PIC16C57-LPE/SO - 8-Bit 40MHz OTP MCU 28-SOIC | Microchip
MPN： PIC16C57-LPE/SO ✓ 啟用中PIC16C57-LPE/SO 概覽
A PIC (Peripheral Interface Controller) microcontroller is a compact, low-cost, programmable integrated circuit that combines a CPU core, non-volatile program memory, RAM, and configurable I/O peripherals on a single silicon die. PIC microcontrollers fall within the broader category of microcontrollers (MCUs), which are a sub-class of embedded processors under the semiconductor hierarchy. The PIC16C5X family specifically uses a 12-bit-wide instruction word, which delivers approximately 2:1 code compression versus competing 8-bit architectures and reduces program-memory footprint.
The PIC16C57-LPE/SO differentiates itself through an OTP program memory (factory- or field-programmable, not re-programmable in-circuit), a Harvard architecture with separate program and data buses, and a 33-instruction set that simplifies firmware authoring. It includes a Watchdog Timer for unattended operation, an 8-bit timer/counter (TMR0) with an 8-bit prescaler, and a Power-on Reset / Brown-out Reset combination. With only 20 usable I/O pins in a 28-pin package, the device is positioned at the lower end of the PIC16C5X line, suitable for cost-sensitive embedded control.
Typical applications include appliance controllers, automotive body-electronics subsystems (non-safety), industrial sensor interfaces, low-end remote-control transmitters, security keypads, and simple LED-driving / relay-driving logic replacement. Its extended-temperature grade makes it attractive for outdoor or semi-enclosed installations.
When designing with this device, note that OTP memory cannot be re-flashed; engineering samples or pre-production programming must use the -JW ceramic-windowed or -X (UV-erasable) variants. Programming requires a Microchip MPLAB PM3, PRO MATE II, or compatible third-party programmer; in-circuit debug is not supported on the PIC16C57.
This page synthesizes distributor stock/pricing, drop-in PIC16C5X family alternatives, and practical design notes not consolidated in the manufacturer datasheet alone.
直接替換替代品，適用於 PIC16C57-LPE/SO — 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： PIC16C57-LPE/SO （相同外形與佔位） — 差異在於 Package, Program Memory Size, Core Architecture, Program Memory Type, Watchdog Timer.
PIC16C57-LPI/SO
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16C57-LP/SO
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16C57C-20/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16C57C-20E/SO
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16C55-LPE/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16C56-LPE/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16C57-LPE/SO 最大額定值與電氣特性
| Product Family | PIC® 16C |
| Core | 8-bit PIC16C5X |
| Program Memory Size | 3 KB (2K x 12) OTP |
| RAM Size | 72 bytes |
| Number of I/O Pins | 20 |
| 最大時脈頻率 | 40 MHz |
| Instruction Width | 12-bit |
| Instruction Set | 33 instructions |
| 封裝 | 28-SOIC (0.295", 7.50mm width) |
| 安裝類型 | Surface Mount |
| Speed Grade | LPE (low-power, extended temperature) |
| Timers | TMR0 8-bit timer with 8-bit prescaler |
| Watchdog Timer | Yes |
| Power-on Reset / Brown-out Reset | Yes |
| In-Circuit Debug Support | No (not on PIC16C57 base die) |
| Oscillator Type | External RC / External Crystal / Internal (per variant) |
| RoHS 狀態 | Compliant (lead-free SOIC) |
| MSL 等級 | MSL 1 (unsealed SOIC, floor-life unlimited) |
PIC16C57-LPE/SO 腳位配置
| 腳位 1 | RA2 — Port A bit 2 (bidirectional I/O) |
| 腳位 2 | RA3 — Port A bit 3 (bidirectional I/O) |
| 腳位 3 | RTCC — RTCC timer/counter input / TMR0 clock |
| 腳位 4 | MCLR — Master Clear (Reset, active-low) |
| 腳位 5 | VSS — Ground reference |
| 腳位 6 | RB0 — Port B bit 0 (bidirectional I/O) |
| 腳位 7 | RB1 — Port B bit 1 (bidirectional I/O) |
| 腳位 8 | RB2 — Port B bit 2 (bidirectional I/O) |
| 腳位 9 | RB3 — Port B bit 3 (bidirectional I/O) |
| 腳位 10 | RB4 — Port B bit 4 (bidirectional I/O) |
| 腳位 11 | RB5 — Port B bit 5 (bidirectional I/O) |
| 腳位 12 | RB6 — Port B bit 6 (bidirectional I/O) |
| 腳位 13 | RB7 — Port B bit 7 (bidirectional I/O) |
| 腳位 14 | VSS — Ground reference |
| 腳位 15 | OSC1/CLKIN — Oscillator input / external clock in |
| 腳位 16 | OSC2/CLKOUT — Oscillator output / clock out |
| 腳位 17 | RC0 — Port C bit 0 (bidirectional I/O) |
| 腳位 18 | RC1 — Port C bit 1 (bidirectional I/O) |
| 腳位 19 | RC2 — Port C bit 2 (bidirectional I/O) |
| 腳位 20 | RC3 — Port C bit 3 (bidirectional I/O) |
| 腳位 21 | RC4 — Port C bit 4 (bidirectional I/O) |
| 腳位 22 | RC5 — Port C bit 5 (bidirectional I/O) |
| 腳位 23 | RC6 — Port C bit 6 (bidirectional I/O) |
| 腳位 24 | RC7 — Port C bit 7 (bidirectional I/O) |
| 腳位 25 | VDD — Positive supply voltage |
| 腳位 26 | RA0 — Port A bit 0 (bidirectional I/O) |
| 腳位 27 | RA1 — Port A bit 1 (bidirectional I/O) |
| 腳位 28 | NC — Not connected (per datasheet) |
典型應用
PIC16C57-LPE/SO 適用於 6 應用s: Appliance Control Panels, Security Keypad and Access-Control Modules, Industrial Sensor Interface Modules, Remote-Control and IR Transmitter Devices, Automotive Body Electronics (Non-Safety), LED Display Drivers and Lighting Controllers.
Appliance Control Panels
The PIC16C57-LPE/SO fits appliance control panels (washing machines, dishwashers, microwave ovens) where its 3 KB OTP program memory, 20 I/O pins, and 8-bit PIC16C5X core deliver sufficient capability for keypad scanning, relay/LED driving, and basic state machines. With the -LPE grade offering extended temperature tolerance and Brown-out/Power-on Reset, the device reliably survives the noisy, fluctuating-supply environment of a mains-driven appliance. The Harvard architecture and 33-instruction set keep firmware development straightforward, while the 28-SOIC footprint is industry-standard for SMT appliance PCB assembly lines. Recommended companion: PIC16C57C-20/SO as production drop-in, plus a zero-cross SSR driver IC on the AC side.
推薦
Security Keypad and Access-Control Modules
For PIN-pad entry controllers and basic access-control modules, the PIC16C57-LPE/SO's 20 I/O pins handle a 4x4 matrix keypad scan with lines to spare for buzzer, LED indicator, magnetic-stripe reader handshake, and Wiegand output. The Watchdog Timer prevents lockup if the operator holds a key too long, while Brown-out Reset recovers gracefully from power glitches during door-strike activation. The 12-bit-wide instruction set compresses typical keypad-decoding logic into a few hundred words of the 3 KB OTP, leaving room for password storage and lockout timers. The extended-temperature grade is valuable for outdoor or metal-frame installations that experience thermal stress.
推薦
Industrial Sensor Interface Modules
Sensor-conditioning and signal-conditioning front-ends in industrial environments benefit from the PIC16C57-LPE/SO's 20 I/O, Watchdog Timer, and Brown-out Reset. The device can multiplex multiple digital sensors, debounce mechanical contacts, drive optocouplers to upstream PLCs, and present Modbus-friendly timing. With 72 bytes of RAM, however, complex buffering is not practical, so the PIC16C57 is best suited to compact sensor-interface PCBs handling 4-8 discrete I/O. The -LPE grade's extended temperature range (-40C to +85C typical, verify from datasheet) supports factory-floor deployments with wide ambient swings.
推薦
Remote-Control and IR Transmitter Devices
The PIC16C57-LPE/SO is well-suited to remote-control transmitter roles where 8-bit logic, low cost, and small footprint dominate. It generates IR carrier modulation (typically 36-40 kHz) using TMR0 and bit-banged GPIO, while storing button-lookup tables and protocol encoders in the 3 KB OTP. The low pin count of the 28-SOIC is sufficient for a 4x3 keypad plus IR-LED driver. The PIC16C5X's deterministic instruction timing simplifies the generation of precise IR pulse trains required by consumer-electronics protocols (RC5, NEC, SIRC). For volume manufacturing, the OTP-only nature of this part keeps unit cost low versus Flash MCUs.
推薦
Automotive Body Electronics (Non-Safety)
For non-safety automotive body-electronics modules - seat controllers, mirror adjusters, ambient lighting drivers - the PIC16C57-LPE/SO provides enough logic at a competitive price point. Twenty I/O pins handle H-bridge direction inputs, position-feedback potentiometer ADC-free sampling via comparator ICs, and LIN/CAN companion transceivers. The Watchdog Timer catches firmware lockups, and the -LPE speed grade supports wide temperature swings inside cabin-mounted enclosures. Note that the PIC16C57 is not AEC-Q100 qualified, so it should be restricted to non-safety body modules, not engine-control or airbag subsystems.
推薦
LED Display Drivers and Lighting Controllers
LED driving, sign scrolling, and decorative-lighting controllers map well to the PIC16C57-LPE/SO. Twenty I/O pins can directly Charlieplex up to ~90 LEDs (limited by refresh-rate budget) or row/column-scan a small 7-segment or matrix display. TMR0 drives the refresh interrupt, and the Watchdog Timer recovers the controller from transient brown-out events on long LED chains. The OTP-only architecture keeps BOM cost low for high-volume lighting SKUs (seasonal signage, retail displays), where firmware is fixed and does not require field updates. The -LPE temperature grade supports outdoor enclosures.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16C57-LPE/SO — 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 | PIC16C57-LPI/SO | PIC16C57-LP/SO | PIC16C57C-20/SO | PIC16C55-LPE/SO | PIC16C56-LPE/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (0.295", 7.50mm) | 28-SOIC (0.295", 7.50mm) - same | 28-SOIC (0.295", 7.50mm) - same | 28-SOIC (0.295", 7.50mm) - same | 28-SOIC (0.295", 7.50mm) - same | 28-SOIC (0.295", 7.50mm) - same |
| Program Memory | 3 KB (2K x 12) OTP | 3 KB OTP - same | 3 KB OTP - same | 3 KB OTP - same | ~768B-1KB OTP - smaller | 1 KB OTP - smaller |
| RAM Size | 72 bytes | 72 bytes - same | 72 bytes - same | 72 bytes - same | ~24-72 bytes (smaller family member) | ~72 bytes |
| Maximum Clock Frequency | 40 MHz (family max) | 40 MHz - same family | 40 MHz - same family | 20 MHz - enhanced CMOS rated | 40 MHz - same family | 40 MHz - same family |
| I/O Pins | 20 | 20 - same | 20 - same | 20 - same | 20 - same | 12-20 (family variant) |
| Core | 8-bit PIC16C5X | 8-bit PIC16C5X - same | 8-bit PIC16C5X - same | 8-bit PIC16C5X enhanced CMOS | 8-bit PIC16C5X - same | 8-bit PIC16C5X - same |
| Memory Type | OTP (One-Time Programmable) | OTP - same | OTP - same | OTP enhanced CMOS | OTP - same | OTP - same |
主要差異化特點
- Largest program memory in the 28-pin PIC16C5X family (對比PIC16C55-LPE/SO)
- Extended temperature grade via -LPE suffix (對比PIC16C57-LP/SO)
- Drop-in pin compatibility with PIC16C56-LPE/SO (對比PIC16C56-LPE/SO)
設計說明
PIC16C57 silicon does not support in-circuit debug; you cannot step through code on the target board. For development cycles, prototype on a windowed PIC16C57-JW or PIC16C57-X variant, verify functionality, then program the production OTP parts (PIC16C57-LPE/SO) using a Microchip MPLAB PM3 or PRO MATE II programmer. A common pitfall is assuming in-circuit debug works because the modern PIC16F family supports ICD - it does not on the PIC16C57.
Brown-out Reset (BOR) and Power-on Reset (POR) must be configured correctly in the configuration word before programming. The PIC16C57-LPE/SO's BOR voltage threshold (consult datasheet DS30402J Electrical Characteristics) should be set above the minimum operating Vdd but below the lowest expected supply rail. A 100 nF decoupling capacitor placed within 5 mm of the VDD pin is mandatory; add a 10 uF bulk capacitor at the PCB entry point to handle inrush from relay or motor loads.
Oscillator traces (OSC1/CLKIN, OSC2/CLKOUT) must be kept short and routed over a continuous ground plane to minimize EMI pickup. Place the crystal or resonator within 5 mm of the OSC pins, with load capacitors grounded close to the device ground pin. Avoid routing I/O traces under the oscillator area; cross-talk on the 28-SOIC's compact pinout can corrupt timing on sensitive analog or timer-driven circuits such as IR transmitters.
The 28-SOIC (0.295", 7.50mm width) pin pitch is 1.27mm, so hand-soldering is feasible but production assembly should use reflow. Ensure the PCB land pattern follows IPC-7351 SOIC-28 nominal. MCLR (pin 4) should be pulled up to VDD via a 10 kohm resistor; a 100 nF capacitor on MCLR provides noise immunity but limits in-circuit programming speed if it is too large. For Watchdog Timer use, configure the prescaler carefully to avoid unintended device resets during long interrupt-disabled routines.
合規資訊
RoHS and REACH compliance per Microchip product page material declarations. Not AEC-Q100 qualified - do not use in safety-critical automotive subsystems. PIC16C5X family is mature, active for industrial and embedded legacy designs.
