PIC16C662-10I/P - 8-bit OTP MCU, 7KB ROM, 176B RAM, 33 I/O | Microchip
MPN: PIC16C662-10I/P ✗ סוף ייצורPIC16C662-10I/P סקירה
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.
חלופות תחליף ישיר עבור PIC16C662-10I/P — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC16C662-10I/P (אותו גורם צורה וטביעת רגל) — שונים ב Package, Mounting Type, Program Memory Type, Instruction Set, Architecture.
PIC16C662-10/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C662-04I/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C662-10E/L
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16F877A-I/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C66-20I/P
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16C662-10I/P דירוגים מרביים ומאפיינים חשמליים
| 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 |
| תדר שעון מקסימלי | 10 MHz |
| Instruction Cycle Time | 200 ns |
| Supply Voltage (VDD) | 5 V nominal (range per datasheet) |
| Number of I/O Pins | 33 |
| מארז | PDIP-40 (0.600 inch, 15.24 mm) |
| סוג הרכבה | Through-Hole |
| טווח טמפרטורת פעולה | -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 |
תצורת פינים של PIC16C662-10I/P
| פין 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| פין 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| פין 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| פין 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| פין 5 | RA3/AN3/VREF — PORTA bit 3 / Analog input 3 / ADC reference |
| פין 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| פין 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| פין 8 | RE0/RD/AN5 — PORTE bit 0 / Parallel-port read / Analog input 5 |
| פין 9 | RE1/WR/AN6 — PORTE bit 1 / Parallel-port write / Analog input 6 |
| פין 10 | RE2/CS/AN7 — PORTE bit 2 / Parallel-port chip-select / Analog input 7 |
| פין 11 | VDD — Positive supply voltage (+5 V) |
| פין 12 | VSS — Ground |
| פין 13 | OSC1/CLKI — Oscillator input / external clock in |
| פין 14 | OSC2/CLKO — Oscillator output / clock out |
| פין 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| פין 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 PWM |
| פין 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| פין 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| פין 19 | RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0 |
| פין 20 | RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1 |
| פין 21 | RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2 |
| פין 22 | RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3 |
| פין 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| פין 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| פין 25 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| פין 26 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| פין 27 | RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4 |
| פין 28 | RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5 |
| פין 29 | RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6 |
| פין 30 | RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7 |
| פין 31 | VSS — Ground |
| פין 32 | VDD — Positive supply voltage (+5 V) |
| פין 33 | RB0/INT — PORTB bit 0 / External interrupt 0 |
| פין 34 | RB1 — PORTB bit 1 |
| פין 35 | RB2 — PORTB bit 2 |
| פין 36 | RB3/PGM — PORTB bit 3 / Low-voltage programming |
| פין 37 | RB4 — PORTB bit 4 |
| פין 38 | RB5 — PORTB bit 5 |
| פין 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| פין 40 | RB7/PGD — PORTB bit 7 / ICSP data |
יישומים טיפוסיים
PIC16C662-10I/P מתאים עבור 6 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC16C662-10I/P — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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) |
מבדילים עיקריים
- Industrial temperature grade with full -40C to +85C range (לעומתPIC16C662-10/P)
- Flash-based in-field reprogrammability in same footprint (לעומתPIC16F877A-I/P)
- Higher clock speed grade for time-critical loops (לעומתPIC16C662-04I/P)
הערות תכנון
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.
מידע על תאימות
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.
