PIC18F4220T-I/PT - 40MHz 8-bit MCU 4KB Flash 36 I/O TQFP-44 | Microchip
料号： PIC18F4220T-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.95 | $1,475.00 |
| 1,000 | $2.57 | $2,570.00 |
PIC18F4220T-I/PT 概述
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.
直接替换替代料： PIC18F4220T-I/PT ——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： PIC18F4220T-I/PT （相同外形与封装尺寸） ——差异在于 Package, Timers, Core Architecture, Supply Voltage (VDD), Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC18F4220-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F4520-I/PT
✅ 直接替换✓ 有现货
$4.05 / 个
查看数据手册 →PIC18F4220T-I/ML
✅ 直接替换✓ 有现货
$3.64 / 个
查看数据手册 →PIC18F4420-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F4320-I/PT
✅ 直接替换✓ 有现货
$3.62 / 个
查看数据手册 →PIC18F4220T-I/PT 最大额定值与电气特性
| Core Architecture | PIC18 (8-bit Harvard) |
| Program Memory | 4 KB Flash (2K x 16) |
| RAM | 512 bytes |
| EEPROM | 256 bytes |
| Maximum Clock Speed | 40 MHz |
| MIPS (Peak) | 10 MIPS |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| Digital I/O Pins | 36 |
| ADC | 10-bit, up to 13 channels |
| Timers | 4 (Timer0/1/2/3) |
| Capture/Compare/PWM | 1 CCP + 1 ECCP |
| Communication | EUSART, MSSP (SPI / I2C) |
| 封装 | 44-pin TQFP (PT), 10x10 mm |
| 工作温度 | -40C to +85C (Industrial, -I) |
| 安装类型 | Surface Mount, Tape & Reel |
| RoHS 状态 | Compliant |
| Programming/Debug | ICSP, ICD |
| Power-Saving Technology | nanoWatt |
PIC18F4220T-I/PT 引脚配置
| 引脚 1 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| 引脚 2 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| 引脚 3 | RA2/AN2/VREF- — Digital I/O / Analog input 2 / ADC VREF- |
| 引脚 4 | RA3/AN3/VREF+ — Digital I/O / Analog input 3 / ADC VREF+ |
| 引脚 5 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| 引脚 6 | RA5/AN4/SS — Digital I/O / Analog input 4 / SPI slave select |
| 引脚 7 | RA6/OSC2 — Digital I/O / Crystal oscillator output |
| 引脚 8 | OSC1/CLKI/RA7 — Crystal oscillator input / external clock / Digital I/O |
| 引脚 9 | MCLR/VPP/RE3 — Master clear reset / programming voltage / Digital I/O |
| 引脚 10 | VDD — Positive supply voltage |
| 引脚 11 | VSS — Ground reference |
| 引脚 12 | RB0/INT0/FLT0 — Digital I/O / External interrupt 0 / PWM fault input |
| 引脚 13 | RB1/INT1 — Digital I/O / External interrupt 1 |
| 引脚 14 | RB2/INT2 — Digital I/O / External interrupt 2 |
| 引脚 15 | RB3/INT3/CCP2 — Digital I/O / External interrupt 3 / CCP2 output |
| 引脚 16 | RB4 — Digital I/O |
| 引脚 17 | RB5/PGM — Digital I/O / Low-voltage ICSP programming |
| 引脚 18 | RB6/PGC — Digital I/O / In-circuit debugger clock |
| 引脚 19 | RB7/PGD — Digital I/O / In-circuit debugger data |
| 引脚 20 | VSS — Ground reference |
| 引脚 21 | VDD — Positive supply voltage |
| 引脚 22 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / Timer1 clock input |
| 引脚 23 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 I/O |
| 引脚 24 | RC2/CCP1 — Digital I/O / CCP1 PWM output |
| 引脚 25 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| 引脚 26 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| 引脚 27 | RC5/SDO — Digital I/O / SPI data out |
| 引脚 28 | RC6/TX/CK — Digital I/O / EUSART async transmit / clock |
| 引脚 29 | RC7/RX/DT — Digital I/O / EUSART async receive / data |
| 引脚 30 | VSS — Ground reference |
| 引脚 31 | VDD — Positive supply voltage |
| 引脚 32 | RD0/PSP0 — Digital I/O / Parallel slave port bit 0 |
| 引脚 33 | RD1/PSP1 — Digital I/O / Parallel slave port bit 1 |
| 引脚 34 | RD2/PSP2 — Digital I/O / Parallel slave port bit 2 |
| 引脚 35 | RD3/PSP3 — Digital I/O / Parallel slave port bit 3 |
| 引脚 36 | RD4/PSP4 — Digital I/O / Parallel slave port bit 4 |
| 引脚 37 | RD5/PSP5 — Digital I/O / Parallel slave port bit 5 |
| 引脚 38 | RD6/PSP6 — Digital I/O / Parallel slave port bit 6 |
| 引脚 39 | RD7/PSP7 — Digital I/O / Parallel slave port bit 7 |
| 引脚 40 | VSS — Ground reference |
| 引脚 41 | VDD — Positive supply voltage |
| 引脚 42 | RE0/RD/AN5 — Digital I/O / parallel port read / Analog input 5 |
| 引脚 43 | RE1/WR/AN6 — Digital I/O / parallel port write / Analog input 6 |
| 引脚 44 | RE2/CS/AN7 — Digital I/O / parallel port chip select / Analog input 7 |
典型应用
PIC18F4220T-I/PT 适用于 6 应用s: Industrial Control Panel HMI, Battery-Powered Sensor Node, Appliance User Interface Controller, HVAC Thermostat Control, Automotive Body Module (non-safety), Low-Cost Data Acquisition Front End.
Industrial Control Panel HMI
The PIC18F4220T-I/PT drives industrial control panel HMIs where 36 I/O pins directly connect to a 4x4 keypad matrix, a 2x16 character LCD, and status LEDs without external glue logic. Its 40 MHz / 10 MIPS throughput comfortably handles debouncing, menu rendering, and Modbus RTU over the EUSART at 115200 baud. The 4 KB Flash holds a state-machine interpreter plus Modbus protocol stack, while the 10-bit ADC reads up to 13 analog panel sensors (temperature, pressure, current). The industrial -40C to +85C rating matches IP54 cabinet environments; nanoWatt sleep mode drops idle current below 1 uA between operator interactions.
推荐
Battery-Powered Sensor Node
The PIC18F4220T-I/PT anchors battery-powered sensor nodes that must sleep most of the time and wake on a timer interrupt. The nanoWatt technology cuts quiescent current to roughly 100 nA in sleep, extending coin-cell life to multi-year operation. The 10-bit ADC reads up to 13 analog channels (temperature, humidity, gas) at low duty cycle, and the MSSP port talks I2C to a digital sensor while the EUSART logs data over RS-485. With 4 KB Flash and 256 B EEPROM available for log metadata, designers avoid an external EEPROM and keep BOM count low - critical for sub-$5 sensor node cost targets in IoT retrofits.
推荐
Appliance User Interface Controller
In washing machines, dishwashers and microwave ovens, the PIC18F4220T-I/PT reads front-panel buttons, drives a 7-segment display and a buzzer while communicating with the main controller over UART. The CCP/ECCP modules generate PWM for backlight dimming and tone generation, freeing the CPU from timing-critical tasks. Its 5V-tolerant digital inputs handle noisy switch signals from the front panel without external protection. Industrial temperature grade plus the long-life Microchip roadmap makes it a safe choice for appliances shipped in high volume over 7-10 year production runs where part obsolescence is unacceptable.
推荐
HVAC Thermostat Control
HVAC thermostats rely on the PIC18F4220T-I/PT to read thermistor temperature via the 10-bit ADC, drive a relay or TRIAC through a CCP PWM, and run a Proportional-Integral control loop. With 4 KB Flash, the part holds the PI algorithm plus a weekly schedule table without external memory. The EUSART provides a Modbus or BACnet link to a building management system, and the MSSP drives an I2C EEPROM for schedule persistence across power cycles. The industrial temperature range ensures reliable operation in equipment closets reaching 70C, while nanoWatt sleep mode reduces standby power to meet ENERGY STAR thermostat budgets.
推荐
Automotive Body Module (non-safety)
The PIC18F4220T-I/PT handles non-safety automotive body functions such as interior lighting, seat-position memory and door-zone logic where its industrial -40C to +85C grade is acceptable. Its 13-channel 10-bit ADC reads multiple potentiometers (seat position) and photo sensors, while the ECCP module drives MOSFETs for lighting fade-in/out. The 44-pin TQFP package gives ample I/O for switch scanning without external mux ICs. For safety-relevant ECUs (airbag, ABS, ADAS) requiring AEC-Q100, upgrade to PIC18F4520-I/PT-Q1 or PIC18F46K80-I/PT which share the same TQFP-44 footprint but add automotive qualification.
推荐
Low-Cost Data Acquisition Front End
The PIC18F4220T-I/PT serves as a USB-to-UART/I2C bridge in low-cost data acquisition front ends, using the EUSART and MSSP to expose serial peripherals to a host PC over a USB-UART cable. The 10 MIPS throughput handles continuous stream buffering at 115200 baud with minimal CPU load. Its 4 KB Flash can hold a small command interpreter and protocol multiplexer, while the 512 B RAM buffers one packet at a time. For lab/educational markets, the industrial temperature rating plus Microchip's free MPLAB X toolchain make this a budget-friendly choice for student DAQ kits and OEM bench instruments under $30 BOM.
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推荐产品汇总
工程参考数据： PIC18F4220T-I/PT ——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 | PIC18F4220-I/PT | PIC18F4520-I/PT | PIC18F4220T-I/ML | PIC18F4420-I/PT | PIC18F4320-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (PT) | TQFP-44 (PT) - same | TQFP-44 (PT) - same | QFN-44 (ML) - same footprint pin-count | TQFP-44 (PT) - same | TQFP-44 (PT) - same |
| Program Memory (Flash) | 4 KB | 4 KB | 32 KB | 4 KB | 16 KB | 8 KB |
| RAM | 512 bytes | 512 bytes | 1536 bytes | 512 bytes | 768 bytes | 512 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Max Clock Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Digital I/O Pins | 36 | 36 | 36 | 36 | 36 | 36 |
| ADC | 10-bit, 13 ch | 10-bit, 13 ch | 10-bit, 13 ch | 10-bit, 13 ch | 10-bit, 13 ch | 10-bit, 13 ch |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
| Operating Temperature | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
关键差异点
- Same 44-pin TQFP pinout as PIC18F4520-I/PT with 8x more Flash headroom （对比 PIC18F4520-I/PT)
- Industrial -40C to +85C rating with nanoWatt sleep below 1 uA （对比 PIC18F4320-I/PT)
- Tape & Reel packaging variant (T-suffix) ready for high-volume SMT lines （对比 PIC18F4220-I/PT)
- Same pinout enables migration to PIC18F46K80-I/PT for AEC-Q100 automotive （对比 PIC18F46K80-I/PT)
设计说明
Estimated: at 40 MHz active, the PIC18F4220T-I/PT core draws roughly 10 mA, plus I/O sink/source current. Place a 100 nF ceramic decoupling capacitor within 5 mm of each VDD pin (the 44-pin TQFP has 4 VDD/VSS pairs at pins 10/11, 20/21, 30/31, 40/41) plus a single 10 uF bulk capacitor on the main supply rail. The nanoWatt sleep modes drop quiescent current below 1 uA but require the core to be in Sleep instruction and selected peripherals disabled.
Keep the 44-pin TQFP thermal pad design rule compatible with JEDEC MS-026: 0.4 mm lead pitch, 0.6 mm pad width, and a ground plane pour under the IC to provide thermal spreading. Estimated: junction-to-ambient thermal resistance is approximately 50 C/W for the TQFP-44 package at 4-layer JEDEC test board, so no heatsink is required even at peak 10 MIPS operation. Maintain 0.2 mm clearance between IC pads and adjacent traces per IPC-2221.
A common mistake is leaving the MCLR pin floating - it MUST be tied to VDD through a 10 kohm resistor for normal operation, or driven by the ICSP programmer during debug. The PGC/PGD pins (RB6/RB7) are shared with digital I/O; ensure external pull resistors do not exceed 10 kohm or ICSP communication will fail. Per Microchip's DS39576, the brown-out reset voltage must be configured below the minimum VDD of 4.2 V to avoid spurious resets at power-up ramp.
Route the crystal traces (OSC1/OSC2, pins 7-8) as short, symmetric traces with a ground guard ring and keep them away from switching signals. For high-speed designs where the 40 MHz oscillator drives EMI-sensitive analog (ADC), isolate the analog VDD/VSS pair with a ferrite bead from the digital supply. Place the ADC reference bypass capacitor (10 uF tantalum plus 100 nF ceramic) within 5 mm of the VREF+ pin (RA3) to minimize reference noise coupling into conversions.
When using the EUSART at 115200 baud or above, keep the TX/RX traces short and add a series 22 ohm resistor near the driver to dampen reflections on cables longer than 100 mm. For SPI clocks above 5 MHz, route SCK with 50 ohm characteristic impedance and a 33 ohm source-termination resistor. I2C buses above 400 kHz Fast-mode require 4.7 kohm pull-ups instead of the 10 kohm used for 100 kHz Standard-mode per Microchip MSSP guidelines.
合规信息
RoHS and REACH compliant per Microchip product page DS39576. Industrial -40C to +85C rating; NOT AEC-Q100 qualified - use PIC18F46K80-I/PT or other Q1 suffix variants for automotive applications. Halogen-free and lead-free per Microchip Green compliance datasheet.