PIC16C620A-40/SO - 8-Bit 40MHz OTP MCU, 18-SOIC | Microchip
料号： PIC16C620A-40/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.62 | $3.62 |
| 10 | $3.21 | $32.10 |
| 100 | $2.78 | $278.00 |
| 500 | $2.4 | $1,200.00 |
| 1,000 | $2.05 | $2,050.00 |
PIC16C620A-40/SO 概述
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory (ROM/EPROM/Flash), and peripherals into one package. The PIC16C620A belongs to the PIC16C family of CMOS, fully-static, OTP-based MCUs that execute one instruction per clock cycle using Microchip's RISC architecture. This makes PIC16C620A part of the broader hierarchy: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC. OTP memory allows the device to be programmed once during manufacturing or in-circuit, suiting cost-sensitive production where firmware is fixed.
Key features include 35 single-word instructions (most single-cycle, 200 ns at 20 MHz / 100 ns at 40 MHz), a Harvard architecture with separate program and data buses, and an external oscillator interface. The brown-out detect/reset (BOR), power-on reset (POR), and watchdog timer (WDT) provide robust operation in electrically noisy industrial environments. The CMOS design minimizes power consumption, with low standby current ideal for battery-powered or sleep-mode applications.
The PIC16C620A-40/SO uses a 14-bit instruction word and 8-bit data path, balancing code density and ease of programming. Compared with its predecessor PIC16C620, the A-revision improved electrical specifications and is a recommended functional upgrade. Program memory is OTP, meaning each unit can be written only once; this suits production runs where firmware is finalized.
Typical applications include appliance control, sensor interfacing, industrial automation, automotive body electronics (non-safety), and low-cost consumer devices. The 13 I/O lines comfortably handle key matrices, LEDs, and serial interfaces. The wide 2.5 V to 5.5 V supply range allows operation from regulated 3.3 V or 5 V rails. The external oscillator supports crystals, resonators, or clock sources up to 40 MHz.
When designing with this part, remember OTP memory cannot be reprogrammed, so use a Flash equivalent (e.g., PIC16F630-I/SL) during development. Decoupling capacitors (100 nF) must be placed close to VDD/VSS, and unused I/O pins should be configured as outputs to minimize current consumption.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Information is current as of 2026-09-17.
直接替换替代料： PIC16C620A-40/SO ——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： PIC16C620A-40/SO （相同外形与封装尺寸） ——差异在于 Package, RoHS Status, Operating Temperature, Core Architecture, Maximum Clock Frequency.
快速对比工具——选择替代料号进行并排对比：
PIC16F630-I/SL
✅ 直接替换✓ 有现货
$0.65 / 个
查看数据手册 →PIC16F676-I/SL
✅ 直接替换✓ 有现货
$0.97 / 个
查看数据手册 →PIC16C620A-04/SO
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.62 / 个
查看数据手册 →PIC16C620A-40/SO 最大额定值与电气特性
| Core Processor | PIC |
| Core Size | 8-Bit |
| 最大时钟频率 | 40 MHz |
| Program Memory Size | 896 B (512 x 14) |
| Program Memory Type | OTP |
| RAM Size | 96 B |
| EEPROM Size | None |
| Number of I/O Pins | 13 |
| Supply Voltage (Vcc/Vdd) | 2.5 V to 5.5 V |
| 工作温度 | 0C to +70C (commercial) |
| Oscillator Type | External |
| Peripherals | Brown-out Detect/Reset, POR, WDT |
| Connectivity | - |
| Data Converters | - |
| Instruction Set | 35 single-word instructions |
| Architecture | RISC, Harvard |
| 封装 | 18-SOIC (0.295", 7.50 mm width) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Non-compliant (OTP windowed/legacy family) |
PIC16C620A-40/SO 引脚配置
| 引脚 1 | RA2 — Bidirectional I/O, also analog comparator reference |
| 引脚 2 | RA3 — Bidirectional I/O |
| 引脚 3 | RA4/T0CKI — Bidirectional I/O / Timer0 clock input |
| 引脚 4 | /MCLR — Master Clear (reset, active-low) |
| 引脚 5 | VSS — Ground |
| 引脚 6 | RB0/INT — Bidirectional I/O / external interrupt |
| 引脚 7 | RB1 — Bidirectional I/O |
| 引脚 8 | RB2 — Bidirectional I/O |
| 引脚 9 | RB3 — Bidirectional I/O |
| 引脚 10 | RB4 — Bidirectional I/O (interrupt-on-change) |
| 引脚 11 | RB5 — Bidirectional I/O (interrupt-on-change) |
| 引脚 12 | RB6 — Bidirectional I/O (interrupt-on-change, ICSP clock) |
| 引脚 13 | RB7 — Bidirectional I/O (interrupt-on-change, ICSP data) |
| 引脚 14 | VDD — Positive supply voltage |
| 引脚 15 | OSC2/CLKOUT — Oscillator output / clock out |
| 引脚 16 | OSC1/CLKIN — Oscillator input / external clock in |
| 引脚 17 | RA0 — Bidirectional I/O / analog comparator input |
| 引脚 18 | RA1 — Bidirectional I/O / analog comparator input |
典型应用
PIC16C620A-40/SO 适用于 6 应用s: Appliance Control (White Goods), Industrial Sensor Interface, Automotive Body Electronics (Non-Safety), Low-Cost Consumer Electronics, LED Display Drivers / Chasing Effects, Battery-Powered Sensor Nodes.
Appliance Control (White Goods)
The PIC16C620A-40/SO suits appliance control boards where firmware is fixed at production. With 13 digital I/O lines, the MCU can directly drive relays, indicator LEDs, keypads, and seven-segment displays without external glue logic. The 40 MHz CPU provides ample headroom for state-machine control of motors, valves, and heaters with sub-millisecond timing resolution. The wide 2.5-5.5 V supply accepts unregulated 5 V rails from rectified mains transformers. Brown-out detect and watchdog timer ensure safe recovery from brown-out or ESD events on noisy AC-line-derived power. Compared with modern 32-bit alternatives, the OTP-based /16C620A is preferred in mature designs with stable firmware, lowering unit cost versus Flash parts. Engineers should plan for OTP programming as a one-time event during board-level testing.
推荐
Industrial Sensor Interface
The PIC16C620A-40/SO is well-suited to industrial sensor interface modules where 4-20 mA loop transmitters, switch contacts, or digital sensors must be read and processed locally. Its 13 digital I/O ports accommodate multi-channel discrete inputs, while the 35-instruction RISC core executes deterministic control code for sensor linearization and threshold detection. The 40 MHz clock supports sampling rates up to several kHz for software-filtered sensor reads. Brown-out reset prevents false triggers during supply droop on long industrial cables. Watchdog timer recovers the MCU from lockup caused by EMI on factory floors. Compared with newer Cortex-M0 alternatives, the /16C620A offers lower cost and lower power for fixed-function sensor modules. OTP memory protects proprietary calibration algorithms from external read-back, supporting IP protection for OEM customers.
推荐
Automotive Body Electronics (Non-Safety)
For non-safety automotive body electronics such as lighting controllers, seat adjusters, or wiper timers, the PIC16C620A-40/SO provides a cost-effective solution. Its commercial 0-70C temperature range suits cabin-mounted modules; for under-hood AEC-Q100 applications a different part is required. The 13 I/O lines handle multiple LED drivers, switches, and relay coils with PWM via software bit-banging. Brown-out reset handles cranking-voltage dips down to 6 V on a 12 V battery. Watchdog timer resets the MCU if code execution stalls due to load-dump transients. Compared with newer automotive-grade MCUs, the /16C620A is favored in cost-sensitive non-safety subsystems. OTP memory locks the calibration data per vehicle variant, ensuring consistent behavior across the production fleet.
推荐
Low-Cost Consumer Electronics
The PIC16C620A-40/SO is widely used in low-cost consumer electronics such as toys, remote controls, and small kitchen appliances. Its 13 I/O ports easily drive IR LEDs, button matrices, piezo buzzers, and status LEDs without external drivers. The 2.5-5.5 V supply range supports 2x AA battery packs with low-battery detection via brown-out reset. OTP prevents firmware cloning, protecting IP for branded consumer products. The 40 MHz CPU handles RC5/RC6/SIRC IR protocol encoding/decoding in real-time with low software overhead. Compared with newer ARM Cortex-M0+ MCUs, the /16C620A keeps BOM cost minimal for high-volume consumer goods. Designers should plan for OTP programming as a one-time factory event; use PIC16F630-I/SL during prototyping.
推荐
LED Display Drivers / Chasing Effects
The PIC16C620A-40/SO excels at LED chasing, marquee, and decoration light controllers. With 13 I/O ports, it directly drives up to 13 LED channels via PWM bit-banging, or multiplexes larger LED matrices with external transistors. The 40 MHz clock provides precise PWM control with resolution below 1 microsecond, enabling smooth fade and color-mixing transitions. Brown-out reset prevents incomplete patterns during power glitches. Watchdog timer recovers from firmware lockup. Compared with dedicated LED driver ICs, the /16C620A adds programmability for custom animation sequences. OTP memory locks the show patterns per product SKU, ensuring the visual identity of branded lighting products cannot be modified post-production.
推荐
Battery-Powered Sensor Nodes
The PIC16C620A-40/SO suits battery-powered sensor nodes where power consumption must be minimized and firmware is fixed. Its CMOS design achieves microamp-level standby current via sleep modes with watchdog timer wake-up. The 2.5-5.5 V supply range accepts 2xAA, CR2032, or rechargeable Li-ion cells. Brown-out detect provides clean low-battery shutdown to protect battery cells from over-discharge. With 13 digital I/O, the MCU interfaces to multiple sensors, a UART debug port, and a low-power RF module. Compared with newer low-power ARM MCUs, the /16C620A offers simpler sleep-wake semantics with minimal firmware overhead. OTP locks the calibration data into each node, ensuring consistent measurement accuracy across the deployed fleet.
推荐
推荐产品汇总
工程参考数据： PIC16C620A-40/SO ——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 | PIC16F630-I/SL | PIC16F676-I/SL | PIC16C620A-04/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC (0.295", 7.50 mm) | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) |
| Core / Architecture | PIC 8-bit RISC | PIC 8-bit RISC | PIC 8-bit RISC | PIC 8-bit RISC |
| Max Clock Frequency | 40 MHz | 20 MHz | 20 MHz | 4 MHz |
| Program Memory | 896 B OTP (512 x 14) | 1024 B Flash | 1024 B Flash | 896 B OTP |
| RAM Size | 96 B | 64 B | 64 B | 96 B |
| Number of I/O | 13 | 12 | 12 | 13 |
| Supply Voltage | 2.5 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.5 V to 5.5 V |
| RoHS Compliance | Non-compliant (legacy OTP) | RoHS compliant | RoHS compliant | Non-compliant |
关键差异点
- High 40 MHz clock versus Flash alternatives （对比 PIC16F630-I/SL)
- OTP-based code protection （对比 PIC16F630-I/SL)
- Same 18-SOIC pinout and code-compatible （对比 PIC16F676-I/SL)
设计说明
Place a 100 nF decoupling capacitor as close as physically possible to the VDD (pin 14) and VSS (pin 5) pins. For boards with longer VDD traces (>25 mm), add a bulk 10 uF tantalum or aluminum electrolytic capacitor at the regulator output to suppress switching transients. The PIC16C620A-40/SO accepts 2.5 V to 5.5 V; do not exceed 5.5 V or operation becomes undefined. For battery applications, the brown-out reset threshold (~2.0 V typical) provides clean low-battery shutdown.
OTP program memory can be written only ONCE. After programming, the device cannot be erased or reprogrammed. Plan accordingly: develop and validate firmware on a Flash-based equivalent such as PIC16F630-I/SL, then transition to PIC16C620A-40/SO only for the final production build. Verify programming success (signature read-back) before sealing the part - any programming error becomes permanent. Also remember that the WDT is disabled by default and must be enabled in the configuration bits.
The PIC16C620A-40/SO requires an external clock source at OSC1 (pin 16) for 40 MHz operation. Use a fundamental-mode crystal with two 22 pF load capacitors to GND, or feed a CMOS clock from an external oscillator. For designs that need to run on lower frequencies, swap to the /04 or /20 speed variant of PIC16C620A. Layout tip: keep the crystal traces short and surrounded by GND to minimize EMI pickup.
The 18-SOIC package has a 1.27 mm pin pitch and 7.50 mm body width. Standard SOIC sockets can be used for development. For production, hand-soldering is feasible but reflow soldering with standard JEDEC profiles is preferred. Add a ground pour under the MCU to improve thermal dissipation and EMI immunity. For industrial applications, add a 10 kohm pull-up on /MCLR (pin 4) and a 100 nF cap to ground for clean reset behavior.
合规信息
PIC16C620A family predates the RoHS transition and uses legacy SnPb finishes. For RoHS-compliant designs, select Flash-based PIC16F630-I/SL or PIC16F676-I/SL. Per Microchip product page, this part is not AEC-Q100 qualified - choose AEC-Q100-qualified PIC16 series for automotive safety applications.