PIC16C712T-20/SS - 8-Bit 20MHz OTP MCU, 1.75KB | Microchip
Артикул: PIC16C712T-20/SS ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $3.42 | $3,42 |
| 10 | $3.08 | $30,80 |
| 100 | $2.74 | $274,00 |
| 500 | $2.46 | $1.230,00 |
| 1.000 | $2.21 | $2.210,00 |
PIC16C712T-20/SS Обзор
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripheral interfaces onto one die. The PIC16C712 belongs to the PIC® 16C family of 8-bit RISC microcontrollers, which sit within the broader taxonomy of microcontrollers -> embedded processors -> semiconductor ICs. OTP-based PIC MCUs are programmed once via a device programmer and retain their code without external memory, making them ideal for fixed-function commercial and industrial products where flash reprogrammability is not required.
Key features include 200 ns instruction execution time, 13 I/O pins, two 8-bit timers plus one 16-bit timer, watchdog timer with on-chip RC oscillator, power-on reset, brown-out detect, and in-circuit serial programming (ICSP) capability. The 8-bit ADC with 4 input channels supports 8-bit resolution suitable for basic sensor monitoring and potentiometer feedback applications.
The architecture uses a Harvard-style 14-bit instruction word with separate program and data buses, enabling deterministic single-cycle instruction execution. The 20-pin SSOP footprint is optimized for space-constrained applications where PCB area matters more than wide peripheral count.
Typical applications include consumer appliance control, HVAC thermostats, small motor control, battery chargers, security sensor interfaces, and low-cost industrial control modules. The OTP memory model suits high-volume fixed-code products where unit cost dominates over field upgradability.
When designing with this device, ensure the 5V supply rail is stable because the OTP version does not support ISP flash reprogramming in-circuit. Plan code carefully before burning the part, and always order production quantities with a margin for code-revision rework.
This page synthesizes distributor pricing, drop-in same-family and cross-brand alternatives, and practical design notes that go beyond what is printed in the manufacturer's datasheet.
Аналоги без доработки для PIC16C712T-20/SS — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с PIC16C712T-20/SS (тот же форм-фактор и посадочное место) — отличается по Package, Timers, Watchdog Timer, Program Memory Size, ADC.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC16C712-20/SS
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC16C712T-20I/SS
✅ Прямая замена✓ В наличии
$1.91 / шт.
Открыть даташит →PIC16C712T-20E/SS
✅ Прямая замена✓ В наличии
$2.5 / шт.
Открыть даташит →PIC16C712-20E/SS
✅ Прямая замена✓ В наличии
$4.2 / шт.
Открыть даташит →PIC16C711T-20I/SS
✅ Прямая замена✓ В наличии
$0.92 / шт.
Открыть даташит →PIC16C710T-20E/SS
✅ Прямая замена✓ В наличии
$2.18 / шт.
Открыть даташит →PIC16C712T-20/SS Максимальные параметры и электрические характеристики
| Core Architecture | PIC 8-bit RISC |
| Program Memory Size | 1.75 KB (1K x 14) |
| Program Memory Type | OTP (One-Time Programmable) |
| RAM | 128 bytes |
| Максимальная тактовая частота | 20 MHz |
| Instruction Cycle Time | 200 ns |
| Instruction Set | 35 single-word instructions |
| ADC | 4-channel, 8-bit |
| Timers | 2 x 8-bit + 1 x 16-bit |
| Capture/Compare/PWM | Yes (1 CCP module) |
| I/O Pins | 13 |
| Watchdog Timer | Yes (with on-chip RC) |
| Operating Voltage | 5 V |
| Рабочая температура | 0C to +70C (commercial) |
| Корпус | 20-pin SSOP (5.30 mm) |
| Тип монтажа | Surface Mount |
| ICSP (In-Circuit Serial Programming) | Yes |
| Brown-out Detect | Yes |
| Power-on Reset | Yes |
Конфигурация выводов PIC16C712T-20/SS
| Контакт 1 | MCLR/VPP — Master Clear reset input / programming voltage |
| Контакт 2 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Контакт 3 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Контакт 4 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Контакт 5 | RA3/AN3/VREF — Port A bit 3 / Analog input 3 / ADC voltage reference |
| Контакт 6 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| Контакт 7 | RA5/SS/AN4 — Port A bit 5 / SPI slave select / Analog input 4 |
| Контакт 8 | OSC1/CLKIN — Crystal oscillator input / external clock in |
| Контакт 9 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Контакт 10 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator output / Timer 1 clock in |
| Контакт 11 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer 1 oscillator in / CCP2 |
| Контакт 12 | RC2/CCP1 — Port C bit 2 / Capture/Compare/PWM 1 |
| Контакт 13 | RC3 — Port C bit 3 |
| Контакт 14 | RB0/INT — Port B bit 0 / External interrupt |
| Контакт 15 | RB1 — Port B bit 1 |
| Контакт 16 | RB2 — Port B bit 2 |
| Контакт 17 | RB3 — Port B bit 3 |
| Контакт 18 | RB4 — Port B bit 4 |
| Контакт 19 | RB5 — Port B bit 5 |
| Контакт 20 | VSS — Ground |
Типичное применение
PIC16C712T-20/SS подходит для 6 применениеs: HVAC Thermostat and Fan Control, Small Appliance Control Board, Battery Charger Controller, Security Sensor Interface Panel, Low-Cost Power Tool Speed Controller, Consumer White-Goods Display Driver.
HVAC Thermostat and Fan Control
The PIC16C712T-20/SS fits HVAC thermostat and fan-control boards because its 4-channel 8-bit ADC can read room temperature (via thermistor divider), setpoint, humidity sensor, and indoor airflow feedback simultaneously. The 1.75 KB OTP memory is sufficient for typical HVAC state machines that handle multi-speed fan curves, hysteresis-based compressor control, and weekly schedule logic. The 20 MHz core runs the control loop at sub-millisecond cadence, ensuring tight temperature regulation without audible relay chatter. At 5 V supply and 0C to +70C operating range, it integrates easily with standard thermostat backplates.
Рекомендуется
Small Appliance Control Board
The PIC16C712T-20/SS is ideal for coffee makers, toaster ovens, and rice cooker control boards where a fixed OTP program handles keypad scan, timer countdown, and heater PWM. The CCP module generates the PWM signal driving a TRIAC or MOSFET gate, while the 8-bit ADC reads the NTC thermistor for closed-loop temperature control. Its OTP memory model prevents accidental firmware corruption in noisy kitchen environments. At 20 MHz the MCU can multiplex 7-segment displays and run a 100 Hz control loop without CPU loading concerns.
Рекомендуется
Battery Charger Controller
For sealed lead-acid or NiMH charger modules, the PIC16C712T-20/SS provides the 4-channel ADC inputs needed to monitor battery voltage, charge current, temperature, and end-of-charge slope. The CCP module drives a buck-converter PWM at up to 20 kHz with adequate resolution for current-mode control. The 1.75 KB OTP memory fits CC-CV algorithm code plus safety timers. With brown-out detect and watchdog timer integrated, the design meets basic IEC safety expectations for consumer chargers.
Рекомендуется
Security Sensor Interface Panel
The PIC16C712T-20/SS suits PIR motion-sensor interface panels where 4 ADC channels read ambient light, tamper switch, battery voltage, and a calibration trimmer, while discrete I/O scan reed switches and drive an alarm relay. The 35-instruction PIC16C core keeps firmware under 1 KB even with debounce and event-logging features. The OTP memory protects alarm-system code from being reverse-engineered. Brown-out detect ensures clean state-recovery after a power glitch.
Рекомендуется
Low-Cost Power Tool Speed Controller
For corded drills, screwdrivers, and similar brushed-DC tools, the PIC16C712T-20/SS controls motor speed via the CCP PWM output driving a MOSFET half-bridge, while the ADC reads back EMF sensing for closed-loop RPM regulation. The 20 MHz core supports a 25 kHz PWM well above audible range, eliminating motor whine. With 13 I/O pins available, the same MCU scans trigger switches, forward/reverse direction logic, and LED indicators. OTP memory locks proprietary speed curves at production time.
Рекомендуется
Consumer White-Goods Display Driver
The PIC16C712T-20/SS drives multiplexed LED or VFD displays in washing machines, microwave ovens, and dishwashers, using the CCP module to time the multiplex scan while software debounces the keypad matrix. The 8-bit ADC reads the rotary encoder position for user input. With 1.75 KB OTP memory the same part type fits multiple product SKUs by re-burning only the program memory. Its 5 V supply matches standard white-goods power rails without extra regulators.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC16C712T-20/SS — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC16C712-20/SS | PIC16C712T-20I/SS | PIC16C712T-20E/SS | PIC16C712-20E/SS | PIC16C711T-20I/SS | PIC16C710T-20E/SS |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-20 (5.30 mm) | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same |
| Core / Architecture | PIC16C 8-bit RISC, 35 instructions | PIC16C 8-bit RISC - same | PIC16C 8-bit RISC - same | PIC16C 8-bit RISC - same | PIC16C 8-bit RISC - same | PIC16C 8-bit RISC - same | PIC16C 8-bit RISC - same |
| Max Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Program Memory | 1.75 KB OTP (1K x 14) | 1.75 KB OTP - same | 1.75 KB OTP - same | 1.75 KB OTP - same | 1.75 KB OTP - same | 1.75 KB OTP - same | 0.875 KB OTP - 50% less |
| RAM | 128 bytes | 128 bytes - same | 128 bytes - same | 128 bytes - same | 128 bytes - same | 128 bytes - same | 36 bytes - 72% less |
| ADC | 4-channel, 8-bit | 4-channel 8-bit - same | 4-channel 8-bit - same | 4-channel 8-bit - same | 4-channel 8-bit - same | No ADC | No ADC |
| Operating Temperature | 0C to +70C (commercial) | 0C to +70C - same | -40C to +85C (industrial) | -40C to +125C (extended) | -40C to +125C (extended) | -40C to +85C (industrial) | -40C to +125C (extended) |
Ключевые отличия
- Industrial temperature grade with identical pinout (против PIC16C712T-20I/SS)
- Extended temperature grade for harsh environments (против PIC16C712T-20E/SS)
- Family member with reduced peripheral set (против PIC16C711T-20I/SS)
Заметки по проектированию
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 20) and a bulk 10 uF tantalum or aluminum capacitor on the same 5 V rail. The PIC16C712's brown-out detect threshold is approximately 4.0 V; ensure the upstream regulator's tolerance does not let VDD sag below this during transient load steps, otherwise the MCU will reset unexpectedly. For battery-backed applications, hold MCLR low during power transitions to avoid code-execution corruption of the OTP memory.
Route the crystal traces (OSC1/OSC2) symmetrically with a ground guard ring or ground pour underneath. Keep the crystal within 5 mm of pins 8 and 9, and avoid routing digital signal traces directly underneath the crystal traces. For ICSP programming, dedicate RB6 and RB7 to clock/data and avoid placing series resistors above 220 ohm on these pins - high resistance interferes with in-circuit programming timing.
OTP memory can be programmed only once - there is no field upgrade path. Always burn a known-good image with verified checksum, and order production quantities with at least 5 to 10 percent margin for code-revision rework. Do not confuse the PIC16C712 (with ADC) with the PIC16C711 (no ADC) or PIC16C710 (less memory); both share the same SSOP-20 footprint but have different peripheral sets and will silently fail firmware if substituted without code review.
Информация о соответствии
PIC16C712 is an obsolete OTP PIC16C-family part; RoHS/REACH compliance documentation is not consistently published by Microchip for this legacy family. AEC-Q100 does not apply to commercial-grade MCUs. Engineers requiring RoHS/REACH evidence should request a compliance certificate from the distributor or migrate to a flash-based PIC16F successor.
