PIC18LF44K22-E/PT - 8-bit 48MHz 16KB Flash MCU | Microchip
N.º da peça: PIC18LF44K22-E/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.95 | $2,95 |
| 10 | $2.65 | $26,50 |
| 100 | $2.31 | $231,00 |
| 500 | $1.95 | $975,00 |
| 1.000 | $1.7 | $1.700,00 |
PIC18LF44K22-E/PT Visão geral
A PIC microcontroller is a compact, programmable microprocessor on a single integrated circuit that combines a CPU core, non-volatile Flash memory, RAM, EEPROM, and configurable peripherals. PIC microcontrollers belong to the broader category of microcontrollers (MCUs) and embedded controllers, sitting within the taxonomy microcontroller -> embedded processor -> semiconductor. Microchip's PIC18 family uses a RISC architecture with a Harvard memory layout, which delivers deterministic instruction execution (200 ns per instruction at 48 MHz), strong code density, and mature MPLAB X IDE and XC8 toolchain support.
Key features that distinguish the PIC18LF44K22-E/PT include nanoWatt XLP technology that delivers sleep currents in the nanoamp range, multiple low-power modes (Sleep, Idle, Doze, and alternate clock), and peripheral modules that can operate independently in sleep mode. The 12-bit ADC with up to 30 channels, mTouch capacitive-touch sensing support, and 5 CCP/ECCP modules make it suitable for mixed-signal and human-interface designs.
The architecture relies on a flash-based Harvard core with a hardware multiplier for high-speed arithmetic, internal oscillator options (up to 16 MHz HFINTOSC with PLL), and dual analog comparators. The integrated CTMU module supports capacitive sensing for touch buttons and sliders, while the EEPROM emulation in Flash provides flexible data storage.
Typical applications include battery-powered sensor nodes, portable consumer devices, industrial control modules, low-power IoT edge devices, capacitive touch user interfaces, and embedded control in energy-metering products. The wide operating voltage and low sleep current also make it a strong fit for energy-harvesting designs.
A critical design consideration is to ensure your firmware uses the appropriate config bits for the LF voltage range (1.8V to 3.6V), and to validate that any peripheral operating mode you select is supported at the chosen clock frequency across temperature. For longer battery life, leverage the deep-sleep modes with RTCC and use the internal LFINTOSC for low-frequency time bases.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for MPN decoding, lifecycle, and parametric comparison.
Alternativas drop-in para PIC18LF44K22-E/PT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC18LF44K22-E/PT (mesmo formato e footprint) — diferindo em Package, Program Memory (Flash), ADC, Operating Temperature, Timers.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F44K22-E/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F44K22-I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18LF44K22-I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F45K22-I/PT
✅ Drop-In✓ Em estoque
$2.65 / unidade
Ver ficha técnica →PIC18F45K22-E/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F46K22-I/PT
✅ Drop-In✓ Em estoque
$2.32 / unidade
Ver ficha técnica →PIC18LF44K22-E/PT Classificações máximas e características elétricas
| Core | PIC18 (8-bit RISC) |
| Program Memory | 16 KB (8K x 16) Flash |
| Data SRAM | 768 bytes |
| Data EEPROM | 256 bytes |
| Max CPU Speed | 48 MHz (12 MIPS) |
| Operating Voltage (LF) | 1.8 V to 3.6 V |
| I/O Pins | 34 |
| ADC | 12-bit, up to 30 channels |
| Encapsulamento | 44-pin TQFP (10x10 mm) |
| Tipo de montagem | Surface Mount |
| Temperatura de operação | -40C to +125C |
| Low-Power Tech | nanoWatt XLP |
| Comparators | 2 |
| CCP / ECCP | 5 modules |
| UART | 2x Enhanced USART |
| SPI / I2C (MSSP) | 2x |
| Status RoHS | Compliant |
Configuração de pinos do PIC18LF44K22-E/PT
| Pino 1 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| Pino 2 | RA3/AN3/VREF+ — Digital I/O / Analog input / ADC positive reference |
| Pino 3 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Pino 4 | RA5/AN4/SS/HLVDIN — Digital I/O / Analog / SPI slave select / HLVD input |
| Pino 5 | RA6/OSC2/CLKO — Digital I/O / Oscillator output / Clock output |
| Pino 6 | RA7/OSC1/CLKI — Digital I/O / Oscillator input / Clock input |
| Pino 7 | VDD — Positive supply voltage (1.8V-3.6V) |
| Pino 8 | VSS — Ground reference |
| Pino 9 | RB0/INT0/FLT0 — Digital I/O / External interrupt 0 / PWM fault input |
| Pino 10 | RB1/INT1 — Digital I/O / External interrupt 1 |
| Pino 11 | RB2/INT2 — Digital I/O / External interrupt 2 |
| Pino 12 | RB3/INT3/CTED1 — Digital I/O / External interrupt 3 / CTMU edge 1 |
| Pino 13 | RB4/INT4/CTED2 — Digital I/O / External interrupt 4 / CTMU edge 2 |
| Pino 14 | RB5/INT5/P1B — Digital I/O / External interrupt 5 / PWM enhanced output |
| Pino 15 | RB6/ICSP_PGC — Digital I/O / In-Circuit Serial Programming clock |
| Pino 16 | RB7/ICSP_PGD — Digital I/O / In-Circuit Serial Programming data |
| Pino 17 | RC0/SOSCO — Digital I/O / Secondary oscillator output |
| Pino 18 | RC1/SOSCI — Digital I/O / Secondary oscillator input |
| Pino 19 | RC2/CCP1/P1A — Digital I/O / CCP1 output / PWM enhanced output |
| Pino 20 | RC3/SCL1/SCK1 — Digital I/O / I2C1 clock / SPI1 clock |
| Pino 21 | RC4/SDA1/SDI1 — Digital I/O / I2C1 data / SPI1 data in |
| Pino 22 | RC5/SDO1 — Digital I/O / SPI1 data out |
| Pino 23 | RC6/TX1/CK1 — Digital I/O / USART1 transmit / USART1 clock |
| Pino 24 | RC7/RX1/DT1 — Digital I/O / USART1 receive / USART1 data |
| Pino 25 | RE3/RD — Digital I/O (MCLR disabled) / Register read |
| Pino 26 | AVDD — Analog positive supply |
| Pino 27 | AVSS — Analog ground |
| Pino 28 | RD0/PSP0 — Digital I/O / Parallel slave port data bit 0 |
| Pino 29 | RD1/PSP1 — Digital I/O / Parallel slave port data bit 1 |
| Pino 30 | RD2/PSP2 — Digital I/O / Parallel slave port data bit 2 |
| Pino 31 | RD3/PSP3 — Digital I/O / Parallel slave port data bit 3 |
| Pino 32 | RD4/PSP4 — Digital I/O / Parallel slave port data bit 4 |
| Pino 33 | RD5/PSP5 — Digital I/O / Parallel slave port data bit 5 |
| Pino 34 | RD6/PSP6 — Digital I/O / Parallel slave port data bit 6 |
| Pino 35 | RD7/PSP7 — Digital I/O / Parallel slave port data bit 7 |
| Pino 36 | RE0/AN5 — Digital I/O / Analog input channel 5 |
| Pino 37 | RE1/AN6 — Digital I/O / Analog input channel 6 |
| Pino 38 | RE2/AN7 — Digital I/O / Analog input channel 7 |
| Pino 39 | VDD — Positive supply voltage (1.8V-3.6V) |
| Pino 40 | VSS — Ground reference |
| Pino 41 | RB0 — Digital I/O (Note: duplicate pad - check datasheet) |
| Pino 42 | NC — Not connected (per datasheet) |
| Pino 43 | MCLR/RE3 — Master clear reset input (programming mode) |
| Pino 44 | RA0/AN0/ULPWU — Digital I/O / Analog input 0 / Ultra-low-power wake-up |
Aplicações típicas
PIC18LF44K22-E/PT é adequado para 7 aplicaçãos: Battery-Powered Sensor Nodes, Industrial Control Modules, Capacitive Touch User Interfaces, Portable Consumer Electronics, Energy Metering and Monitoring, IoT Edge and Home Automation Devices, Automotive Body and Cabin Electronics.
Battery-Powered Sensor Nodes
The PIC18LF44K22-E/PT is engineered for battery-powered wireless sensor nodes where 1.8 V to 3.6 V operation and nanoWatt XLP sleep currents in the nanoamp range extend coin-cell life to months or years. Its 16 KB Flash, 768-byte SRAM, and 12-bit ADC sample thermistors, photodiodes, or analog sensors while the CTMU supports touch wake-up. Drop it onto a coin-cell powered PCB with a sub-GHz radio module for periodic duty-cycled sensing; unlike higher-voltage MCUs it does not require a boost converter, reducing BOM cost.
Recomendado
Industrial Control Modules
The PIC18LF44K22-E/PT's Extended -40C to +125C temperature grade and 48 MHz / 12 MIPS throughput suit industrial PLC-style I/O modules and motor-control peripherals. The 34 I/O pins drive relays, optocouplers, and 5 V-tolerant logic via the standard-voltage PIC18F44K22-E/PT sibling, while 2 Enhanced USART, 2 MSSP, and 5 CCP/ECCP enable multi-protocol industrial networking. The 12-bit ADC with 30 channels reads 4-20 mA loops through external scaling resistors.
Recomendado
Capacitive Touch User Interfaces
The PIC18LF44K22-E/PT integrates Microchip's mTouch capacitive-touch sensing via the CTMU module and ADC, replacing mechanical buttons with reliable touch pads, sliders, and proximity sensors. Up to 30 ADC channels support a full touch keypad plus sliders on a single MCU, while nanoWatt XLP keeps idle power under 1 uA. The 12-bit resolution ensures clean proximity detection and reliable operation through overlays up to several millimeters thick.
Recomendado
Portable Consumer Electronics
Handheld consumer products benefit from the PIC18LF44K22-E/PT's 1.8 V to 3.6 V single-Li-ion compatibility, nanoWatt XLP sleep modes, and 48 MHz performance for user-interface response. Drive small color TFT displays via SPI, manage battery charging via PWM, and read user inputs through ADC-capable touch pads. The 256-byte EEPROM stores user preferences and calibration data that survive power cycles without wear-leveling concerns.
Recomendado
Energy Metering and Monitoring
The PIC18LF44K22-E/PT's 12-bit ADC, dual comparators, and 5 CCP/ECCP modules make it well-suited for single-phase energy meters and power monitoring. The 34 I/O pins interface with current transformers, voltage sense dividers, LCD displays, and isolated communication interfaces. The 1.8 V minimum VDD supports auxiliary-power operation directly from the meter's residual bus supply without an LDO in the measurement path.
Recomendado
IoT Edge and Home Automation Devices
The PIC18LF44K22-E/PT powers IoT edge controllers and home automation devices requiring low standby power and reliable I/O expansion. Its dual USART interfaces to Wi-Fi or BLE modules (e.g. RN4870, ESP-AT), while SPI/I2C drive sensors and EEPROM storage. The 1.8 V to 3.6 V range allows direct LiFePO4 battery operation with deep-discharge tolerance for energy-harvesting or backup-powered designs.
Recomendado
Automotive Body and Cabin Electronics
While the base PIC18LF44K22-E/PT lacks AEC-Q100 qualification, designers use the LF variant's low-voltage operation for non-safety automotive body modules such as ambient lighting controllers, door-modules, and cabin sensors. Pair it with external CAN transceivers, switch-mode regulators, and LIN bus interfaces; the Extended -40C to +125C grade handles under-dash thermal environments. Use the PIC18F44K22-E/PT when 5 V tolerance is required.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18LF44K22-E/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F44K22-E/PT | PIC18F44K22-I/PT | PIC18LF44K22-I/PT | PIC18F45K22-I/PT | PIC18F45K22-E/PT | PIC18F46K22-I/PT |
|---|---|---|---|---|---|---|---|
| Package | 44-pin TQFP (10x10) | 44-pin TQFP (10x10) - same | 44-pin TQFP (10x10) - same | 44-pin TQFP (10x10) - same | 44-pin TQFP (10x10) - same | 44-pin TQFP (10x10) - same | 44-pin TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage | 1.8 V to 3.6 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 1.8 V to 3.6 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB | 32 KB | 64 KB |
| SRAM | 768 bytes | 768 bytes | 768 bytes | 768 bytes | 1536 bytes | 1536 bytes | 3896 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 1024 bytes |
| USB Peripheral | No | No | No | No | Yes (USB 2.0 Full-Speed) | Yes (USB 2.0 Full-Speed) | No |
| Operating Temperature | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
| Max CPU Speed | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) |
Principais diferenciais
- 1.8 V minimum VDD enables deeper battery discharge (vs PIC18F44K22-E/PT)
- Identical 16 KB Flash, 768-byte SRAM, and 44-pin TQFP pinout as the broader K22 family (vs PIC18F45K22-I/PT)
- Extended -40C to +125C temperature grade for industrial environments (vs PIC18LF44K22-I/PT)
Notas de projeto
The PIC18LF44K22-E/PT supports nanoWatt XLP with multiple low-power modes including Sleep (typical < 100 nA with RTCC), Idle, and Doze. To maximize battery life, switch peripherals off individually via PMD registers, enable RTCC from the secondary 32 kHz oscillator for periodic wake-up, and configure unused pins as outputs driving low. Use the LFINTOSC (31 kHz) for ultra-low-power time bases and gate the main HFINTOSC with PLL only when needed for active processing.
Place a 100 nF decoupling capacitor within 5 mm of each VDD pin (pins 7 and 39) and a bulk 10 uF tantalum or ceramic capacitor near the device. Keep the ICSP_PGC/RB6 and ICSP_PGD/RB7 traces short and isolated from switching signals to avoid programming issues. For ADC accuracy, route AVSS as a separate trace back to the source VSS to avoid ground loops, and place a ferrite bead between VDD and AVDD if the analog supply is shared with digital.
Do not connect the MCLR pin directly to VDD without a pull-up resistor or use a slow-rising VDD slope; MCLR must see a clean rising edge for proper reset. Configuration bits must explicitly disable the watchdog if not used, otherwise the part will reset unexpectedly. When migrating from PIC18F44K22 to PIC18LF44K22 firmware, verify any peripheral operating mode that requires a higher VDD (e.g. 5 V analog references) - the LF variant cannot tolerate above 3.6 V on any pin.
For designs using the ADC, the PIC18LF44K22-E/PT achieves best linearity at 48 MHz with acquisition time of at least 1.4 us. Route analog inputs away from high-current switching traces, use a ground pour on the analog side, and place a small RC filter (100 ohm + 100 nF) on each analog channel if you see noise from external sensor biasing. For capacitive-touch sensing with the CTMU, route touch electrodes as guarded traces with a ground plane underneath and avoid parallel high-impedance signal traces crossing the touch pads.
Informações de conformidade
RoHS and REACH compliant per Microchip product page; lead-free and halogen-free. Not AEC-Q100 qualified - use AEC-Q100-grade PIC18 variants for automotive safety applications. The -E suffix denotes Extended -40C to +125C temperature grade.