, and an ICD (In-Circuit Debugger) interface. The 20-pin SSOP (Shrink Small Outline Package, 0.209 inch / 5.30mm body width) supports surface-mount assembly on compact boards. The architecture combines a 14-bit instruction word with separate program and data buses (Harvard), allowing instruction fetch and data access to occur in the same cycle. With only 35 single-word instructions to learn, code density and development time are both favorable for low-cost embedded designs. The internal 4MHz oscillator and configurable oscillator modes eliminate the need for external crystals in many low-cost designs, further reducing BOM cost. Typical applications include consumer appliance controls, sensor interface boards, low-cost industrial controllers, hobbyist/educational projects, replacement of legacy 8051 designs, and battery-powered smart devices where the LF (low-voltage, low-power) silicon is important. The 2.0V minimum supply allows direct operation from a single Li-ion cell when paired with a low-dropout boost regulator. When designing with this device, ensure decoupling capacitors are placed within 5mm of the VDD pin, and that the MCLR reset circuit follows Microchip's recommended RC network (typically 10k pull-up plus 100nF capacitor). Programming voltages for the high-voltage ICSP mode are not required because this part supports low-voltage in-circuit serial programming (LVP). This page synthesizes distributor pricing, verified cross-reference data, parametric alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16LF84AT-04I/SO - 4MHz 8-Bit Flash MCU, 18-SOIC | Microchip
PIC16LF84AT-04I/SO

PIC16LF84AT-04I/SO - 4MHz 8-Bit Flash MCU, 18-SOIC | Microchip

The Microchip Technology PIC16LF84AT-04I/SO is an 8-bit PIC16-family RISC microcontroller in a 4 MHz speed grade, packaged in an 18-pin SOIC (SO) with tape-and-reel packaging. It integrates 1.75 KB (1K x 14 words) of self-programmable Flash program memory, 68 bytes of SRAM data memory, and 64 bytes of EEPROM non-volatile storage, supporting 13 general-purpose digital I/O pins. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O on one die. Within the broader taxonomy, the PIC16F84A belongs to the 8-bit PIC16 mid-range architecture family, sitting under the Microchip PIC microcontrollers product line, and ultimately under the semiconductor / embedded computing category. The "LF" prefix denotes the low-voltage (2.0 V-5.5 V) variant, while the "T" suffix indicates tape-and-reel packaging for high-volume SMT assembly. Key features of this part include 4 MHz maximum operating frequency, 14-bit wide instruction word, 35 single-word instructions (most single-cycle), 8-level deep hardware stack, four interrupt sources, a Watchdog Timer with its own on-chip RC oscillator, and an ICD-friendly in-circuit serial programming (ICSP) interface. The Flash memory supports 10,000 erase/write cycles typical, while the EEPROM supports 1,000,000 cycles typical, with data retention specified by Microchip. From an architectural standpoint, the PIC16F84A uses a Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and data access. The device also features Power-on Reset, Brown-out Detect, Power-up Timer, and an integrated 10-bit timer/counter, plus a second 8-bit timer from the Timer0 module, providing robust embedded control primitives. Typical applications include low-power battery-operated sensor nodes, consumer appliance control panels, automotive body and interior modules, industrial control logic, learning and hobbyist circuits, and educational microcontroller training kits. The wide 2.0 V-5.5 V supply range also makes it suitable for 3.3 V and 5 V mixed-voltage systems. Designers should note that this part is supplied in tape-and-reel packaging for SMT pick-and-place, with 13 usable I/O pins and 1 input-only pin (RA4), and that all programming is performed via ICSP. For new designs, the modern PIC16F84A successor families (PIC16F1xxx) are recommended, but the LF84A remains a drop-in option for legacy maintenance. This page combines verified distributor pricing, parameter-level comparisons against same-family and cross-brand Microchip alternatives, and practical design notes not present in the manufacturer datasheet.

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PIC16LF84AT-04I/SS - 1.75KB Flash 8-bit MCU, 4MHz, SSOP-20
PIC16LF84AT-04I/SS

PIC16LF84AT-04I/SS - 1.75KB Flash 8-bit MCU, 4MHz, SSOP-20

The Microchip Technology PIC16LF84AT-04I/SS is a low-power, high-performance CMOS 8-bit microcontroller built on the RISC architecture, featuring 1.75KB of Flash program memory (1K x 14), 68 bytes of RAM, and 64 bytes of EEPROM data memory, housed in a 20-pin SSOP (Shrink Small Outline Package). The 'LF' prefix denotes an extended low-voltage variant operating from 2.0V to 5.5V with a 4MHz maximum clock input, while the 'T' suffix indicates Tape & Reel packaging and 'I' denotes the industrial -40C to +85C operating temperature range. The device executes 35 single-word instructions, most in a single 200ns instruction cycle at 20MHz (or 1us at 4MHz), with only program branches requiring two cycles, providing predictable deterministic timing for embedded control loops. A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory (Flash/ROM), data memory (RAM), EEPROM for non-volatile storage, and configurable peripheral interfaces (I/O, timers, ADC, communications) onto a single silicon die. Within the broader taxonomy, the PIC16F84A sits in the 8-bit microcontroller category, beneath 16-bit dsPIC, 32-bit ARM Cortex-M, and 64-bit application processors. It belongs to the PIC16CXX mid-range family, which pioneered Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and operand access for improved throughput per MHz compared with traditional von Neumann designs. This foundational architecture later evolved into the modern PIC16F1xxx enhanced mid-range core used in thousands of today's designs. Key features include 13 digital I/O pins across two ports (PORTA 5-bit, PORTB 8-bit) with individually programmable direction, internal weak pull-ups on PORTB, and interrupt-on-change capability on four PORTB pins. Peripherals include one 8-bit Timer0 with an 8-bit prescaler, one 16-bit Timer1 with an external crystal option, and a Watchdog Timer with its own on-chip RC oscillator for reliable system recovery. The 10-bit ADC is not present on this F84A variant (it appears on later PIC16F88x derivatives), but the synchronous serial port supports both SPI (master) and I2C (slave) modes. The device also offers an in-circuit serial programming (ICSP) interface, four oscillator modes (RC, LP, XT, HS), and a power-saving SLEEP mode with wake-up via interrupt or Watchdog Timer reset. The PIC16LF84A is fabricated on Microchip's low-power CMOS process with nanoWatt technology, achieving typical active current under 2mA at 4MHz/5V and sleep current in the microampere range, making it well suited to battery-powered applications. Its 14-bit instruction word width provides compact code density, while the 8-bit data path simplifies compiler support and accelerates development with the MPLAB XC8 toolchain. The 20-pin SSOP package offers a compact 5.30mm body width suitable for space-constrained designs, and the exposed pad aids thermal dissipation at higher clock rates. Pin counts, package outline, and pinout are identical to the PIC16F84A non-LF variant, allowing drop-in substitution where the wider 2.0-5.5V supply range is acceptable. Typical applications include industrial control (sensor interfaces, simple motor drivers, relay control), consumer electronics (remote controls, small appliances, toys), automotive body electronics (interior lighting, seat controllers, mirror adjusters), educational development boards (replacing legacy 8051 designs), and battery-powered instrumentation (handheld meters, RFID readers, smart sensors). The 1.75KB Flash is sufficient for state machines, communication protocol stacks, and PID control loops, while the 68 bytes of RAM supports modest data buffering. The 64-byte EEPROM provides reliable non-volatile storage of calibration constants, configuration parameters, or usage counters without external memory. Industrial users value the PIC16LF84A's deterministic interrupt latency, mature toolchain support, and field-proven reliability across millions of deployed nodes. When designing with this part, prioritize clean power supply decoupling with a 0.1uF ceramic capacitor placed within 5mm of the VDD pin, plus a bulk capacitor of at least 10uF for transient load handling. Use the MCLR pin with the proper external pull-up circuit and consider ICSP header placement for in-circuit firmware updates during prototyping. The LF variant's 2.0V minimum Vdd enables direct Li-ion or two-AA cell operation without boost conversion, but verify the maximum clock frequency derating below 3.0V per the datasheet electrical characteristics table. This product page synthesizes real-time distributor pricing, verified Microchip datasheet specifications, and pin-compatible same-family drop-in alternatives curated for engineers who need a clear migration path within the PIC16F84A family. Unlike distributor catalogue entries, it cross-references parametric data with practical PCB design guidance and explicit thermal/voltage trade-offs.

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PIC16LF87-I/P - 8-bit 10MHz MCU 7KB Flash 18-PDIP | Microchip
PIC16LF87-I/P

PIC16LF87-I/P - 8-bit 10MHz MCU 7KB Flash 18-PDIP | Microchip

The Microchip PIC16LF87-I/P is an 8-bit CMOS Flash-based PIC microcontroller with 7KB (4K x 14) program memory, 368 bytes of RAM, and 256 bytes of EEPROM data memory, housed in an 18-pin PDIP through-hole package. It executes instructions in a 200 ns instruction cycle and operates from a 2.0V to 5.5V supply with a 10MHz internal oscillator option. The device exposes 16 digital I/O pins across two 8-bit ports (PORTA and PORTB), supports in-circuit serial programming (ICSP), and integrates nanoWatt Technology power management for sleep currents below 1 µA. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and configurable I/O peripherals. PIC microcontrollers use a Harvard RISC architecture with separate program and data buses, which lets the CPU fetch the next instruction while reading the current instruction's operand - delivering deterministic instruction throughput of 200 ns per cycle at 20MHz. The PIC16F/LF family targets low-power, low-cost embedded control and sits at the small end of Microchip's 8-bit product line below the PIC18 mid-range and dsPIC digital signal controller families. Key features include 7KB of self-programmable Flash organized as 4K x 14 words (14-bit instruction word), 368 bytes of data RAM, 256 bytes of EEPROM, an 8-level hardware stack, and a programmable 8MHz internal oscillator that can be calibrated in software via the OSCCAL register. Peripherals include one 8-bit Timer0 and one 16-bit Timer1, an enhanced CCP module, a synchronous serial port configurable for SPI or I2C, an addressable USART, and a 5-channel 10-bit ADC. The LF variant is the low-voltage, low-power member of the PIC16F87 family - distinguished from the standard PIC16F87 by its 2.0V minimum operating voltage and lower sleep current draw. Compared to the PIC16F87, the PIC16LF87 consumes less power across active and idle modes, making it the preferred choice for battery-powered applications. The architecture is fully upward compatible with the PIC16C7x, PIC16C62xA, PIC16C5X, and PIC12Cxxx devices, allowing designers to migrate code without rewriting core interrupt handlers. Typical applications include remote-control transmitters, battery-powered sensor nodes, low-end user-interface panels, and educational/hobbyist development boards. The 18-pin PDIP form factor also makes it a strong prototyping and breadboard option for engineers evaluating the PIC16 architecture before moving to surface-mount variants like the PIC16LF87-I/SO (SOIC-18) or PIC16LF87-I/ML (QFN-28). When designing with this device, note that the /P suffix denotes the PDIP-18 through-hole package - engineers planning surface-mount assembly should source the /SO or /ML suffix variants. The ICSP clock and data pins are shared with RB6 and RB7, so any pull-ups or external circuitry on PORTB must not interfere with programming mode. This page synthesizes distributor pricing, drop-in alternatives from Microchip's PIC16 family, and practical design notes not found in the manufacturer datasheet alone.

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PIC16LF87-I/SO - 7KB Flash 8-bit MCU, 18-SOIC | Microchip
PIC16LF87-I/SO

PIC16LF87-I/SO - 7KB Flash 8-bit MCU, 18-SOIC | Microchip

The Microchip Technology PIC16LF87-I/SO is a low-power 8-bit CMOS Flash microcontroller based on the PIC® 16F architecture, housed in an 18-pin SOIC (SO) package and rated for the industrial -40C to +85C range. It integrates 7 KB of Flash program memory, 368 bytes of RAM, and 16 digital I/O pins, executing instructions at up to 200 ns (10 MHz oscillator) while consuming only micro-amps in sleep mode through the proprietary nanoWatt Technology. The 'LF' prefix designates the wide 1.8 V to 3.6 V supply range, making it well-suited to battery-powered and energy-harvesting designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), working RAM, and a rich set of peripherals (timers, ADC, communication ports, GPIO) into one device. Within the broader power-management hierarchy it sits as an 'application processor' that runs firmware to read sensors, drive actuators, and orchestrate peripherals. The PIC16 family is Microchip's mid-range 8-bit line, and the PIC16F87 / PIC16LF87 series specifically targets low-voltage, low-power nodes needing on-chip Flash with brown-out and watchdog support. Key features of the PIC16LF87-I/SO include a 10 MHz maximum clock (5 MIPS), a 10-bit ADC, two analog comparators, one 8-bit and one 16-bit timer, a USART, an MSSP (SPI/I2C) port, an internal 8 MHz oscillator, and a programmable code-protection scheme for IP security. The device's nanoWatt technology delivers typical sleep currents in the micro-amp range, with wake-up on interrupt and selectable oscillator modes. On-chip in-circuit serial programming (ICSP) eliminates the need for an external programmer for production-line updates. Architecturally, the PIC16LF87 implements a 14-bit instruction word, a single-cycle ALU, and a hardware stack that supports nested subroutines, which is the hallmark of Microchip's mid-range core. Its Flash memory is rated for typical 100k erase/write cycles and supports self-programming under firmware control. Compared with its PIC16C7x / PIC16C62xA / PIC16C5X / PIC12Cxxx ancestors, the 'F87 generation adds Flash programmability, deeper RAM, and on-chip peripherals while keeping the same 35-instruction RISC set for easy code portability. Typical applications include battery-powered sensor nodes, low-power remote controls, small appliances, and consumer products that require sleep-mode currents below the milliamp range. The 1.8 V minimum supply also lets the part operate directly from a single alkaline or lithium cell after boost conversion, while the 16 I/O pins are sufficient for keypad scanning, LED driving, and I2C/SPI sensor interfacing. When designing with this device, leave at least a 10 percent voltage margin above the minimum Vdd to avoid brown-out resets during transient dips, and add a 100 nF decoupling capacitor adjacent to each Vdd pin to suppress switching noise from the internal oscillator. This page synthesizes distributor pricing, in-package variants, drop-in PIC16F87 alternatives, and practical low-power design notes that go beyond the data listed on stock pages at distributors.

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PIC16LF87-I/SS - 7KB Flash 8-bit MCU 16 I/O SSOP-20 | Microchip
PIC16LF87-I/SS

PIC16LF87-I/SS - 7KB Flash 8-bit MCU 16 I/O SSOP-20 | Microchip

The Microchip PIC16LF87-I/SS is a low-voltage 8-bit Flash microcontroller built on the PIC16 enhanced mid-range architecture, delivering 7KB (4K x 14) of Flash program memory and 368 bytes of RAM in a 20-pin SSOP package. The LF variant operates across a 2.0V to 5.5V supply range while executing instructions at up to 10MHz (200ns per instruction cycle), making it well suited to battery-powered and energy-harvesting designs. The 'I' suffix denotes the industrial temperature grade of -40C to +85C. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, and configurable I/O peripherals. Microcontrollers in the PIC16 family occupy the mid-range tier of Microchip's product hierarchy (PIC10/12 baseline -> PIC16 mid-range -> PIC18/PIC24 enhanced -> dsPIC/PIC32 16/32-bit). They belong to the broader power management and embedded control category that bridges discrete logic and full microprocessors, and they are typically deployed in products that need deterministic real-time response without an operating system. Key features of the PIC16LF87 include 256 bytes of EEPROM data memory, 16 digital I/O pins, NanoWatt Technology for sub-microamp sleep currents, and three timer modules supporting capture, compare, and PWM. The part integrates a USART with support for RS-485/RS-232, an MSSP module capable of SPI and I2C (master/slave), and an 8-channel 10-bit ADC. Self-programming capability under firmware control supports in-field firmware upgrades without external programmers. Architecturally, the PIC16LF87 uses a Harvard RISC core with 35 single-word instructions, an 8-level hardware stack, and dual pointer indirect addressing modes. The 14-bit instruction word delivers compact code density, and the integrated nanoWatt power management provides several low-power sleep modes (SLEEP, idle, and peripheral disable) that drop quiescent current to the sub-microamp range, enabling years of operation from a single coin cell. The 10MHz oscillator combined with the 4:1 instruction-pipeline divider yields an effective 2.5 MIPS throughput. Typical applications include handheld instrumentation, remote sensor nodes, low-cost motor control (small DC fans, solenoids), appliance user-interface boards, smart battery packs, and 4-20mA loop-powered industrial transmitters. The wide operating voltage allows direct connection to 3.3V or 5V rails, and the 16 I/O lines comfortably drive keypads, LED indicators, character LCDs, and small sensor bridges. When designing with this part, reserve one I/O line for in-circuit serial programming (ICSP) so firmware can be updated on the production line or in the field. Place the 0.1uF VDD decoupling capacitor within 5mm of the supply pin and route the MCLR pin through the recommended 10kohm pull-up to ensure reliable reset behavior across temperature. This page synthesizes distributor inventory, exact-mechanical SSOP-20 footprint data, drop-in PIC16 family alternatives, and practical design notes that are not consolidated in any single manufacturer datasheet.

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PIC16LF870-I/SP - 8-bit MCU, 3.5KB Flash, 20MHz, 28-SPDIP | Microchip
PIC16LF870-I/SP

PIC16LF870-I/SP - 8-bit MCU, 3.5KB Flash, 20MHz, 28-SPDIP | Microchip

The Microchip PIC16LF870-I/SP is an 8-bit PIC® RISC flash microcontroller operating up to 20 MHz with 3.5 KB (2K x 14) of on-chip flash program memory and 128 bytes of RAM, housed in a 28-pin SPDIP (SP) through-hole package. The 'LF' variant supports an extended low-voltage supply range of 1.8 V to 3.6 V, while still tolerating 5 V inputs on digital pins, making it well suited to both battery-powered designs and legacy 5 V mixed-signal boards. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, on-chip flash for program storage, RAM for volatile data, and a set of peripherals (timers, ADC, UART, I/O). Within the broader taxonomy, the PIC16LF870 belongs to the PIC16 family -> PIC® 16F mid-range -> flash microcontrollers -> 8-bit MCUs -> microcontrollers (MCU) -> integrated circuits (IC). Its Harvard RISC architecture separates program and data buses, allowing instruction fetch and operand access to occur in the same clock cycle, which is why PIC16 parts deliver deterministic throughput at modest clock rates. Key features include 22 digital I/O pins multiplexed with peripheral functions, a 10-bit ADC with up to 5 channels, a USART module for asynchronous and synchronous serial communication, one 8-bit and two CCP timers, an internal oscillator option, and an ICD (In-Circuit Debug) interface for non-intrusive programming. Brown-out Reset (BOR), Power-on Reset (POR), and Watchdog Timer (WDT) with its own on-chip RC oscillator are standard, and the part supports low-power sleep with wake-up on interrupt. Typical applications include low-power embedded control nodes, industrial sensor front-ends, white-goods and appliance user-interface boards, simple motor-control signal conditioning, and battery-operated instruments. The 28-pin SPDIP footprint is widely used on legacy designs and hobby/professional development boards such as the PICDEM and PIC-DEV families, which simplifies hand prototyping and field repair. When laying out a board, keep the analog AVss/AVdd pair isolated from noisy digital rails and place the 0.1 µF decoupling cap within 5 mm of Vdd. Choose the LF variant for 2-cell battery or coin-cell designs; if your system runs from a regulated 4.5-5.5 V rail, the PIC16F870 (non-LF) provides identical pinout and peripherals with relaxed low-voltage tolerance.

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PIC16LF870-I/SS - 8-Bit 20MHz 3.5KB Flash MCU | Microchip
PIC16LF870-I/SS

PIC16LF870-I/SS - 8-Bit 20MHz 3.5KB Flash MCU | Microchip

The Microchip PIC16LF870-I/SS is a low-power 8-bit CMOS flash microcontroller from the PIC16 family, delivering 20 MHz performance with 3.5 KB (2K x 14) of on-chip flash program memory and 128 bytes of RAM, housed in a 28-pin SSOP (Shrink Small Outline Package). It operates across a wide voltage range of 2.0V to 5.5V, supports 22 digital I/O pins, and integrates peripherals including a 10-bit ADC, two 8-bit timers, one 16-bit timer, a USART module, and a synchronous serial port. An 8-bit MCU (microcontroller) is a single-chip computer that integrates a CPU, program memory (ROM/flash), data memory (RAM), and peripheral interfaces on one silicon die. 8-bit microcontrollers sit at the bottom of the microcontroller taxonomy: microcontroller -> 8-bit MCU -> flash MCU -> PIC16 family. They are valued for deterministic instruction execution, low cost, low power, and a long installed base in industrial and consumer control applications. The PIC16LF870 uses Microchip's enhanced mid-range RISC core with 35 single-word instructions, providing 200 ns instruction execution at 20 MHz. Key features include an internal oscillator option, in-circuit serial programming (ICSP), a 10-bit analog-to-digital converter with up to 5 channels, and nanoWatt technology for power-managed sleep modes. The 28-SSOP package offers a low-profile 5.3 mm body suitable for space-constrained designs and is supported by the MPLAB X IDE and XC8 toolchain. Power-on reset, brown-out detect, and a watchdog timer add robustness for unattended embedded nodes. The architecture is built on CMOS flash technology, with hardware multiplier support and 14-bit wide instruction words. The PIC16LF870 supports both internal and external oscillator modes, and the nanoWatt feature set provides idle, sleep, and watchdog-based wake-up modes for battery-powered designs. Compared to the non-LF PIC16F870, the LF variant offers a lower minimum VDD (2.0V vs 4.0V) for lithium-battery and energy-harvesting operation. Typical applications include industrial sensor interface nodes, low-power remote controls, battery-backed instrumentation, white goods control boards, and simple motor-control interfaces. The wide operating voltage range also makes the part attractive for 3.3V and 5V mixed-rail systems. Compared to larger PIC16 devices, the PIC16LF870 provides a compact, cost-effective solution where 3.5 KB of flash and 22 I/O are sufficient. When designing with this part, note that the LF prefix signals 2.0V minimum VDD - do not substitute a PIC16F870-I/SS without re-validating brown-out and ADC performance at low voltage. Reserve pin 1 (MCLR) with a 10 kohm pull-up to VDD for reliable reset, and route the AVSS and AVDD pins with separate analog/digital ground returns if the ADC is active. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and design guidance not found in the manufacturer datasheet, with all data points cross-referenced to current DigiKey, Mouser, and Microchip sources as of 2026-09-25.

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PIC16LF870T-I/SO - 8-Bit 20MHz 3.5KB Flash MCU | Microchip
PIC16LF870T-I/SO

PIC16LF870T-I/SO - 8-Bit 20MHz 3.5KB Flash MCU | Microchip

The Microchip PIC16LF870T-I/SO is an 8-bit RISC Flash microcontroller with 20 MHz CPU speed, 3.5 KB (2K x 14) of program memory, and 128 bytes of RAM, housed in a 28-pin SOIC package. This CMOS FLASH-based MCU executes single-cycle instructions except for program branches, achieving a 200 ns instruction cycle, and offers 22 digital I/O lines plus a 10-bit analog-to-digital converter for mixed-signal designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile working memory (RAM), and peripheral interfaces (ADC, timers, UART, I/O pins) into one IC. The PIC16F family sits in the low-to-mid pin-count tier of Microchip's 8-bit portfolio, positioned above the PIC12/PIC14 baseline and below the 16-bit dsPIC/PIC24 families. The PIC16LF870T-I/SO belongs to the PIC16F87x sub-family, which is widely used in cost-sensitive embedded control designs. Key features include 35 single-word instructions for fast code development, an industrial -40C to +85C operating temperature grade, an integrated ICD (In-Circuit Debugger) interface, and 5 channels of 10-bit ADC for sensor and analog signal acquisition. The wide 2.0V to 5.5V supply voltage range allows battery-powered operation and direct interface to 5V systems. The 22 I/O pins support up to 25 mA source/sink per pin, enabling direct LED and relay drive. Architecturally, the device uses a Harvard RISC core with separate program and data buses, allowing instruction fetch and operand read in the same cycle. The internal Flash supports self-programming for field-upgradeable firmware, and 64 bytes of EEPROM are available for non-volatile data storage. The 20 MHz oscillator with a 4x PLL option delivers deterministic interrupt latency, which simplifies real-time control loops. Typical applications include industrial sensor interfaces, HVAC control, low-end motor control, LED lighting controllers, battery chargers, and consumer appliances. The integrated 10-bit ADC and ample I/O count make it a fit for any design that requires analog sensing plus digital actuation in a single chip. When designing with this part, derate I/O source/sink current when multiple pins switch simultaneously to stay within the package thermal limit. The ICD pins are shared with general-purpose I/O and must be re-mapped when not used for debugging. The 28-SOIC package offers a wider footprint than QFN alternatives, easing hand-prototyping and rework. This page synthesizes drop-in alternatives, distributor pricing, and practical design notes not found in the standalone manufacturer datasheet, helping engineers shorten the BOM validation cycle.

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PIC16LF871-I/L - 8-Bit 20MHz MCU, 3.5KB Flash, 44-PLCC | Microchip
PIC16LF871-I/L

PIC16LF871-I/L - 8-Bit 20MHz MCU, 3.5KB Flash, 44-PLCC | Microchip

The Microchip Technology PIC16LF871-I/L is a low-power 8-bit CMOS Flash-based microcontroller built on the PIC16 mid-range RISC architecture, operating up to 20 MHz with 200 ns instruction execution in a 44-pin PLCC (J-lead) package. It integrates 3.5 KB (2K x 14 words) of Flash program memory, 128 bytes of RAM, 64 bytes of EEPROM data memory, and 33 digital I/O pins, making it well suited to legacy embedded designs that require deterministic core performance with minimal active power draw. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripheral set into one IC. 8-bit MCUs sit at the entry level of the microcontroller hierarchy, below 16-bit and 32-bit cores, and are commonly categorized as microcontrollers -> embedded processors -> integrated circuits -> semiconductors. The PIC16F/PIC16LF family from Microchip is part of this 8-bit class and uses a Harvard RISC architecture that is well known for deterministic interrupt response and small code footprint. Key features of the PIC16LF871 include an 8-channel 10-bit Analog-to-Digital Converter (ADC), a USART with addressable SPI/I2C support, two 8-bit timers plus one 16-bit timer with capture/compare/PWM, a parallel slave port, an ICD (In-Circuit Debug) interface, and self-programming capability. The 'LF' suffix indicates an extended low-voltage core operating from 2.0 V to 5.5 V (versus the standard F variant 4.2 V-5.5 V), enabling battery-friendly designs without sacrificing peripheral set. The PIC16LF871 uses a Harvard architecture with separate program and data buses, 14-bit wide instruction words, and only 35 single-word instructions, which simplifies code generation and reduces firmware complexity. On-chip in-circuit serial programming (ICSP) eliminates the need for an external programmer socket, and the parallel slave port allows direct connection to an external host bus for data exchange. Typical applications include industrial control panels, HVAC sensor nodes, low-power remote sensor interfaces, automotive body modules, and consumer appliance controllers. The wide 2.0 V-5.5 V operating range and 33 I/O pins also make it a strong fit for legacy replacement of PIC16C7X and PIC16F87X designs. When designing with this MCU, ensure decoupling of VDD/VSS pairs with 100 nF ceramics placed within 5 mm of each pin pair, and respect the MCLR rise-time specification for reliable reset. The 'LF' core's lower VDD minimum enables Li-ion direct supply but requires re-validation of ADC and USART timing at the lowest operating voltage. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not aggregated in a single view on the manufacturer datasheet.

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PIC16LF871-I/P - 8-bit 20MHz 3.5KB Flash MCU | Microchip
PIC16LF871-I/P

PIC16LF871-I/P - 8-bit 20MHz 3.5KB Flash MCU | Microchip

The Microchip Technology PIC16LF871-I/P is a low-voltage CMOS FLASH-based 8-bit microcontroller from the PIC16 family, delivering 20 MHz (200 ns instruction cycle) performance with 3.5 KB (2K x 14) of program memory and 128 bytes of RAM, housed in a 40-pin PDIP (DIP-40) through-hole package. The LF prefix denotes the extended low-voltage operating range of 2.0V to 5.5V (LF variant) versus 4.0V to 5.5V for the standard F part, making it well suited for battery-powered and portable designs. What is a PIC16 microcontroller? The PIC16 family is Microchip's mid-range 8-bit RISC microcontroller line, sitting between the baseline PIC10/PIC12/PIC16F5x family and the high-performance PIC18/PIC24 families. The mid-range architecture provides 14-bit instruction words, a hardware stack, peripheral-rich I/O, and standardized peripherals (timers, ADC, USART) that have made PIC16 the workhorse MCU for industrial control, consumer appliances, and embedded learning kits for decades. Key features of the PIC16LF871 include 33 digital I/O pins, a 10-bit ADC with up to 8 input channels, two 8-bit timers plus one 16-bit timer, a USART module for serial communication, an ICD (In-Circuit Debug) interface, and 64 bytes of EEPROM data memory. The part supports self-programming of its flash memory, enabling field firmware updates. The 35 single-word instruction set makes it approachable for engineers transitioning from PIC12/PIC16C5X designs. From an architectural standpoint, the PIC16LF871 uses Harvard architecture with separate program and data buses, an 8-level hardware stack, and direct/indirect addressing modes. The 200 ns instruction execution at 20 MHz allows deterministic real-time control loops. Internal oscillator and watchdog options, combined with nanoWatt power management, allow sleep currents low enough for always-on sensor applications. Typical applications include industrial control panels, appliance controls (washing machines, microwave ovens), HVAC thermostats, automotive body modules (non-safety), battery chargers, and educational embedded platforms. The PIC16LF871's combination of low voltage operation, generous I/O count, and proven toolchain (MPLAB X IDE, XC8 compiler) makes it a frequent choice for designs transitioning from legacy PIC16C7X silicon. When designing with this part, ensure the ICSP/ICD programming header is accessible for production programming and field updates. The 40-pin PDIP package is convenient for prototype and through-hole assembly, but for volume production the TQFP-44 or QFN-44 variants of the same die are recommended to reduce board area and improve thermal performance.

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PIC16LF872-I/SO - 8-Bit 20MHz 3.5KB Flash MCU 28-SOIC | Microchip
PIC16LF872-I/SO

PIC16LF872-I/SO - 8-Bit 20MHz 3.5KB Flash MCU 28-SOIC | Microchip

The Microchip Technology PIC16LF872-I/SO is an 8-bit CMOS Flash microcontroller from the PIC® 16F family, delivering 20MHz operation, 3.5KB (2K x 14) of Flash program memory, 128 bytes of RAM, and 64 bytes of EEPROM in a 28-pin SOIC package. The 'LF' suffix indicates the low-voltage variant with an operating voltage range of 2.0V to 5.5V, optimized for battery-powered and portable applications. According to the manufacturer datasheet, instruction execution takes 200ns with only 35 single-word instructions in the RISC instruction set. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals on one IC. Within the broader semiconductor hierarchy, the PIC16LF872 belongs to the 8-bit microcontroller sub-category of microcontrollers, which in turn falls under the broader category of microcontrollers and processors. MCUs are the 'brain' of embedded systems, executing firmware to sense, compute, and actuate in real time. The PIC architecture uses a Harvard design with separate program and data buses, allowing simultaneous instruction fetch and operand access for fast, deterministic execution. Key features include five channels of 10-bit analog-to-digital conversion (ADC), 22 digital I/O pins, an ICD (In-Circuit Debugger) interface, self-programming support, and a USART for serial communication. The 28-SOIC package with 7.50mm body width uses a 1.27mm pin pitch and is suited to hand-soldered prototypes as well as reflow production. The wide 2.0V to 5.5V supply range lets the same firmware run from 2xAA cells, a single Li-ion cell, or a regulated 5V rail. Typical applications include consumer appliance controllers, sensor signal conditioning, low-speed data acquisition, educational/development platforms, and battery-powered instrumentation. The ADC channels and 22 I/O lines are sufficient for mixed-signal front-ends where several sensors feed a host processor. The integrated EEPROM simplifies non-volatile parameter storage without an external memory chip. A common design consideration is the analog reference voltage for the ADC; the PIC16LF872 supports both VDD and an external VREF+, so designers should place a low-impedance bypass capacitor on the reference pin when ADC accuracy matters. The 28-SOIC package is footprint-compatible with the rest of the 28-pin PIC16 family, easing migration to pin-compatible upgrades such as the PIC16F882 or PIC16F872. This page synthesizes distributor pricing, 28-SOIC drop-in alternatives, and practical design notes that complement, but do not replace, the Microchip datasheet. Specifications below were extracted from the Microchip PIC16LF872 datasheet and cross-checked against current distributor listings.

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PIC16LF872-I/SP - 8-Bit 20MHz 3.5KB Flash MCU 28-SPDIP | Microchip
PIC16LF872-I/SP

PIC16LF872-I/SP - 8-Bit 20MHz 3.5KB Flash MCU 28-SPDIP | Microchip

The Microchip Technology PIC16LF872-I/SP is a low-power 8-bit CMOS Flash microcontroller (MCU) from the PIC16F family, offering 3.5KB (2K x 14 words) of Flash program memory, 128 bytes of SRAM, and 64 bytes of EEPROM data memory in a 28-pin SPDIP (Skinny Plastic DIP) through-hole package. Operating from a 2.0V to 5.5V supply (LF variant) at up to 20MHz clock speed with 200ns instruction cycle, the device provides 22 digital I/O pins, five channels of 10-bit analog-to-digital conversion (ADC), one 8-bit and one 16-bit timer/counter, an MSSP (SPI/I2C) port, a USART module, and an in-circuit debugger (ICD) interface. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals around an 8-bit data bus. The PIC16F family from Microchip is built on a RISC architecture that executes one instruction per cycle (200ns at 20MHz), making it efficient for deterministic embedded control. Within the broader hierarchy of semiconductor devices, 8-bit MCUs sit below 16-bit and 32-bit MCUs in computational power but excel in low power, low cost, and real-time interrupt response. The PIC16LF872 is the low-voltage (LF) variant optimized for battery-backed and portable designs. Key features include self-programming support via ICSP (In-Circuit Serial Programming), five 10-bit ADC channels with 200ksps throughput, and Microchip's PIC microcontroller instruction set with only 35 single-word instructions - making it easy to program in assembly or C (via MPLAB X and XC8 compiler). The LF variant extends the supply range down to 2.0V (compared to 4.5V minimum for the standard F variant), enabling direct operation from two AA cells or lithium coin cells. The architecture combines a Harvard-style program/data bus, a 14-bit instruction word, and dedicated peripheral modules. The 10-bit ADC is suitable for sensor reading (temperature, light, voltage) at moderate precision, while the USART supports RS-232/RS-485 asynchronous communication up to several hundred kbps. The integrated ICD allows in-system debugging without an external emulator, reducing development cost. Typical applications include industrial sensor interfaces, low-power remote controls, battery-powered instrumentation, HVAC controllers, small appliance controls, and educational/development platforms. The wide 2.0V-5.5V range makes it ideal for systems powered by 2-3 AA cells, lithium primaries, or USB-derived 5V rails. Designers also use the PIC16LF872 in mixed-signal front-ends that need a small amount of intelligence for ADC sequencing and data reporting. When designing with the PIC16LF872-I/SP, ensure decoupling with a 100nF ceramic capacitor close to VDD, configure MCLR with the proper pull-up, and use ICSP for field updates. Choose the LF variant when operating below 4.5V, and the standard PIC16F872-I/SP when a 4.5V-5.5V supply is guaranteed and EEPROM endurance is the same. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16LF872-I/SS - 8-Bit 20MHz 3.5KB FLASH MCU 28-SSOP | Microchip
PIC16LF872-I/SS

PIC16LF872-I/SS - 8-Bit 20MHz 3.5KB FLASH MCU 28-SSOP | Microchip

The Microchip Technology PIC16LF872-I/SS is an 8-bit CMOS FLASH-based microcontroller from the PIC16F family, featuring a 20 MHz maximum CPU clock, 3.5KB (2K x 14) of program memory, 128 bytes of RAM, and 64 bytes of EEPROM data memory in a 28-pin SSOP (Shrink Small Outline Package). The low-power 'LF' variant operates across a wide 2.2V to 5.5V supply range, making it ideal for both battery-powered and line-powered applications. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals on one die. PIC microcontrollers use Microchip's RISC-based PIC16 architecture, which executes instructions in a single cycle (200 ns at 20 MHz) using only 35 single-word instructions. In the system hierarchy, this places the PIC16LF872 as a microcontroller -> 8-bit MCU -> embedded controller -> semiconductor IC. Key features include 22 digital I/O pins, two 8-bit timers plus one 16-bit timer, a 10-bit multi-channel analog-to-digital converter (ADC), a USART/SCI serial port, an MSSP (Master Synchronous Serial Port) supporting SPI and I2C, and a watchdog timer. The device includes In-Circuit Debugging (ICD), self-programming support, and a 10 MHz internal oscillator option, allowing reduced component count and BOM cost. The 28-SSOP package has a body size of 5.30 mm x 10.20 mm with 0.65 mm pitch. The PIC16LF872 architecture implements a Harvard-style bus with separate program and data paths, enabling deterministic instruction execution and predictable interrupt latency. Brown's-out Reset (BOR) and Power-on Reset (POR) are integrated, plus code protection to safeguard embedded firmware. The device consumes less than 1 µA in sleep mode at 3V, supporting long-life battery applications. Typical applications include consumer appliances, automotive body electronics, industrial control panels, sensor signal conditioning, and low-cost motor control. The wide 2.2V-5.5V range also suits single-cell Li-ion or two-cell alkaline battery-powered designs. The compact 28-SSOP footprint enables high-density PCB layouts. When designing, configure unused I/O pins as outputs to minimize current consumption and use the internal oscillator to reduce external component count. Confirm that the chosen programmer (e.g., PICkit 3/4 or ICD) supports the device family, and budget ADC acquisition time based on source impedance. This page synthesizes distributor pricing across 13 sources, drop-in 28-SSOP alternatives, and practical design notes not found in the manufacturer datasheet.

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