Microcontroladores

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PIC18F27Q83-I/SP - 8-bit 64MHz MCU, 128KB Flash, CAN, 28-SPDIP | Microchip
PIC18F27Q83-I/SP

PIC18F27Q83-I/SP - 8-bit 64MHz MCU, 128KB Flash, CAN, 28-SPDIP | Microchip

The Microchip Technology PIC18F27Q83-I/SP is an 8-bit PIC microcontroller running up to 64 MHz, integrating 128 KB of Flash program memory, 13 KB of SRAM, and 1 KB of data EEPROM in a 28-pin SPDIP (Skinny Plastic DIP) through-hole package. The part belongs to the PIC18-Q83 family and combines an extensive array of Core Independent Peripherals (CIPs) with an integrated CAN 2.0B controller, targeting cost-optimized industrial and automotive body/comfort applications. An 8-bit microcontroller is a microprocessor core with an 8-bit data path, on-chip program memory, RAM, and integrated peripherals optimized for embedded control. Within the broader taxonomy, the PIC18 family sits above baseline PIC10/12/16 and below the PIC24/dsPIC33 16-bit cores, while still employing a 16-bit modified Harvard instruction set that delivers high code density and deterministic interrupt latency for real-time control. The PIC18-Q83 family is one of Microchip's CIP-rich platforms where many peripherals (timers, PWM, ADC, communications, custom logic) can operate without CPU intervention, freeing the core for application logic. Key features include a 12-bit differential ADC with up to 17 channels, a 5-bit DAC, multiple Zero-Cross Detect modules, configurable logic cells, Complementary Waveform Generator (CWG), three 16-bit Pulse-Width Modulation (PWM) outputs, Hardware Limit Timer (HLT), Windowed Watchdog Timer (WWDT), and an internal 64 MHz high-speed oscillator. The integrated CAN module supports CAN 2.0B active at bit rates up to 1 Mbit/s, making the part a strong fit for distributed industrial nodes. Typical applications include industrial sensor nodes, HVAC controllers, automotive body and climate modules, building automation gateways, low-cost CAN nodes, and battery-powered instrumentation where deterministic 8-bit control plus fieldbus connectivity is required. When designing with this part, place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pair and keep the ICSP/PGD/PGC traces short to preserve in-circuit debug stability. For CAN bus termination, add a 120 ohm resistor at each end of the bus, never at the node itself. This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC18-Q83 and PIC18-Q84 families, and practical design notes not found in the manufacturer datasheet alone, giving you a single decision-ready reference for sourcing PIC18F27Q83-I/SP.

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PIC18F27Q83T-I/5N - 64MHz 8-bit MCU 128KB Flash CAN/CIP 28-VQFN
PIC18F27Q83T-I/5N

PIC18F27Q83T-I/5N - 64MHz 8-bit MCU 128KB Flash CAN/CIP 28-VQFN

The Microchip PIC18F27Q83T-I/5N is an 8-bit PIC18 microcontroller (MCU) delivering 64 MHz CPU performance with 128 KB of Flash, 1 KB of EEPROM, and 13 KB (12.5 KB) of SRAM, housed in a 28-pin VQFN (6x6 mm) package supplied on tape-and-reel. The PIC18-Q83 family combines an extensive array of Core Independent Peripherals (CIPs) with on-chip CAN FD support, enabling deterministic, low-CPU-overhead automotive and industrial networking. An 8-bit PIC microcontroller is a Harvard-architecture RISC device whose program and data memories occupy separate buses, allowing simultaneous instruction fetch and operand access for deterministic real-time control. The PIC18 family is the high-pin-count, high-performance tier of Microchip's 8-bit portfolio, sitting above the PIC16 baseline and below the 16-bit dsPIC33 and PIC24 lines. Within power-management and embedded hierarchies, the MCU category itself spans 8-bit -> 16-bit -> 32-bit; the PIC18 line is the workhorse for cost-sensitive CAN-enabled nodes. Key features include 25 general-purpose I/O, a 12-bit ADC with Computation (ADCC) for automated averaging and threshold detection, 5-bit and 8-bit DACs, multiple Core Independent Peripherals (DSM, PWM, CWG, NCO, CRC, CLC), CAN FD, I2C/SPI, and UART. The -I suffix denotes the industrial temperature grade of -40C to +85C, and the wide 1.8 V to 5.5 V VDD range supports both single-cell Li-ion and 5 V regulated rails. An integrated voltage regulator simplifies single-rail designs and the Q83 family's CIPs offload signal conditioning, waveform generation, and communication from the CPU core. Typical applications include CAN-based automotive body and chassis ECUs (lighting, door modules, seat controllers), industrial sensor hubs with CAN connectivity, smart sensor nodes using the ADCC and CLC for hardware-only signal chains, low-cost motor-control peripherals using DSM/PWM, and battery-powered IoT edge devices. The combination of CAN FD + 128 KB Flash + 25 I/O targets sub-node ECUs that previously required an external transceiver plus a more expensive 32-bit MCU. When designing, allocate the VQFN exposed pad to a continuous ground plane with at least 8 thermal vias for the 6x6 mm footprint. Use Microchip's MPLAB X IDE with MCC (MPLAB Code Configurator) to graphically configure CIPs and CAN FD stacks; verify the latest errata document before locking the BOM, as the Q83 family is broadly active but peripheral-specific anomalies can affect CIP-based designs. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone, including pin-compatible variants within the PIC18-Q83 / Q43 / Q10 family for layout reuse.

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PIC18F27Q83T-I/SO - 8-Bit 64MHz 128KB Flash MCU w/ CAN | Microchip
PIC18F27Q83T-I/SO

PIC18F27Q83T-I/SO - 8-Bit 64MHz 128KB Flash MCU w/ CAN | Microchip

The Microchip Technology PIC18F27Q83T-I/SO is a 28-pin SOIC 8-bit PIC microcontroller from the PIC18-Q83 family, running at up to 64MHz and offering 128KB of Flash program memory alongside 13KB of SRAM and 1KB of EEPROM. It integrates a 12-bit ADC with computation (ADCC), a 5-bit/8-bit DAC, a 12-bit differential ADC option, four 16-bit timers, DSM, multiple PWM channels, and a hardware CAN module for robust in-vehicle or industrial networking. An 8-bit microcontroller (MCU) is a microprocessor that processes data in 8-bit-wide chunks and integrates Flash, RAM, EEPROM, peripherals, and interrupt logic on a single die. The PIC18 family uses an enhanced Harvard RISC architecture with a 16-bit instruction word and an 8-bit data path; it sits in the hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The PIC18-Q83 series targets applications where Core Independent Peripherals (CIPs) offload timing-critical tasks from the CPU, lowering power and code complexity. Key features include integrated CAN FD support, a 12-bit ADC with automatic averaging and threshold comparison, the Configurable Logic Cell (CLC) and Signal Measurement Timer (SMT) CIPs, and zero-cross detection. The device operates from 1.8V to 5.5V and offers nanopower technology with typical IDLE currents around 5 µA, allowing battery-friendly sleep modes. Typical applications include automotive body and sensor nodes, industrial control, building automation, sensor conditioning, and low-cost CAN node endpoints. The 28-SOIC package is footprint-compatible with legacy PIC18F2xK80 and PIC18F2xK42 designs, simplifying migration. When designing, ensure decoupling capacitors are placed within 3 mm of VDD/VSS, use proper CAN bus termination (120 Ω at each end), and follow the datasheet recommended trace geometry for the ADC analog inputs. The 'T' suffix indicates Tape & Reel packaging. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a faster path from selection to prototype.

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PIC18F27Q83T-I/SS - 8-Bit MCU 64MHz 128KB Flash CAN SSOP-28 | Microchip
PIC18F27Q83T-I/SS

PIC18F27Q83T-I/SS - 8-Bit MCU 64MHz 128KB Flash CAN SSOP-28 | Microchip

The Microchip Technology PIC18F27Q83T-I/SS is an 8-bit PIC18 microcontroller featuring 64 MHz CPU speed, 128 KB of Flash program memory, 13 KB of SRAM, and 1 KB of EEPROM, housed in a 28-pin SSOP package with integrated Controller Area Network (CAN) FD support. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O on one die. The PIC18 family belongs to the category of 8-bit RISC microcontrollers -> general-purpose MCUs -> embedded controllers -> semiconductor ICs. Microchip's PIC18-Q83 series combines a CIP (Core Independent Peripheral) ecosystem with CAN FD connectivity, allowing complex control and communication tasks to execute in hardware without CPU intervention, freeing the core for application logic. Key features include an integrated 12-bit ADC with Computation (ADCC), a 5-bit DAC, a DSM (Data Signal Modulator) for waveform generation, multiple PWM/CCP/CWG/HLT/WWDT peripherals, ZCD (Zero-Cross Detection), SCAN/CRC memory verification, Peripheral Pin Select (PPS) for flexible signal routing, and a 64 MHz internal oscillator. The 28-SSOP package supports industrial-grade operating temperatures from -40 °C to +85 °C. Architecturally, the PIC18F27Q83 employs an 8-bit RISC pipeline with a modified Harvard bus, 16-bit instructions, and a vectored interrupt controller. The Device Information Area (DIA) stores factory calibration, and the Device Configuration Area (DCA) provides one-time-programmable fuse options for code protection and oscillator selection. The CIPs are interconnected via Microchip's Fabric (a hardware routing fabric) so peripherals can trigger each other without waking the CPU. Typical applications include CAN-based automotive body and chassis ECUs, industrial sensor nodes with analog front ends, motor control with BLDC or stepper drives, LED lighting controllers, USB-to-CAN bridges, and IoT edge nodes requiring deterministic communication. The wide supply range (1.8 V to 5.5 V) supports both 3.3 V and 5 V system designs. When designing with this MCU, allocate careful attention to the PPS mapping - peripheral I/O can be reassigned to most digital pins, simplifying PCB layout but requiring a one-time configuration lock. Also, for CAN FD designs, ensure the CAN transceiver (such as MCP2562FD) matches the bus data rate and provides proper bus-side isolation. This page synthesizes distributor pricing, parametric alternatives, and practical design notes that are not consolidated on the manufacturer datasheet, providing engineers with a single reference for component selection, BOM risk analysis, and design validation.

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PIC18F27Q84-E/SO - 128KB Flash CAN-FD 8-bit MCU | Microchip
PIC18F27Q84-E/SO

PIC18F27Q84-E/SO - 128KB Flash CAN-FD 8-bit MCU | Microchip

The Microchip Technology PIC18F27Q84-E/SO is an 8-bit PIC18 RISC microcontroller with 128 KB Flash, 13 KB SRAM, 1 KB EEPROM, CAN FD, and a 64 MHz CPU, housed in a 28-pin SOIC package. This automotive- and industrial-targeted MCU integrates Core Independent Peripherals (CIPs) that offload tasks from the CPU and a CAN FD controller for modern in-vehicle networking. The device operates from 1.8 V to 5.5 V and supports the extended -40C to +125C temperature range, indicated by the -E suffix. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals. The PIC18 family belongs to Microchip's 8-bit MCU portfolio, which sits below 16-bit dsPIC and 32-bit Arm Cortex-M SAM devices in Microchip's embedded hierarchy. 8-bit MCUs remain the workhorse of cost-sensitive, deterministic, low-power embedded designs, including sensor nodes, body controllers, and appliance controls. The PIC18F27Q84 features 12-bit ADC with Computation (ADC2), 12-bit DAC, three op-amps, two comparators, Zero-Cross Detect (ZCD), DSM, multiple PWMs, UART, SPI, I2C, and CAN FD. These CIPs enable hardware-based signal conditioning, motor control loops, and protocol handling without CPU intervention. The Memory Access Partition (MAP) and Device Information Area (DIA) provide flexible bootloader and lifecycle support. The architecture pairs a RISC Harvard CPU with a 16-bit instruction word and an 8-bit data path, achieving up to 16 MIPS at 64 MHz. Internal PLL, configurable oscillator, and LFINTOSC modes support crystal-free designs. The CIP-driven architecture reduces firmware complexity and improves deterministic response to time-critical events like CAN bus arbitration. Typical applications include automotive body and comfort modules, industrial sensor hubs, BLDC and DC motor control, HVAC actuators, smart lighting, and small appliances. The combination of CAN FD, op-amps, and 12-bit ADC with computation is particularly well-suited to sensor-fusion front-ends and closed-loop motor control. Designers can pair the MCU with a CAN bus transceiver and a half-bridge gate driver for a complete node design. When designing with the PIC18F27Q84-E/SO, ensure 100 nF + 10 uF decoupling capacitors are placed within 3 mm of VDD pins, the MCLR pin uses a 10 kohm pull-up, and the ICSP programming pins are routed to an accessible header. The SOIC-28 footprint (3.9 mm body) is easy to hand-prototype but its 1.27 mm pitch requires careful layout for fine-line signal routing. The device is fully supported by MPLAB X IDE, MCC code configurator, and the XC8 compiler.

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PIC18F27Q84-E/SP - 8-Bit MCU, 128KB Flash, CAN-FD, 28-SPDIP
PIC18F27Q84-E/SP

PIC18F27Q84-E/SP - 8-Bit MCU, 128KB Flash, CAN-FD, 28-SPDIP

The Microchip Technology PIC18F27Q84-E/SP is an 8-bit PIC18 microcontroller featuring 128KB of Flash program memory, 13KB of SRAM, and 1KB of EEPROM, operating at up to 64MHz, packaged in a 28-pin SPDIP (Skinny Plastic Dual In-line Package). It integrates Controller Area Network with Flexible Data Rate (CAN FD) alongside Core Independent Peripherals (CIPs) including a 12-bit ADC with computation, a 5-bit/10-bit DAC, DSM (Data Signal Modulator), multiple PWM/CCP/CWG/HLT/CMP modules, I2C, SPI, and two UARTs. An 8-bit microcontroller is a microprocessor integrating CPU, RAM, non-volatile program memory, and peripherals on a single silicon die. The PIC18 architecture extends Microchip's 8-bit line with a RISC-style core, hardware multiply, and a rich CIP ecosystem. Within the broader hierarchy, a PIC18 MCU sits under: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor. The Q84 family specifically targets applications needing deterministic CAN FD communication combined with analog and timing peripherals, eliminating external components for many signal-chain and motor-control tasks. Key specifications include 64MHz operation, 128KB Flash (64K x 16 words), 13KB SRAM, 1KB EEPROM, 12-bit ADC with computation engine, 5-bit/10-bit DAC, 4x 16-bit timers, and an extended temperature grade of -40C to +125C (denoted by the `-E` suffix). Up to 36 digital I/O lines and 28 pins are provided in this SPDIP variant. The CIP block includes CWG (Complementary Waveform Generator), HLT (Hardware Limit Timer), CCP, and PWM with dead-band control for power-conversion and motor-drive topologies. Architecturally, the device uses an enhanced mid-range 8-bit core with a 16-bit instruction word and 8-bit data path. The CIPs offload tasks such as PWM fault handling, signal modulation, and analog threshold detection from the CPU, leaving it free for application logic. The CAN FD peripheral supports ISO 11898-1:2015 frames at data rates up to 5 Mbps, giving the MCU compatibility with modern automotive and industrial CAN networks where classical CAN's 1 Mbps ceiling becomes a bottleneck. Typical applications include automotive body and chassis modules using CAN FD, industrial sensor hubs, building-automation gateways, and low-end motor-control boards. The combination of CIPs and CAN FD also makes the part attractive for distributed I/O nodes and smart-sensor interfaces in factory automation. A key design consideration is the `-E` (Extended) temperature grade; the `-I` (Industrial) grade is also available for cost-sensitive designs operating within -40C to +85C. Ensure Vdd decoupling follows Microchip's recommended 100nF + bulk capacitors, and place the ICSP/ICD pins to allow in-circuit debug. This page consolidates distributor pricing, drop-in same-package alternatives, and practical design notes that complement the manufacturer datasheet, enabling faster part selection and second-source qualification.

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PIC18F27Q84-E/SS - 64MHz 8-bit MCU, 128KB Flash, CAN FD | Microchip
PIC18F27Q84-E/SS

PIC18F27Q84-E/SS - 64MHz 8-bit MCU, 128KB Flash, CAN FD | Microchip

The Microchip Technology PIC18F27Q84-E/SS is an 8-bit PIC18 microcontroller running at 64 MHz with 128 KB of Flash, 13 KB of SRAM, and 1 KB of EEPROM, housed in a 28-pin SSOP package. It integrates Controller Area Network with Flexible Data-rate (CAN FD), a 12-bit ADC3 with computation, a 5-bit DAC, a DSM (Data Signal Modulator), multiple PWM channels, and an extensive set of Core Independent Peripherals (CIPs) for automotive and industrial control. The -E suffix denotes the extended temperature grade of -40C to +125C. A PIC microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, EEPROM, and a rich set of on-chip peripherals such as timers, ADCs, communication controllers, and CIPs. The PIC18 family uses an enhanced 8-bit modified Harvard architecture with a 16-bit instruction word, offering higher code density and faster execution than baseline 8-bit cores. PIC18F parts sit in the hierarchy 8-bit PIC > PIC18 > PIC18-Q84 family > PIC18F27Q84 sub-family, positioning them as cost-optimized devices with CIP-driven offloading of CPU tasks. The 128 KB of program Flash, 13 KB SRAM, and 1 KB EEPROM enable mid-sized applications including CAN FD nodes, sensor fusion nodes, and motor-control loops. Up to 64 MHz operation delivers 16 MIPS, allowing deterministic real-time response. CAN FD support provides higher throughput and larger payloads than classic CAN, essential for modern vehicle networks. The ADC3 with Computation and Post-Processing (ADC2) automates filtering, threshold detection, and oversampling, freeing the CPU from interrupt-heavy scans. Typical applications include CAN FD body and chassis nodes, BLDC and stepper motor control, industrial sensor hubs, LED lighting controllers, and battery management for 12V/24V systems. The -E/SS wide-temperature 28-pin SSOP package suits compact modules where PCB real estate is tight. When designing with this MCU, place a 100 nF decoupling capacitor adjacent to every VDD/VSS pair, follow Microchip AN1799 for oscillator layout, and reserve the ICSP/ICD pins (PGC/PGD) for in-circuit programming and debugging.

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PIC18F27Q84-I/SP - 64MHz 8-bit MCU 128KB Flash CAN FD | Microchip
PIC18F27Q84-I/SP

PIC18F27Q84-I/SP - 64MHz 8-bit MCU 128KB Flash CAN FD | Microchip

The Microchip Technology PIC18F27Q84-I/SP is an 8-bit PIC18-Q84 family microcontroller with 64MHz CPU speed, 128KB Flash, 13KB RAM, and 1KB EEPROM, housed in a 28-pin SPDIP (Skinny Plastic Dual In-line Package) for through-hole assembly. The device combines CAN FD (Controller Area Network Flexible Data-Rate) communication with an extensive set of Core Independent Peripherals (CIPs), targeting automotive, industrial, and general embedded control applications. According to the manufacturer datasheet (DS40002213), it integrates a 12-bit ADC with Computation (ADC3), a DAC, DSM, multiple PWM/CCP/CWG/HLT modules, I2C, SPI, UART, and CAN FD. An 8-bit microcontroller (MCU) is a programmable processor whose internal data path is eight bits wide, optimized for cost-sensitive, deterministic, low-power embedded control. The PIC18 architecture extends baseline and mid-range 8-bit PIC cores with a RISC-like instruction set, hardware multiplier, and linear program/data memory, sitting hierarchically between simpler 16-bit PIC24 devices and full 32-bit ARM Cortex-M parts. The PIC18F27Q84 adds the Q84 family's signature CIPs - peripherals that operate without CPU intervention - reducing firmware complexity for time-critical tasks such as motor control, power conversion, and sensor conditioning. Key features include 64MHz internal oscillator (16 MIPS instruction throughput), 128KB self-programmable Flash with code protection, 13KB SRAM, 1KB EEPROM, 12-bit ADC3 (multiple channels with automated averaging and threshold comparison), 5-bit DAC, DSM (Data Signal Modulator) for generating IR or DTMF waveforms, up to four 16-bit CCP/PWM modules, CWG (Complementary Waveform Generator), HLT (Hardware Limit Timer), two I2C/SPI/UART, and one CAN FD port. The device operates from 3.0V to 5.5V and supports industrial -40C to +85C ambient temperatures. The PIC18F27Q84 is built on Microchip's enhanced 8-bit core with a 16-bit wide instruction fetch path that decodes into compact 16-bit opcodes. CIPs such as the 12-bit ADC3 can perform hardware averaging, oversampling, threshold detection, and automatic channel sequencing without waking the core from sleep, dramatically lowering average current in battery-powered sensor nodes. The integrated CAN FD peripheral supports bit rates up to 1 Mbps payload phase with up to 64-byte frames, enabling modern in-vehicle networks alongside legacy CAN 2.0B nodes. Typical applications include automotive body and chassis ECUs, CAN FD sensor nodes, industrial PLCs and motor drives, smart sensor hubs, IoT edge controllers, and consumer appliances. The wide 3.0-5.5V supply range also supports 5V legacy designs where many modern MCUs are 3.3V only. When designing with this part, ensure the ICSP programming pins (PGC/PGD) are accessible and that the CAN FD transceiver is properly terminated with 120 ohms at the bus ends.

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PIC18F27Q84T-I/5N - CAN-FD MCU 128KB Flash 28-VQFN
PIC18F27Q84T-I/5N

PIC18F27Q84T-I/5N - CAN-FD MCU 128KB Flash 28-VQFN

The Microchip Technology PIC18F27Q84T-I/5N is an 8-bit PIC18 microcontroller IC featuring 128KB Flash, 13KB SRAM, 1KB EEPROM, and a 64MHz maximum CPU clock, housed in a 28-pin VQFN (6x6 mm) package with an exposed thermal pad. The device integrates a 12-bit ADC with computation, a 5-bit/10-bit DAC, multiple DSM/PWM channels, and a rich set of Core Independent Peripherals (CIPs) tailored for real-time control. An 8-bit microcontroller (MCU) is a compact computing core that combines a CPU, Flash program memory, SRAM, EEPROM and multiple peripheral blocks on a single silicon die. The PIC18 family extends this with a RISC-modified Harvard architecture that delivers deterministic instruction execution at 64 MHz, while the Q84 sub-family layers in CIPs that handle PWM, ADC, communications, and timing without CPU intervention. Key differentiating features include integrated CAN-FD (Controller Area Network Flexible Data Rate) for automotive and industrial networking at up to 8 Mbps, Hardware Custom Logic (HLT) configurable via CWG for zero-latency waveform generation, and Math Accelerator/32-bit accumulators in the ADC for offloading DSP-style signal processing. The on-chip Zero-Cross Detection (ZCD) and PPS (Peripheral Pin Select) simplify sensor interfaces and PCB routing in cost-sensitive designs. Architecturally, the device uses Microchip's XLP (eXtreme Low Power) technology with IDLE/DOZE/PMD power-management modes, plus Windowed Watchdog Timer (WWDT), SENT and CRC/SCAN for functional safety. The 28-VQFN-EP package exposes a thermal pad that ties directly to the ground plane, allowing the MCU to dissipate heat from the high-current I/O drivers. Typical applications include automotive body and HVAC control modules, industrial sensor hubs running CAN-FD, BLDC motor control via FOC algorithms using the DSM and CCP peripherals, IoT edge nodes, and consumer appliances with capacitive touch interfaces using the on-chip HLT and ADC. When designing with the PIC18F27Q84T-I/5N, ensure MCLR is tied through a 10 kohm pull-up, that VDD decoupling is 100 nF plus a bulk 1 uF within 5 mm of each rail pin, and that the exposed pad is soldered to a continuous ground copper pour for thermal performance.

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PIC18F4220-E/ML - 4KB Flash 8-bit MCU, 36 I/O, 44-QFN | Microchip
PIC18F4220-E/ML

PIC18F4220-E/ML - 4KB Flash 8-bit MCU, 36 I/O, 44-QFN | Microchip

The Microchip PIC18F4220-E/ML is a high-performance 8-bit CMOS Flash microcontroller with 4 KB of program memory, 512 bytes of RAM, and 256 bytes of EEPROM, housed in a 44-pin VQFN package with exposed pad. It executes instructions at 10 MIPS (100 ns minimum instruction cycle) from an internal oscillator block and operates across the PIC18 enhanced architecture with 16-bit instructions and 8-bit data paths. An 8-bit Flash microcontroller is a single-chip computer that integrates a CPU core, non-volatile program memory, volatile data memory, and peripherals such as ADC, timers, and communication interfaces into one package. The PIC18F family sits in the middle of Microchip's 8-bit portfolio, above the PIC16 and below the PIC24/dsPIC, offering a balance of cost, peripheral integration, and code efficiency for embedded control. Within this hierarchy, the PIC18F4220 belongs to the PIC18F2220/2320/4220/4320 family of 28/40/44-pin devices. Key features of this part include 13 channels of 10-bit ADC, two analog comparators, two capture/compare/PWM modules, a USART with LIN support, an MSSP configurable as SPI or I2C, and nanoWatt technology for low-power operation. The internal oscillator reduces external component count, while self-programmability supports in-field firmware updates. The 36 available I/O pins make it suitable for human-interface and sensor-hub designs. The PIC18F4220 uses an enhanced Harvard architecture with a 16-bit instruction word and an 8-bit data path, plus hardware multiplier and 32 kHz secondary oscillator for real-time-clock applications. The -E temperature grade extends operation to -40 C to +125 C for industrial and harsh-environment use cases. Typical applications include industrial control panels, low-cost sensor nodes, home appliances, small white goods, automotive body modules (non-safety), and consumer electronics such as remote controls and battery chargers. The 4 KB Flash is well-matched to compact state-machine code for BLDC or stepper control via the PWM modules. When designing with this device, allocate decoupling capacitance on VDD/VSS pins and follow Microchip's recommended 44-pin QFN land pattern with thermal vias under the exposed pad. Designers migrating from older PIC16 designs benefit from upward code compatibility within the PIC18 instruction set, simplifying firmware reuse across product families. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, supporting faster component selection for engineers and buyers.

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PIC18F4220-E/P - 8-Bit 25MHz 4KB Flash MCU 40-PDIP | Microchip
PIC18F4220-E/P

PIC18F4220-E/P - 8-Bit 25MHz 4KB Flash MCU 40-PDIP | Microchip

The Microchip Technology PIC18F4220-E/P is a high-performance 8-bit CMOS Flash microcontroller based on the PIC18 architecture, featuring 25 MHz (10 MIPS) operation and packaged in a 40-pin PDIP (0.600 inch, 15.24 mm). The device includes 4 KB Flash program memory (2K x 16), 512 bytes of SRAM, and 256 bytes of EEPROM data memory, delivering a C compiler-friendly development environment with self-programming support. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, RAM, and configurable peripherals into one package. The PIC18 family belongs to Microchip's 8-bit RISC microcontroller hierarchy - an 8-bit MCU -> PIC microcontroller -> PIC18 family -> Flash-based microcontroller -> embedded controller. Within this hierarchy the PIC18F4220 sits in the mid-range tier, balancing program memory, peripheral count, and I/O count for embedded control tasks. The 'E' suffix indicates the Extended industrial temperature grade of -40C to +125C, while the 'P' suffix designates the PDIP-40 package. Key features of this part include 36 digital I/O pins, 13 channels of 10-bit Analog-to-Digital converter (ADC), 2 analog comparators, 2 Capture/Compare/PWM (CCP) modules, a 10-bit enhanced PWM, a synchronous serial port configurable as SPI or I2C, two 8-bit timers plus one 16-bit timer, a parallel slave port, and an internal oscillator. The instruction set offers only 77 single-word instructions and is upward compatible with PIC16C5X, PIC12CXXX, PIC16CXX and PIC17CXX devices, easing software migration from older Microchip parts. Typical applications include industrial control, sensor interface, low-power remote controls, appliance controllers, and small embedded data-acquisition nodes. The 10 MIPS performance, broad peripheral mix, and self-programming support make it a strong fit for legacy PIC18 designs and for new designs targeting the PIC18 ecosystem with MPLAB X and XC8 toolchain compatibility. When designing with this device, place decoupling capacitors as close as possible to the VDD/VSS pins and follow Microchip's MPLAB ICD in-circuit debugging guidelines. The Extended temperature grade (-40C to +125C) allows deployment in automotive, industrial, and outdoor environments without additional qualification. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on any single manufacturer or distributor page.

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PIC18F4220-I/ML - 8-Bit 40MHz MCU, 4KB Flash, 44-QFN | Microchip
PIC18F4220-I/ML

PIC18F4220-I/ML - 8-Bit 40MHz MCU, 4KB Flash, 44-QFN | Microchip

The Microchip Technology PIC18F4220-I/ML is a high-performance 8-bit RISC microcontroller from the PIC18F family, featuring 4KB of Flash program memory organized as 2K x 16 words, 512 bytes of SRAM, and 256 bytes of EEPROM, packaged in a 44-pin QFN (8x8 mm) form factor with an exposed thermal pad. It executes instructions at up to 40 MHz, delivering approximately 10 MIPS throughput for compute-intensive embedded loops and is designed for industrial temperature operation from -40C to +85C. The device integrates 13 channels of 10-bit Analog-to-Digital conversion, two analog comparators, two Capture/Compare/PWM modules, and a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C, providing flexible peripheral integration in mixed-signal applications. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and programmable I/O peripherals into one package, allowing engineers to replace discrete logic and analog front-ends with deterministic firmware. Within the PIC18F family hierarchy (PIC18F -> 8-bit PIC -> Microchip 8-bit MCU -> microcontroller -> semiconductor), the PIC18F4220 sits in the mid-density "F4220/F4320" group targeted at cost-sensitive designs that still demand enhanced flash and 10-bit ADC integration. Microchip's nanoWatt technology platform provides active and sleep power management modes that reduce quiescent current to microamp levels, making the PIC18F4220-I/ML attractive for line-powered industrial and battery-tolerant sensor interface boards where MCU run-time directly affects system energy budget. Key feature highlights include 36 programmable digital I/O lines supporting TTL/CMOS inputs and selectable pull-ups, an enhanced flash memory cell rated for at least 100,000 erase/write cycles, and on-chip self-programming support that enables in-application firmware updates without external programmers. The 10-bit ADC delivers a typical conversion time adequate for sub-1 ksps multi-channel scanning, and the dual analog comparators can be configured with an internal reference for autonomous threshold detection without CPU intervention. The MSSP peripheral simplifies integration of SPI/I2C sensors, while the two CCP modules support PWM motor control, IR carrier generation, or capture-based timing measurement. An ICD-friendly architecture is exposed for MPLAB ICD development tools, removing the need for a separate debug header in prototypes. Architecturally, the PIC18F4220 uses a Harvard RISC core with separate 16-bit instruction and 8-bit data paths, paired with a deterministic instruction pipeline that supports single-cycle 8x8 hardware multiply. The C compiler-friendly instruction set and orthogonal addressing model allow compact code generation, and the device supports MPLAB C18/XC8 development with optimized library footprints for ADC, PWM, and MSSP routines. Power management is handled by selectable oscillator modes (internal RC plus external crystal/HS) and deep sleep states with peripheral-disable registers. Typical applications include sensor and transducer signal conditioning, industrial control panels, low-cost motor drives (small DC fans, steppers, solenoids), home appliance user interfaces, automotive body controllers (non-AEC-Q100), and battery-charging front-ends. Designers appreciate the wide operating voltage and robust peripheral mix as a foundation for migrating older PIC16 designs to a higher-performance 8-bit platform without retraining on a new toolchain. When integrating the PIC18F4220-I/ML, allocate at least 1 square inch of PCB copper directly under the QFN exposed pad to keep junction temperature within the -40C to +125C operating envelope at full CPU utilization; this is a power-supplied connector-like role where thermal and decoupling discipline determines system stability. This page consolidates distributor pricing, drop-in alternatives, and applied engineering guidance beyond what the manufacturer datasheet alone provides.

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PIC18F4220-I/P - 8-Bit 40MHz 4KB Flash MCU 40-PDIP | Microchip
PIC18F4220-I/P

PIC18F4220-I/P - 8-Bit 40MHz 4KB Flash MCU 40-PDIP | Microchip

The Microchip Technology PIC18F4220-I/P is a high-performance 8-bit CMOS Flash microcontroller in a 40-pin PDIP package, executing 10 MIPS at 40 MHz with a 4 KB (2K x 16) Flash program memory, 512 bytes of RAM, and 256 bytes of EEPROM. It integrates 36 digital I/O lines, a 10-bit ADC with up to 13 channels, and three power-managed nanoWatt modes for low-power applications. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, RAM, and peripherals. The PIC18F family sits within the broader hierarchy of microcontrollers -> 8-bit microcontrollers -> PIC18 architecture -> CMOS Flash microcontrollers. PIC18F devices are upward compatible with PIC16C5X, PIC12CXXX, PIC16CXX, and PIC17CXX families, providing a seamless migration path for existing code bases while adding higher performance and richer peripherals. Key features of the PIC18F4220-I/P include 10 MIPS throughput (100 ns instruction cycle), 77 single-word instructions, 16-bit instructions with 8-bit data path, hardware multiply, two 8-bit timers plus three 16-bit timers, two capture/compare/PWM modules, an Enhanced USART, MSSP supporting SPI and I2C, two analog comparators, a 10-bit ADC with 13 channels, and a programmable low-voltage detection circuit. The I-grade parts operate over the industrial temperature range of -40C to +85C. The device uses a modified Harvard architecture with separate program and data buses, and its nanoWatt technology provides six software-controlled power-managed modes that reduce quiescent current to under 1 uA in sleep, dramatically extending battery life in portable applications. Brown-out Reset, Power-on Reset, and a Watchdog Timer with its own on-chip RC oscillator ensure robust operation in noisy industrial environments. Typical applications include industrial control and automation, sensor interface nodes, small appliances and white goods, HVAC controllers, automotive body electronics, low-cost data acquisition modules, and battery-powered handheld instruments. The 36 I/O count and rich peripheral mix suit designs that require multiple communication interfaces plus analog sensing without an external ADC. When designing with the PIC18F4220-I/P, ensure the ICSP programming interface is accessible (PGC/PGD on RB6/RB7) and that decoupling is placed close to VDD/VSS pins. Developers should select an MPLAB X IDE-compatible toolchain and use the PIC18 instruction set extensions for hardware multiply and table reads when porting legacy PIC16 code. This page consolidates distributor pricing, drop-in pin-compatible alternatives within the PIC18F4xxx family, and practical design notes not found in the bare datasheet, enabling faster sourcing decisions for engineers.

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PIC18F4220T-I/ML - 4KB Flash 8-bit MCU, 44-pin QFN | Microchip
PIC18F4220T-I/ML

PIC18F4220T-I/ML - 4KB Flash 8-bit MCU, 44-pin QFN | Microchip

The Microchip PIC18F4220T-I/ML is a high-performance, enhanced Flash 8-bit microcontroller (MCU) delivering 10 MIPS throughput with 4 KB of Flash program memory and 512 bytes of RAM, housed in a 44-pin QFN (ML) package. It operates from 4.2V to 5.5V and provides 36 digital I/O pins, thirteen 10-bit ADC channels, nanoWatt power management, and an internal 8 MHz oscillator plus PLL options up to 40 MHz. What is a PIC18F microcontroller? The PIC18F is Microchip's 8-bit PIC microcontroller family using an enhanced Harvard architecture with 16-bit instructions and 8-bit data path, optimized for C-compilable embedded designs. PIC18F sits in the hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. These MCUs integrate Flash, RAM, EEPROM, ADC, PWM, and communication peripherals in a single chip, balancing code density, deterministic timing, and low power consumption. Key features include 10 MIPS CPU performance at 40 MHz, 4 KB self-programmable Flash with EEPROM emulation, 512 bytes SRAM, 256 bytes EEPROM, an enhanced USART, MSSP (SPI/I2C), two 8-bit timers plus three 16-bit timers, two PWM modules, and nanoWatt technology for low-power idle/sleep modes with sub-microamp standby current. The PIC18F4220 uses an enhanced Harvard RISC core (77 single-word instructions) with hardware multiplier, 16-bit instructions, and a 32-level hardware stack. The 40 MHz oscillator (10 MIPS) supports industrial 5V designs with analog-rich sensor interfaces. The 10-bit ADC includes acquisition timing and auto-conversion for precise temperature, voltage, and transducer measurements. Typical applications include industrial control, HVAC sensors, white goods, motor control, lighting control, sensor conditioning, smart energy meters, USB/audio accessories, and human-machine interface panels. The wide I/O count and ADC channels fit multi-signal acquisition boards. When designing with this part, ensure PCB layout exposes the QFN thermal/exposed pad to a copper pour for ground and thermal relief, since QFN packages rely on the die-attach paddle. Verify VIH/VIL thresholds match 5V logic and add 0.1 uF + 10 uF decoupling near the VDD pins. This page synthesizes verified distributor availability, drop-in alternatives, and application guidance that goes beyond the manufacturer datasheet alone.

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PIC18F4220T-I/PT - 40MHz 8-bit MCU 4KB Flash 36 I/O TQFP-44 | Microchip
PIC18F4220T-I/PT

PIC18F4220T-I/PT - 40MHz 8-bit MCU 4KB Flash 36 I/O TQFP-44 | Microchip

The Microchip Technology PIC18F4220T-I/PT is an 8-bit high-performance enhanced Flash microcontroller from the PIC18 family, offering 40 MHz maximum clock speed, 4 KB (2K x 16) of Flash program memory and 512 bytes of RAM, housed in a 44-pin TQFP (PT) surface-mount package supplied on Tape & Reel. It integrates a 10-bit A/D converter with up to 13 input channels, nanoWatt power management for low-power operation, and 36 digital I/O pins. An 8-bit microcontroller (MCU) is a programmable computing-on-a-chip that combines a CPU, memory, peripherals and I/O on a single silicon die; the PIC18 family is Microchip's high-performance 8-bit line with a 16-bit instruction word and an enhanced instruction set including hardware multiply. Within the broader taxonomy, this part sits as: PIC18F4220 -> PIC18 family -> PIC microcontroller -> 8-bit MCU -> microcontroller -> integrated circuit -> semiconductor. It targets the intersection of deterministic real-time control and low power, complementing 16-bit dsPIC and 32-bit ARM Cortex-M parts in Microchip's catalog. Key features include 4 KB Flash with self-programmability, 256 bytes of EEPROM data memory, an enhanced USART, MSSP (SPI/I2C) and a 10-bit ADC with up to 13 channels. The nanoWatt technology reduces active current to under 1 mA in sleep modes, making it well suited to battery-aware designs. It also offers in-circuit debugging via ICD and in-circuit serial programming (ICSP) for field-upgradable firmware. Architecturally, the PIC18F4220T-I/PT uses a Harvard bus with separate instruction and data paths, a 16-bit instruction word and 8-bit data path. It supports 75 instructions, a hardware 8x8 multiply, and prioritized interrupt handling. The 40 MHz oscillator drives a 4-clock-per-instruction pipeline that yields 10 MIPS throughput, adequate for closed-loop motor control, sensor fusion and human-interface glue logic. Typical applications include industrial control panels, HVAC thermostats, low-cost sensor nodes, automotive body modules (non-safety), appliance user interfaces and battery-powered instrumentation. In each case, the 44-pin TQFP footprint gives ample I/O for keypads, displays and analog front ends without forcing a multilayer PCB. Design considerations: at 40 MHz the core draws roughly 10 mA active, so thermal management is rarely critical, but decoupling (100 nF plus 10 uF bulk) must be placed within 5 mm of the supply pins. The 'T' suffix denotes Tape & Reel packaging; use the non-T variant (PIC18F4220-I/PT) for tube/tray orders. The '-I' indicates the industrial -40C to +85C temperature range suitable for non-automotive deployments.

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PIC18F4221-E/ML - 8-bit MCU, 4KB Flash, 40MHz, 44-QFN | Microchip
PIC18F4221-E/ML

PIC18F4221-E/ML - 8-bit MCU, 4KB Flash, 40MHz, 44-QFN | Microchip

The Microchip PIC18F4221-E/ML is an 8-bit PIC microcontroller built on a RISC architecture, offering 4 KB of Flash program memory, 512 bytes of SRAM, and 256 bytes of EEPROM in a 44-pin VQFN (ML) package with exposed pad. It runs up to 40 MHz (10 MIPS), supports an extended industrial supply range of 4.2V to 5.5V, and exposes up to 36 I/O pins. The part integrates 13 channels of 10-bit A/D conversion, two analog comparators, two CCP (Capture/Compare/PWM) modules, an MSSP configurable for SPI or I2C, an EUSART, and nanoWatt power-management technology. The "E" suffix denotes the extended temperature grade (-40C to +125C), making this device suitable for harsh industrial environments. Background — What is an 8-bit PIC microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripherals such as ADC, timers, and communication blocks. The PIC18 family sits in the mid-range tier of Microchip's PIC portfolio, between the baseline PIC10/12/16 families and the high-performance PIC24/dsPIC families. PIC18 cores use a Harvard-style RISC design with 16-bit instructions and an 8-bit data path, balancing code density, deterministic timing, and C-compiler friendliness. MCUs like the PIC18F4221 typically serve as the supervisory brain in embedded systems, offloading housekeeping tasks from a host processor or running standalone in cost-sensitive designs. Key features that distinguish this device include the nanoWatt power-management suite (which provides multiple idle and sleep modes with current as low as [DATA_NEEDED] nA typical), self-programmability that enables in-field firmware updates without external programmers, an ICD (In-Circuit Debugger) interface, and a wide peripheral mix that targets both sensor-interface and human-interface applications. The 256-byte EEPROM block adds wear-leveled non-volatile storage for parameters that must survive power cycles. Programmable pull-ups, interrupt-on-change, and ultra-low-power wake-up sources simplify matrix-key and remote-control designs. Architecturally, the PIC18F4221 uses an 8-bit data bus with a 16-bit instruction word and a hardware multiplier (8x8 in one cycle). The Flash memory supports table reads/writes and run-time self-programming via ICSP, and the device includes a 31-level hardware stack. The 10-bit ADC supports 13 input channels with acquisition time programmable via ADCON registers. The MSSP peripheral supports both SPI master/slave and I2C master/slave modes with 7-bit or 10-bit addressing. The EUSART handles RS-232/RS-485 asynchronous communications and synchronous master/slave protocols. Typical applications include industrial control modules, sensor signal conditioning, low-cost motor and lighting controllers, USB-to-UART bridges (when paired with a USB transceiver IC), home appliances with user interfaces, and battery-powered instrumentation that benefits from the nanoWatt sleep modes. The 44-pin QFN package provides a compact footprint for space-constrained designs while still exposing most of the PIC18 family's peripherals. Design consideration: the 44-pin QFN's exposed thermal pad must be soldered to a ground pad on the PCB to meet the package's thermal and electrical performance; omitting the pad connection can degrade ADC accuracy and ESD robustness. When migrating firmware between PIC18F4221 variants (e.g., -I/ML industrial vs. -E/ML extended grade), verify that code-protection bits and oscillator configuration match the target application. This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers shorten sourcing and qualification cycles for the PIC18F4221-E/ML.

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PIC18F4221-E/P - 8-bit 4KB Flash MCU, 40MHz, DIP-40 | Microchip
PIC18F4221-E/P

PIC18F4221-E/P - 8-bit 4KB Flash MCU, 40MHz, DIP-40 | Microchip

The Microchip Technology PIC18F4221-E/P is an 8-bit PIC18-family CMOS flash microcontroller with 4KB program memory, 512 bytes SRAM and 256 bytes EEPROM, housed in a 40-pin PDIP (DIP-40) through-hole package. It executes instructions at up to 10 MIPS from a 40 MHz internal clock and is rated for the -40C to +125C extended automotive temperature range, as indicated by the -E/ suffix and the Automotive temperature grade. The wide 4.2 V to 5.5 V supply range supports both regulated 5 V rails and battery-powered systems with a small headroom diode. An 8-bit microcontroller is a single-chip computer built around an 8-bit data path, registers, and ALU. PIC18 microcontrollers use a RISC Harvard architecture with separate program and data buses, and the PIC18F family adds a 16-bit instruction word, hardware multiplier, and linear memory map optimized for C compilers. The PIC18F4221 sits in the '4x' family: 40-pin devices with nanoWatt power management, 10-bit ADC, and rich analog/peripheral integration for cost-sensitive embedded control. Key features include 36 digital I/O pins, 13 channels of 10-bit ADC, two analog comparators, two CCP (Capture/Compare/PWM) modules, an MSSP configurable as SPI or I2C, an enhanced USART with LIN support, and self-programming flash with ICSP (In-Circuit Serial Programming). Four Timer modules (Timer0 through Timer3) handle timing, capture and PWM generation. nanoWatt technology provides idle, sleep and ultra-low-power wake-on-interrupt modes that reduce Iq to microampere levels for battery-backed designs. Architecturally, the PIC18F4221 implements a 16-bit instruction set with an 8-bit data path, an 8x8 hardware multiplier, and a 31-level hardware stack. Internal RC oscillators plus PLL options free designs from external crystals; the ADC uses a successive-approximation core with acquisition timing controlled by the ADCON2 registers. Hardware peripherals are mapped to dedicated pins to keep firmware deterministic. Typical applications include automotive body and climate controls, industrial sensor interfaces, appliance control boards, low-cost instrumentation, and embedded learning platforms. The PIC18F4221 is also widely used as a teaching MCU because the DIP-40 package is breadboard-friendly. Engineers designing with this part should budget I/O carefully: 36 I/O pins are ample for human-interface or sensor boards but tight for large parallel displays. When designing with the PIC18F4221, place a 100 nF decoupling capacitor as close as possible to VDD/VSS pairs and consider a 10 uF bulk cap on the main rail. Unused I/O should be configured as outputs low to minimize SBDID current in sleep mode. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC18F4221-E/PT - 8-Bit 25MHz 4KB Flash MCU 44-TQFP | Microchip
PIC18F4221-E/PT

PIC18F4221-E/PT - 8-Bit 25MHz 4KB Flash MCU 44-TQFP | Microchip

The Microchip Technology PIC18F4221-E/PT is a high-performance 8-bit CMOS flash-based microcontroller from the PIC18F family, delivering up to 10 MIPS (25 MHz clock) in a 44-pin TQFP (10x10 mm) package with 36 digital I/O pins. The device integrates 4 KB program flash, 512 bytes SRAM, 256 bytes EEPROM, and 13 channels of 10-bit Analog-to-Digital (A/D) conversion for embedded mixed-signal designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and programmable I/O peripherals on one die. The PIC18 family extends Microchip's 8-bit baseline into an enhanced RISC instruction set with hardware multiplier, C-friendly architecture, and self-programming flash, occupying the mid-range tier above PIC16 and below PIC24/dsPIC in the Microchip performance hierarchy. Key features of the PIC18F4221-E/PT include two Capture/Compare/PWM (CCP) modules, two analog comparators, one synchronous serial port configurable as 3-wire SPI or 2-wire I2C, one USART with addressable addressing for multi-drop RS-485, nanoWatt Technology power management for low-power sleep modes, and ICD (In-Circuit Debug) support for tool-less development with MPLAB ICD. The 'E' temperature grade denotes the extended -40C to +125C operating range for industrial environments. The 44-TQFP package provides 36 bidirectional I/O pins, 13 of which share the 10-bit ADC input mux, allowing direct connection of analog sensors without external muxing. Power consumption is managed by nanoWatt Technology, with idle, sleep, and RTCC modes suitable for battery-backed applications drawing microamp-level standby current. Typical applications include industrial sensor conditioning front-ends, HVAC control panels, low-cost USB-to-UART bridges (via the MSSP/USART), small appliance controllers, and compact automotive body modules (where -40C to +125C is mandatory). The 10-bit ADC at 13 channels is sufficient for thermistor and potentiometer-based user interfaces. When designing with the PIC18F4221-E/PT, ensure the supply voltage stays within 4.2V to 5.5V and use 0.1 uF decoupling within 5 mm of each VDD/VSS pair, plus a 10 uF bulk cap on the board. Configure unused I/O as outputs to minimize current draw in nanoWatt sleep modes, and reserve one ICP/ICD-capable pair (typically RB6/RB7) for in-circuit programming.

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PIC18F4221-I/ML - 40MHz 8-bit MCU 4KB Flash 44-QFN | Microchip
PIC18F4221-I/ML

PIC18F4221-I/ML - 40MHz 8-bit MCU 4KB Flash 44-QFN | Microchip

The Microchip Technology PIC18F4221-I/ML is an 8-bit PIC18F-family microcontroller running up to 40 MHz with 4 KB (2K x 16) of enhanced Flash program memory, 512 bytes of SRAM, and 256 bytes of EEPROM, housed in a 44-pin QFN (8x8 mm) package with exposed thermal pad. The /ML suffix indicates the industrial temperature range (-40C to +85C) and the 44-QFN package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O on a single die. The PIC18F family sits in Microchip's 8-bit enhanced architecture tier, offering C compiler-friendly instruction set, hardware multiplier, linear program memory up to 2 MB, and the nanoWatt Technology power-management suite for low-power designs. Key features include thirteen 10-bit ADC channels, two analog comparators, two capture/compare/PWM modules, an MSSP configurable as SPI or I2C, an EUSART, 36 digital I/O lines, and self-programming support for in-application firmware upgrades. nanoWatt Technology provides multiple idle and sleep modes (Run, Idle, Sleep, RC_RUN, RC_IDLE) with fast wake-up, making the device suitable for battery-powered embedded products. The enhanced Harvard architecture delivers up to 10 MIPS at 40 MHz while maintaining deterministic interrupt latency. Internal oscillator options and wide operating voltage (4.2V-5.5V) eliminate external clock hardware in cost-sensitive designs, and the 10-bit ADC at up to 30 ksps supports sensor-conditioning and closed-loop control tasks. Typical applications include industrial sensor interfaces, appliance control panels, HVAC fan controllers, low-end consumer devices, USB-less embedded controls, and automotive body modules (under-the-hood parts require AEC-Q100 grade). The 36 I/O count and 10-bit ADC make it a balanced general-purpose MCU. When designing with this part, ensure 5V supply regulation within 4.2V-5.5V and provide adequate decoupling. The QFN-44 exposed pad must be soldered to the ground plane for thermal dissipation; failure to do so derates thermal performance significantly. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC18F4221-I/P - 8-bit 40MHz 4KB Flash MCU | Microchip DIP-40
PIC18F4221-I/P

PIC18F4221-I/P - 8-bit 40MHz 4KB Flash MCU | Microchip DIP-40

The Microchip Technology PIC18F4221-I/P is an 8-bit PIC18 family flash microcontroller with 40 MHz maximum clock speed, 4 KB (2K x 16) of program flash memory, 512 bytes of SRAM, and 256 bytes of EEPROM, housed in a 40-pin PDIP (DIP-40) through-hole package. According to the manufacturer datasheet, the device operates from 4.2 V to 5.5 V, delivers up to 16 MIPS throughput, and integrates 36 digital I/O pins, a 13-channel 10-bit ADC, two analog comparators, one 8-bit and one 16-bit timer, plus a master SSP configurable as SPI (3-wire) or I2C (2-wire). An 8-bit microcontroller (MCU) is a single-chip computer that uses an 8-bit data path and Harvard or modified-Harvard architecture optimized for deterministic, low-latency control of sensors, switches, and actuators. PIC microcontrollers belong to the broader category of microcontrollers (MCU) -> 8-bit MCU -> RISC MCU -> embedded controller -> semiconductor IC. They compete with AVR, 8051, and STM8 families and are widely used in cost-sensitive, low-power industrial and consumer designs where ease of programming (C compiler-friendly) and long product lifecycles matter most. The PIC18F4221-I/P features nanoWatt technology for power-managed sleep modes, an ICD (In-Circuit Debugger) interface, self-programmability for field firmware updates, and 256-byte data EEPROM for non-volatile parameter storage. Its enhanced flash memory supports read-while-write operation, and the C compiler-optimized instruction set (200 ns instruction cycle at 40 MHz) makes code generation straightforward for designers migrating from PIC16 or PIC17 platforms. The architecture combines a RISC CPU core with peripheral modules including two CCP (Capture/Compare/PWM) channels, a USART with addressable asynchronous mode, and an enhanced addressable synchronous serial port. Internal oscillator options and the nanoWatt power management block (Idle, Sleep, and Run modes with on-the-fly clock switching) enable battery-friendly operation in remote sensor nodes, while the 13-channel 10-bit ADC supports direct interface to analog front-ends. Typical applications include industrial control panels, sensor signal conditioning, low-end motor control (DC brushed and small steppers via CCP/PWM), home appliances, automotive body electronics (non-safety), HVAC thermostats, and consumer white goods. The wide 4.2-5.5V supply range and 40-pin PDIP package make the part especially popular in hobbyist, education, and legacy industrial platforms where through-hole soldering and breadboard prototyping remain standard. When designing with this part, reserve the MCLR/VPP pin for in-circuit serial programming (ICSP) and ensure decoupling capacitance of 0.1 uF plus 10 uF bulk is placed within 5 mm of VDD. For low-power designs, use the nanoWatt sleep modes and configure the ADC clock prescaler to avoid continuous conversion wake-ups. The 40-pin PDIP package simplifies prototyping but limits board density - migrate to the 44-pin TQFP (PIC18F4421-I/PT) or 44-pin QFN variants when production volume requires SMD assembly. This page synthesizes distributor pricing (DigiKey, Mouser, LCSC), pin-compatible drop-in alternatives from the same PIC18F family, and practical design notes not collected in any single manufacturer datasheet.

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PIC18F4221T-I/ML - 8-bit PIC MCU 4KB Flash 40MHz 44-QFN | Microchip
PIC18F4221T-I/ML

PIC18F4221T-I/ML - 8-bit PIC MCU 4KB Flash 40MHz 44-QFN | Microchip

The Microchip Technology PIC18F4221T-I/ML is an 8-bit CMOS Flash-based PIC microcontroller delivering 10 MIPS performance (40 MHz clock with 100 ns instruction execution) in a 44-pin QFN (8x8 mm) package. It integrates 4 KB (2K x 16) of Flash program memory, 512 bytes of RAM, and 256 bytes of EEPROM, supporting industrial-grade operation from -40C to +85C. An 8-bit microcontroller is a programmable system-on-a-chip that combines a CPU core, memory, and peripherals on a single silicon die. PIC microcontrollers (Programmable Intelligent Controllers) use a Harvard RISC architecture with only 77 single-word instructions, making them easy to program while delivering deterministic real-time performance. PIC18F family parts sit in the mid-range tier of the PIC portfolio, above baseline PIC16 and below PIC24/dsPIC, and are widely deployed in consumer, industrial, and automotive subsystems. Key features of the PIC18F4221 include 10 MIPS throughput, self-programmable Flash, an internal oscillator block, and a 10-bit ADC with up to 13 channels. It also supports multiple communication interfaces - I2C, SPI, and UART/USART - enabling easy integration with sensors, displays, and wireless modules. The integrated nanoWatt power management reduces quiescent current in sleep modes. The device uses Microchip's enhanced PIC18 architecture with a 16-bit wide instruction word and an 8-bit data path, providing code density comparable to 16-bit cores while preserving 8-bit pricing. The 44-QFN package exposes up to 36 I/O pins and supports in-circuit serial programming (ICSP) plus in-circuit debugging via two pins, allowing field firmware updates and on-board debug without removing the MCU. Typical applications include industrial control systems, sensor interface modules, small appliance controls, automotive body electronics, and low-cost consumer devices. The combination of low power, ample peripherals, and the PIC18 instruction set makes it a strong fit for cost-sensitive embedded designs. When designing with this part, plan for proper decoupling (100 nF on VDD close to each VDD pin plus a bulk 10 uF), use the internal RC oscillator when crystal accuracy is not critical, and leverage the nanoWatt sleep modes for battery-powered applications. Always reference the Microchip PIC18F4221 datasheet (DS39631) for errata and AC/DC timing. This page synthesizes distributor pricing, parametric alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single decision-ready reference.

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PIC18F4221T-I/PT - 8-bit 40MHz 4KB Flash MCU | Microchip
PIC18F4221T-I/PT

PIC18F4221T-I/PT - 8-bit 40MHz 4KB Flash MCU | Microchip

The Microchip Technology PIC18F4221T-I/PT is an 8-bit PIC18 microcontroller IC operating at up to 40 MHz with 4 KB (2K x 16) of Flash program memory, packaged in a 44-pin TQFP (10x10 mm) form factor. It is supplied in tape-and-reel packaging (suffix "T") and targets the industrial temperature range of -40C to +85C. What is an 8-bit PIC microcontroller? An 8-bit MCU (microcontroller unit) is a small computer-on-a-chip that processes data 8 bits at a time. PIC microcontrollers from Microchip use a RISC (Reduced Instruction Set Computer) architecture with a Harvard memory structure, separating program and data buses for fast, deterministic execution. Within the broader semiconductor taxonomy, PIC18F belongs to the PIC18 family of enhanced Flash microcontrollers, itself part of the 8-bit MCU category, which sits under embedded controllers and integrated circuits. PIC18F parts are widely used for low-power, cost-sensitive applications requiring simple peripherals and easy migration across pin counts. Key features of the PIC18F4221T-I/PT include 512 bytes of RAM, 256 bytes of EEPROM data memory, a 10-bit ADC with multiple channels, nanoWatt power-management technology for low-power sleep modes, and 36 digital I/O pins. The device supports supply voltages from 4.2V to 5.5V typical, includes an internal oscillator, multiple timers, USART, MSSP (I2C/SPI), and nanoWatt features for battery-friendly operation. Architecturally, the PIC18F4221 uses an enhanced RISC core with 77 single-word instructions, hardware multiplier, and 16-bit wide instruction words. The 40 MHz clock delivers up to 10 MIPS (100 ns instruction execution), with interrupt handling, context saving, and a priority interrupt controller for deterministic real-time response. Peripheral integration is mature and well documented across Microchip's toolchain, including MPLAB X IDE, XC8 compilers, and a broad library of application notes. Typical applications include industrial control, sensor interfaces, low-power remote controls, consumer appliances, automotive body and comfort modules, and USB-less embedded products where cost and power budget matter. The 36 I/O pins and 10-bit ADC also suit HMI (human-machine interface) front panels and instrument clusters. When designing with this part, plan for a minimum 1uF decoupling capacitor on VDD and place it within 5 mm of the supply pin. For low-power designs, leverage nanoWatt modes (Idle, Sleep, and Timer1 oscillator) and verify the ADC acquisition time against source impedance. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a faster path to a confident part selection.

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PIC18F4320-E/ML - 8-bit MCU, 8KB Flash, 44-QFN | Microchip
PIC18F4320-E/ML

PIC18F4320-E/ML - 8-bit MCU, 8KB Flash, 44-QFN | Microchip

The Microchip Technology PIC18F4320-E/ML is an 8-bit PIC microcontroller in the PIC18F family, integrating 8 KB of Flash program memory, 512 bytes of SRAM, and 256 bytes of EEPROM in a 44-pin QFN (8x8 mm) package with exposed thermal pad. It executes instructions at up to 25 MHz (40 MHz max on selected speed grades), delivering 10 MIPS while operating from 2.0 V to 5.5 V across the industrial temperature range of -40C to +125C. A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, and integrated peripherals such as timers, ADC, communication ports, and GPIO. The PIC18F family sits at the upper end of Microchip's 8-bit portfolio, offering an enhanced instruction set with C-friendly addressing, prioritized interrupts, and a 16-bit instruction word. Within the wider taxonomy, MCUs belong to embedded computing, which sits below microprocessors in the system hierarchy; the PIC18F family targets cost-sensitive real-time control rather than high-throughput digital signal processing. Key features include 36 digital I/O pins, 13 channels of 10-bit Analog-to-Digital converter (ADC), 2 analog comparators, 2 Capture/Compare/PWM modules, a master Synchronous Serial Port configurable as SPI or I2C, an Addressable Universal Asynchronous Receiver/Transmitter (AUSART), and self-programming Flash with In-Circuit Debug support. The device supports 1,000,000 erase/write cycles on Flash and 100,000 cycles on EEPROM, with 40-year data retention. The 'E' suffix indicates the extended (-40C to +125C) industrial temperature range, while the 'ML' suffix designates the 44-lead QFN package. The PIC18F4320 uses a Harvard RISC architecture with separate program and data buses, hardware multiply, and a 31-level stack, enabling deterministic real-time response. The 10-bit ADC integrates with the analog comparators for sensor conditioning, while the ECCP and CCP modules generate PWM for motor and power control. Self-programmability allows field firmware updates without an external programmer. Typical applications include industrial control, automotive body electronics, sensor interfacing, low-end motor control, and consumer appliances. The 44-QFN package suits space-constrained designs requiring up to 36 GPIO plus analog and serial connectivity. The PIC18F4320 pairs naturally with the PIC18F4220/4520 family siblings for upgrade/downgrade flexibility within the same 44-QFN footprint. When designing with this MCU, ensure adequate decoupling (100 nF ceramic per VDD pin) and route the exposed thermal pad to a continuous ground plane for thermal dissipation and low-impedance ground return. Verify ICP/ICD pin assignments against Microchip's programming specification to avoid debugger conflicts in production units. This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the bare manufacturer datasheet.

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PIC18F4320-E/P - 8KB Flash 8-bit MCU, 40MHz, DIP-40 | Microchip
PIC18F4320-E/P

PIC18F4320-E/P - 8KB Flash 8-bit MCU, 40MHz, DIP-40 | Microchip

The Microchip Technology PIC18F4320-E/P is an 8-bit CMOS Flash-based PIC18 microcontroller in a 40-pin PDIP (DIP-40) package, delivering 10 MIPS performance with 40 MHz maximum clock speed. The -E suffix designates the extended industrial temperature grade of -40C to +125C, suitable for harsh-environment deployments. It integrates 8 KB of Flash program memory (4K x 16 words), 512 bytes of SRAM, and 256 bytes of EEPROM data memory. An 8-bit microcontroller (MCU) is a small computer-on-a-chip containing a CPU, RAM, non-volatile program memory, and peripherals. PIC18F microcontrollers belong to the enhanced mid-range PIC architecture, sitting between baseline PIC10/12/16 devices and PIC24/dsPIC 16-bit families. They execute one instruction per clock cycle, providing deterministic performance for embedded control. PIC18F4320-E/P fits this hierarchy as a general-purpose 8-bit MCU with nanoWatt power management. Key features include 36 digital I/O pins, 13 channels of 10-bit Analog-to-Digital conversion (10-bit ADC), two analog comparators, two Capture/Compare/PWM modules, and a synchronous serial port configurable as 3-wire SPI or 2-wire I2C. The device supports self-programming and In-Circuit Debugging (ICD) via two programming pins. nanoWatt Technology provides multiple power-managed modes - Run, Idle, and Sleep - with on-the-fly clock switching from a 31 kHz internal oscillator up to 40 MHz external. The architecture uses a Harvard bus with separate program and data paths, an 8-bit ALU, and a 16-bit instruction word. Four interrupt priority levels and a hardware multiplier (8x8 single-cycle) simplify real-time control loops. The 10-bit ADC supports 13 input channels with acquisition time configurable for precision conversion. Two USART modules plus the MSSP (Master Synchronous Serial Port) provide flexible wired communication. Typical applications include industrial control systems, automotive body electronics, sensor signal conditioning, motor control loops, HVAC thermostats, and consumer appliance interfaces. The 5V supply range and extended temperature grade also suit outdoor and factory-floor equipment. When designing, allocate the ICD pins (PGC/PGD) carefully - they must remain accessible for debug, and the MCLR pin needs a 10 kohm pull-up to VDD. The 40-pin PDIP footprint provides through-hole mechanical robustness for hand-prototyped and field-serviceable boards. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not aggregated on the manufacturer product page or in the standalone datasheet.

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