PIC16C57C/JW - 8-bit 20MHz EPROM MCU, 3KB, 28-CDIP Window | Microchip
MPN: PIC16C57C/JW ✗ پایان تولیدPIC16C57C/JW نمای کلی
An 8-bit microcontroller (MCU) is a single-chip computer that combines a CPU, RAM, non-volatile program memory, and peripheral I/O on one die. The PIC® 16C family sits within Microchip's mid-range PIC architecture hierarchy: PIC® 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. These MCUs are widely used as state machines, glue logic, and simple control cores where deterministic instruction timing and minimal external parts matter more than raw throughput.
The PIC16C57C delivers an instruction cycle of 200 ns (one fetch, one execute) from a 20 MHz oscillator, supports a 2-level hardware stack, and offers programmable I/O ports (PORTA/B/C) with individual direction control. Watchdog timer with on-chip RC oscillator and Power-on Reset reduce external component count. A power-saving SLEEP mode and selectable oscillator options (RC, XT, LP, HS) provide flexibility across 2.0 V to 6.0 V operation.
The architecture is a RISC-style Harvard design with separate 12-bit program and 8-bit data paths. Code is stored in UV-erasable EPROM (the /JW windowed package allows re-programming after erasing with ultraviolet light, distinguishing it from one-time-programmable /P and /SP plastic DIP variants). CMOS process technology keeps supply current low even at full clock speed, making it suitable for battery and industrial applications.
Typical applications include automotive body electronics, industrial control logic, remote sensor interfaces, and legacy embedded systems. Engineers migrating older PIC16C5x designs often retain the PIC16C57C/JW in production because the JW windowed package allows iterative firmware development with UV erase, unlike OTP variants.
When designing with this device, note that the 28-CDIP (JW) windowed package is intended for prototyping and engineering samples; for production runs, consider the /P (plastic DIP) or /SP (skinny plastic DIP) OTP variants. The UV window requires a quartz window cover, and erasure requires approximately 20 minutes of UV exposure at the recommended intensity.
جایگزین‌های drop-in برای PIC16C57C/JW — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC16C57C/JW (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Program Memory Type, Mounting Type, Family, Instruction Cycle Time.
PIC16C57C-04/P
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16C57C-20/P
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C57C-04I/P
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C57C-04/SP
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16C57C-20/SP
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C57C-20E/P
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16C57C/JW حداکثر مقادیر مجاز و مشخصات الکتریکی
| Architecture | PIC® 8-bit (Harvard RISC) |
| Family | PIC® 16C |
| Core Size | 8-bit |
| Program Memory Type | EPROM (UV-erasable, windowed) |
| Program Memory Size | 3 KB (2K × 12) |
| RAM | 72 bytes |
| Number of I/O Pins | 20 |
| حداکثر فرکانس کلاک | 20 MHz |
| Instruction Cycle Time | 200 ns (200 ns = 4 × Tosc) |
| Instruction Set Size | 33 single-word instructions |
| بسته‌بندی | 28-pin CDIP (Ceramic DIP) with UV window |
| نوع نصب | Through-hole (DIP) |
| ولتاژ تغذیه کاری | 2.0 V to 6.0 V |
| محدوده دمای کاری | -40 °C to +85 °C (industrial) |
| Hardware Stack | 2 levels |
| Oscillator Options | RC, XT, LP, HS |
| Peripherals | Watchdog Timer, Power-on Reset, SLEEP mode |
پیکربندی پین PIC16C57C/JW
| پین 1 | RA2 — PORTA bit 2 (bidirectional I/O) |
| پین 2 | RA3 — PORTA bit 3 (bidirectional I/O) |
| پین 3 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پین 4 | MCLR — Master clear reset (active low) |
| پین 5 | VSS — Ground reference |
| پین 6 | RB0 — PORTB bit 0 (bidirectional I/O) |
| پین 7 | RB1 — PORTB bit 1 (bidirectional I/O) |
| پین 8 | RB2 — PORTB bit 2 (bidirectional I/O) |
| پین 9 | RB3 — PORTB bit 3 (bidirectional I/O) |
| پین 10 | RB4 — PORTB bit 4 (bidirectional I/O) |
| پین 11 | RB5 — PORTB bit 5 (bidirectional I/O) |
| پین 12 | RB6 — PORTB bit 6 (bidirectional I/O) |
| پین 13 | RB7 — PORTB bit 7 (bidirectional I/O) |
| پین 14 | RC0 — PORTC bit 0 (bidirectional I/O) |
| پین 15 | RC1 — PORTC bit 1 (bidirectional I/O) |
| پین 16 | RC2 — PORTC bit 2 (bidirectional I/O) |
| پین 17 | RC3 — PORTC bit 3 (bidirectional I/O) |
| پین 18 | RC4 — PORTC bit 4 (bidirectional I/O) |
| پین 19 | RC5 — PORTC bit 5 (bidirectional I/O) |
| پین 20 | RC6 — PORTC bit 6 (bidirectional I/O) |
| پین 21 | RC7 — PORTC bit 7 (bidirectional I/O) |
| پین 22 | VSS — Ground reference |
| پین 23 | VDD — Positive supply voltage (2.0 V to 6.0 V) |
| پین 24 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| پین 25 | OSC1/CLKIN — Oscillator crystal input / external clock |
| پین 26 | RA0 — PORTA bit 0 (bidirectional I/O) |
| پین 27 | RA1 — PORTA bit 1 (bidirectional I/O) |
| پین 28 | VDD — Positive supply voltage (2.0 V to 6.0 V) |
کاربردهای معمول
PIC16C57C/JW مناسب است برای 6 کاربردs: Automotive Body Electronics, Industrial Control Logic, Remote Sensor Interface, Legacy Embedded Replacement, Consumer Appliance Controllers, Educational and Development Boards.
Automotive Body Electronics
The PIC16C57C/JW fits automotive body-electronics modules including lighting controllers, wiper logic, and HVAC mode selectors. Its 20 MHz clock provides 5 MIPS instruction throughput, sufficient for state-machine sequencing across 20 high-current I/O pins rated at 25 mA each. With an industrial -40 °C to +85 °C operating range and 2.0 V to 6.0 V supply tolerance, it tolerates automotive 12 V rails post-regulation and cold-crank events. Engineers prototype the JW windowed variant during firmware development, then transition to the /P OTP version for production runs.
پیشنهادی
Industrial Control Logic
For industrial control panels and discrete logic replacement, the PIC16C57C/JW replaces banks of 74HC glue logic with a single programmable state machine. Its 33-instruction RISC core, 200 ns cycle time, and 2-level hardware stack simplify ladder-logic-to-microcontroller migration. The HS oscillator mode supports high-frequency noise environments, while the Watchdog Timer and Power-on Reset provide robust field-deployment behavior. The JW windowed package allows service technicians to re-flash firmware across long product lifecycles.
پیشنهادی
Remote Sensor Interface
Remote sensor interface modules using the PIC16C57C/JW benefit from its low 2.0 V minimum supply voltage, enabling 2-cell alkaline or single-cell Li-ion battery operation. The 72-byte RAM accommodates sensor sample buffers, while 20 I/O pins can directly drive 4-20 mA current loops or read digital sensors. SLEEP mode plus the on-chip Watchdog Timer reduce average current to microamp levels for duty-cycled sampling - critical for unattended solar-powered installations.
پیشنهادی
Legacy Embedded Replacement
The PIC16C57C/JW is widely used as a drop-in replacement for obsolete PIC16C5x silicon in legacy equipment where re-spinning the PCB is impractical. Its identical 28-pin DIP pinout, instruction set, and timing preserve firmware compatibility, while the JW window allows code updates during service. Field-replaceable microcontrollers reduce mean time to repair for industrial PLCs, elevator controllers, and HVAC units in operation since the 1990s. The 2-level hardware stack and Harvard architecture are unchanged across generations.
پیشنهادی
Consumer Appliance Controllers
Consumer appliance controllers (washing machines, microwave ovens, dishwashers) use the PIC16C57C/JW as a cost-optimized main controller. The 3 KB EPROM holds appliance state machines and timing routines, the 20 high-current I/O pins drive relays and seven-segment displays directly without drivers, and the SLEEP mode meets standby power regulations. Production runs use the /P OTP variant, but the /JW windowed version supports firmware validation across model variants.
پیشنهادی
Educational and Development Boards
University courses and developer training kits rely on the PIC16C57C/JW windowed variant because students can erase and re-flash code dozens of times during lab sessions. The 28-pin DIP form factor is breadboard-friendly, the 33-instruction RISC set is teachable in a single semester, and the Harvard architecture introduces pre-emptively the memory-model concepts used in modern ARM cores. The JW UV window has been a pedagogical tool for demonstrating EPROM physics for decades.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC16C57C/JW — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC16C57C-04/P | PIC16C57C-20/P | PIC16C57C-04I/P | PIC16C57C-04/SP | PIC16C57C-20/SP |
|---|---|---|---|---|---|---|
| Package | 28-CDIP with UV window | 28-PDIP (OTP, plastic) | 28-PDIP (OTP, plastic) | 28-PDIP (OTP, industrial) | 28-skinny PDIP (OTP) | 28-skinny PDIP (OTP) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | UV-EPROM (windowed) | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM |
| Max Clock Frequency | 20 MHz | 4 MHz | 20 MHz | 4 MHz | 4 MHz | 20 MHz |
| Program Memory Size | 3 KB (2K x 12) | 3 KB (2K x 12) | 3 KB (2K x 12) | 3 KB (2K x 12) | 3 KB (2K x 12) | 3 KB (2K x 12) |
| RAM | 72 bytes | 72 bytes | 72 bytes | 72 bytes | 72 bytes | 72 bytes |
| Number of I/O | 20 | 20 | 20 | 20 | 20 | 20 |
| Operating Temperature | -40 °C to +85 °C | 0 °C to +70 °C | 0 °C to +70 °C | -40 °C to +85 °C | 0 °C to +70 °C | 0 °C to +70 °C |
| UV-Erasable Window | Yes | No (OTP) | No (OTP) | No (OTP) | No (OTP) | No (OTP) |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
تفاوت‌های کلیدی
- Only PIC16C57 variant with UV-erasable windowed CDIP package (در مقابلPIC16C57C-04/P)
- Maximum 20 MHz clock speed vs 4 MHz lower-tier variants (در مقابلPIC16C57C-04/P)
- Wide 2.0 V to 6.0 V operating voltage for battery flexibility (در مقابلPIC16C57C-04I/P (industrial))
یادداشت‌های طراحی
Estimated: at 20 MHz and VDD = 5.0 V, the PIC16C57C/JW typically draws 5-10 mA active current and < 1 µA in SLEEP mode per Microchip datasheet DC characteristics. For battery-powered designs, place the device in SLEEP between sensor reads and use the Watchdog Timer (~18 ms internal RC period) to wake periodically. Add a 100 nF decoupling capacitor close to VDD (pin 28) and a 10 µF bulk capacitor on the supply rail to suppress motor and relay noise spikes.
Do not confuse the /JW windowed ceramic DIP variant with /P plastic OTP variants when ordering - the /JW is significantly more expensive and intended for development only. Configuration bits (oscillator selection, Watchdog enable, code protection) must be set correctly at program time; an incorrect Watchdog configuration can lock the device into a reset loop. UV erase requires ~20 minutes of 12,000 µW/cm² UV exposure - verify erasure under short-wavelength UV lamp, not sunlight.
Place the oscillator crystal or resonator within 10 mm of OSC1 (pin 25) and OSC2 (pin 26) to minimize stray capacitance and EMI susceptibility. For HS oscillator mode at 20 MHz, use a fundamental-cut crystal with 20 pF load capacitors tied to VSS. Keep high-current I/O traces (driving relays, LEDs) physically separated from oscillator traces to avoid ground bounce coupling into the clock. MCLR (pin 4) requires a 10 kΩ pull-up to VDD for proper reset operation.
اطلاعات انطباق
Ceramic DIP /JW package historically contains lead-bearing ceramic glass; compliance status depends on lot code and may fall under RoHS exemption 7(a). Verify per the manufacturer certificate of conformance for each date code.
