PIC18F2620-I/SP - 8-Bit MCU, 64KB Flash, 40MHz, 28-SPDIP | Microchip
料号： PIC18F2620-I/SP ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.1 | $8.10 |
| 10 | $7.2 | $72.00 |
| 100 | $6.05 | $605.00 |
| 500 | $5.4 | $2,700.00 |
| 1,000 | $4.85 | $4,850.00 |
PIC18F2620-I/SP 概述
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and peripherals such as timers, communication interfaces, and ADCs into a single package. Within the broader taxonomy, an MCU belongs to the microprocessor family -> microcontroller -> 8-bit MCU -> PIC18 family -> PIC18F2x20 sub-family. The PIC18 core is a C-compiler-optimized RISC engine with a single-cycle hardware multiplier and 8x8 hardware multiplier, enabling deterministic instruction execution useful for real-time control loops.
Key features of the PIC18F2620-I/SP include 25 I/O pins, an internal oscillator block supporting 31 kHz to 8 MHz, a Fail-Safe Clock Monitor that allows safe shutdown if the external clock fails, a watchdog timer with its own RC oscillator, and nanoWatt Technology power modes for battery-friendly designs. The 10-bit ADC with up to 10 input channels provides adequate resolution for sensor interfacing, while the ECCP module supports PWM and capture/compare functions for motor-control and lighting applications.
Performance analysis: the PIC18F2620 executes most instructions in one cycle (4 oscillator cycles per instruction), yielding 10 MIPS at the 40 MHz maximum clock. This places the PIC18F2620 between the older PIC16 mid-range MCUs (5 MIPS) and the PIC24/dsPIC 16-bit MCUs (up to 40 MIPS), making it well suited for moderate-throughput industrial control. The internal oscillator eliminates external crystal components in cost-sensitive designs, while the Fail-Safe Clock Monitor preserves system integrity during clock-source failures.
Typical applications include industrial control and embedded automation, motor control (BLDC, stepper, and small DC drives), metering and measurement devices, IoT edge nodes, low-power remote sensor boards, and consumer-electronic user-interface panels. The through-hole 28-SPDIP package simplifies breadboard-based prototyping and field-serviceable designs.
Key design tip: when migrating firmware between PIC18F2620 and PIC18F2525, note that the 2620 variant doubles program Flash and adds peripheral features; verify register maps in the Microchip datasheet family reference manual before porting code. Always place a 100 nF decoupling capacitor within 5 mm of VDD with a short ground return.
This page synthesizes live distributor pricing, drop-in pin-compatible PIC18 alternatives, and practical application notes specifically compiled for engineers evaluating the PIC18F2620-I/SP for new designs or migration from the legacy PIC18F2525/4525/4620 family.
直接替换替代料： PIC18F2620-I/SP ——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： PIC18F2620-I/SP （相同外形与封装尺寸） ——差异在于 Package, ADC, Timers, Program Memory (Flash), Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC18F2620-E/SP
✅ 直接替换✓ 有现货
$8.65 / 个
查看数据手册 →PIC18F2525-I/SP
✅ 直接替换✓ 有现货
$5.45 / 个
查看数据手册 →PIC18F27K40-E/SS
✅ 直接替换✓ 有现货
$1.65 / 个
查看数据手册 →PIC18F24K22-I/SSVAO
✅ 直接替换✓ 有现货
$2.18 / 个
查看数据手册 →PIC18F4685T-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$6.89 / 个
查看数据手册 →PIC18F2620-I/SP 最大额定值与电气特性
| Core Architecture | PIC18 (8-bit RISC, C-optimized) |
| 最大时钟频率 | 40 MHz |
| Instruction Throughput | 10 MIPS (most instructions single-cycle) |
| Program Memory (Flash) | 64 KB (32K x 16 words) |
| Data SRAM | 3968 bytes |
| Data EEPROM | 1024 bytes |
| Supply Voltage Range | 4.2 V to 5.5 V |
| I/O Pins | 25 |
| Analog-to-Digital Converter | 10-bit, up to 10 input channels |
| Timers | 6 (Timer0-Timer5) |
| Communication Interfaces | EUSART, SPI, I2C |
| PWM Modules | ECCP (Enhanced Capture/Compare/PWM) |
| 工作温度范围 | -40C to +85C (Industrial) |
| 封装 | 28-SPDIP (SP) |
| 安装类型 | Through-Hole (DIP) |
| Internal Oscillator | 31 kHz to 8 MHz |
| Power-Saving Modes | nanoWatt Technology (multiple low-power states) |
| RoHS 状态 | Compliant (verify per reel/lot) |
PIC18F2620-I/SP 引脚配置
| 引脚 1 | MCLR/VPP/RE3 — Master Clear (active-low) / Programming Voltage / Port E bit 3 |
| 引脚 2 | RA0/AN0/CVREF — Analog input 0 / Reference voltage output |
| 引脚 3 | RA1/AN1 — Analog input 1 |
| 引脚 4 | RA2/AN2/VREF- — Analog input 2 / ADC VREF- |
| 引脚 5 | RA3/AN3/VREF+ — Analog input 3 / ADC VREF+ |
| 引脚 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| 引脚 7 | RA5/AN4/SS/HLVDIN — Analog input 4 / SPI Slave Select / High/Low-Voltage Detect input |
| 引脚 8 | OSC1/CLKI/RA7 — Crystal input / External clock input |
| 引脚 9 | OSC2/CLKO/RA6 — Crystal output / Clock output (Fosc/4) |
| 引脚 10 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator out / Timer1 clock input |
| 引脚 11 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator in / Capture/Compare/PWM 2 |
| 引脚 12 | RC2/CCP1 — Digital I/O / Capture/Compare/PWM 1 (Enhanced CCP) |
| 引脚 13 | RC3/SCK/SCL — SPI clock / I2C clock |
| 引脚 14 | RC4/SDI/SDA — SPI data in / I2C data |
| 引脚 15 | RC5/SDO — SPI data out |
| 引脚 16 | RC6/TX/CK — EUSART transmit / EUSART clock |
| 引脚 17 | RC7/RX/DT — EUSART receive / EUSART data |
| 引脚 18 | VSS — Ground |
| 引脚 19 | VDD — Positive supply voltage (4.2V to 5.5V) |
| 引脚 20 | RB0/INT0 — External interrupt 0 |
| 引脚 21 | RB1/INT1 — External interrupt 1 |
| 引脚 22 | RB2/INT2 — External interrupt 2 |
| 引脚 23 | RB3/CCP2 — Capture/Compare/PWM 2 |
| 引脚 24 | RB4 — Digital I/O with interrupt-on-change |
| 引脚 25 | RB5/PGM — Digital I/O / Low-voltage ICSP programming |
| 引脚 26 | RB6/PGC — Digital I/O / ICSP Clock |
| 引脚 27 | RB7/PGD — Digital I/O / ICSP Data |
| 引脚 28 | VSS — Ground (secondary ground pin) |
典型应用
PIC18F2620-I/SP 适用于 7 应用s: Industrial Motor Control, IoT Edge Sensor Nodes, Smart Metering and Measurement, Consumer UI Panels, Building Automation and HVAC, Automotive Body Electronics, Embedded Data Logging.
Industrial Motor Control
The PIC18F2620-I/SP is purpose-built for small industrial motor-control designs. Its enhanced ECCP module delivers hardware PWM with dead-band control for half-bridge and H-bridge drive stages, while the 10-bit ADC with up to 10 input channels supports back-EMF sensing, current shunt amplification, and fault feedback. At 10 MIPS, the CPU executes FOC and trapezoidal commutation in under 5 microseconds per loop iteration, enabling 20 kHz+ PWM switching for smooth torque delivery in brushed DC, stepper, and small BLDC motors. The 28-SPDIP package accommodates through-hole manufacturing common in industrial control boards and supports field-replaceable modules.
推荐
IoT Edge Sensor Nodes
The PIC18F2620-I/SP's nanoWatt Technology with multiple low-power modes is ideal for battery-driven IoT edge sensor nodes. The internal 31 kHz to 8 MHz oscillator eliminates external crystal BOM, while the Fail-Safe Clock Monitor and watchdog timer preserve system integrity during clock-source failures. The 64 KB Flash accommodates MQTT-SN or LoRaWAN firmware stacks with diagnostic logs, and the USART/SPI/I2C peripherals interface directly to common radio modules. Operational standby current in the microampere range enables multi-year battery life on lithium thionyl chloride cells (3.6V to 5.5V after regulator).
推荐
Smart Metering and Measurement
The PIC18F2620-I/SP's 10 MIPS throughput and 10-bit ADC make it ideal for utility metering, gas flow measurement, and power-quality monitoring. The 10-bit ADC samples analog signals at rates up to 100 kS/s with multiple input channels - enough for voltage/current sensing and on-board temperature compensation. The 64 KB Flash stores calibration coefficients, monthly usage logs, and communication protocol stacks including Modbus RTU and DLMS/COSEM. The nanoWatt Technology enables 5+ year battery operation in remote gas meter installations where battery replacement is operationally expensive.
推荐
Consumer UI Panels
The PIC18F2620-I/SP drives keypad, LCD, and 7-segment display panels in consumer electronics and appliances. The 25 I/O pins multiplex matrix keypads (up to 5x5) and segment LCDs without external drivers, while the enhanced USART supports Bluetooth/Wi-Fi module connections for smartphone-app control. The 8-bit PIC18 instruction set provides deterministic timing for capacitive touch-sensing algorithms and LED color mixing. Through-hole 28-SPDIP manufacturing accommodates low-cost wave-solder production common in mass-market consumer electronics.
推荐
Building Automation and HVAC
The PIC18F2620-I/SP is well suited for HVAC controllers, smart thermostats, and lighting control panels. The PIC18 core executes PID control loops in real time for variable-speed fan and damper actuators, while the EUSART, SPI, and I2C interfaces interface with temperature/humidity/occupancy sensors, triac dimmers, and 0-10V lighting drivers. The 64 KB Flash stores BACnet or Modbus firmware with multi-day scheduling logs, and the nanoWatt Technology prevents idle-current waste in always-on building systems. Operating temperature range -40C to +85C supports unconditioned equipment-room installations.
推荐
Automotive Body Electronics
The PIC18F2620-I/SP supports non-safety body-electronics modules such as body controllers, seat modules, interior lighting, and accessory multiplexers. The PIC18 instruction set with hardware multiplier enables CAN-like LIN protocol stacks and PWM channel driving. The 28-SPDIP package is well suited to pre-development and reference designs for board bring-up. For production automotive deployments, migrate to PIC18F-K40 AEC-Q100-qualified parts in the same 28-pin SPDIP/SP footprint - the PIN compatibility is preserved within the PIC18 family per the Microchip 28-pin compatibility chart (DS00148J2).
推荐
Embedded Data Logging
The PIC18F2620-I/SP supports portable and remote data loggers combining sensor sampling, time-stamping, and local storage. The 1024-byte data EEPROM and 3968 bytes SRAM provide non-volatile storage for log entries and runtime variables, while the 64 KB Flash stores firmware with FAT12/16 file-system drivers for SD-card interfaces via SPI. The 10-bit ADC reads analog sensors at kHz sampling rates, the USART streams RS-485 sensor buses, and the I2C port interfaces with I2C EEPROM/FRAM storage. The 28-SPDIP package is breadboard-friendly for development, easing initial prototyping and field debugging.
推荐
推荐产品汇总
工程参考数据： PIC18F2620-I/SP ——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 | PIC18F2620-E/SP | PIC18F2525-I/SP | PIC18F27K40-E/SS | PIC18F24K22-I/SSVAO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP (SP) | 28-SPDIP (SP) | 28-SPDIP (SP) | 28-SSOP (SS) - QFN equivalent | 28-SSOP (SS) |
| Program Flash | 64 KB | 64 KB | 32 KB | 128 KB | 16 KB |
| Data SRAM | 3968 bytes | 3968 bytes | 1536 bytes | 3724 bytes | 2048 bytes |
| Maximum Clock | 40 MHz (10 MIPS) | 40 MHz | 40 MHz | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) |
| Operating Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Temperature Range | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C | -40C to +125C | -40C to +125C |
| I/O Pins | 25 | 25 | 25 | 25 | 24 |
| ADC | 10-bit, 10 ch | 10-bit, 10 ch | 10-bit, 8 ch | 12-bit, 14 ch | 10-bit, 19 ch |
关键差异点
- Generous 64 KB Flash for protocol-stack support （对比 PIC18F2525-I/SP)
- 10-bit ADC with 10 input channels for sensor fan-out （对比 PIC18F2525-I/SP)
- Through-hole 28-SPDIP for breadboard and field serviceability （对比 PIC18F27K40-E/SS)
设计说明
Place a single 100 nF X7R ceramic decoupling capacitor within 5 mm of the VDD pin (pin 11) with a wide, short trace to a low-impedance ground via. Add a 10 uF bulk tantalum or aluminum-polymer capacitor adjacent to the IC for transient suppression during PWM switching events. The PIC18F2620 operates from 4.2V to 5.5V; never exceed 5.5V on VDD or the ADC accuracy degrades and Flash programming may fail. For sleep-mode current minimization, switch the ADC off and gate peripheral clocks before issuing the SLEEP instruction.
Route the ICSP pins (RB6/PGC pin 26 and RB7/PGD pin 27) to a 2x3 0.1-inch header compatible with PICkit 5 and MPLAB Snap programmers for in-circuit programming and debugging. Keep traces shorter than 50 mm and isolated from switching power converters. Use a 4-layer PCB with dedicated ground plane beneath the SPDIP footprint for noise immunity; the OSC1/OSC2 lines must be short, symmetric, and surrounded by ground. Place a guard ring around the analog inputs (RA0-RA5) to minimize digital switching noise coupling into ADC measurements.
Always configure the configuration bits to enable the Watchdog Timer with an appropriate postscaler (typically 1:512 for ~1s timeout at 32 kHz). Configure Fail-Safe Clock Monitor if the application relies on the internal oscillator under noisy power conditions, and enable low-voltage programming disable (LVP=OFF) for production builds to free up RB5 as a general-purpose I/O. Do not leave the MCLR pin floating; even with internal weak pull-ups disabled, add an external 10 kohm pull-up to VDD or the MCU may intermittently reset. When migrating firmware from PIC18F2525 (32 KB Flash), ensure code fits the smaller memory map or relocate to PIC18F2620.
合规信息
RoHS compliant per Microchip product environmental documentation. Not AEC-Q100 qualified - for automotive applications migrate to AEC-Q100-qualified parts in the same 28-pin PIC18 family. Conflict-mineral reporting is available from Microchip under the Responsible Minerals Assurance Process.
