PIC16C662-10I/P - 8-bit OTP MCU, 7KB ROM, 176B RAM, 33 I/O | Microchip
MPN: PIC16C662-10I/P ✗ پایان تولیدPIC16C662-10I/P نمای کلی
An 8-bit microcontroller (MCU) is a programmable embedded processor that executes one byte (8 bits) of data per instruction cycle, integrating CPU core, RAM, ROM/Flash, timers, communication peripherals, and I/O into a single IC. Within the embedded systems hierarchy it sits below 32-bit MCUs in complexity but above fixed-function logic ICs in flexibility. PIC microcontrollers use a RISC-style Harvard architecture with separate program and data buses, making instruction fetch and data access fully parallel, which delivers deterministic throughput and excellent code density for control applications.
Key features include 7 KB (4K x 14) one-time-programmable program memory for firmware storage, 176 bytes of general-purpose SRAM, 33 bidirectional digital I/O pins arranged across multiple ports, an 8-bit timer/counter with prescaler, watchdog timer, power-on reset, brown-out detect, and low-power SLEEP/idle modes. The 40-pin PDIP footprint gives breadboard-friendly through-hole mounting for prototyping and industrial designs.
The PIC16C662-10I/P uses Microchip's enhanced mid-range core (14-bit instruction word) with hardware stack and interrupt controller supporting both edge- and level-triggered external interrupts. The 10 MHz oscillator at 5 V yields a 200 ns instruction cycle (Fosc/4), enough for routine control loops, keypad scanning, LCD driving, and UART bit-banging.
Typical applications include industrial control panels, HVAC zone controllers, security alarm panels, keypad / LCD user interfaces, motor-driver front ends, low-end appliance controllers, and legacy embedded systems where OTP-based microcontrollers are still preferred for cost or firmware-stability reasons. Its 33 I/O count is well-suited to scanning 4x4 or 5x5 matrix keypads and 4-digit seven-segment displays.
When designing with this part, note that OTP memory cannot be rewritten in-circuit - production programming must be done before or during board assembly. Reserve a single ICSP header (RB6/RB7 pins) for factory programming; consider migrating to the flash-based PIC16F87x family if in-field firmware updates are required. Decouple VDD/VSS close to the pins with a 100 nF ceramic plus a 10 uF bulk cap, and use a series resistor on MCLR if in-circuit programming is also needed in production test.
This page synthesizes distributor availability, exact 40-pin PDIP drop-in alternatives, and practical OTP vs Flash migration design notes that are not found on the bare manufacturer datasheet, helping engineers evaluate the PIC16C662-10I/P for both new designs and legacy maintenance.
جایگزین‌های drop-in برای PIC16C662-10I/P — 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 PIC16C662-10I/P (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Mounting Type, Program Memory Type, Instruction Set, Architecture.
PIC16C662-10/P
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C662-04I/P
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C662-10E/L
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16F877A-I/P
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C66-20I/P
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16C662-10I/P حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core | PIC 8-bit (Enhanced Mid-Range, 14-bit instruction word) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| Data RAM | 176 bytes |
| حداکثر فرکانس کلاک | 10 MHz |
| Instruction Cycle Time | 200 ns |
| Supply Voltage (VDD) | 5 V nominal (range per datasheet) |
| Number of I/O Pins | 33 |
| بسته‌بندی | PDIP-40 (0.600 inch, 15.24 mm) |
| نوع نصب | Through-Hole |
| محدوده دمای کاری | -40C to +85C (Industrial grade) |
| Temperature Grade | Industrial (I) |
| Number of Terminals | 40 |
| Terminal Form | Through-Hole |
| Package Code | DIP-40 |
| Architecture | RISC, Harvard |
| Instruction Set | 35 single-word instructions |
پیکربندی پین PIC16C662-10I/P
| پین 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| پین 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| پین 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| پین 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| پین 5 | RA3/AN3/VREF — PORTA bit 3 / Analog input 3 / ADC reference |
| پین 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پین 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| پین 8 | RE0/RD/AN5 — PORTE bit 0 / Parallel-port read / Analog input 5 |
| پین 9 | RE1/WR/AN6 — PORTE bit 1 / Parallel-port write / Analog input 6 |
| پین 10 | RE2/CS/AN7 — PORTE bit 2 / Parallel-port chip-select / Analog input 7 |
| پین 11 | VDD — Positive supply voltage (+5 V) |
| پین 12 | VSS — Ground |
| پین 13 | OSC1/CLKI — Oscillator input / external clock in |
| پین 14 | OSC2/CLKO — Oscillator output / clock out |
| پین 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| پین 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 PWM |
| پین 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| پین 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| پین 19 | RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0 |
| پین 20 | RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1 |
| پین 21 | RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2 |
| پین 22 | RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3 |
| پین 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پین 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| پین 25 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| پین 26 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| پین 27 | RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4 |
| پین 28 | RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5 |
| پین 29 | RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6 |
| پین 30 | RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7 |
| پین 31 | VSS — Ground |
| پین 32 | VDD — Positive supply voltage (+5 V) |
| پین 33 | RB0/INT — PORTB bit 0 / External interrupt 0 |
| پین 34 | RB1 — PORTB bit 1 |
| پین 35 | RB2 — PORTB bit 2 |
| پین 36 | RB3/PGM — PORTB bit 3 / Low-voltage programming |
| پین 37 | RB4 — PORTB bit 4 |
| پین 38 | RB5 — PORTB bit 5 |
| پین 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| پین 40 | RB7/PGD — PORTB bit 7 / ICSP data |
کاربردهای معمول
PIC16C662-10I/P مناسب است برای 6 کاربردs: Industrial Control Panel Keypad Interface, HVAC Zone Controller, Security Alarm Panel, Appliance Control Board, Motor Driver Front-End Controller, Legacy Embedded System Maintenance.
Industrial Control Panel Keypad Interface
The PIC16C662-10I/P fits industrial control panel keypad interfaces because its 33 digital I/O pins easily scan a 4x4 or 5x5 matrix keypad plus drive up to 4-digit seven-segment displays or a character LCD. With 7 KB of OTP program memory and a 200 ns instruction cycle at 10 MHz, the MCU handles debouncing, key-encoding, and menu navigation loops in real time. Industrial temperature grade (-40C to +85C) ensures reliable operation in factory cabinets and process-control enclosures.
پیشنهادی
HVAC Zone Controller
The PIC16C662-10I/P is well-suited to HVAC zone controllers where deterministic timing, multiple sensor inputs, and relay actuation are required. Its 33 I/O supports multiple temperature sensors (via ADC channels shared with I/O), damper actuator relays, and a UART link to a central HVAC controller. The industrial-grade operating temperature range allows mounting near heating/cooling ducts without thermal derating, and the 10 MHz clock executes the PID loop fast enough for sub-second damper response.
پیشنهادی
Security Alarm Panel
For security alarm panels, the PIC16C662-10I/P provides the polling throughput and I/O count to monitor dozens of normally-closed loop zones while driving a keypad, status LEDs, and a siren driver. Its 176 B RAM is adequate for storing zone state and event buffers. OTP memory protects the firmware from tampering in deployed panels, and the -40C to +85C industrial temperature grade handles unheated garage or warehouse installations.
پیشنهادی
Appliance Control Board
The PIC16C662-10I/P serves well as the brain of a washing machine, dishwasher, or microwave oven control board, where 33 I/O drive a multiplexed display, keypad, buzzer, motor triac drivers, and sensor inputs. Its 7 KB OTP accommodates state-machine firmware for cycle sequencing, and the 200 ns instruction cycle handles real-time triac zero-crossing detection for proportional heating control. Industrial temperature grade withstands the thermal environment inside appliance housings.
پیشنهادی
Motor Driver Front-End Controller
As a motor-driver front-end, the PIC16C662-10I/P generates PWM, direction logic, and current-limit signaling for an external H-bridge such as the L298 or DRV8871. Its hardware timers produce precise PWM up to several kHz while the CPU supervises speed feedback and fault handling. With 33 I/O, the MCU can coordinate multiple motor axes plus encoder inputs, making it suitable for small CNC, robotics, or conveyor-belt applications.
پیشنهادی
Legacy Embedded System Maintenance
The PIC16C662-10I/P remains the only Microchip production option for legacy systems whose firmware was written against this exact OTP part, where regulators mandate drop-in component sourcing and re-PCB redesign is impossible. With 46,720+ pieces reported in third-party distributor stock as of 2026-09, the supply chain is still active for repair and refurbishment. The NRND status means no new designs should target it; existing designs should migrate to PIC16F877A-I/P at next board revision.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC16C662-10I/P — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC16C662-10/P | PIC16C662-04I/P | PIC16C662-10E/L | PIC16F877A-I/P | PIC16C66-20I/P |
|---|---|---|---|---|---|---|
| Package | PDIP-40 | PDIP-40 (same) | PDIP-40 (same) | LCC-44 (windowed EPROM, similar) | PDIP-40 (same) | PDIP-40 (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP, 7 KB (4K x 14) | OTP, 7 KB | OTP, 7 KB | Windowed EPROM, 7 KB | Flash, 14 KB | OTP, 8 KB |
| Maximum Clock Frequency | 10 MHz | 10 MHz | 4 MHz | 10 MHz | 20 MHz | 20 MHz |
| Data RAM | 176 bytes | 176 bytes | 176 bytes | 176 bytes | 368 bytes | 368 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| Temperature Grade | Industrial -40C to +85C | Commercial 0C to +70C | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C | Industrial -40C to +85C |
| In-Circuit Reprogrammable | No (OTP) | No (OTP) | No (OTP) | Yes (windowed UV erase) | Yes (flash) | No (OTP) |
تفاوت‌های کلیدی
- Industrial temperature grade with full -40C to +85C range (در مقابلPIC16C662-10/P)
- Flash-based in-field reprogrammability in same footprint (در مقابلPIC16F877A-I/P)
- Higher clock speed grade for time-critical loops (در مقابلPIC16C662-04I/P)
یادداشت‌های طراحی
PIC16C662-10I/P uses OTP memory that cannot be rewritten. Estimate: assuming a typical 5V supply and 33 I/O sourcing 10 mA each, total source current reaches 330 mA - well above the 200 mA per-port spec; segment outputs into multiple ports to avoid exceeding the absolute maximum. Always include a 100 nF ceramic decoupling cap on each VDD/VSS pair (pin 11/12 and pin 32/31) and a 10 uF bulk cap on the supply rail.
Reserve RB6/RB7 as the ICSP clock/data programming pins (pin 39/40) - do not strap them to loads that prevent in-circuit programming. Add a 10 kohm pull-up to MCLR (pin 1) and route the ICSP connector near the MCU so production programming does not require manual rework. For the 40-pin PDIP footprint, leave 0.1 inch (2.54 mm) pad pitch and 0.6 inch row spacing to accept standard DIP sockets and breadboards during prototyping.
Do not exceed the VDD absolute maximum of 7 V or drop below 2.0 V (per datasheet DS30402D). Brown-out reset must be enabled in the configuration fuses for industrial applications where the supply may sag during motor inrush. MCLR must NOT be left floating - a floating MCLR pin produces erratic resets. Configure the watchdog timer in software if firmware deadlock could damage the controlled appliance.
The 40-pin PDIP package has typical theta_JA of approximately 50 C/W (estimated from package geometry). Estimated: at 5 V supply with 33 I/O sourcing 5 mA each, internal dissipation stays below 250 mW and the junction rise above 25C ambient is approximately 12C - well within the -40C to +85C industrial grade. For closed enclosures with no airflow, derate the ambient by 10C or reduce I/O source current.
اطلاعات انطباق
RoHS / lead-free status for the exact PIC16C662-10I/P date code is not explicitly stated in the provided web snippets. PIC16C66x OTP PDIP lots include both RoHS and non-RoHS date codes; confirm by reading the shipping-tube label or contacting the distributor before placing RoHS-bound orders. AEC-Q100 is not applicable for this non-automotive legacy industrial MCU.
