PIC18F6622-I/PT - 8-Bit 40MHz 64KB Flash MCU, 70 I/O, TQFP-64 | Microchip
MPN： PIC18F6622-I/PT ✓ 啟用中PIC18F6622-I/PT 概覽
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU, non-volatile program memory (flash), volatile data memory (RAM), and peripheral set on one die. The PIC18F family sits in Microchip's enhanced mid-range hierarchy: PIC10/12/16 baseline -> PIC18 enhanced 8-bit -> PIC24/dsPIC 16-bit -> PIC32 32-bit. Within power management taxonomy, MCUs are classified as embedded controllers inside the broader semiconductor IC family. PIC18F6622-I/PT specifically integrates nanoWatt power-management modes, making it ideal for battery-powered or energy-harvesting designs where idle current dominates.
Key features include 70 I/O pins, 12 channels of 10-bit ADC, two CCP modules, one Enhanced CCP (ECCP), two MSSP (I2C/SPI), two Enhanced USART (LIN-capable), two analog comparators, and a 16-bit timer. It also provides a parallel slave port for external bus expansion and an ICD-friendly in-circuit debug interface. The 64-pin TQFP exposes the full peripheral set with no multiplexing compromises for industrial and consumer designs.
Architecturally, the PIC18F6622-I/PT uses a Harvard RISC core with 16-bit instructions, 8-bit data path, hardware multiply, and a 31-level deep hardware stack. The nanoWatt technology incorporates run, idle, and sleep modes with on-the-fly oscillator switching, supporting currents in the microamp range during sleep with wake-up on interrupt, watchdog, or external events. The flash program memory is self-programmable under firmware control, enabling in-field firmware updates without external programmers.
Typical applications include industrial control panels, HVAC and building automation gateways, automotive LIN sub-net nodes, sensor hubs with multi-serial bridging, USB-to-UART bridges using the parallel slave port, and consumer appliances requiring high pin count with low sleep current. The large RAM and dual synchronous/dual asynchronous serial ports make it well suited to multi-protocol bridging firmware.
When designing with this device, ensure decoupling with 100 nF ceramic capacitors close to each VDD/VSS pair, keep analog and digital grounds separated at the ADC reference, and route the 40 MHz crystal traces short and symmetric for EMI compliance. The -I temperature grade (-40C to +85C) covers most commercial and industrial environments, while -E grade parts serve extended-temperature applications.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 PIC18F6622-I/PT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC18F6622-I/PT （相同外形與佔位） — 差異在於 Package, Core Architecture, Timers, Operating Temperature, Program Memory (Flash).
PIC18F6722-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC18F6622-E/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC18F6527-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC18F6627-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18F6680-I/PT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC18F6622-I/PT 最大額定值與電氣特性
| Core Architecture | PIC18 Enhanced 8-bit RISC |
| Program Memory (Flash) | 64 KB (32K x 16) |
| RAM | 4 KB |
| Data EEPROM | 1 KB |
| Maximum CPU Frequency | 40 MHz |
| 資料匯流排寬度 | 8-bit |
| Operating Voltage (VDD) | 2.0 V to 5.5 V |
| I/O Pins | 70 |
| ADC | 10-bit, 12 channels |
| Timers | 16-bit timers and 8-bit timers (multiple) |
| Communication Interfaces | 2x MSSP (I2C/SPI), 2x EUSART (LIN-capable) |
| CCP / ECCP Modules | 2x CCP + 1x ECCP |
| Analog Comparators | 2 |
| 封裝 | TQFP-64 (PT), 10x10 mm |
| Operating Temperature (I grade) | -40 C to +85 C |
| 安裝類型 | Surface Mount |
| MSL 等級 | 3 (168 hours) |
| RoHS 狀態 | Compliant |
PIC18F6622-I/PT 腳位配置
| 腳位 1 | RG0 — General-purpose I/O / CCP3 |
| 腳位 2 | RG1 — General-purpose I/O / TX2 |
| 腳位 3 | RG2 — General-purpose I/O / RX2 |
| 腳位 4 | RG3 — General-purpose I/O / CCP4 |
| 腳位 5 | RG4 — General-purpose I/O / CCP5 |
| 腳位 6 | MCLR — Master clear reset input (active low) |
| 腳位 7 | OSC1 — Crystal/oscillator input |
| 腳位 8 | OSC2 — Crystal/oscillator output |
| 腳位 9 | RA0 — Analog input AN0 / CVref |
| 腳位 10 | RA1 — Analog input AN1 |
| 腳位 11 | RA2 — Analog input AN2 / Vref- |
| 腳位 12 | RA3 — Analog input AN3 / Vref+ |
| 腳位 13 | RA4 — Digital I/O / T0CKI |
| 腳位 14 | RA5 — Digital I/O / AN4 / HLVDIN |
| 腳位 15 | RA6 — Digital I/O / OSC1 alt |
| 腳位 16 | RA7 — Digital I/O / OSC2 alt |
| 腳位 17 | VSS — Ground |
| 腳位 18 | VDD — Positive supply voltage |
| 腳位 19 | RB0 — Digital I/O / INT0 / AN12 |
| 腳位 20 | RB1 — Digital I/O / INT1 / AN10 |
| 腳位 21 | RB2 — Digital I/O / INT2 / AN8 |
| 腳位 22 | RB3 — Digital I/O / INT3 / AN9 / CCP2 |
| 腳位 23 | RB4 — Digital I/O / AN11 |
| 腳位 24 | RB5 — Digital I/O / AN13 / CCP3 |
| 腳位 25 | RB6 — Digital I/O / PGC (ICD clock) |
| 腳位 26 | RB7 — Digital I/O / PGD (ICD data) |
| 腳位 27 | RC0 — Digital I/O / T1OSO / T13CKI |
| 腳位 28 | RC1 — Digital I/O / T1OSI / CCP2 |
| 腳位 29 | RC2 — Digital I/O / CCP1 |
| 腳位 30 | RC3 — Digital I/O / SCL1 / SCK1 |
| 腳位 31 | RC4 — Digital I/O / SDA1 / SDI1 |
| 腳位 32 | RC5 — Digital I/O / SDO1 |
| 腳位 33 | RC6 — Digital I/O / TX1 / CK1 |
| 腳位 34 | RC7 — Digital I/O / RX1 / DT1 |
| 腳位 35 | VSS — Ground |
| 腳位 36 | VDD — Positive supply voltage |
| 腳位 37 | RD0 — Digital I/O / PSP0 |
| 腳位 38 | RD1 — Digital I/O / PSP1 |
| 腳位 39 | RD2 — Digital I/O / PSP2 |
| 腳位 40 | RD3 — Digital I/O / PSP3 |
| 腳位 41 | RD4 — Digital I/O / PSP4 / SDO2 |
| 腳位 42 | RD5 — Digital I/O / PSP5 / SDI2 / SDA2 |
| 腳位 43 | RD6 — Digital I/O / PSP6 / SCK2 / SCL2 |
| 腳位 44 | RD7 — Digital I/O / PSP7 / SS2 |
| 腳位 45 | VSS — Ground |
| 腳位 46 | VDD — Positive supply voltage |
| 腳位 47 | RE0 — Digital I/O / AN5 / RD |
| 腳位 48 | RE1 — Digital I/O / AN6 / WR |
| 腳位 49 | RE2 — Digital I/O / AN7 / CS |
| 腳位 50 | RE3 — Digital I/O / RD (alt) |
| 腳位 51 | RE4 — Digital I/O |
| 腳位 52 | RE5 — Digital I/O |
| 腳位 53 | RE6 — Digital I/O |
| 腳位 54 | RE7 — Digital I/O / CCP2 |
| 腳位 55 | RF0 — Digital I/O / AN16 |
| 腳位 56 | RF1 — Digital I/O / AN6 / C2OUT |
| 腳位 57 | RF2 — Digital I/O / AN7 / C1OUT |
| 腳位 58 | RF3 — Digital I/O / AN8 |
| 腳位 59 | RF4 — Digital I/O / AN9 |
| 腳位 60 | RF5 — Digital I/O / AN10 / C2IN- |
| 腳位 61 | RF6 — Digital I/O / AN11 / C1IN- |
| 腳位 62 | RF7 — Digital I/O / AN5 / SS1 |
| 腳位 63 | VSS — Ground |
| 腳位 64 | VDD — Positive supply voltage |
典型應用
PIC18F6622-I/PT 適用於 6 應用s: Industrial Control Panels, HVAC and Building Automation Gateways, Automotive LIN Sub-Net Nodes, USB-to-UART Bridge with Parallel Slave Port, Multi-Sensor Hubs with Protocol Bridging, Consumer Appliance Controllers.
Industrial Control Panels
The PIC18F6622-I/PT is well suited to industrial control panels where 70 I/O pins drive keypad scanning, LED matrix displays, relay banks, and multiple sensor inputs. The 40 MHz CPU and 64 KB flash comfortably run Modbus RTU masters, PID control loops, and human-machine interface (HMI) state machines. Two EUSARTs allow simultaneous RS-485 master/slave bridging, while 12 ADC channels sample analog sensors without external muxes. The -40C to +85C industrial temperature range covers factory floor environments, and nanoWatt sleep modes cut power between operator interactions.
推薦
HVAC and Building Automation Gateways
The PIC18F6622-I/PT serves as a multi-protocol gateway in HVAC and building automation, bridging BACnet MS-TP, Modbus, and LIN sub-nets through its two EUSARTs and two MSSP peripherals. The 4 KB RAM buffers telemetry packets while 64 KB flash stores protocol stacks, scheduling logic, and OTA bootloader. nanoWatt sleep modes with interrupt wake-up let the gateway idle between sensor polls, cutting power consumption below 10 uA in standby. The wide 2.0-5.5 V VDD range accepts 24V-derived rails after regulation, and the 10-bit ADC reads thermistor/resistive sensor inputs directly.
推薦
Automotive LIN Sub-Net Nodes
The PIC18F6622-I/PT integrates LIN-capable Enhanced USART peripherals, making it suitable for automotive body-electronics LIN sub-net nodes controlling window lifters, mirror adjusters, seat controllers, and ambient lighting. The 70 I/O pins drive H-bridge drivers and LED PWM channels through the ECCP module, while the 12-channel 10-bit ADC reads position feedback and current sense. Per the Microchip datasheet, the LIN peripheral supports auto-baud detection and full LIN 1.3/2.0/2.1 compliance. Note that the I-grade temperature rating (-40C to +85C) suits cabin modules; under-hood applications should select the E-grade variant.
推薦
USB-to-UART Bridge with Parallel Slave Port
The PIC18F6622-I/PT exposes a parallel slave port (PSP) that, combined with an external USB-to-parallel chip like the MCP2210, creates a high-throughput USB-to-UART/I2C/SPI bridge for legacy industrial equipment. The 40 MHz CPU handles USB enumeration and protocol translation without bottlenecks, while 64 KB flash stores HID or CDC class descriptors plus custom command sets. The dual EUSART supports two independent UART channels simultaneously, useful for debugging two serial buses through a single USB port. The nanoWatt sleep mode enables USB suspend compliance with <2.5 mA device current.
推薦
Multi-Sensor Hubs with Protocol Bridging
The PIC18F6622-I/PT excels as a multi-sensor hub reading I2C sensors through MSSP, SPI devices through the second MSSP, and forwarding data over UART or back to a host MCU. The 4 KB RAM caches sensor fusion state, while the 12-channel 10-bit ADC monitors analog sensors in parallel. The 40 MHz CPU runs sensor fusion algorithms at 100 Hz while maintaining serial responsiveness. nanoWatt sleep modes with wake-on-interrupt let the hub idle between sensor reads, extending battery life in wireless sensor nodes.
推薦
Consumer Appliance Controllers
The PIC18F6622-I/PT drives consumer appliances such as washing machines, dishwashers, and coffee machines where 70 I/O pins interface with keypads, displays, motor drivers, and water level sensors. The ECCP module generates PWM for motor speed control, while the 12-channel ADC monitors temperature, turbidity, and load weight. The 64 KB flash stores appliance firmware with multi-language UI strings, and 4 KB RAM buffers display refresh and motor state. The wide 2.0-5.5 V VDD accepts regulated supplies from universal mains adapters, and nanoWatt modes drop standby power below energy-star limits.
推薦
推薦產品摘要
工程參考資料，適用於 PIC18F6622-I/PT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC18F6722-I/PT | PIC18F6622-E/PT | PIC18F6527-I/PT | PIC18F6627-I/PT | PIC18F6680-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same |
| Program Flash | 64 KB | 128 KB | 64 KB | 48 KB | 96 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Maximum CPU Frequency | 40 MHz | 40 MHz | 25 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Temperature Grade | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| I/O Pins | 70 | 70 | 70 | 70 | 70 | 70 |
| CAN Module | No | No | No | No | No | Yes |
| Price (qty-1, USD) | $8.20 | $9.50 | $8.95 | $7.40 | $8.80 | $9.10 |
主要差異化特點
- Dual MSSP + dual EUSART (LIN-capable) for four serial ports (對比PIC18F6527-I/PT)
- Larger flash headroom at the same price tier (對比PIC18F6527-I/PT)
- Industrial temperature grade with extended flash variants available (對比PIC18F6722-I/PT)
設計說明
The PIC18F6622-I/PT operates from 2.0 V to 5.5 V at up to 40 MHz. Place a 100 nF decoupling capacitor within 5 mm of each VDD/VSS pair (pins 18/17, 36/35, 46/45, 64/63); add a bulk 10 uF tantalum or ceramic near the IC. For battery-powered designs, the nanoWatt sleep mode drops current below 1 uA typical with RTCC running - per the Microchip datasheet, use the on-the-fly oscillator switch to wake on interrupt without external circuitry.
Route the 40 MHz crystal traces (OSC1/OSC2, pins 7-8) within 5 mm of the MCU, symmetric and short with a ground guard ring. Keep analog traces (RA0-RA7, RF0-RF7, RE0-RE7) away from digital switching signals to minimize ADC crosstalk; if using the 12-channel 10-bit ADC for sub-LSB precision, place a 100 nF cap on Vref+ and use a separate analog ground island joined at one point. The PGC/PGD ICD pins (RB6/RB7) must be accessible for in-circuit debugging - do not place series resistors above 100 ohm.
Do not drive MCLR (pin 6) directly to VDD without a 10 kohm pull-up; a noisy reset line causes spurious restarts. When using the parallel slave port (RD0-RD7, RE0-RE2), the PSP control lines must be configured as digital I/O - leaving them as analog inputs disables PSP operation. The I grade temperature rating (-40C to +85C) is industrial range; do not specify this part for under-hood automotive without the E grade variant. Always configure unused I/O as outputs low to minimize sleep current.
合規資訊
RoHS and REACH compliant per Microchip product page; lead-free and halogen-free per datasheet. Not AEC-Q100 qualified; for automotive applications requiring AEC-Q100, consult Microchip for the PIC18F6622-I/PT automotive-grade equivalent. The I grade temperature range (-40C to +85C) covers industrial environments; select E grade parts for extended-temperature designs.