PIC18F4620-E/P - 8-bit MCU 64KB Flash 40MHz 40-DIP | Microchip
MPN: PIC18F4620-E/P ✓ Hoạt độngPIC18F4620-E/P Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, Flash program memory, RAM, EEPROM, and a rich set of peripherals (ADC, timers, UART, SPI, I2C, PWM, I/O) into one IC. PIC microcontrollers sit in the 8-bit MCU family alongside 8051, AVR, and STM8; their hypernym chain is PIC -> 8-bit MCU -> microcontroller -> embedded controller -> semiconductor. PIC18 is the "enhanced" 8-bit tier that adds a hardware multiplier, 16-bit instructions, and nanoWatt power management compared with baseline PIC16 cores.
Key features include a 10-bit ADC with up to 13 input channels, two analog comparators, a 10 MHz internal RC oscillator, four timers, a 5-bit CCP/PWM module, MSSP for SPI/I2C, two USARTs (with LIN support), nanoWatt sleep modes, and 36 digital I/O pins. The PIC18F4620 also provides a 14-bit instruction word, hardware multiply, C-compiler-friendly architecture, and In-Circuit Serial Programming (ICSP) plus In-Circuit Debug (ICD).
Typical applications include industrial control panels, HVAC thermostats, sensor-conditioning nodes, USB-class bridges (with PIC18F4550/4553 family), automotive body modules (sub-meter), home-automation controllers, and consumer appliances. The wide 5V supply range suits 5V industrial buses (LIN, RS-485, CAN via external transceiver) where 3.3V MCUs require level shifters.
When designing with this part, note the "-E" suffix indicates the extended -40C to +125C industrial temperature grade, while "-I" is -40C to +85C industrial and no suffix is 0C to +70C commercial. The 40-pin PDIP footprint is the same as PIC18F4520, PIC18F4523, PIC18F4525, and PIC18F4610, enabling direct PCB reuse across the family.
This page synthesizes distributor stock, drop-in PIC18-family alternatives, application guidance, and design notes not consolidated in any single manufacturer document.
Bộ thay thế dễ dàng lắp đặt cho PIC18F4620-E/P — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F4620-E/P (cùng hình factor và footprint) — khác nhau ở Timers, Operating Temperature, Program Memory (Flash), Package, Core.
PIC18F4620-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F4520-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F4610-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F4525-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F45K22-E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F4580-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F4620-E/P Tỷ lệ tối đa & tính chất điện
| Core | PIC18 (enhanced 8-bit) |
| Instruction Set Architecture | 8-bit data, 16-bit instructions, RISC |
| Program Memory (Flash) | 64 KB |
| RAM | 3968 bytes |
| EEPROM | 1024 bytes |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| Nhiệt độ hoạt động | -40C to +125C (E suffix - extended) |
| I/O Pins | 36 |
| ADC | 10-bit, up to 13 channels |
| Timers | 4 (Timer0/1/2/3) |
| Capture/Compare/PWM | 1 ECCP + 1 CCP module |
| Serial Interfaces | MSSP (SPI/I2C), 2x USART (LIN) |
| Analog Comparators | 2 |
| Hộp | 40-pin PDIP (P) |
| Kiểu lắp đặt | Through-Hole (DIP) |
| Cấp MSL | 1 (unlimited floor life) |
| Programming/Debug | ICSP, ICD |
| Internal Oscillator | 8 MHz / 32 kHz secondary (nanoWatt) |
Cấu hình chân PIC18F4620-E/P
| Chân 1 | MCLR/VPP/RE3 — Reset input / programming voltage / Port E bit 3 |
| Chân 2 | RA0/AN0 — Port A bit 0 / ADC input 0 |
| Chân 3 | RA1/AN1 — Port A bit 1 / ADC input 1 |
| Chân 4 | RA2/AN2/VREF- — Port A bit 2 / ADC input 2 / ADC reference negative |
| Chân 5 | RA3/AN3/VREF+ — Port A bit 3 / ADC input 3 / ADC reference positive |
| Chân 6 | RA4/T0CKI/C1OUT — Port A bit 4 / Timer0 clock input / Comparator 1 output |
| Chân 7 | RA5/AN4/SS/HLVDIN/C2OUT — Port A bit 5 / ADC input 4 / SPI slave select / HLVD input / Comparator 2 output |
| Chân 8 | RE0/RD/AN5 — Port E bit 0 / Parallel Slave Port read / ADC input 5 |
| Chân 9 | RE1/WR/AN6 — Port E bit 1 / Parallel Slave Port write / ADC input 6 |
| Chân 10 | RE2/CS/AN7 — Port E bit 2 / Parallel Slave Port chip select / ADC input 7 |
| Chân 11 | VDD — Positive supply voltage |
| Chân 12 | VSS — Ground reference |
| Chân 13 | OSC1/CLKI/RA7 — Oscillator input / external clock input / Port A bit 7 |
| Chân 14 | OSC2/CLKO/RA6 — Oscillator output / clock output / Port A bit 6 |
| Chân 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / Capture-Compare-PWM 2 |
| Chân 17 | RC2/CCP1 — Port C bit 2 / Capture-Compare-PWM 1 |
| Chân 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Chân 19 | RD0/PSP0 — Port D bit 0 / Parallel Slave Port data bit 0 |
| Chân 20 | RD1/PSP1 — Port D bit 1 / Parallel Slave Port data bit 1 |
| Chân 21 | RD2/PSP2 — Port D bit 2 / Parallel Slave Port data bit 2 |
| Chân 22 | RD3/PSP3 — Port D bit 3 / Parallel Slave Port data bit 3 |
| Chân 23 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Chân 24 | RC5/SDO — Port C bit 5 / SPI data out |
| Chân 25 | RC6/TX/CK — Port C bit 6 / USART transmit / USART clock |
| Chân 26 | RC7/RX/DT — Port C bit 7 / USART receive / USART data |
| Chân 27 | RD4/PSP4 — Port D bit 4 / Parallel Slave Port data bit 4 |
| Chân 28 | RD5/PSP5 — Port D bit 5 / Parallel Slave Port data bit 5 |
| Chân 29 | RD6/PSP6 — Port D bit 6 / Parallel Slave Port data bit 6 |
| Chân 30 | RD7/PSP7 — Port D bit 7 / Parallel Slave Port data bit 7 |
| Chân 31 | VSS — Ground reference |
| Chân 32 | VDD — Positive supply voltage |
| Chân 33 | RB0/AN12/INT0 — Port B bit 0 / ADC input 12 / External interrupt 0 |
| Chân 34 | RB1/AN10/INT1 — Port B bit 1 / ADC input 10 / External interrupt 1 |
| Chân 35 | RB2/AN8/INT2 — Port B bit 2 / ADC input 8 / External interrupt 2 |
| Chân 36 | RB3/AN9/CCP2 — Port B bit 3 / ADC input 9 / Capture-Compare-PWM 2 (alternate) |
| Chân 37 | RB4/AN11/KBI0 — Port B bit 4 / ADC input 11 / Interrupt-on-change bit 0 |
| Chân 38 | RB5/KBI1/PGM — Port B bit 5 / Interrupt-on-change bit 1 / LVP programming |
| Chân 39 | RB6/KBI2/PGC — Port B bit 6 / Interrupt-on-change bit 2 / ICSP clock |
| Chân 40 | RB7/KBI3/PGD — Port B bit 7 / Interrupt-on-change bit 3 / ICSP data |
Ứng dụng tiêu biểu
PIC18F4620-E/P phù hợp cho 7 Áp dụngs: Industrial Control Panels, HVAC Thermostat Controllers, Sensor Conditioning Nodes, Automotive Body Modules (Sub-Meter), Home Automation Controllers, USB Device Class Bridges (Migration Path), Consumer Appliance Control Boards.
Industrial Control Panels
The PIC18F4620-E/P suits industrial control panels where 5V-tolerant I/O, wide temperature operation, and abundant peripherals reduce BOM cost. Its 36 digital I/O pins drive relays, optocouplers, and discrete LEDs directly without level shifters, while the 10-bit ADC with 13 channels reads 4-20 mA loop-back voltages, thermistor dividers, and 0-10V analog sensor outputs. The PIC18 enhanced core's hardware multiplier accelerates closed-loop PID for motor starters and pump controllers at a fraction of the cost of an ARM M0.
Được đề xuất
HVAC Thermostat Controllers
The PIC18F4620-E/P's nanoWatt sleep modes and 10-bit ADC are well-matched to HVAC thermostat designs that must read NTC thermistors, run PID on temperature, drive triacs for compressor and fan control, and survive -40C attic temperatures. With 64 KB Flash the MCU holds full-color LCD menus, scheduling firmware, and Modbus/RTU stack simultaneously. The two analog comparators support zero-cross detection for triac dimming of indicator LEDs without external circuitry.
Được đề xuất
Sensor Conditioning Nodes
In wireless or wired sensor nodes the PIC18F4620-E/P provides analog signal conditioning, local decision logic, and serial backhaul via USART or MSSP SPI. Its 13 ADC channels handle multi-sensor inputs (load cell + temperature + humidity) at 10-bit resolution, while the nanoWatt idle mode drops quiescent draw below typical sleep current of competing radios. Designers pair it with MRF24J40 2.4 GHz transceivers or RN2483 LoRaWAN modules via the MSSP/SPI port.
Được đề xuất
Automotive Body Modules (Sub-Meter)
Although not AEC-Q100 qualified itself, the PIC18F4620-E/P's -40C to +125C extended temperature grade suits cabin-mounted body controllers for window lifts, mirror adjusters, seat controllers, and aftermarket alarm modules. The LIN-capable USART interfaces directly to LIN bus transceivers like MCP2003, while PWM channels drive LED ambient lighting and motor H-bridge drivers. The 40-pin PDIP package aids aftermarket repair shops that prefer through-hole for serviceability.
Được đề xuất
Home Automation Controllers
The PIC18F4620-E/P integrates well into home-automation hubs and sub-controllers that bridge 5V legacy peripherals (relays, dimmers, 1-Wire sensors) with 3.3V wireless modules. Its dual USART allows simultaneous connections to an ESP8266/ESP32 Wi-Fi bridge and an RS-485 Modbus sensor bus. The 64 KB Flash holds full Z-Wave/Zigbee translation tables or DALI lighting protocols for residential LED control.
Được đề xuất
USB Device Class Bridges (Migration Path)
Although the PIC18F4620 lacks an integrated USB peripheral, it serves as a stepping stone in product lines that bridge RS-232 to USB via the PIC18F2550/4550 family. The shared PIC18 instruction set means firmware can be ported between the 4620 (for non-USB products) and the 4550 (for USB products) with minimal code changes. Designers use PIC18F4620-E/P in the non-USB variant of a product family to reuse drivers, math libraries, and bootloaders.
Được đề xuất
Consumer Appliance Control Boards
The PIC18F4620-E/P's 5V native I/O and extended temperature grade fit washing-machine, dishwasher, and microwave control boards where cost matters more than USB connectivity. Its 36 I/O drive seven-segment displays, keypads, buzzer, triac optocouplers, and door-latch sensors directly. The 64 KB Flash holds cycle-program state machines and self-test firmware for factory burn-in, while the 10-bit ADC reads water level and motor current sensors.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F4620-E/P — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18F4620-I/P | PIC18F4520-I/P | PIC18F4610-I/P | PIC18F4525-I/P | PIC18F45K22-E/P | PIC18F4580-I/P |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin PDIP | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same |
| Flash Memory | 64 KB | 64 KB | 32 KB (-50%) | 32 KB (-50%) | 48 KB (-25%) | 32 KB (-50%) | 32 KB (-50%) |
| RAM | 3968 bytes | 3968 bytes | 1536 bytes (-61%) | 2048 bytes (-48%) | 3968 bytes | 1536 bytes (-61%) | 2048 bytes (-48%) |
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 12-bit (better) | 10-bit |
| CAN Peripheral | No | No | No | No | No | No | Yes (CAN) |
| USB Peripheral | No | No | No | No | No | No | No |
| Maximum Clock | 40 MHz (10 MIPS) | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 64 MHz (16 MIPS - faster) | 40 MHz |
Bảo phân biệt quan trọng
- Extended -40C to +125C temperature grade vs standard -40C to +85C industrial (vsPIC18F4620-I/P)
- 64 KB Flash and 3968 bytes RAM in a 40-pin PDIP (vsPIC18F4520-I/P)
- No CAN peripheral vs integrated CAN on PIC18F4580 (vsPIC18F4580-I/P)
- Direct migration path to 12-bit ADC and 64 MHz PIC18F46K22 (vsPIC18F45K22-E/P)
Ghi chú thiết kế
The PIC18F4620-E/P's nanoWatt technology provides several sleep modes (Sleep, Idle, and a deep "nanoWatt" mode with RTCC) that drop current below 1 uA typical with the Timer1 oscillator running and below 100 nA in full sleep. For battery-powered designs, gate the analog peripherals off before sleep (clear ADCON1.ADON) to eliminate ADC bias current, and use the internal 31 kHz LFINTOSC for low-power timekeeping rather than an external crystal.
Decouple VDD/VSS pairs with 100 nF ceramic capacitors placed within 5 mm of each power pin pair (pins 11/12 and 31/32). Add a 10 uF bulk capacitor at the board's power-entry point. For analog accuracy, route AVdd/AVss to the same VDD/VSS net via ferrite beads if your design separates analog and digital grounds - otherwise tie them together at the MCU. Keep ADC traces short and away from PWM/CCP outputs to minimize digital coupling into the analog inputs.
Do not assume all PIC18F46xx variants have the same Flash size; the PIC18F4520 and PIC18F4610 have only 32 KB. Mismatching variants is a leading cause of "memory overflow" during firmware bring-up. Second, the MCLR pin (pin 1) must not float - tie it to VDD through a 10 kohm resistor for normal operation or to the ICSP programmer's VPP line during programming. Third, RB5 doubles as the LVP programming pin - if you pull RB5 low at power-on you will inadvertently enter Low-Voltage Programming mode; add a weak pull-up or buffer.
At 40 MHz and 5V, the PIC18F4620-E/P draws approximately 25 mA active and 50 nA sleep. The 40-pin PDIP package has a theta_JA of roughly 50 C/W in still air, so worst-case active power dissipation of 125 mW yields a 6C junction temperature rise - well within thermal limits. However, ensure the analog VREF input current (pin 5) does not exceed the datasheet's 10 mA limit, or accuracy will degrade.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. NOT AEC-Q100 qualified - the -E suffix denotes -40C to +125C extended industrial temperature only, not automotive certification. For AEC-Q100 applications use PIC18F46K22-I/P family instead.
