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PIC16LF1937-I/PT - 8-bit XLP MCU, 14KB Flash, LCD, 44-TQFP
PIC16LF1937-I/PT

PIC16LF1937-I/PT - 8-bit XLP MCU, 14KB Flash, LCD, 44-TQFP

The Microchip Technology PIC16LF1937-I/PT is an 8-bit PIC16 family CMOS flash microcontroller built on Microchip's nanoWatt XLP (eXtreme Low Power) technology, offering up to 32MHz CPU speed, 14KB (8K x 14 words) of Flash program memory, 512 bytes of RAM and 256 bytes of EEPROM in a 44-pin TQFP (10x10mm, PT suffix) surface-mount package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, peripherals such as ADC, timers, communication interfaces, and I/O pins on one die. Within the broader semiconductor taxonomy, this PIC16LF1937 sits in the hierarchy of 8-bit microcontroller -> RISC microcontroller -> embedded controller -> integrated circuit. The "LF" prefix denotes the low-voltage (1.8-3.6V F-range) variant optimized for battery-powered designs, while the non-LF PIC16F1937 operates from 2.3-5.5V. Microchip's XLP technology enables sleep currents in the nanoamp range, making this MCU suited to always-on applications. Key features of the PIC16LF1937-I/PT include an integrated LCD driver capable of driving segment displays up to a defined common/segment configuration, an enhanced 14-channel 10-bit ADC, multiple Enhanced USART, SPI, and I2C interfaces, Capture/Compare/PWM modules, and 36 digital I/O pins. The Instruction Set Architecture (ISA) is the standard PIC mid-range 14-bit core, supported by Microchip's MPLAB X IDE, XC8 compiler, and a broad ecosystem of programmers/debuggers including PICkit and ICD. Architecturally, the device uses a Harvard bus (separate program and data paths) and a RISC-style 49-instruction set, which keeps interrupt latency deterministic and code execution efficient. The integrated LCD driver supports up to 96 segments, allowing direct connection of glass displays without external charge-pump components. On-chip CTMU (Charge Time Measurement Unit) enables touch and proximity sensing applications without external analog front-ends. Typical applications include low-power battery sensor nodes, medical glucose and portable diagnostic meters, consumer appliances with LCD user interfaces (microwave ovens, washing machines), industrial HMI panels, e-meter and instrumentation clusters, and remote controls. The wide peripheral set and segment-LCD integration reduce BOM cost by eliminating external drivers. When designing with the PIC16LF1937-I/PT, ensure the 1.8-3.6V supply rail stays within regulation at peak load transients. Decouple VDD with 100nF plus 10uF bulk capacitors placed within a few millimeters of the pins. Use the ICD3 or PICkit 4 for in-circuit debug; both the ICSP PGC/PGD and the dedicated ICSPCLK/ICSPDAT lines are multiplexed on PORTB. This page combines distributor pricing, drop-in same-package alternatives from Microchip's PIC16 family, design notes, and an AI-optimized FAQ not found in the manufacturer datasheet alone.

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PIC16LF1937T-I/MV - 8-Bit XLP MCU, 14KB Flash, 40-UQFN | Microchip
PIC16LF1937T-I/MV

PIC16LF1937T-I/MV - 8-Bit XLP MCU, 14KB Flash, 40-UQFN | Microchip

The Microchip Technology PIC16LF1937T-I/MV is an 8-bit PIC16F-family microcontroller built on the XLP (eXtreme Low Power) platform, delivering 32MHz performance with 14KB Flash, 512B RAM, and 256B EEPROM, packaged in a compact 40-pin UQFN (MV) 5x5mm form factor. The 'LF' prefix denotes the low-voltage variant operating from 1.8V to 3.6V, while 'T' indicates tape-and-reel packaging, and 'I' specifies the industrial -40C to +85C temperature range. An 8-bit microcontroller (MCU) is a self-contained computing core that integrates a CPU, program memory (Flash), data memory (RAM), non-volatile storage (EEPROM), and a rich set of peripherals onto a single die. PIC microcontrollers use a modified Harvard RISC architecture with a single accumulator (WREG) and a small, deterministic instruction set optimized for embedded control. PIC MCUs sit at the bottom of the embedded hierarchy: microcontroller -> embedded processor -> semiconductor IC, and are widely deployed wherever deterministic low-power control is required. Key features of the PIC16LF1937 include the XLP nanoWatt technology with sleep currents below 100 nA, an integrated LCD driver supporting up to 96 segments, a 10-bit ADC with up to 14 channels, mTouch capacitive touch sensing, multiple Enhanced Universal Synchronous/Asynchronous Receiver Transmitters (EUSART), SPI, and I2C peripherals, plus a 16-bit Timer1 and capture/compare modules. The 32MHz internal oscillator and 16-level hardware stack support event-driven and RTOS-style designs. The architecture uses a 14-bit instruction word with a 2-stage pipeline, providing single-cycle execution for most instructions. Internal peripherals include the Master Synchronous Serial Port (MSSP) for SPI/I2C, up to 36 digital I/O pins, and the Peripheral Pin Select (PPS) that allows flexible peripheral-to-pin mapping - dramatically simplifying PCB routing on dense designs. Typical applications include battery-powered consumer electronics, portable medical sensors, IoT edge nodes, automotive body controllers, industrial sensor interfaces, and human-machine interface (HMI) modules with integrated LCD. The XLP technology is especially valuable in energy-harvesting designs where quiescent current dominates battery life. When designing with this MCU, allocate decoupling capacitance (100nF ceramic + bulk) close to VDD pins and follow Microchip's debug header recommendations for ICSP. The PPS system requires that peripherals be unlocked via the PPS lock sequence before reconfiguration; firmware must include the proper unlock sequence in any field-update flow. This page synthesizes distributor pricing, package options, and practical design notes not found on the manufacturer datasheet, and consolidates drop-in alternatives across the PIC16LF193x family for engineers evaluating footprint-compatible MCU migrations.

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PIC16LF1937T-I/PT - 14KB Flash 8-bit MCU 44-TQFP | Microchip
PIC16LF1937T-I/PT

PIC16LF1937T-I/PT - 14KB Flash 8-bit MCU 44-TQFP | Microchip

The Microchip PIC16LF1937T-I/PT is an 8-bit CMOS flash microcontroller built on the enhanced mid-range PIC16 core with nanoWatt XLP (eXtreme Low Power) technology, packaged in a 44-pin TQFP (10x10 mm). The device delivers 32 MHz operation, 14 KB (8K x 14) of self-programmable flash program memory, 512 bytes of SRAM, and 256 bytes of EEPROM data memory, with a broad 1.8 V to 5.5 V operating voltage range that supports both battery and 5 V regulated rails. What is a PIC16 microcontroller? PIC16 is Microchip's family of 8-bit RISC microcontrollers using a Harvard architecture with separate program and data buses; nanoWatt XLP technology extends sleep current down to the tens of nanoamps, making the family a standard choice for battery-powered and always-on embedded designs. Within the broader taxonomy, the PIC16LF1937 sits at: 8-bit MCU -> PIC16 family -> PIC16F193x sub-family -> PIC16LF1937 (low-voltage 'LF' variant) -> Microchip 8-bit microcontrollers -> Microcontroller IC -> Embedded semiconductor. Key features include an integrated LCD driver supporting up to 96 segments, a 16-channel 10-bit ADC, multiple Enhanced USART, MSSP (SPI/I2C) and CCP/ECCP peripherals, 36 digital I/O pins, and four 8-bit timers plus two CCP modules. The device also provides two comparators and a capacitive touch Charge Time Measurement Unit (CTMU) for sensor interfaces, with active-low MCLR and flexible oscillator options including 32 kHz internal LF oscillator. Architecture-wise, the LF1937 executes most instructions in one instruction cycle and supports interrupt prioritization with hardware context save. The 14-bit instruction word enables a compact code footprint while the dual-bank flash allows in-application self-reprogramming for bootloader-style field updates. Typical applications include battery-powered consumer appliances with LCD user interfaces, low-energy sensor hubs, white-goods control panels, portable medical monitors, and industrial HMI modules where the on-chip LCD driver eliminates a separate display controller. The wide voltage range and XLP sleep modes also suit remote controls, utility metering peripherals, and always-on IoT edge nodes. When designing with this part, plan the PCB layout so that the TQFP-44 thermal pad is properly soldered to a copper pour, and respect the recommended decoupling capacitor placement near VDD/AVDD pins to keep ADC noise low. Programming is supported by Microchip's MPLAB X IDE and the XC8 compiler, with debug via ICD 3 or PICkit 4. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16LF1938-E/SO - 28KB Flash 8-Bit MCU, 1.8-5.5V | Microchip
PIC16LF1938-E/SO

PIC16LF1938-E/SO - 28KB Flash 8-Bit MCU, 1.8-5.5V | Microchip

The Microchip Technology PIC16LF1938-E/SO is an 8-bit PIC16F Microcontroller IC featuring 28KB Flash program memory, 1KB SRAM, and 256 bytes of EEPROM, operating from 1.8V to 5.5V in a 28-pin SOIC package. It executes instructions at 32 MHz with 200 ns instruction cycle, belongs to the nanoWatt XLP extreme-low-power family, and integrates an LCD driver supporting up to 192 segments. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for embedded control. The PIC16 family uses a RISC Harvard architecture, which keeps program and data memory on separate buses, allowing simultaneous fetch-and-execute to sustain one instruction per clock cycle. As a member of the broader microcontrollers > microcontroller IC > embedded processor > semiconductor taxonomy, the PIC16 sits below 16/32-bit MCUs in capability but above 4-bit controllers in throughput, balancing cost, simplicity, and on-chip peripherals. Key features include eXtreme Low Power (XLP) sleep currents down to 20 nA, 11 ADC channels with 10-bit resolution, 2 comparators, 4 timers, 2 CCP modules, an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), Master I2C, SPI, and an integrated mTouch capacitive-sensing peripheral. Twenty-five GPIO pins break out device peripherals to the PCB, while the integrated LCD driver eliminates external display hardware. The architecture combines a precision 16-level hardware stack, a deterministic 35-instruction set, and peripherals clocked from the system oscillator through a jitter-free peripheral clock divider. Five oscillator options (HFINTOSC, LFINTOSC, EC, XT, HS) plus 4x PLL give the designer wide frequency vs. power trade-offs. Typical applications include battery-powered metering (water/gas/heat), thermostat and HVAC controls with LCD readouts, capacitive-touch user interfaces, medical glucose meters, consumer remote controls, and industrial sensor/transmitter nodes where nanoWatt XLP sleep currents materially extend battery life. When designing with this MCU, budget for the LC divider bypass caps near AVDD/AVSS and route the LCD COM/SEG traces with adequate spacing - the integrated charge-pump can pull a few hundred microamps when driving large glass panels. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the standalone manufacturer datasheet, giving procurement and design engineers a single reference for the PIC16LF1938-E/SO.

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PIC16LF1938-E/SP - 28KB Flash, LCD, nanoWatt XLP MCU | Microchip
PIC16LF1938-E/SP

PIC16LF1938-E/SP - 28KB Flash, LCD, nanoWatt XLP MCU | Microchip

The Microchip Technology PIC16LF1938-E/SP is an 8-bit flash-based CMOS microcontroller featuring 28KB of program memory, 1024 bytes of RAM, and 256 bytes of EEPROM, housed in a 28-pin SPDIP (Skinny Plastic DIP) through-hole package. It operates from 1.8V to 3.6V, integrates a 32 MHz internal oscillator, and belongs to the PIC16F193x family with nanoWatt XLP (eXtreme Low Power) technology. An 8-bit PIC microcontroller is a RISC-based embedded processor that executes one instruction per clock cycle (except branches), giving predictable timing and deterministic interrupt response. PIC MCUs sit in the broader taxonomy as 8-bit microcontrollers -> microcontrollers -> embedded processors -> semiconductors, and the PIC16 sub-family targets ultra-low-power and mixed-signal applications with on-chip peripherals such as ADCs, comparators, and LCD drivers. Key features include an integrated LCD driver supporting up to 96 segments, a 10-bit ADC with up to 17 channels, multiple communication peripherals (EUSART, MSSP for SPI/I2C), 2 capture/compare/PWM modules, and nanoWatt XLP modes achieving sub-uA sleep currents. The device also supports 25 mA source/sink per I/O, making it suitable for direct LED drive. Technically, the PIC16LF1938 uses a Harvard architecture with separate program and data buses, a 14-bit instruction word, and a 32 kHz to 32 MHz internal oscillator with PLL. The 'LF' prefix denotes the low-voltage (1.8V-3.6V) variant optimized for battery-powered designs, while the 'E' suffix indicates the extended (-40C to +125C) operating temperature grade. Typical applications include battery-powered LCD instrumentation (utility meters, thermostats, weighing scales), remote controls, sensor nodes, consumer appliances with segment displays, and industrial control panels. The on-chip LCD driver eliminates the need for an external LCD controller, reducing BOM cost and PCB area. When designing with this part, note that the 28-pin SPDIP package is through-hole, making it ideal for prototyping and hand-soldered prototypes but not high-volume SMT production - consider PIC16LF1938-E/SS (SSOP-28) or PIC16LF1938-E/ML (QFN-28) variants for reflow-soldered boards. This page synthesizes distributor pricing, parameter comparisons against same-family and competitor MCUs, and practical design notes - information not aggregated on any single manufacturer or distributor page.

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PIC16LF1938-E/SS - 28KB Flash 8-Bit MCU, LCD, XLP | Microchip
PIC16LF1938-E/SS

PIC16LF1938-E/SS - 28KB Flash 8-Bit MCU, LCD, XLP | Microchip

The Microchip Technology PIC16LF1938-E/SS is an 8-bit CMOS flash-based microcontroller (MCU) belonging to the PIC16LF193x family, featuring 28KB of program Flash memory, 1024 bytes of RAM, and 256 bytes of EEPROM in a 28-pin SSOP package. It operates at up to 32 MHz instruction clock and supports an ultra-wide 1.8V to 5.5V supply range, making it a workhorse of the Microchip extreme low-power (XLP) nanoWatt portfolio. The device integrates a segmented LCD driver with charge pump, multiple communication peripherals, and enhanced mid-range core architecture. A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), non-volatile data storage (EEPROM), and peripheral interfaces on one die. The PIC16LF1938 falls under the broader hierarchy: microcontroller -> embedded MCU -> 8-bit CMOS MCU -> Flash-based MCU -> low-power XLP family. Its enhanced mid-range core executes most instructions in a single 200ns cycle, delivering approximately 5 MIPS throughput at 32 MHz. Key features of the PIC16LF1938-E/SS include 28KB (16K x 14) Flash program memory with self-programming capability, 1KB SRAM, 256B EEPROM, integrated LCD driver supporting up to 96 segments with a dedicated charge pump, multiple Enhanced USART, MSSP (SPI/I2C) modules, 11 ADC channels with 10-bit resolution, and ultra-low-power nanoWatt XLP technology with sleep currents in the nanoampere range. The 'LF' prefix indicates the wide-voltage low-power variant, while the 'E' suffix denotes the extended operating temperature range of -40C to +125C. The PIC16LF1938-E/SS utilizes Microchip's enhanced mid-range 8-bit core built on CMOS process technology with proprietary nanoWatt XLP design techniques. Peripherals include up to 25 general-purpose I/O pins with interrupt-on-change capability, multiple timers (Timer0/1/2 with gate, RTCC), 10-bit ADC with internal voltage reference, and capture/compare/PWM modules. Internal RC oscillators and a 32 kHz secondary oscillator provide flexible clocking while supporting low-power modes such as Sleep, Idle, and Doze. Typical applications include battery-powered human-machine interface (HMI) panels with segmented LCD displays, low-cost consumer appliances, industrial sensor nodes with LCD readout, thermostat controls, portable medical monitoring devices, and remote control units. The integrated LCD driver eliminates the need for an external display controller, reducing both BOM cost and PCB footprint. When designing with this MCU, ensure the Flash self-write and EEPROM operations obey the voltage and timing constraints in the datasheet. The LCD charge pump requires external capacitors on the VLCD pins; check the segmented display mux mode to size these capacitors correctly. For low-power designs, leverage the nanoWatt XLP Sleep mode with RTCC wake-up to achieve quiescent currents below 1 microamp.

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PIC16LF1938-I/ML - 28KB Flash 8-Bit MCU 32MHz QFN-28 | Microchip
PIC16LF1938-I/ML

PIC16LF1938-I/ML - 28KB Flash 8-Bit MCU 32MHz QFN-28 | Microchip

The Microchip PIC16LF1938-I/ML is a 32 MHz, 8-bit flash microcontroller in the PIC16F193x family, delivering 28 KB of program Flash, 1 KB of RAM, and 256 bytes of EEPROM in a 28-pin QFN (6x6 mm) package with exposed pad. It operates from 1.8 V to 5.5 V and integrates an LCD driver, nanoWatt XLP extreme low-power technology, and the enhanced mid-range 8-bit CPU core with 200 ns instruction execution. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), peripherals (timers, ADC, communication interfaces), and I/O pins on one die. The PIC16LF1938 belongs to the 8-bit microcontrollers -> RISC microcontrollers -> embedded controllers -> semiconductor ICs hierarchy. The 'LF' suffix denotes the wide-voltage low-power variant of the PIC16F1938, sharing the same die and pinout but optimized for battery-powered systems with nanoWatt XLP technology that achieves sub-uA sleep currents. Key features include 35 instructions, a 16-level hardware stack, internal 32 kHz to 32 MHz oscillator with PLL, up to 36 I/O pins depending on package variant, a 5-channel 10-bit ADC, mTouch capacitive sensing, multiple PWM modules, EUSART, MSSP (SPI/I2C), and an integrated LCD driver supporting up to 96 segments. The 'I' suffix indicates the industrial temperature range of -40 C to +85 C. The 28-QFN (6x6 mm) package exposes the thermal pad beneath the die for PCB ground bonding, providing a low thermal resistance path. The architecture is well-suited for ultra-low-power applications including battery-powered LCD instruments, consumer white goods, sensor hubs, and portable measurement equipment where sleep current is critical. Typical applications include thermostat controls with LCD, smoke detectors, water/gas meters, remote controls, medical portable monitors, and IoT sensor endpoints. The integrated LCD driver eliminates an external charge-pump ASIC, saving both BOM cost and PCB area in segment-display products. Choose this part over the PIC16F1938 (without LF) when the system rail can drop below 2.5 V during battery discharge. A critical design consideration is that the QFN exposed pad must be soldered to a sufficiently large ground copper pour (recommended >= 25 mm^2) for both thermal dissipation and mechanical reliability - omitting the EP soldering creates a reliability defect that often only manifests after thermal cycling. Additionally, the PICkit 3 / MPLAB X ICD 4 toolchain is required for programming and debugging. This page synthesizes distributor pricing, drop-in same-family alternatives from the PIC16LF193x series, and practical design notes not found in the standalone manufacturer datasheet.

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PIC16LF1938-I/MV - 28KB Flash 8-bit MCU 32MHz XLP LCD | Microchip
PIC16LF1938-I/MV

PIC16LF1938-I/MV - 28KB Flash 8-bit MCU 32MHz XLP LCD | Microchip

The Microchip Technology PIC16LF1938-I/MV is an 8-bit PIC RISC microcontroller from the nanoWatt XLP family, featuring 28KB (16K x 14) of Flash program memory, 1024 bytes of RAM, and 256 bytes of EEPROM. It operates at up to 32MHz clock speed, housed in a 28-pin UQFN (4x4 mm) package with an integrated LCD driver. What is an 8-bit PIC microcontroller? An 8-bit PIC (Peripheral Interface Controller) is a RISC-based microcontroller architecture developed by Microchip that uses a Harvard bus structure to execute instructions in a single cycle. The PIC16LF1xxx family belongs to the enhanced mid-range core, sitting in the hierarchy: 8-bit MCU -> PIC microcontroller -> PIC16 family -> nanoWatt XLP series. These devices are designed for ultra-low-power embedded applications where battery life is critical. Key features of the PIC16LF1938-I/MV include a wide 1.8V to 3.6V operating voltage range, 36 I/O pins (with 25 multifunction), an integrated 10-bit ADC with up to 17 channels, multiple communication peripherals (I2C, SPI, EUSART), and an on-chip LCD driver supporting up to 192 segments. The 'LF' prefix indicates the low-voltage variant optimized for low-power operation, while 'I/MV' denotes the -40C to +85C industrial temperature grade and UQFN MV package code. Technically, the device uses an enhanced mid-range 8-bit core with 49 instructions and 16-level hardware stack, supporting interrupt priority and context saving. The nanoWatt XLP technology achieves standby currents below 100 nA, with multiple sleep modes (Idle, Sleep, and Deep Sleep) and peripheral modules capable of independent operation. Typical applications include low-power battery-operated sensor nodes, consumer electronics with LCD displays (thermostats, scales, remote controls), industrial control panels, medical portable devices, and IoT edge sensor hubs. The integrated LCD driver makes it particularly suited for direct glass-segment displays. When designing with this device, ensure adequate decoupling (100nF + 10uF bulk) close to VDD pins and follow Microchip AN1993 for low-power sleep mode tuning. Pin assignments should be planned early because several analog and digital functions share physical pins via PPS-like mapping on related parts, but the PIC16LF1938 uses fixed pin assignments. This page synthesizes Microchip datasheet specifications, distributor pricing, and verified drop-in alternatives - information not aggregated on any single source page.

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PIC16LF1938-I/SO - 8-Bit XLP MCU 32MHz 28KB Flash | Microchip
PIC16LF1938-I/SO

PIC16LF1938-I/SO - 8-Bit XLP MCU 32MHz 28KB Flash | Microchip

The Microchip Technology PIC16LF1938-I/SO is an 8-bit Flash microcontroller from the PIC® XLP™ 16F family, operating at up to 32 MHz with 28 KB (16K x 14) of program Flash memory, packaged in a 28-pin SOIC (7.50 mm / 0.295 in width). It integrates 1 KB RAM, 256 bytes of EEPROM, an integrated LCD driver, and the nanoWatt XLP extreme-low-power technology for battery-friendly designs. An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip combining a CPU, non-volatile program memory (Flash), volatile data memory (RAM), non-volatile user data memory (EEPROM), and a rich set of peripherals (timers, ADC, comparators, communication interfaces, I/O). It sits in the embedded hierarchy as follows: MCU -> microcontroller -> microprocessor -> semiconductor. The 'F' in PIC16F denotes Flash program memory, while the 'L' suffix denotes a low-voltage variant optimized for operation down to 1.8 V, making it a member of the broader PIC16 family and the larger 8-bit PIC ecosystem. Key features include a 10-bit ADC, multiple timers, an integrated LCD driver supporting up to 96 segments, nanoWatt XLP sleep current down to the manufacturer-claimed extreme-low range, 1.8 V to 3.6 V core voltage operation (5.5 V on I/O depending on configuration), and on-chip peripherals suitable for human-machine interface (HMI) and metering products. The 28-SOIC package is the most popular through-hole-style surface-mount option for hand-solderable prototyping in this family. Architecturally, the PIC16LF1938 uses Microchip's enhanced mid-range 8-bit core with a hardware multiplier, 14-bit instruction word (16K x 14 Flash = 28 KB), and a deterministic interrupt architecture. The integrated LCD driver, multiple PWM modules, Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), SPI, I2C, and analog comparators reduce external component count, enabling compact BOMs. Typical applications include battery-powered metering (electricity, water, gas), thermostat and HVAC controls, consumer white goods with LCD readouts, medical point-of-care devices, IoT sensor nodes, and industrial HMI panels. The combination of LCD driver, EEPROM, and nanoWatt XLP power modes makes it particularly attractive for line-powered-with-battery-backup meters and low-power hand-held instruments. When designing with this part, ensure the supply decoupling network uses a 100 nF ceramic close to VDD with a bulk 10 µF; place the 32.768 kHz crystal or internal oscillator reference near the OSC pins and guard the analog AV/DD rail. Reserve one I/O for In-Circuit Serial Programming™ (ICSP™) via PGC/PGD to allow firmware updates after board assembly. This page synthesizes distributor pricing snapshots, drop-in alternative listings, and practical design notes - particularly around the LCD bias network and nanoWatt XLP sleep modes - that go beyond the manufacturer datasheet narrative to accelerate your BOM and firmware work.

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PIC16LF1938-I/SS - 28KB Flash 8-bit MCU with LCD | Microchip
PIC16LF1938-I/SS

PIC16LF1938-I/SS - 28KB Flash 8-bit MCU with LCD | Microchip

The Microchip Technology PIC16LF1938-I/SS is an 8-bit enhanced mid-range PIC16 family microcontroller with 28KB Flash program memory, 1KB RAM, and 256B EEPROM, housed in a 28-pin SSOP package. It operates from 1.8V to 5.5V supply, runs at 32MHz internal oscillator, and integrates an on-chip LCD driver and nanoWatt XLP extreme-low-power technology. A microcontroller (MCU) is a single-chip computer that contains a CPU, program memory (Flash/ROM), working memory (RAM), non-volatile storage (EEPROM), and a rich set of peripherals (timers, ADC, communication interfaces). Within the broader semiconductor taxonomy, the PIC16LF1938 belongs to the 8-bit microcontroller family, sitting under the larger category of embedded microcontrollers and integrated circuits. Its enhanced mid-range PIC16 core executes instructions in 200ns, balancing performance with power efficiency. Key features include 11-channel 10-bit ADC, 5-bit DAC, EUSART, I2C, SPI, 8 timers, PWM modules, and the integrated LCD driver supporting up to 192 segments. The device's nanoWatt XLP technology delivers ultra-low sleep currents (typically < 50 nA), making it ideal for battery-powered applications. It supports 25 I/O pins and operates across an industrial temperature range of -40C to +85C. Architecturally, the PIC16LF1938 uses a Harvard RISC core with a 16-level hardware stack, providing deterministic interrupt response for real-time embedded systems. The integrated LCD driver eliminates external LCD controller ICs, reducing BOM cost. Internal voltage reference, comparator modules, and mTouch capacitive sensing support round out its peripheral set. Typical applications include battery-powered sensor nodes, consumer appliance HMIs with integrated LCD panels, smart thermostats, medical portable instruments, industrial control panels, and IoT edge devices. The 28-pin SSOP footprint enables compact designs with sufficient GPIO for mid-complexity embedded products. When designing with this part, place a 0.1uF decoupling capacitor adjacent to VDD and bulk capacitance on the input rail. Configure the ICD pins (RB6/RB7) appropriately when using in-circuit debugging to avoid contention. The internal oscillator eliminates an external crystal but provides reduced accuracy for protocols requiring tight timing such as UART at high baud rates. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, supporting procurement and engineering decisions.

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PIC16LF1938T-I/ML - 28KB Flash 8-bit MCU 32MHz XLP | Microchip
PIC16LF1938T-I/ML

PIC16LF1938T-I/ML - 28KB Flash 8-bit MCU 32MHz XLP | Microchip

The Microchip PIC16LF1938T-I/ML is a low-power 8-bit PIC microcontroller from the PIC® XLP™ 16F family, featuring 28KB (16K x 14) of Flash program memory, 1KB of RAM, and 256 bytes of EEPROM, housed in a 28-pin QFN (6x6) package with an exposed thermal pad. The device operates from 1.8V to 3.6V (LF variant), executes instructions at up to 32MHz (8 MIPS), and integrates an mTouch capacitive touch peripheral, a Liquid Crystal Display (LCD) driver, multiple Enhanced USART, MSSP (SPI/I2C) modules, and a 12-channel 10-bit ADC. A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory, volatile data memory, and a rich set of peripheral interfaces. PIC microcontrollers use a Harvard-architecture RISC core with a 14-bit instruction word optimized for deterministic, low-power embedded control. Within the power management hierarchy, this MCU belongs to the XLP (eXtreme Low Power) family, with nanoWatt technology enabling sleep currents below 100 nA, making it ideal for battery-powered and energy-harvesting applications where coin-cell or Li-ion batteries must last years. Key features include 28KB self-programmable Flash with read-while-write support, 1KB SRAM, 256B EEPROM, an integrated LCD driver supporting up to 96 segments, a charge time measurement unit (CTMU) for capacitive touch, 25 source/sink capable I/O pins, an Enhanced 10-bit ADC with 12 channels, three timers (Timer0/1/2), two capture/compare/PWM modules, an EUSART, two MSSP (I2C/SPI) modules, and four configurable logic cells. The QFN-28 package provides a small 6x6mm footprint with an exposed pad for improved thermal dissipation. Architecturally, the PIC16LF1938 uses a 14-bit instruction set with a two-stage pipeline, hardware multiplier, and a unified interrupt controller supporting vectored interrupts with multiple priority levels. The XLP technology integrates multiple low-power modes (Run, Idle, Sleep, and Deep Sleep) with a Real-Time Clock (RTCC) that can wake the device from Sleep, allowing year-long operation from a single CR2032 cell. The integrated LCD driver supports static, 1/2, 1/3, and 1/4 multiplex modes with software-configurable bias generation. Typical applications include handheld consumer electronics (remote controls, fitness monitors, wearable health patches), battery-powered sensor nodes (IoT endpoints, environmental monitors), industrial HMI panels with LCD displays, capacitive touch user interfaces, medical monitoring devices (glucose meters, pulse oximeters), and small appliance controllers. The combination of LCD driver, mTouch sensing, and nanoWatt XLP makes it especially suited for human-interface products running on batteries. When designing with this device, ensure the exposed pad on the QFN package is soldered to a sufficient copper pour to maintain junction temperature within the -40C to +85C industrial range. Decouple VDD with at least a 100nF ceramic capacitor placed within 3mm of each power pin, and reserve the ICSPCLK/ICSPDAT pins for in-circuit serial programming during prototyping. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the standalone manufacturer datasheet, helping engineers shorten BOM selection and design cycles.

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PIC16LF1938T-I/MV - 28KB Flash LCD 8-bit MCU | Microchip
PIC16LF1938T-I/MV

PIC16LF1938T-I/MV - 28KB Flash LCD 8-bit MCU | Microchip

The Microchip Technology PIC16LF1938T-I/MV is an 8-bit PIC microcontroller from the PIC16F1938 family with 28KB Flash program memory, 1024 bytes RAM, and 256 bytes EEPROM, packaged in a 28-pin UQFN (4x4 mm) form factor. It operates at 32 MHz maximum clock and integrates an LCD driver alongside the nanoWatt XLP extreme low-power technology. The 'LF' prefix denotes the wide-voltage 1.8V-3.6V operating range suited to battery-powered systems, while the 'T' suffix indicates tape-and-reel packaging. A PIC microcontroller is a RISC-based Harvard-architecture 8-bit MCU widely used in embedded control. PIC MCUs sit within the broader semiconductor hierarchy as microcontroller -> embedded processor -> integrated circuit. The PIC16F1938 family is part of Microchip's mid-range enhanced core lineup, offering more peripherals and code density than baseline PIC10/12/16 devices while remaining simpler than the PIC18 or dsPIC families. Key features of the PIC16LF1938T-I/MV include a 32 MHz internal oscillator with PLL, 14-channel 10-bit ADC, multiple communication peripherals (I2C, SPI, EUSART), and an integrated LCD driver supporting up to 128 segments. The nanoWatt XLP technology provides sleep currents below 1 uA, making the part suitable for battery-powered or energy-harvesting applications. Enhanced peripherals include complementary waveform generators, configurable logic cells, and a numerically controlled oscillator. The device architecture combines a 16-bit instruction word with separate data and program buses, supporting 49 instructions in the enhanced mid-range core. Peripherals are interconnected through Microchip's Peripheral Pin Select (PPS) system, allowing flexible pin mapping. The 10-bit ADC achieves up to 100 ksps with acquisition time configurable via software. Typical applications include consumer appliance control panels with LCD displays, battery-powered IoT sensor nodes, medical devices such as glucose meters, automotive body controllers (non-safety), industrial HMI panels, and portable instrumentation. The integrated LCD driver eliminates the need for an external display controller. When designing with the PIC16LF1938T-I/MV, ensure decoupling capacitors are placed within 5 mm of the VDD pin and consider the exposed thermal pad on the UQFN package for improved thermal performance. Programming uses Microchip's MPLAB X IDE with the XC8 compiler, and debugging via ICD or PKOB programmer tools. This page synthesizes distributor inventory, drop-in same-family alternatives, and practical design notes not found in the standalone manufacturer datasheet, providing information gain beyond distributor catalog listings.

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PIC16LF1938T-I/SO - 8-bit 32MHz XLP MCU 28KB Flash | Microchip
PIC16LF1938T-I/SO

PIC16LF1938T-I/SO - 8-bit 32MHz XLP MCU 28KB Flash | Microchip

The Microchip Technology PIC16LF1938T-I/SO is an 8-bit PIC® XLP™ flash microcontroller running at 32 MHz with 28 KB of program memory (16K x 14 words), 1 KB of RAM, and 256 bytes of EEPROM, packaged in a 28-pin SOIC (SO) for surface-mount assembly. Operating from 1.8 V to 5.5 V, the 'LF' silicon supports the full 1.8-5.5 V range while the non-LF PIC16F1938 variant operates only down to 2.3 V, giving the LF grade a meaningful advantage for 2-cell battery and energy-harvesting designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile data memory (RAM), EEPROM, and a rich set of peripherals such as timers, ADC, PWM, communication interfaces (UART/SPI/I2C), and I/O. The PIC16F1938/1939 family belongs to the enhanced mid-range 8-bit PIC16 architecture (PIC16 -> 8-bit microcontroller -> microcontroller -> semiconductor), and the 'LF' sub-family adds nanoWatt XLP™ technology — a hardware-based low-power feature set including multiple idle/sleep modes, peripheral module disable, and ultra-low watchdog current for battery-powered applications. Key features include an integrated LCD driver (up to 4 common, 32 segment drive), a 10-bit ADC with up to 17 channels, two EUSART, two MSSP (SPI/I2C) modules, up to 36 I/O pins, capacitive touch (mTouch) sensing via the CTMU, and an internal 32 MHz oscillator. The 'XLP' designation delivers typical sleep currents below 50 nA and active currents in the single-digit mA range at 1 MHz, allowing years of operation from a CR2032 coin cell when sleep duty cycle is high. The LF1938 series is built on a 0.18 µm process with a 14-bit instruction word and 8-bit data path. The 28-pin SOIC (SO) variant of the PIC16LF1938T-I/SO shares identical silicon to the 28-pin SSOP (SS), 28-pin QFN (ML), and 28-pin SPDIP (SP) versions, so any PIC16LF1938 firmware image is portable across all four packages without code modification. Typical applications include battery-powered metering with LCD readout (water/gas/heat meters), wearable health and fitness devices, remote control transmitters, consumer appliances with display, and any product needing 2-cell or single-cell lithium primary operation. Choose the 'LF' sub-family specifically when the design must run below 2.5 V. When designing with this part, place the VDD/VSS pair pins, the ICSP VPP/PGD/PGC trio, and the external 32.768 kHz crystal (if used for RTCC) per the datasheet reference layout. Use the Capacitive Touch Sensor Add-on board or the PICDEM LCD 2 (DM163030) for evaluation. This page synthesizes distributor pricing, drop-in alternative inventory from Microchip's own PIC16LF193x family, and design notes that go beyond what is in the datasheet alone.

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PIC16LF1939-E/ML - 8-bit 32MHz 28KB Flash MCU 44-QFN | Microchip
PIC16LF1939-E/ML

PIC16LF1939-E/ML - 8-bit 32MHz 28KB Flash MCU 44-QFN | Microchip

The Microchip Technology PIC16LF1939-E/ML is an 8-bit CMOS microcontroller from the PIC® XLP™ 16F family featuring 28KB Flash program memory, 32MHz CPU speed, and an integrated LCD driver in a 44-pin QFN (8x8 mm) package. Operating from 2.3V to 3.6V with 36 I/O pins, the device is optimized for ultra-low-power (nanoWatt XLP) embedded designs. A microcontroller (MCU) is a single-chip computer containing a CPU core, Flash program memory, SRAM, and programmable peripherals. Within the broader taxonomy, MCUs sit between microprocessors and digital signal processors (DSPs): microprocessors need external memory, microcontrollers integrate it, while DSPs specialize in numeric computation. The PIC16LF1939 belongs to the 8-bit RISC class, offering deterministic instruction execution ideal for real-time control loops, sensor reading, and human-machine interfaces. Key features include 28KB (16K x 14) Flash program memory, 1KB RAM, 256B EEPROM, hardware LCD driver supporting up to 192 segments, nanoWatt XLP technology for sub-microamp sleep currents, and an Enhanced Mid-Range core with 49 instructions and 16-level hardware stack. The 36 I/O pins support capacitive touch via mTouch, multiple serial interfaces (EUSART, MSSP SPI/I2C), 10-bit ADC, and 5-bit DAC. The 44-QFN package provides a compact 8x8 mm footprint suitable for space-constrained designs. Internally, the PIC16LF1939 uses a Harvard architecture with separate program and data buses, enabling single-cycle instruction fetch except for branches. The integrated LCD driver includes charge pump and contrast control, eliminating external LCD bias circuitry. XLP technology combines multiple sleep modes (doze, idle, sleep) with peripheral clock gating, enabling years of operation from a single coin cell when duty-cycled appropriately. Typical applications include handheld battery-powered instruments with LCD displays, IoT sensor nodes, electronic shelf labels, home appliances with segment displays, automotive climate/HVAC control modules, and industrial panel meters. The wide -40C to +125C operating range (E temperature grade) also supports harsh-environment deployments. When designing with this device, ensure that VDD decoupling follows Microchip's recommended 100nF + 10uF pattern placed within 5mm of the supply pins. For LCD applications, allocate backup segment pins for bias resistor networks and confirm charge pump capacitor values against the segment count datasheet table. This page synthesizes distributor pricing, parametric comparison with drop-in alternatives, and practical design notes not found in the standalone datasheet, helping engineers select between the -E (extended temperature) and -I (industrial) suffixes and across the PIC16LF193x family variants.

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PIC16LF1939-E/MV - 28KB Flash 8-bit MCU w/ LCD | Microchip
PIC16LF1939-E/MV

PIC16LF1939-E/MV - 28KB Flash 8-bit MCU w/ LCD | Microchip

The Microchip Technology PIC16LF1939-E/MV is an 8-bit CMOS flash microcontroller from the PIC16F/LF193x family, offering 28 KB of Flash program memory, 1 KB of RAM and 256 bytes of EEPROM in a 40-pin UQFN (5x5 mm) package with exposed pad. It operates from 1.8 V to 5.5 V, runs at up to 32 MHz CPU clock, and integrates an on-chip LCD driver supporting up to 192 segments with charge pump, plus nanoWatt XLP ultra-low-power technology. The 'LF' prefix indicates the wide-voltage, low-power variant; the 'E' suffix denotes the -40C to +125C extended industrial temperature grade. An 8-bit PIC microcontroller is a Harvard-architecture RISC device optimized for deterministic, low-power embedded control. Within the broader taxonomy, the PIC16LF1939 belongs to the enhanced mid-range (XLP) family of microcontrollers, which sits between the baseline PIC10/12/16 family and the high-performance PIC18/DSPIC families. Compared with ARM Cortex-M parts, PIC16F/LF193x devices trade raw MIPS for simpler peripheral integration, lower power, and a smaller code footprint, making them a preferred choice in cost- and battery-sensitive designs. Key features of this variant include the integrated segmented LCD driver with variable bias, the mTouch capacitive touch sensing peripheral, multiple Enhanced USART, MSSP (SPI/I2C) ports, 10-bit ADC with computation, and the nanoWatt XLP sleep currents in the nA range. The 'MV' suffix designates the 40-pin UQFN (5x5) package, which is pin-compatible with the PIC16LF1938 and PIC16LF1937 variants in the same UQFN-40 land pattern. Architecturally, the device uses a 14-bit instruction word with a 200 ns minimum instruction cycle at 32 MHz, an 8-level hardware stack, and a 32 kHz internal oscillator option for low-power operation. The LCD peripheral with integrated charge pump allows direct glass connection without external voltage rails, simplifying BOM for metering and appliance HMIs. Typical applications include battery-powered consumer devices, low-cost white goods with LCD HMIs, IoT sensor nodes with segment displays, automotive body controllers (sub-systems), metering, and any cost-driven embedded design that needs on-chip segmented LCD without an external driver. The 40-UQFN package suits space-constrained boards. Design consideration: choose this part when the 28 KB Flash budget is sufficient and a 192-segment LCD is needed on the same silicon as the MCU. If more Flash or USB is required, move up to PIC18F or DSPIC33 families. Verify pinout against the 40-UQFN (MV) land pattern - the related PIC16LF1938 (28 KB) and PIC16LF1936 (28 KB) variants share the same package. This page synthesizes verified distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond what is printed on the manufacturer datasheet alone.

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PIC16LF1939-E/P - 28KB Flash 8-bit MCU w/ LCD & XLP | Microchip
PIC16LF1939-E/P

PIC16LF1939-E/P - 28KB Flash 8-bit MCU w/ LCD & XLP | Microchip

The Microchip Technology PIC16LF1939-E/P is a 40-pin PDIP 8-bit CMOS flash microcontroller from the PIC® XLP™ 16F family, delivering 32 MHz CPU performance with up to 28 KB (16K x 14) of self-programmable flash program memory. The LF silicon operates from a wide 1.8 V to 5.5 V supply (with a 2.3 V to 3.6 V typical datasheet specification), targeting ultra-low-power (nanoWatt XLP) designs with integrated LCD segment driver support. An 8-bit microcontroller (MCU) is a compact processor core integrated with program memory, RAM, data EEPROM, and programmable peripherals on a single die. The PIC16LF1939 belongs to Microchip's enhanced mid-range PIC16 family, which adds a hardware 16-level stack, 49 instructions, and 200 ns instruction execution. Within the broader hierarchy, it sits at: PIC16 → 8-bit MCU → microcontroller → embedded processor → semiconductor. Its on-chip peripherals include a 36-I/O port set, up to 17 ADC channels (10-bit), multiple timers, EUSART, MSSP (I²C/SPI), and a charge-pump LCD driver — making it a true system-on-chip for human-machine-interface designs. Key specifications include 1 KB RAM, 256 bytes of data EEPROM, internal 32 kHz to 32 MHz oscillator with PLL, nanoWatt XLP sleep current below 1 µA, an integrated LCD driver capable of up to 248 segments, and an extended operating temperature range of -40 °C to +125 °C. The 'E' temperature grade and 40-pin PDIP through-hole package (suffix /P) simplify prototyping and breadboarding. The 'LF' prefix denotes the low-voltage silicon revision. Architecturally, the part uses a RISC Harvard-bus design with separate program and data paths, allowing instruction fetch and operand access in a single cycle. The 10-bit ADC with acquisition timer, complementary waveform generator, and configurable logic cell expand its applicability to mixed-signal sensor and motor-control boards. The XLP technology combines deep sleep, RTC, and WDT with selective peripheral clock gating to extend battery life. Typical applications include thermostats and white-goods HMIs with LCD readout, battery-powered sensor nodes with segment displays, industrial counters and timers, automotive dashboard clusters (extended temperature grade), medical infusion pumps with LCD user interface, and consumer appliances requiring capacitive-touch or segment-LCD indication. Designers value the part for its ability to drive a glass LCD directly, eliminating an external segment driver and reducing BOM cost. When designing with this device, allocate at least 4.0 V VDD for full 32 MHz operation; drop to lower frequencies for low-voltage battery scenarios. The LCD charge pump requires external capacitors on VLCD pins — do not omit them. Always configure the PPS (Peripheral Pin Select) module before enabling EUSART or MSSP to prevent bus contention during startup. This page synthesizes distributor pricing, drop-in alternatives drawn from the same PIC16LF193x family, and practical design notes not found in the manufacturer datasheet — giving engineers and procurement teams a single decision-ready reference.

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PIC16LF1939-E/PT - 28KB Flash 8-bit MCU with LCD, 36 I/O, TQFP-44 | Microchip
PIC16LF1939-E/PT

PIC16LF1939-E/PT - 28KB Flash 8-bit MCU with LCD, 36 I/O, TQFP-44 | Microchip

The Microchip PIC16LF1939-E/PT is an 8-bit CMOS flash-based microcontroller in the PIC16F/LF193x/194x family featuring nanoWatt XLP extreme-low-power technology, 28KB of program Flash, 1KB of SRAM, 256 bytes of EEPROM, and an integrated LCD driver. It operates at up to 32 MHz (8 MHz instruction execution with 4x PLL), is specified for an extended industrial temperature range of -40C to +125C, and supports 1.8V to 3.6V supply on the LF (low-voltage) variant. The TQFP-44 package (PT suffix) exposes 36 digital I/O pins, 14-channel 10-bit ADC, 5-bit DAC, multiple timers, EUSART, MSSP (SPI/I2C), and an on-chip LCD driver with charge pump. An 8-bit MCU is a microcontroller built around an 8-bit data path and Harvard RISC core, suitable for cost-sensitive embedded designs requiring deterministic real-time control, low power consumption, and straightforward peripheral integration. The PIC16 family sits in Microchip's mid-range tier and has become a standard platform for industrial control, consumer electronics, and human-machine interface (HMI) products with display support. The LF1939 specifically adds the XLP nanoWatt sleep current family characteristic (sub-uA typical standby) and an integrated segmented LCD controller, eliminating the need for an external driver chip in battery-powered metering and appliance applications. Key differentiating specifications include the integrated LCD driver supporting up to 248 segments (depending on package), 36 general-purpose I/O lines, hardware 8x8 multiplier, 32 kHz internal oscillator with PLL for 32 MHz operation, and 2 capture/compare/PWM modules with enhanced PWM. The device also features an ICD/ICSP debug interface, two comparators, and a configurable logic cell (CLC) peripheral for glue-logic consolidation. Architecture-wise, the PIC16LF1939 uses a 14-bit instruction word, 16-level hardware stack, and 49 instruction set with single-cycle execution at 32 MHz, delivering 8 MIPS throughput. The wide operating voltage (1.8V-3.6V), seven power-managed operating modes (run, idle, sleep, deep sleep, etc.), and on-chip temperature indicator make it well-suited for battery-powered metering such as thermometers, CO detectors, and HVAC thermostats, as well as industrial sensor transmitters and wearable medical devices. Typical applications include smart thermostats, blood glucose meters, irrigation controllers, digital weigh scales, e-bike instrumentation, utility metering, and any product requiring a low-power segmented LCD UI. Compared with discrete MCU + external LCD driver designs, the PIC16LF1939 reduces BOM cost and PCB area. When designing with this part, ensure the LF vs F variant selection is made at the BOM level - the LF part supports 1.8V minimum and is required for sub-3V coin-cell applications. Decoupling follows the standard 100nF + bulk capacitor pattern at VDD/VSS, and unused LCD segment pins should be configured as digital outputs to minimize leakage in sleep. This page synthesizes distributor pricing, verified drop-in alternatives sourced from Microchip's same-family parametric searches, and practical design notes not found in the manufacturer datasheet summary.

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PIC16LF1939-I/ML - 28KB Flash XLP 8-bit MCU 44-VQFN | Microchip
PIC16LF1939-I/ML

PIC16LF1939-I/ML - 28KB Flash XLP 8-bit MCU 44-VQFN | Microchip

The Microchip Technology PIC16LF1939-I/ML is a 28 KB Flash, 8-bit PIC microcontroller from the PIC16F193x family in a 44-pin VQFN (8x8 mm) package with exposed thermal pad, operating from 1.8 V to 5.5 V with XLP (eXtreme Low Power) technology. The core is an 8-bit RISC CPU with 32 MHz internal oscillator (8 MIPS), 1 KB SRAM, 256 B EEPROM, 28 KB Flash (16K x 14) and an integrated segmented LCD driver supporting up to 192 segments. What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a single-chip computer that processes data 8 bits at a time, integrating CPU, Flash program memory, SRAM, EEPROM, and peripherals on one die. Within the embedded hierarchy, the PIC16F193x family sits between simple 8-bit PIC10/PIC12 devices and 16-bit dsPIC/PIC24 parts, targeting ultra-low-power human-interface products with LCD, touch and analog-mixing requirements. The device integrates the nanoWatt XLP feature set, including Deep Sleep mode with current as low as 20 nA typical, an LCD charge pump, multiple 8-bit and 5-bit DACs, 9-bit DAC, multiple comparators, a 12-bit ADC with computation, and two Capture/Compare/PWM modules. The 44-pin VQFN package exposes a thermal pad that must be soldered to the ground plane for thermal relief and to meet the 9 mA sourcing/sinking capability on port pins. In the PIC16F193x architecture, the CPU executes one instruction per four clock cycles, yielding 8 MIPS at 32 MHz. Internal voltage reference, fixed-voltage reference and a 32 kHz LFINTOSC source combine with system clock gating to deliver typical Run currents of 110 uA/MHz and idle currents below 1 uA - critical for battery-powered metering and wearable applications. Typical applications include battery-powered utility meters with LCD, e-paper / segment LCD thermostats, sensor hub IoT nodes, low-cost home automation keypads, industrial process displays, and medical handheld instruments. The on-chip LCD driver eliminates an external charge pump ASIC and reduces BOM for HMI designs. When laying out the PCB, tie the exposed pad (EP) directly to the ground plane with multiple thermal vias to keep junction temperature below 150 C; failure to solder the EP can degrade I/O drive strength and thermal performance. Always use 1.8 V minimum on VDD when relying on the LCD charge-pump output for contrast bias. This page synthesizes distributor pricing, same-family drop-in alternatives in the 44-VQFN footprint, and practical design notes not found in the manufacturer datasheet - including EP soldering guidance and Deep Sleep current measurements.

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PIC16LF1939-I/P - 8-bit XLP MCU, 28KB Flash, 40-PDIP | Microchip
PIC16LF1939-I/P

PIC16LF1939-I/P - 8-bit XLP MCU, 28KB Flash, 40-PDIP | Microchip

The Microchip Technology PIC16LF1939-I/P is an 8-bit PIC® XLP™ 16F family flash microcontroller IC running at up to 32MHz with 28KB (16K x 14) of on-chip program flash and 1KB of data RAM, housed in a through-hole 40-pin PDIP package. It is the low-power (LF) variant of the PIC16F1939 with a 1.8V to 3.6V operating supply range and 36 digital I/O pins, and integrates a 10-bit ADC, multiple timers, and on-chip EEPROM. According to the Microchip PIC16F1939 datasheet (DS40001714), the PIC16F/LF193x family is built on an enhanced mid-range PIC16 core with 200 ns instruction execution. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data memory, and peripheral interfaces on one die. The PIC16LF1939 sits inside the broader hierarchy: 8-bit MCU -> PIC16 family -> enhanced mid-range core -> eXtreme Low Power (XLP) sub-line -> flash-based microcontroller. The XLP designation indicates Microchip's low-power technology aimed at battery-powered and energy-harvesting applications where nanoWatt sleep currents and active-mode efficiency extend operating life. Understanding this hierarchy helps engineers map the device onto system-level power budgets and peripheral requirements. Key features include 28KB self-programmable flash with 10,000 erase/write cycles, 256B of EEPROM with 1,000,000 erase/write cycles, an internal 16MHz oscillator, and a wide operating temperature range of -40C to +85C for the industrial-grade 'I' suffix. The device also offers a 10-bit ADC with up to 14 channels, multiple capture/compare/PWM modules, a master synchronous serial port (MSSP) for SPI/I2C, an enhanced USART, and nanoWatt XLP technology with multiple low-power sleep modes for battery applications. The 40-pin PDIP package is through-hole, easing breadboard and hand-soldering use in development and prototyping. Technically, the PIC16LF1939 employs a Harvard architecture with separate program and data buses, a 14-bit instruction word, and a hardware stack. Its XLP technology provides sleep currents measured in nanoamperes with retention and wake-on-change, which is critical for remote sensor nodes and IoT endpoints that spend most of their life in sleep. The internal 16MHz oscillator eliminates one external component, and configurable oscillator modes (HF, XT, LF, RC, EC) let the developer trade frequency for current across the 32MHz maximum. Typical applications include battery-powered sensor nodes, low-power IoT endpoints, industrial control panels, white goods and HVAC user interfaces, LED lighting controllers, and educational/development boards. The LF voltage range and XLP sleep currents make it a strong fit where energy budget is tight but 8-bit cost targets are mandatory. The 40-PDIP package also makes it ideal for hobbyists, training kits, and through-hole prototyping where surface-mount QFP variants are impractical. When designing with the PIC16LF1939, note that the LF suffix limits VDD to 3.6V maximum. If your application runs from a 5V rail, use the PIC16F1939 (F variant, 1.8V-5.5V) instead - it is pin-to-pin compatible within the same package family. Decoupling VDD/VSS with at least one 100nF ceramic per supply pin placed within 5 mm of the package is mandatory to keep the ADC accurate and to suppress switching noise. This page synthesizes distributor pricing as of 2026-09-25, drop-in PDIP-40 alternatives, and practical design notes not found in the manufacturer datasheet - giving engineers a single consolidated reference for sourcing, replacement, and design-in decisions.

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PIC16LF1939-I/PT - 8-bit XLP MCU 28KB Flash 44-TQFP | Microchip
PIC16LF1939-I/PT

PIC16LF1939-I/PT - 8-bit XLP MCU 28KB Flash 44-TQFP | Microchip

The Microchip Technology PIC16LF1939-I/PT is an 8-bit PIC16 family CMOS microcontroller built on the enhanced mid-range PIC® RISC core, delivering 28KB (16K x 14 words) of Flash program memory, 1KB RAM and 256B EEPROM in a 44-pin TQFP (10x10) package. It operates from a 1.8V to 3.6V supply (F-version variants cover 1.8-5.5V), runs at up to 32MHz internal clock, and offers 36 digital I/O pins plus an integrated LCD driver, making it a single-chip solution for human-machine-interface designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, peripheral set and I/O. Within the broader taxonomy, an 8-bit MCU is the entry-level tier optimized for low cost, deterministic real-time response and ultra-low standby power. The PIC16LF1939 sits in Microchip's XLP (eXtreme Low Power) nanoWatt family, whose peers include the PIC16F193x/194x line-up; these parts target battery-powered and always-on applications where a few microamps of sleep current dominate battery life calculations. Key features include a 32MHz internal oscillator with 4x PLL option, 14-channel 10-bit ADC, multiple Enhanced USART, MSSP (SPI/I²C) ports, 5 CCP/ECCP modules, two comparators, an 8-bit/5-bit DAC and hardware mTouch capacitive sensing support. The integrated LCD controller can drive up to 184 segments directly, eliminating the need for an external display driver IC in meter, appliance and industrial-control panels. The LF variant's nanoWatt XLP technology delivers typical sleep currents below 50 nA with RTC active and watch-dog timer off, plus a 1.8V minimum VDD that lets designers run directly from a single alkaline or two AA cells without a boost regulator. The wide operating range (industrial -40°C to +85°C for the I-suffix) and broad peripheral integration lower BOM cost by replacing external ADC, RTC and LCD-driver chips. Typical applications include battery-powered utility meters, white-goods user interfaces, home appliances with segment LCDs, sensor hubs with mTouch buttons, industrial control keypads, and low-end IoT edge nodes with UART/SPI peripherals. The integrated ADC plus DAC plus comparator set also makes the part a useful analogue front-end for thermostat loops and process-control sub-systems. When designing, plan the VDD decoupling network with a 100nF ceramic close to each power pin plus a bulk 10µF tantalum or ceramic; route the ICPGC/ICSPC ICSP™ clock and data lines with short, parallel traces to a 6-pin header to retain in-circuit debug and device programming access on the production board. This page synthesises distributor pricing tiers, AEO-optimised answers to common engineering questions, and a curated list of pin-compatible drop-in alternatives that go beyond the bare datasheet lookup. Where distributor data disagrees on a value, the manufacturer's datasheet is cited as the authoritative source.

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PIC16LF1939T-I/ML - 28KB Flash 8-bit MCU, 44-QFN | Microchip
PIC16LF1939T-I/ML

PIC16LF1939T-I/ML - 28KB Flash 8-bit MCU, 44-QFN | Microchip

The Microchip Technology PIC16LF1939T-I/ML is an 8-bit PIC microcontroller from the PIC® XLP™ 16F family, featuring 28 KB (16K x 14) of Flash program memory, 1 KB of RAM, and 256 bytes of EEPROM in a 44-pin QFN (8x8 mm) package with exposed thermal pad. It operates up to 32 MHz from a 1.8 V to 5.5 V supply and provides 36 I/O pins with a 10-bit ADC, making it suitable for low-power and battery-driven embedded designs. A PIC microcontroller is a compact, programmable computing core built around a Harvard RISC architecture that integrates flash memory, RAM, EEPROM, peripherals, and I/O into a single chip. PIC16F-series MCUs sit in the low-end 8-bit tier of the PIC family tree (PIC10/12/16/18/24/32), balancing code density, peripheral integration, and extreme-low-power (XLP) operation, and are commonly used where cost, deterministic timing, and small footprint matter more than raw throughput. Key features include nanoWatt XLP technology for sub-µA sleep currents, an on-chip 32 kHz oscillator, internal voltage reference, capacitive touch support via the mTouch® peripheral, and up to 36 general-purpose I/O. The device also integrates a Liquid Crystal Display (LCD) driver, multiple timers, enhanced USART, MSSP for SPI/I2C, and 10-bit ADC with up to 14 channels depending on package. The PIC16LF1939T-I/ML targets designs that need LCD-driving capability in a compact 44-QFN footprint, such as thermostats, metering, consumer appliances, and human-machine interface panels. Its XLP nanoWatt technology enables battery lifetimes of years on a single cell when the MCU spends most of its time in sleep or doze modes. When designing, ensure the exposed pad of the QFN package is soldered to a sufficiently large copper pour for thermal dissipation and electrical grounding; an unsoldered thermal pad degrades thermal performance and can cause intermittent failures. The 'T' suffix indicates Tape-and-Reel packaging for high-volume SMT assembly.

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PIC16LF1939T-I/PT - 28KB Flash XLP 8-bit MCU 44-TQFP | Microchip
PIC16LF1939T-I/PT

PIC16LF1939T-I/PT - 28KB Flash XLP 8-bit MCU 44-TQFP | Microchip

The Microchip PIC16LF1939T-I/PT is an 8-bit PIC16 microcontroller from the eXtreme Low Power (XLP) family, featuring 28KB (16K x 14 words) of Flash program memory, 1KB of RAM, and 256 bytes of EEPROM, all integrated into a 44-pin TQFP (10x10 mm) package. It runs at up to 32 MHz, supports 1.8V to 5.5V wide operating voltage, and delivers 36 I/O pins with a 10-bit ADC and multiple on-chip peripherals for embedded applications. What is a microcontroller (MCU)? A microcontroller is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), non-volatile storage (EEPROM), and a rich set of peripherals such as timers, ADC/DAC, communication interfaces (UART, SPI, I2C), and GPIO onto one die. The PIC16LF1939 belongs to the PIC16 family of 8-bit microcontrollers, which sit within Microchip's 8-bit MCU portfolio alongside PIC10/12/14/18 families, and ultimately within the broader microcontroller -> embedded IC -> semiconductor hierarchy. The XLP designation indicates an ultra-low-power architecture optimized for battery-powered and energy-harvesting designs. Key features include up to 32 MHz internal oscillator, 10-bit ADC with multiple channels, hardware capacitive touch sensing (mTouch) via the on-chip Charge Time Measurement Unit (CTMU), multiple Enhanced Universal Synchronous/Asynchronous Receiver/Transmitters (EUSART), SPI, and I2C interfaces. The wide 1.8V-5.5V operating range allows direct connection to single-cell Li-ion or two-cell AA battery stacks without external level shifters. The PIC16LF1939 uses Microchip's enhanced mid-range 8-bit RISC core with a 14-bit instruction word, providing deterministic interrupt latency and single-cycle hardware multiply support in the instruction set. The integrated nanoWatt XLP technology delivers sleep currents in the sub-1uA range, enabling years of operation on a single coin cell. On-chip peripherals include 5 CCP/ECCP modules, comparators, and a configurable logic cell (CLC) for custom digital glue logic. Typical applications include low-power IoT sensor nodes, battery-powered consumer electronics, capacitive touch user interfaces (keypads, sliders, proximity sensors), home appliances, automotive body electronics (non-safety), industrial control panels, and USB/HID human interface devices when paired with an external USB transceiver. The combination of high Flash density, generous I/O count, and XLP power profile also makes it a strong fit for wearable medical monitoring and portable instrumentation. Design tip: Always place a 0.1uF decoupling capacitor as close as possible to each VDD pin, with a bulk 10uF capacitor on the main supply rail. For capacitive touch applications, follow Microchip's mTouch PCB layout guidelines for sensor electrode sizing, ground flooding, and guard-ring placement to maximize touch sensitivity and noise immunity. This page synthesizes distributor pricing, drop-in alternatives from the same PIC16LF1939 family, application-specific design guidance, and parametric comparisons not aggregated in the manufacturer datasheet alone.

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PIC16LF1946-E/MR - 14KB Flash LCD MCU, 32MHz, QFN-64 | Microchip
PIC16LF1946-E/MR

PIC16LF1946-E/MR - 14KB Flash LCD MCU, 32MHz, QFN-64 | Microchip

The Microchip Technology PIC16LF1946-E/MR is a 64-pin, 8-bit Flash-based CMOS microcontroller with an integrated LCD driver and nanoWatt XLP (eXtreme Low Power) technology, housed in a 9x9 mm QFN-64-EP (HVQCCN) package. It operates from a 1.8V to 3.6V supply, delivers 32 MHz maximum CPU performance through a high-performance RISC architecture, and integrates 14 KB of Flash program memory, 512 bytes of RAM, and 256 bytes of EEPROM. The part supports industrial-grade -40C to +125C operation (E temperature grade) and includes an on-chip LCD driver capable of driving up to 192 segments. What is a PIC microcontroller? A PIC microcontroller (Programmable Intelligent Computer) is a family of 8/16/32-bit RISC-based microcontrollers from Microchip Technology used in embedded systems. Within the broader taxonomy, PIC16LF1946 belongs to: microcontroller -> 8-bit MCU -> PIC16 family -> PIC16F/LF194x sub-family with LCD driver and XLP low-power peripherals. PIC MCUs are widely deployed in industrial control, consumer appliances, automotive body electronics, and battery-powered IoT edge nodes because they combine deterministic RISC execution, low sleep current, and rich on-chip peripherals (ADC, PWM, I2C, SPI, USART, LCD driver). Key features of the PIC16LF1946 include nanoWatt XLP sleep currents in the nanoampere range, multiple low-power operating modes (Sleep, Idle, Doze, alternate clock sources), an integrated segmented LCD driver with charge pump, multiple 10-bit ADC modules, two PWM peripherals, two comparators, and a 32 kHz internal oscillator for low-power timekeeping. The 64-pin QFN-EP package exposes a large thermal pad for heat dissipation and supports a wide peripheral pinout including 36+ I/O lines for application flexibility. Architecturally, the PIC16LF1946 uses a Harvard RISC core with single-cycle instruction execution at the system clock, a 14-bit instruction word, and 8-bit data path. The integrated LCD driver is one of its defining features, supporting static, 1/2, 1/3, and 1/4 bias multiplexed displays with up to 192 segments, eliminating the need for an external LCD controller. The EEPROM emulation in Flash and configurable oscillator options (HFINTOSC, LFINTOSC, external crystal) provide flexibility for energy-constrained designs. Typical applications include battery-powered thermostats, programmable timers, smart sensors with LCD readouts, portable medical devices with segment LCDs, white goods / home appliance user interfaces, instrument cluster displays, metering equipment, and any cost-sensitive embedded product requiring a graphical segment LCD without an external controller. Design consideration: When migrating from a larger PIC16 with external LCD driver to the PIC16LF1946, validate that your segment count, bias, and charge-pump voltage requirements fall within the on-chip LCD driver's maximum specifications; the QFN-64-EP package requires PCB thermal pad soldering per IPC-7093 for reliable thermal performance. This page synthesizes distributor pricing from LCSC, DigiKey, Mouser, and Octopart, drop-in alternatives from the same PIC16LF194x family, and practical design notes not found in the manufacturer datasheet alone.

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PIC16LF1946-E/PT - 8-Bit 32MHz XLP MCU 14KB Flash | Microchip
PIC16LF1946-E/PT

PIC16LF1946-E/PT - 8-Bit 32MHz XLP MCU 14KB Flash | Microchip

The Microchip Technology PIC16LF1946-E/PT is a PIC16F-series 8-bit RISC microcontroller featuring a 32MHz core, 14KB (8K x 14) of Flash program memory, 512 bytes of SRAM, and 256 bytes of EEPROM, housed in a 64-pin TQFP (10x10 mm) surface-mount package. The 'LF' designation and 'XLP' (eXtreme Low Power) nanoWatt technology enable operation across a 2.3V to 3.6V supply range with sub-microamp sleep currents suitable for battery-powered applications. An 8-bit microcontroller is a compact, single-chip processor that integrates a CPU, RAM, non-volatile program memory, and peripherals onto a single silicon die. It belongs to the broader microcontroller (MCU) family within embedded processing, itself a sub-category of microcomputer ICs in the integrated circuit hierarchy (microcontroller -> microprocessor -> semiconductor -> IC). 8-bit MCUs like the PIC16F-series are widely deployed where deterministic timing, low cost, and low power outweigh the throughput demands of 32-bit cores. Key features of the PIC16LF1946-E/PT include 36 general-purpose I/O pins, an integrated LCD driver with charge pump capable of driving segment displays up to 192 segments, a 10-bit ADC with up to 17 channels, multiple Enhanced USART, SPI, and I2C peripherals, and four 8-bit timers plus a 16-bit timer. The device supports Core Independent Peripherals (CIPs) that offload tasks from the CPU, freeing it for application logic. The architecture is built on a modified Harvard RISC design with a 14-bit instruction word, allowing most instructions to execute in a single cycle. With XLP nanoWatt technology, sleep current drops to roughly 50 nA typical, and the integrated LCD driver operates while the CPU is in sleep — a critical capability for energy-harvesting and always-on display applications. The 64-pin TQFP package exposes extensive I/O, including dedicated pins for the LCD segment drive and analog channels. Typical applications include industrial control panels with integrated LCD displays, low-cost consumer appliances, smart metering and energy monitors, medical handheld devices, and battery-backed sensors with segment-LCD readouts. The integrated LCD driver eliminates the need for an external display controller, reducing BOM cost and PCB footprint in HMI designs. When designing with this MCU, ensure the VDD/VSS pins have adequate decoupling (100nF ceramic + 10uF bulk) and respect the maximum clock rate derating curves above 3.0V. Programming via ICSP requires the standard Microchip ICD/REAL ICE toolchain — code protection should be configured in the configuration word before deployment. This page synthesizes distributor pricing, drop-in alternatives within the PIC16LF193x/194x/190x families, and practical design notes that go beyond the manufacturer datasheet's introductory chapters.

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