PIC16C712-04/SS - 4MHz 8-Bit OTP MCU with 8-bit ADC | Microchip
MPN: PIC16C712-04/SS ✗ Cuối đờiPIC16C712-04/SS Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (program + data), peripherals (timers, ADC, communication), and I/O pins on one IC. The PIC16C712 belongs to the PIC16 mid-range family — a category of 8-bit RISC microcontrollers from Microchip Technology widely used in embedded control. Within the broader taxonomy it sits as: microcontroller -> 8-bit MCU -> PIC16 mid-range -> PIC16C71x sub-family. RISC architecture, OTP memory and integrated ADC make this category the workhorse for cost-sensitive, low-volume embedded designs.
Key features of the PIC16C712 include: 13 I/O pins (one input-only), four interrupt sources, two 8-bit timers (Timer0, Timer2) plus one 16-bit timer (Timer1) with capture, a 4-channel 8-bit ADC, and a Capture/Compare/PWM module. The Harvard memory architecture separates program (1.75 KB EPROM) and data (128 B SRAM) buses to allow simultaneous instruction fetch and operand access, improving throughput vs. von-Neumann CISC 8-bit MCUs of the same vintage.
The PIC16C712 uses a 14-bit wide instruction word with 35 single-cycle opcodes, delivering 4 MIPS at 4 MHz. Internal RC oscillator and external crystal/RC modes are supported. The 8-bit successive-approximation ADC shares pins with digital I/O and has its own reference inputs (VREF+/VRREF-). Brown-out Reset, Power-on Reset, Watchdog Timer with on-chip RC oscillator, and code protection protect firmware in noisy industrial environments.
Typical applications include industrial appliance control, automotive subsystems (HVAC, lighting, instrument clusters), consumer products, and analog-signal-conditioning front-ends where the integrated ADC eliminates an external converter. Designers choose the PIC16C712 for cost-sensitive production runs where OTP programming is acceptable.
When designing with this device, account for OTP memory — firmware cannot be updated in the field. Engineers developing prototypes should use the PIC16F712 flash variant for iteration, then migrate the validated firmware to the PIC16C712 for low-cost production. The 4 MHz speed grade supports instruction execution up to 1 us per instruction.
This page synthesizes distributor pricing, cross-reference data, and design notes that are not aggregated in any single manufacturer or distributor source, giving engineers a single reference for evaluating drop-in substitutes and lifecycle risk.
Bộ thay thế dễ dàng lắp đặt cho PIC16C712-04/SS — 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 PIC16C712-04/SS (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Size, Timers, ADC, Core Architecture.
PIC16C712-04I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C712T-04/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C711-04/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C710-04/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F712-I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C712-04/SS Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC RISC |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 1.75 KB |
| RAM Size | 128 B |
| Tần số xung maksimum | 4 MHz |
| Instruction Word Width | 14 bit |
| ADC Channels | 4 channels, 8-bit resolution |
| Timers | Timer0 (8-bit), Timer1 (16-bit), Timer2 (8-bit) |
| Capture/Compare/PWM | 1 CCP module (16-bit) |
| I/O Pins | 13 |
| Hộp | SSOP-20 |
| Điện áp cung cấp | 3.0 V to 5.5 V (typical 5 V) |
| Nhiệt độ hoạt động | 0C to +70C (commercial) |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC16C712-04/SS
| Chân 1 | RA2 — Digital I/O / AN2 analog input |
| Chân 2 | RA3 — Digital I/O / AN3 analog input |
| Chân 3 | RA4 — Digital I/O / T0CKI timer0 clock input |
| Chân 4 | MCLR/VPP — Master clear reset / programming voltage input |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — Digital I/O / external interrupt input |
| Chân 7 | RB1 — Digital I/O |
| Chân 8 | RB2 — Digital I/O |
| Chân 9 | RB3 — Digital I/O |
| Chân 10 | RB4 — Digital I/O |
| Chân 11 | RB5 — Digital I/O |
| Chân 12 | RB6 — Digital I/O / ICD clock |
| Chân 13 | RB7 — Digital I/O / ICD data |
| Chân 14 | VSS — Ground reference |
| Chân 15 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| Chân 16 | OSC1/CLKIN — Oscillator crystal input / external clock |
| Chân 17 | RA0 — Digital I/O / AN0 analog input |
| Chân 18 | RA1 — Digital I/O / AN1 analog input |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply voltage |
Ứng dụng tiêu biểu
PIC16C712-04/SS phù hợp cho 6 Áp dụngs: Industrial Appliance Control, Automotive Subsystem Control, Consumer Electronics Control, Analog Sensor Signal Conditioning, PWM Motor Speed Control, HVAC Thermostat and Fan Control.
Industrial Appliance Control
The PIC16C712-04/SS fits industrial appliance control because its 4-channel 8-bit ADC and one 16-bit CCP module integrate sensor sampling and PWM actuation in a single SSOP-20 IC. Its 13 I/O pins drive relays, switches, and indicator LEDs in washing machines, dryers, and HVAC fan controllers. At 4 MHz and 5 V supply, the OTP RISC core executes 4 MIPS — sufficient for closed-loop PID loops with 1 ms update rates typical in appliance thermostats.
Được đề xuất
Automotive Subsystem Control
In automotive subsystems such as HVAC flap motors, instrument cluster drivers, and interior lighting, the PIC16C712-04/SS provides a cost-optimized OTP MCU with 4-channel ADC for analog sensing and a CCP module for PWM dimming. Its 0C to +70C commercial grade limits it to cabin applications — for under-hood use, the PIC16C712-04I/SS industrial variant or PIC16F712-I/SS is preferred. SSOP-20 surface-mount packaging supports high-density PCB layouts in space-constrained automotive ECUs.
Được đề xuất
Consumer Electronics Control
The PIC16C712-04/SS serves consumer remote controls, IR-driven toys, and low-cost appliance interfaces where the integrated 8-bit ADC reads potentiometers or thermistors and the CCP module generates the carrier-frequency PWM for IR LED transmission. Its 128 B RAM accommodates user-input debouncing state machines and LED pattern tables. OTP programming locks the firmware per model, preventing reverse engineering of consumer features.
Được đề xuất
Analog Sensor Signal Conditioning
For analog sensor signal conditioning, the PIC16C712-04/SS converts up to 4 analog inputs to 8-bit digital values using its successive-approximation ADC, with independent VREF+/VREF- references for ratiometric measurements. The RISC core runs linearization algorithms (e.g., thermistor Steinhart-Hart, bridge compensation) at 4 MIPS. SSOP-20 packaging fits densely populated sensor-interface PCBs alongside op-amp signal conditioning chains.
Được đề xuất
PWM Motor Speed Control
The PIC16C712-04/SS's 16-bit Capture/Compare/PWM module generates high-resolution PWM at the 4 MHz clock, suitable for brushed DC motor speed control in small fans, pumps, and hobby robotics. The CCP module supports up to 10-bit PWM resolution (1024 steps) and can drive external MOSFET drivers via the MCU's 13 I/O pins. The CCP capture function measures back-EMF from Hall sensors for closed-loop motor commutation.
Được đề xuất
HVAC Thermostat and Fan Control
The PIC16C712-04/SS controls HVAC thermostats by sampling thermistor or RTD temperature via its 8-bit ADC and driving fan/relay outputs through the CCP PWM module and I/O pins. At 4 MIPS the core implements hysteresis control, filter averaging, and relay de-bounce algorithms simultaneously. The 1.75 KB OTP EPROM stores thermostat setpoints, calibration constants, and fan-mode lookup tables. SSOP-20 footprint fits slim wall-thermostat enclosures.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C712-04/SS — 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 | PIC16C712-04I/SS | PIC16C712T-04/SS | PIC16C711-04/SS | PIC16C710-04/SS | PIC16F712-I/SS |
|---|---|---|---|---|---|---|
| Package | SSOP-20 | SSOP-20 (same) | SSOP-20 (same) | SSOP-20 (same) | SSOP-20 (same) | SSOP-20 (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 1.75 KB OTP EPROM | 1.75 KB OTP EPROM | 1.75 KB OTP EPROM | 1.75 KB OTP EPROM | 1.75 KB OTP EPROM | 2 KB Flash |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| ADC Channels | 4 channels, 8-bit | 4 channels, 8-bit | 4 channels, 8-bit | 4 channels, 8-bit | 4 channels, 8-bit | 4 channels, 8-bit |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Flash (in-system reprogrammable) |
| CCP Module | 1x 16-bit CCP | 1x 16-bit CCP | 1x 16-bit CCP | 1x 16-bit CCP | None (no CCP) | 1x 16-bit CCP |
| Operating Temperature | 0C to +70C (commercial) | -40C to +85C (industrial) | 0C to +70C (commercial) | 0C to +70C (commercial) | 0C to +70C (commercial) | -40C to +85C (industrial) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Active |
Bảo phân biệt quan trọng
- Industrial temperature grade available in same package (vsPIC16C712-04/SS (commercial))
- Flash memory migration path in same package (vsPIC16C712-04/SS (OTP EPROM))
- Faster 20 MHz clock with same peripheral set (vsPIC16C712-04/SS (4 MHz))
- Active lifecycle status vs obsolete target part (vsPIC16C712-04/SS (obsolete))
Ghi chú thiết kế
The PIC16C712-04/SS uses One-Time-Programmable (OTP) EPROM, which cannot be erased. Once a unit is programmed with firmware, errors in the firmware image force the device to be discarded. Engineers prototyping firmware should use the PIC16F712-I/SS (flash) variant for development, then migrate the validated firmware to the PIC16C712 for production. This avoids wasting OTP devices during firmware iteration.
The PIC16C712-04/SS operates from a single 3.0 V to 5.5 V supply. Decouple VDD (pin 20) with a 100 nF ceramic capacitor placed within 5 mm of the IC, plus a 10 uF bulk electrolytic on the PCB. The VSS pins (5, 14, 19) should each connect to a common ground plane to minimize digital switching noise coupling into the ADC analog inputs (AN0-AN3) on PORTA.
When using the 4-channel 8-bit ADC for precision measurements, configure RA0-RA3 as analog inputs by clearing the appropriate TRISA bits and the PCFG bits in ADCON1. Use VREF+ and VREF- as dedicated analog reference inputs rather than sharing them with digital signals. Acquire analog signals for at least 10 us before initiating conversion to allow the internal sample-and-hold capacitor to settle.
The SSOP-20 package has 0.65 mm pin pitch. PCB land patterns should follow IPC-7351 nominal footprints with at least 0.4 mm wide pads. Route traces from SSOP pins on inner PCB layers or escape them on the top layer with short fanouts. Keep the exposed ground paddle (if present on package variant) connected to the ground plane for thermal dissipation.
Thông tin tuân thủ
Compliance information not provided in the verified web data. The PIC16C712 is an obsolete OTP MCU originally designed before modern automotive qualification standards were universally applied to 8-bit MCUs. AEC-Q100 grade is not qualified.
