PIC16C662-10I/P - 8-bit OTP MCU, 7KB ROM, 176B RAM, 33 I/O | Microchip
N.º da peça: PIC16C662-10I/P ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.85 | $4,85 |
| 10 | $4.36 | $43,60 |
| 100 | $3.88 | $388,00 |
| 500 | $3.49 | $1.745,00 |
| 1.000 | $3.1 | $3.100,00 |
PIC16C662-10I/P Visão geral
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.
Alternativas drop-in para PIC16C662-10I/P — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16C662-10I/P (mesmo formato e footprint) — diferindo em Package, Mounting Type, Program Memory Type, Instruction Set, Architecture.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16C662-10/P
✅ Drop-In✓ Em estoque
$5.3 / unidade
Ver ficha técnica →PIC16C662-04I/P
✅ Drop-In✓ Em estoque
$5.07 / unidade
Ver ficha técnica →PIC16C662-10E/L
✅ Drop-In✓ Em estoque
$9.85 / unidade
Ver ficha técnica →PIC16F877A-I/P
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →PIC16C66-20I/P
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16C662-10I/P Classificações máximas e características elétricas
| 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 |
| Frequência máxima de clock | 10 MHz |
| Instruction Cycle Time | 200 ns |
| Supply Voltage (VDD) | 5 V nominal (range per datasheet) |
| Number of I/O Pins | 33 |
| Encapsulamento | PDIP-40 (0.600 inch, 15.24 mm) |
| Tipo de montagem | Through-Hole |
| Faixa de temperatura de operação | -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 |
Configuração de pinos do PIC16C662-10I/P
| Pino 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| Pino 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Pino 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Pino 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| Pino 5 | RA3/AN3/VREF — PORTA bit 3 / Analog input 3 / ADC reference |
| Pino 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pino 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| Pino 8 | RE0/RD/AN5 — PORTE bit 0 / Parallel-port read / Analog input 5 |
| Pino 9 | RE1/WR/AN6 — PORTE bit 1 / Parallel-port write / Analog input 6 |
| Pino 10 | RE2/CS/AN7 — PORTE bit 2 / Parallel-port chip-select / Analog input 7 |
| Pino 11 | VDD — Positive supply voltage (+5 V) |
| Pino 12 | VSS — Ground |
| Pino 13 | OSC1/CLKI — Oscillator input / external clock in |
| Pino 14 | OSC2/CLKO — Oscillator output / clock out |
| Pino 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| Pino 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 PWM |
| Pino 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Pino 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pino 19 | RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0 |
| Pino 20 | RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1 |
| Pino 21 | RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2 |
| Pino 22 | RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3 |
| Pino 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pino 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pino 25 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Pino 26 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Pino 27 | RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4 |
| Pino 28 | RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5 |
| Pino 29 | RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6 |
| Pino 30 | RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7 |
| Pino 31 | VSS — Ground |
| Pino 32 | VDD — Positive supply voltage (+5 V) |
| Pino 33 | RB0/INT — PORTB bit 0 / External interrupt 0 |
| Pino 34 | RB1 — PORTB bit 1 |
| Pino 35 | RB2 — PORTB bit 2 |
| Pino 36 | RB3/PGM — PORTB bit 3 / Low-voltage programming |
| Pino 37 | RB4 — PORTB bit 4 |
| Pino 38 | RB5 — PORTB bit 5 |
| Pino 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pino 40 | RB7/PGD — PORTB bit 7 / ICSP data |
Aplicações típicas
PIC16C662-10I/P é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16C662-10I/P — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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) |
Principais diferenciais
- Industrial temperature grade with full -40C to +85C range (vs PIC16C662-10/P)
- Flash-based in-field reprogrammability in same footprint (vs PIC16F877A-I/P)
- Higher clock speed grade for time-critical loops (vs PIC16C662-04I/P)
Notas de projeto
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.
Informações de conformidade
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.
