PIC18F44K22-I/P - 8-bit 64MHz XLP MCU 16KB Flash 40-PDIP | Microchip
料号： PIC18F44K22-I/P ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.07 | $2.07 |
| 10 | $1.86 | $18.60 |
| 100 | $1.66 | $166.00 |
| 500 | $1.49 | $745.00 |
| 1,000 | $1.36 | $1,360.00 |
PIC18F44K22-I/P 概述
A PIC18 microcontroller is an 8-bit Harvard-architecture MCU built around a RISC core with hardware accumulator, hardware multiply, and a peripheral set optimized for low-power mixed-signal embedded designs. PIC18 sits at the top of Microchip's 8-bit PIC portfolio and shares a common instruction set across 28/40/44-pin packages, enabling firmware portability within the family. Within the power-management IC hierarchy it belongs to the broader "microcontroller -> MCU -> embedded controller -> semiconductor" taxonomy.
Key features include 16KB self-programmable Flash, hardware CCP/ECCP modules, multiple Enhanced USART, SPI, I2C interfaces, a 10-bit ADC with up to 28 input channels, mTouch capacitive touch peripherals, nanoWatt XLP sleep currents as low as 20 nA, and 5 CCP PWM channels for motor and lighting control. The -I/P suffix denotes the industrial temperature grade (-40C to +85C) and PDIP-40 package.
The architecture combines an 8-bit data path with a 16-bit instruction word, an 8-level hardware stack, and C-optimized architecture, which simplifies compiler output while preserving deterministic interrupt response. The peripheral set (ADC, comparators, CTMU, mTouch, EUSART, MSSP, ECCP) supports sensing, communication, and actuation without external logic.
Typical applications include low-power sensor nodes, home-automation appliances, industrial control panels, capacitive touch user interfaces, motor control, and USB/serial bridging in cost-sensitive embedded designs.
When designing with this MCU, leave headroom on Vdd for ADC accuracy and add a 100 nF decoupling cap adjacent to every supply pin. For firmware migration to newer families, validate the SFR map because newer Q-series parts reorganize peripheral registers.
直接替换替代料： PIC18F44K22-I/P ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18F44K22-I/P （相同外形与封装尺寸） ——差异在于 ADC, Core, Package, Timers, Mounting Type.
快速对比工具——选择替代料号进行并排对比：
PIC18F45K22-I/P
✅ 直接替换✓ 有现货
$2.1 / 个
查看数据手册 →PIC18F43K22-I/PT
✅ 直接替换✓ 有现货
$1.95 / 个
查看数据手册 →PIC18F44K22-E/P
✅ 直接替换✓ 有现货
$2.32 / 个
查看数据手册 →PIC18F442-I/P
✅ 直接替换✓ 有现货
$5.4 / 个
查看数据手册 →PIC18F4410-I/P
✅ 直接替换✓ 有现货
$4.7 / 个
查看数据手册 →PIC18F44K22-I/P 最大额定值与电气特性
| Family | PIC18F K22 |
| Core | 8-bit PIC18 Harvard RISC |
| Program Memory | 16 KB Flash |
| RAM | 768 bytes |
| EEPROM | 256 bytes |
| Max CPU Frequency | 64 MHz (16 MIPS) |
| 电源电压 | 2.3 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 10-bit, up to 28 channels |
| 封装 | 40-pin PDIP (0.600") |
| 工作温度 | -40C to +85C (industrial) |
| 安装类型 | Through-Hole |
| ROM Type | Flash |
| MSL 等级 | 1 (unlimited) |
| RoHS 状态 | Compliant |
PIC18F44K22-I/P 引脚配置
| 引脚 1 | MCLR/RE3 — Master Clear (reset) input / digital I/O pin RE3 |
| 引脚 2 | RA0/AN0 — PORTA bit 0 / ADC input AN0 |
| 引脚 3 | RA1/AN1 — PORTA bit 1 / ADC input AN1 |
| 引脚 4 | RA2/AN2 — PORTA bit 2 / ADC input AN2 |
| 引脚 5 | RA3/AN3 — PORTA bit 3 / ADC input AN3 |
| 引脚 6 | RA4 — PORTA bit 4 |
| 引脚 7 | RA5/AN4 — PORTA bit 5 / ADC input AN4 |
| 引脚 8 | RE0/AN5 — PORTE bit 0 / ADC input AN5 |
| 引脚 9 | RE1/AN6 — PORTE bit 1 / ADC input AN6 |
| 引脚 10 | RE2/AN7 — PORTE bit 2 / ADC input AN7 |
| 引脚 11 | VDD — Positive supply voltage |
| 引脚 12 | VSS — Ground reference |
| 引脚 13 | OSC1/CLKI — Crystal oscillator input or external clock |
| 引脚 14 | OSC2/CLKO — Crystal oscillator output or clock out |
| 引脚 15 | RC0/SOSO — PORTC bit 0 / SOSC secondary oscillator output |
| 引脚 16 | RC1/SOSI — PORTC bit 1 / SOSC secondary oscillator input |
| 引脚 17 | RC2 — PORTC bit 2 |
| 引脚 18 | RC3 — PORTC bit 3 |
| 引脚 19 | RD0 — PORTD bit 0 |
| 引脚 20 | RD1 — PORTD bit 1 |
| 引脚 21 | RD2 — PORTD bit 2 |
| 引脚 22 | RD3 — PORTD bit 3 |
| 引脚 23 | RC4 — PORTC bit 4 |
| 引脚 24 | RC5 — PORTC bit 5 |
| 引脚 25 | RC6 — PORTC bit 6 |
| 引脚 26 | RC7 — PORTC bit 7 |
| 引脚 27 | RD4 — PORTD bit 4 |
| 引脚 28 | RD5/CCP1 — PORTD bit 5 / Capture/Compare/PWM 1 |
| 引脚 29 | RD6/CCP2 — PORTD bit 6 / Capture/Compare/PWM 2 |
| 引脚 30 | RD7/CCP3 — PORTD bit 7 / Capture/Compare/PWM 3 |
| 引脚 31 | VSS — Ground reference |
| 引脚 32 | VDD — Positive supply voltage |
| 引脚 33 | RB0 — PORTB bit 0 / interrupt-on-change |
| 引脚 34 | RB1 — PORTB bit 1 / interrupt-on-change |
| 引脚 35 | RB2 — PORTB bit 2 / interrupt-on-change |
| 引脚 36 | RB3 — PORTB bit 3 / interrupt-on-change |
| 引脚 37 | RB4 — PORTB bit 4 / interrupt-on-change |
| 引脚 38 | RB5 — PORTB bit 5 / interrupt-on-change |
| 引脚 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| 引脚 40 | RB7/PGD — PORTB bit 7 / ICSP data |
典型应用
PIC18F44K22-I/P 适用于 7 应用s: Low-Power Sensor Nodes, Home Appliance Control, Industrial Control Panels, Capacitive Touch User Interfaces, Motor Control and PWM Drive, USB/Serial Bridging, Automotive Body Electronics.
Low-Power Sensor Nodes
The PIC18F44K22-I/P's nanoWatt XLP sleep current and 2.3V-5.5V supply range make it a strong fit for battery-driven sensor nodes such as wireless thermostats, utility meters, and environmental monitors. At 64 MHz / 16 MIPS the device can service sensor reads and transmit bursts within tight active windows, while pulling micro-amps during sleep to extend coin-cell life into the multi-year range. The 28-channel 10-bit ADC is sufficient for multi-element sensor front-ends.
推荐
Home Appliance Control
The PIC18F44K22-I/P serves as the main controller for white-goods appliances (washing machines, dishwashers, induction cookers) where it sequences motors, reads user panels, and drives displays. The 5 ECCP PWM channels simplify BLDC and triac-based load control, while the 28-channel ADC handles NTC temperature sensing and current monitoring. Its 5V tolerance and industrial -40C to +85C grade suit harsh kitchen and laundry environments.
推荐
Industrial Control Panels
The PIC18F44K22-I/P suits industrial HMI panels, PLC expansion modules, and process-control front-ends where deterministic 8-bit performance and an extensive peripheral set are needed without the cost of a Cortex-M0. Its EUSART supports RS-485 Modbus links, while the MSSP block enables SPI/I2C peripherals. The 36 I/O pins and 10-bit ADC allow direct interfacing with industrial sensors and actuator drivers.
推荐
Capacitive Touch User Interfaces
With the integrated mTouch peripheral and CTMU charge-time measurement unit, the PIC18F44K22-I/P supports robust capacitive touch buttons, sliders, and proximity sensors without external ICs. The 64 MHz core can debounce and report touch events within 1 ms, while the XLP sleep modes keep idle touch scan power under 100 uA. This suits kitchen appliances, medical user interfaces, and consumer remote controls.
推荐
Motor Control and PWM Drive
The PIC18F44K22-I/P's 5 Enhanced CCP modules deliver flexible PWM generation for BLDC, stepper, and triac-driven AC motors. With 16 MIPS throughput and dedicated timers, it can implement field-oriented control loops for sub-kW motors or simple V/Hz scalar control for fans and pumps. The same ADC samples back-EMF and current, simplifying hardware and BOM cost.
推荐
USB/Serial Bridging
The PIC18F44K22-I/P, paired with its on-chip EUSART and MSSP, commonly serves as a UART-to-SPI/I2C bridge or as a CDC virtual COM port device when paired with an external USB transceiver. The 64 MHz core and 16 MIPS handle USB 2.0 full-speed interrupt and bulk transactions with low protocol overhead. This suits industrial configuration tools, IoT gateways, and legacy equipment modernization.
推荐
Automotive Body Electronics
The PIC18F44K22-I/P's industrial temperature grade and robust peripheral set suit non-safety automotive body applications such as door modules, seat controllers, and ambient lighting. For AEC-Q100-qualified projects, the -E/P extended-temperature variant in the same 40-pin PDIP is also available. The 36 I/O pins drive LEDs, relays, and LIN slaves, while the 10-bit ADC reads sensors across the cabin.
推荐
推荐产品汇总
工程参考数据： PIC18F44K22-I/P ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC18F45K22-I/P | PIC18F43K22-I/P | PIC18F44K22-E/P | PIC18F442-I/P | PIC18F4410-I/P |
|---|---|---|---|---|---|---|
| Package | 40-pin PDIP (0.600") | 40-pin PDIP (0.600") - same | 40-pin PDIP (0.600") - same | 40-pin PDIP (0.600") - same | 40-pin PDIP (0.600") - same | 40-pin PDIP (0.600") - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 16 KB | 32 KB (+100%) | 8 KB (-50%) | 16 KB (same) | 16 KB (same) | 16 KB (same) |
| RAM | 768 bytes | 1024 bytes (+33%) | 512 bytes (-33%) | 768 bytes (same) | 768 bytes (same) | 768 bytes (same) |
| Max CPU Frequency | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +85C | -40C to +125C (extended) | -40C to +85C | -40C to +85C |
| Supply Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 4.2 V to 5.5 V (older spec) | 2.0 V to 5.5 V |
| I/O Pins | 36 | 36 | 36 | 36 | 36 | 36 |
关键差异点
- nanoWatt XLP extreme-low-power technology with sub-microamp sleep currents （对比 PIC18F442-I/P)
- Higher 64 MHz / 16 MIPS throughput vs legacy F442 40 MHz / 10 MIPS （对比 PIC18F442-I/P)
- Drop-in upgrade path with 32 KB Flash and 1024 B RAM （对比 PIC18F43K22-I/P)
设计说明
Place a 100 nF decoupling capacitor within 5 mm of every Vdd/Vss pin pair (pins 11/12 and 31/32 on the 40-pin PDIP). For battery applications drawing <100 uA average, also add a 10 uF bulk capacitor on the Vdd rail to absorb inrush during transmit bursts. Use a ferrite bead on Vdd if the MCU shares a rail with a noisy motor driver.
Route the crystal traces (OSC1/OSC2, pins 13/14) short and symmetric, with a ground guard ring, and keep them away from PWM edges. For mTouch capacitive sensing, dedicate adjacent ground pour and avoid nearby traces that inject noise into the CTMU charge measurement. Ensure MCLR (pin 1) has a 10 kohm pull-up and a 100 nF cap to ground for in-circuit serial programming (ICSP) robustness.
Do not assume SFR compatibility when porting PIC18F44K22 firmware to PIC18F442 - the legacy F442 family uses different peripheral register layouts and runs at 40 MHz max (10 MIPS), not 64 MHz. Always validate the configuration bits against the new part's header file before production programming. Also confirm ICD/debugger tool chain support: MPLAB X IDE with PICkit 5 is recommended for K22 family.
合规信息
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; for AEC-Q100 automotive-grade applications, choose PIC18F44K22-E/P (extended temp) or migrate to a Q-series AEC-Q100 part. Industrial temp grade (-40C to +85C) per -I/P suffix.
