PIC16C712-04/SS - 4MHz 8-Bit OTP MCU with 8-bit ADC | Microchip
MPN: PIC16C712-04/SS ✗ انتهى عمره الإنتاجيPIC16C712-04/SS نظرة عامة
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.
بدائل مباشرة لـ PIC16C712-04/SS — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC16C712-04/SS (نفس عامل الشكل والبصمة) — يختلف في Package, Program Memory Size, Timers, ADC, Core Architecture.
PIC16C712-04I/SS
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16C712T-04/SS
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16C711-04/SS
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C710-04/SS
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F712-I/SS
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16C712-04/SS الحدود القصوى والخصائص الكهربائية
| Core Architecture | 8-bit PIC RISC |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 1.75 KB |
| RAM Size | 128 B |
| أقصى تردد للساعة | 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 |
| العلبة | SSOP-20 |
| جهد التغذية | 3.0 V to 5.5 V (typical 5 V) |
| درجة حرارة التشغيل | 0C to +70C (commercial) |
| نوع التركيب | Surface Mount |
تكوين أطراف PIC16C712-04/SS
| دبوس 1 | RA2 — Digital I/O / AN2 analog input |
| دبوس 2 | RA3 — Digital I/O / AN3 analog input |
| دبوس 3 | RA4 — Digital I/O / T0CKI timer0 clock input |
| دبوس 4 | MCLR/VPP — Master clear reset / programming voltage input |
| دبوس 5 | VSS — Ground reference |
| دبوس 6 | RB0/INT — Digital I/O / external interrupt input |
| دبوس 7 | RB1 — Digital I/O |
| دبوس 8 | RB2 — Digital I/O |
| دبوس 9 | RB3 — Digital I/O |
| دبوس 10 | RB4 — Digital I/O |
| دبوس 11 | RB5 — Digital I/O |
| دبوس 12 | RB6 — Digital I/O / ICD clock |
| دبوس 13 | RB7 — Digital I/O / ICD data |
| دبوس 14 | VSS — Ground reference |
| دبوس 15 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| دبوس 16 | OSC1/CLKIN — Oscillator crystal input / external clock |
| دبوس 17 | RA0 — Digital I/O / AN0 analog input |
| دبوس 18 | RA1 — Digital I/O / AN1 analog input |
| دبوس 19 | VSS — Ground reference |
| دبوس 20 | VDD — Positive supply voltage |
التطبيقات النموذجية
PIC16C712-04/SS مناسب لـ 6 التطبيقs: 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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC16C712-04/SS — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | 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 |
أبرز الفروقات
- Industrial temperature grade available in same package (مقابلPIC16C712-04/SS (commercial))
- Flash memory migration path in same package (مقابلPIC16C712-04/SS (OTP EPROM))
- Faster 20 MHz clock with same peripheral set (مقابلPIC16C712-04/SS (4 MHz))
- Active lifecycle status vs obsolete target part (مقابلPIC16C712-04/SS (obsolete))
ملاحظات التصميم
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.
معلومات الامتثال
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.
