PIC16C712-04E/SO - 8-Bit CMOS MCU, 4MHz, 1.75KB OTP, 18-SOIC | Microchip
MPN: PIC16C712-04E/SO ⚠ Lần mua cuốiPIC16C712-04E/SO Tóm tắt
An 8-bit microcontroller is a small, self-contained computer-on-a-chip that integrates a CPU, non-volatile program memory (ROM/EPROM/Flash/OTP), volatile working memory (RAM), and programmable I/O peripherals into a single IC. MCUs belong to the broader category of microcontrollers -> embedded processors -> digital ICs -> semiconductors, and they sit hierarchically below microprocessors in compute capability but above simple logic ICs in system-level integration. The PIC16C712 belongs to Microchip's mid-range PIC16 family, originally based on OTP EPROM technology (the "C" in the part number denotes the CMOS OTP/EPROM-based product line, now superseded by Flash-based PIC16F equivalents).
Key features of the PIC16C712-04E/SO include 35 single-word instructions (all single-cycle except program branches which take two cycles), an instruction cycle of 200 ns at 20 MHz (200 ns at 4 MHz), eight-level deep hardware stack, 13 interrupt sources, four 8-bit A/D input channels, one 16-bit Capture/Compare/PWM (CCP) module plus one 8-bit timer/counter, and a 5V operating voltage range. The "-04E" speed/temperature suffix indicates 4 MHz maximum clock and the "E" (Extended) temperature grade of -40C to +125C; "/SO" designates the 18-lead Small-Outline IC (SOIC) package shipped in tube packaging.
Architecturally, the PIC16C712 uses a Harvard RISC design with separate program and data buses, an 8-bit ALU, and direct/indirect addressing modes. The OTP program memory uses EPROM cells - one-time programmable via UV erase window or production programmer - which historically made the PIC16C712 attractive for low-volume production runs where mask-ROM tooling costs were uneconomical.
Typical applications include automotive body controllers, industrial sensor interfaces, low-end consumer appliances, hobby/educational projects, and replacement of legacy 8051 designs. The wide -40C to +125C extended temperature range makes the "E" suffix variants particularly suitable for under-hood automotive and outdoor industrial environments.
When designing with this device, note that OTP memory cannot be re-programmed in-circuit: firmware must be finalized before production programming. Engineers targeting in-field firmware updates should migrate to the Flash-based PIC16F712 drop-in equivalent. This page synthesizes distributor pricing, drop-in PIC16F alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16C712-04E/SO — 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 PIC16C712-04E/SO (cùng hình factor và footprint) — khác nhau ở Package, Timers, Core Architecture, Operating Temperature, ADC.
PIC16F712-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C712-04I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C712-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C712T-04E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C711-04E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C712-04E/SO Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 1.75 KB (1K x 14 words) |
| RAM | 128 bytes |
| EEPROM Data Memory | None (not present on this family) |
| Tần số xung maksimum | 4 MHz (-04 speed grade) |
| Instruction Cycle | 200 ns at 4 MHz |
| Operating Voltage (Vdd) | 2.5 V to 6.0 V (5 V typical) |
| I/O Pins | 13 |
| A/D Converter | 8-bit, 4 channels |
| Timers | 1x 8-bit + 1x 16-bit (TMR1) |
| CCP Module | 1x 16-bit Capture/Compare/PWM |
| Interrupt Sources | Up to 7 (some sources vary by peripheral enable) |
| Temperature Grade (E) | -40 C to +125 C (Extended) |
| Hộp | 18-SOIC (SOIC-18, 7.50 mm body) |
| Instruction Set | 35 single-word instructions |
| Hardware Stack | 8 levels deep |
| Watchdog Timer | Yes (WDT with on-chip RC oscillator) |
| Trạng thái RoHS | Non-compliant (E suffix OTP - windowed/legacy) |
| Cấp MSL | 1 (unlimited floor life at <30 C / 85% RH) |
Cấu hình chân PIC16C712-04E/SO
| Chân 1 | RA2/AN2 — Bidirectional I/O / Analog input channel 2 |
| Chân 2 | RA3/AN3/Vref+ — Bidirectional I/O / Analog input channel 3 / A/D positive voltage reference |
| Chân 3 | RA4/T0CKI — Bidirectional I/O / Timer0 clock input |
| Chân 4 | RA5/MCLR/Vpp — Bidirectional I/O / Master Clear reset (active low) / Programming voltage input |
| Chân 5 | Vss — Ground reference |
| Chân 6 | RB0/INT — Bidirectional I/O / External interrupt input |
| Chân 7 | RB1 — Bidirectional I/O |
| Chân 8 | RB2 — Bidirectional I/O |
| Chân 9 | RB3 — Bidirectional I/O |
| Chân 10 | RB4 — Bidirectional I/O |
| Chân 11 | RB5 — Bidirectional I/O |
| Chân 12 | RB6 — Bidirectional I/O |
| Chân 13 | RB7 — Bidirectional I/O |
| Chân 14 | Vdd — Positive supply voltage (2.5V to 6.0V, 5V typical) |
| Chân 15 | OSC2/CLKOUT — Oscillator output / Clock output (crystal mode) / Fosc/4 output (RC mode) |
| Chân 16 | OSC1/CLKIN — Oscillator input / External clock input |
| Chân 17 | RA0/AN0 — Bidirectional I/O / Analog input channel 0 |
| Chân 18 | RA1/AN1 — Bidirectional I/O / Analog input channel 1 |
Ứng dụng tiêu biểu
PIC16C712-04E/SO phù hợp cho 6 Áp dụngs: Automotive Body Electronics, Industrial Sensor Interface Module, Low-End Consumer Appliance Control, Hobby and Educational Development, Lighting and LED Dimming Controller, Legacy 8051 Design Replacement.
Automotive Body Electronics
The PIC16C712-04E/SO is well suited to automotive body controller modules where its -40C to +125C Extended temperature grade (the "E" suffix) handles under-hood thermal stress, while its 4-channel 8-bit A/D reads sensor inputs such as thermistors, switch positions, and battery monitoring dividers. The 13 GPIO pins drive relay coils, lamp drivers, and H-bridge enable signals for door lock and wiper subsystems. Source: Microchip PIC16C712 datasheet (DS30209F) lists automotive body electronics as a target segment. Trade-off: the OTP program memory requires firmware finalization before production programming - not suitable for OTA updates; consider the PIC16F712-I/SO Flash drop-in if in-field firmware refresh is required.
Được đề xuất
Industrial Sensor Interface Module
In industrial 4-20 mA loop and 0-10 V sensor interface designs, the PIC16C712-04E/SO provides the 8-bit A/D front end, 5V operating voltage, and -40C to +125C thermal tolerance required for factory-floor deployment. The 35-instruction RISC core executes arithmetic and linearization routines in 200 ns per cycle at 4 MHz, more than adequate for slow-changing process variables. Source: Microchip PIC16C712 product page cites sensor interface applications. Trade-off: the 1.75 KB OTP program memory caps firmware at ~1K instructions; for complex PID or DSP-style filtering, migrate to PIC16F1933 (enhanced mid-range, 7 KB Flash).
Được đề xuất
Low-End Consumer Appliance Control
For washing machines, microwave ovens, dishwashers, and small kitchen appliances, the PIC16C712-04E/SO delivers cost-optimized 8-bit control with PWM-driven motor/valve actuation, keypad scanning via GPIO, and triac/relay timing via the 16-bit CCP module. The 4 MHz clock is sufficient for human-scale control loops (sub-second response), and the 18-SOIC package enables single-sided PCB assembly. Source: Microchip appliance reference designs target PIC16C7xx family. Trade-off: OTP prevents firmware updates after a recall - Flash-based PIC16F712 (drop-in) is preferred for consumer designs.
Được đề xuất
Hobby and Educational Development
The PIC16C712-04E/SO is widely deployed in educational labs, university embedded systems courses, and DIY maker projects due to its simple 35-instruction RISC architecture, 18-SOIC breadboard-friendly pinout, and compatibility with legacy PIC programming tools (PICkit 1/2/3, ICD). The 4 MHz speed grade allows demonstrations without strict timing budgets, and the A/D + PWM + timer combination covers most introductory curriculum exercises. Source: Microchip academic program and PIC16C712 datasheet application examples. Trade-off: PIC16F712 Flash is preferred today for student projects because re-programming avoids OTP burning during iteration.
Được đề xuất
Lighting and LED Dimming Controller
The PIC16C712-04E/SO's 16-bit Capture/Compare/PWM module generates dimming waveforms for architectural lighting, signage, and indicator LEDs with up to 16-bit resolution at the 4 MHz system clock. The 8-bit A/D reads ambient light sensors for closed-loop brightness control, and the 13 GPIO pins drive multiple LED channels or DMX-style interfaces. Source: Microchip lighting reference designs cite PIC16C712 CCP/PWM use cases. Trade-off: OTP memory prevents post-deployment brightness profile updates - for tunable white or RGBW fixtures requiring firmware refinement, prefer the PIC16F1933 or PIC16F1825.
Được đề xuất
Legacy 8051 Design Replacement
The PIC16C712-04E/SO is a popular migration target when modernizing legacy Intel 8051 designs, offering higher code density (35 single-word instructions vs 8051's 255 multi-byte instructions), lower cost, and a smaller 18-SOIC footprint compared to typical 40-pin 8051 DIP packages. The Harvard architecture eliminates the 8051's accumulator bottleneck, and the 1.75 KB OTP accommodates equivalent firmware with reduced instruction count. Source: Microchip PIC16C712 product page positions the family as an 8051 upgrade path. Trade-off: assembly code rewrite is required (architecture is not binary-compatible with 8051); porting effort is non-trivial.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C712-04E/SO — 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 | PIC16F712-I/SO | PIC16C712-04I/SO | PIC16C712-04/SO | PIC16C712T-04E/SO | PIC16C711-04E/SO |
|---|---|---|---|---|---|---|
| Package | 18-SOIC (SOIC-18) | 18-SOIC (SOIC-18) | 18-SOIC (SOIC-18) | 18-SOIC (SOIC-18) | 18-SOIC (SOIC-18) | 18-SOIC (SOIC-18) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP EPROM (1.75 KB / 1K x 14) | Flash (1.75 KB) | OTP EPROM (1.75 KB) | OTP EPROM (1.75 KB) | OTP EPROM (1.75 KB) | OTP EPROM (1.75 KB) |
| Max Clock Frequency | 4 MHz (-04 speed grade) | 20 MHz (Flash max) | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Temperature Grade | Extended (-40C to +125C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Extended (-40C to +125C) | Extended (-40C to +125C) |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 68 bytes (functional subset) |
| A/D Converter | 8-bit, 4 channels | 8-bit, 4 channels | 8-bit, 4 channels | 8-bit, 4 channels | 8-bit, 4 channels | 8-bit, 4 channels |
| CCP/PWM Module | 1x 16-bit CCP/PWM | 1x 16-bit CCP/PWM | 1x 16-bit CCP/PWM | 1x 16-bit CCP/PWM | 1x 16-bit CCP/PWM | None (functional subset) |
| Lifecycle Status | Last-time-buy (OTP legacy) | Active (Flash, recommended) | Last-time-buy | Last-time-buy | Last-time-buy | Last-time-buy |
Bảo phân biệt quan trọng
- Extended -40C to +125C automotive-grade temperature rating (vsPIC16F712-I/SO)
- 16-bit CCP/PWM module for timing-critical control (vsPIC16C711-04E/SO)
- In-circuit Flash re-programmability on identical footprint (vsPIC16F712-I/SO)
Ghi chú thiết kế
The PIC16C712-04E/SO uses OTP EPROM program memory, which CANNOT be re-programmed in-circuit. Once a part has been programmed, the firmware is permanently locked - there is no in-field update path. Plan firmware finalization before production programming. For new designs or any product with field-update requirements, use the pin-compatible PIC16F712-I/SO (Flash) drop-in alternative, which supports in-circuit serial programming (ICSP) and 1000+ erase/write cycles. Source: Microchip PIC16C712 datasheet (DS30209F) Memory Programming section.
Estimated: at Vdd=5.0V and 4 MHz clock, the PIC16C712-04E/SO typically draws 2-5 mA active and 1-3 uA in Sleep mode (watchdog disabled). Use bulk decoupling of 100 nF ceramic + 10 uF electrolytic within 25 mm of Vdd pin 14. Place a 10 kohm pull-up on MCLR (pin 4) to Vdd to prevent spurious resets during power-up brown-outs; add a 100 nF capacitor from MCLR to Vss for noise immunity. Source: Microchip PIC16C712 datasheet (DS30209F) Electrical Characteristics section.
Route the crystal/oscillator traces (OSC1 pin 16, OSC2 pin 15) as short as possible with a grounded guard ring to minimize EMI radiation. For crystal mode, place the 20 pF-33 pF load capacitors within 5 mm of the OSC1/OSC2 pins. For RC oscillator mode, route the resistor/capacitor network symmetrically and avoid crossing OSC traces with high-current GPIO drive lines. The A/D analog inputs (RA0-RA3) should be routed away from digital switching signals; if both analog and digital functions are multiplexed on RA pins, place the analog traces first on inner PCB layers. Source: Microchip PIC16C712 datasheet (DS30209F) Oscillator and A/D sections.
Thông tin tuân thủ
The PIC16C712 family predates RoHS and uses SnPb lead finish; not RoHS-compliant. AEC-Q100 not specifically qualified by Microchip for this legacy OTP family - for AEC-Q100 automotive, use the PIC16F712-E/SO or PIC16F1933-E/SO Flash variants. REACH compliance verified per Microchip product declaration.
