PIC16C65A-20E/P - 8-Bit OTP MCU, 20MHz, 7KB, 40-PDIP | Microchip
Артикул: PIC16C65A-20E/P ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $9.86 | $9,86 |
| 10 | $9.21 | $92,10 |
| 100 | $8.55 | $855,00 |
| 500 | $7.74 | $3.870,00 |
| 1.000 | $6.92 | $6.920,00 |
PIC16C65A-20E/P Обзор
An 8-bit OTP microcontroller is a single-chip computer that integrates a CPU, program memory, RAM, peripherals, and I/O on one silicon die. The OTP variant uses One-Time Programmable EPROM for firmware storage, balancing low unit cost with rapid prototyping flexibility, sitting between mask-ROM (cheapest at volume) and Flash (rewritable). The PIC16C65A belongs to the Microchip PIC architecture family, a hierarchy of RISC microcontrollers -> 8-bit microcontrollers -> embedded microcontrollers -> integrated circuits.
Key features include 20MHz maximum clock (5 MIPS throughput), 4K x 14 word OTP program memory, 192 bytes of data RAM, 33 I/O pins, a 10-bit ADC with 8 input channels, integrated USART for serial communication, and an MSSP module supporting both SPI and I2C. Power consumption is exceptionally low: 15µA typical at 5V/4MHz and 1µA typical at 3V/32kHz, making the part suitable for battery-backed industrial control. The device supports in-circuit serial programming and operates across commercial, industrial, and extended temperature grades.
The PIC16C65A uses a 14-bit wide instruction word with a RISC core offering 35 single-word instructions, of which all are single-cycle except program branches (two-cycle). Its Harvard architecture separates program and data buses, enabling simultaneous instruction fetch and data access. The integrated 10-bit ADC delivers 8 analog inputs for sensor conditioning, while Capture/Compare/PWM modules support motor control and timing applications.
Typical applications include industrial automation controllers, automotive body and climate modules, motor control, sensor signal conditioning, embedded serial communication bridges, and legacy equipment retrofits. The -20E temperature grade (Extended, -40C to +125C) makes it especially suited for under-hood automotive and harsh industrial environments where commercial-grade devices cannot survive.
When designing with this part, note that the OTP program memory cannot be reprogrammed - code must be fully validated before burning. Brown-out detection and the Watchdog Timer must be properly configured in CONFIG fuses to ensure reliable reset behavior in noisy industrial environments. Decoupling VDD with 100nF ceramic capacitors near each supply pin is recommended.
This page synthesizes distributor pricing, drop-in alternatives, comparison tables, and practical design notes not found in the manufacturer datasheet alone - giving engineers a faster path from MPN to schematic.
Аналоги без доработки для PIC16C65A-20E/P — 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 PIC16C65A-20E/P (тот же форм-фактор и посадочное место) — отличается по Package, Program Memory Size, Core Architecture, Timers, Program Memory Type.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC16C65A-20/P
✅ Прямая замена✓ В наличии
$3.85 / шт.
Открыть даташит →PIC16C65A-04E/P
✅ Прямая замена✓ В наличии
$4.85 / шт.
Открыть даташит →PIC16C65A-04/P
✅ Прямая замена✓ В наличии
$8.1 / шт.
Открыть даташит →PIC16C65A-10/PQ
✅ Прямая замена✓ В наличии
$6.1 / шт.
Открыть даташит →PIC16C64A-20E/P
✅ Прямая замена✓ В наличии
$5.1 / шт.
Открыть даташит →PIC16C74A-20E/P
✅ Прямая замена✓ В наличии
$6.1 / шт.
Открыть даташит →PIC16C711-04/P
✅ Прямая замена✓ В наличии
$2.54 / шт.
Открыть даташит →PIC16C65A-20E/P Максимальные параметры и электрические характеристики
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Instruction Word Width | 14-bit |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 7 KB (4K x 14 words) |
| Data RAM | 192 bytes |
| Data EEPROM | Not present on this part |
| Максимальная тактовая частота | 20 MHz |
| CPU Performance | 5 MIPS |
| I/O Pins | 33 |
| ADC | 10-bit, 8 channels |
| Timers | 3 (TMR0, TMR1, TMR2) |
| Capture/Compare/PWM | Yes (CCP module) |
| Serial Interfaces | USART, SSP/SPI, I2C (MSSP) |
| Корпус | 40-pin PDIP (0.600 inch, 15.24mm) |
| Temperature Grade | Extended (-40C to +125C) |
| Тип монтажа | Through-Hole |
| Уровень MSL | Not applicable for PDIP |
| Статус RoHS | Non-compliant (contains lead) |
| Programming Method | In-Circuit Serial Programming (ICSP) |
| Brown-out Reset | Yes |
| Watchdog Timer | Yes (software enabled) |
Конфигурация выводов PIC16C65A-20E/P
| Контакт 1 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| Контакт 2 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| Контакт 3 | RA2/AN2 — PORTA bit 2 / Analog input channel 2 |
| Контакт 4 | RA3/AN3/VREF — PORTA bit 3 / Analog input 3 / Voltage reference |
| Контакт 5 | RA4/T0CKI — PORTA bit 4 / Timer 0 clock input (open-drain) |
| Контакт 6 | RE2/CS — PORTE bit 2 / Chip select |
| Контакт 7 | RE1/WR/AN6 — PORTE bit 1 / Write strobe / Analog input 6 |
| Контакт 8 | RE0/RD/AN5 — PORTE bit 0 / Read strobe / Analog input 5 |
| Контакт 9 | OSC1/CLKIN — Crystal oscillator input / external clock in |
| Контакт 10 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Контакт 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer 1 oscillator out / clock in |
| Контакт 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer 1 oscillator in / CCP2 |
| Контакт 13 | RC2/CCP1 — PORTC bit 2 / Capture Compare PWM 1 |
| Контакт 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Контакт 15 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Контакт 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| Контакт 17 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Контакт 18 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Контакт 19 | VSS — Ground reference |
| Контакт 20 | VDD — Positive supply voltage |
| Контакт 21 | RB0/INT — PORTB bit 0 / External interrupt |
| Контакт 22 | RB1 — PORTB bit 1 |
| Контакт 23 | RB2 — PORTB bit 2 |
| Контакт 24 | RB3 — PORTB bit 3 |
| Контакт 25 | RB4 — PORTB bit 4 (interrupt-on-change) |
| Контакт 26 | RB5 — PORTB bit 5 (interrupt-on-change) |
| Контакт 27 | RB6/PGC — PORTB bit 6 / In-circuit serial programming clock |
| Контакт 28 | RB7/PGD — PORTB bit 7 / In-circuit serial programming data |
| Контакт 29 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| Контакт 30 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| Контакт 31 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| Контакт 32 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| Контакт 33 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| Контакт 34 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| Контакт 35 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| Контакт 36 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| Контакт 37 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| Контакт 38 | MCLR/VPP — Master clear reset / Programming voltage input |
| Контакт 39 | VSS — Ground reference (second VSS pin) |
| Контакт 40 | VDD — Positive supply voltage (second VDD pin) |
Типичное применение
PIC16C65A-20E/P подходит для 6 применениеs: Automotive Body Control Modules, Industrial Sensor Conditioning & Logging, Motor Control and PWM Drives, Legacy Serial Communication Bridges, HVAC Climate Control Panels, Embedded Test and Measurement Fixtures.
Automotive Body Control Modules
The PIC16C65A-20E/P's Extended -40C to +125C temperature grade, integrated 10-bit ADC, 33 I/O pins, and USART make it a strong fit for automotive body controllers (door modules, seat controllers, climate panels). Its 5 MIPS throughput handles multiplexed LIN/CAN bridges and switch debouncing. The 25 mA sink/source on each pin drives LEDs, relays, and small solenoids without external drivers. The 20 MHz clock and PWM module support motor and lighting fade control. In-circuit serial programming allows field firmware updates via the OBD port, though OTP limits this to blank devices. The 40-PDIP package is through-hole-friendly for aftermarket replacement.
Рекомендуется
Industrial Sensor Conditioning & Logging
Industrial sensor nodes use the PIC16C65A-20E/P's 10-bit ADC with 8 input channels to sample strain gauges, thermistors, pressure transducers, and 4-20 mA loops. The 192-byte RAM and USART enable buffered logging to RS-485 networks at 9600-115200 baud. Its 5 MIPS core runs simple moving-average filters and threshold alerts in firmware without an external DSP. The Extended temperature rating supports outdoor cabinet installations where temperatures swing seasonally. Brown-out reset and watchdog timer keep the device recoverable in electrically noisy factory environments where motor contactors switch nearby.
Рекомендуется
Motor Control and PWM Drives
The PIC16C65A-20E/P's Capture/Compare/PWM module and 20 MHz instruction rate make it suitable for brushed DC motor control, stepper sequencing, and small BLDC commutation. Its PWM resolution supports up to 10-bit duty cycles at moderate switching frequencies, and the integrated 10-bit ADC reads back current-sense amplifiers for closed-loop torque control. The 33 I/O pins drive H-bridge gates directly, with optional dead-time generation via firmware. The Extended temperature grade supports under-hood fan and pump controllers in automotive applications.
Рекомендуется
Legacy Serial Communication Bridges
Bridging between legacy RS-232, RS-485, and modern SPI/I2C peripherals is a classic strength of the PIC16C65A-20E/P. Its USART module handles asynchronous serial at up to 1.25 Mbaud at 20 MHz, while the MSSP module concurrently services SPI or I2C peripherals. Embedded firmware can implement protocol converters, packet formatters, and Modbus RTU slaves - all within 7 KB of OTP and 192 bytes of RAM. The Extended temperature grade suits factory floor installations where ambient temperatures exceed 70C near machinery.
Рекомендуется
HVAC Climate Control Panels
HVAC control panels leverage the PIC16C65A-20E/P's 10-bit ADC for thermistor temperature sensing, its PWM module for fan speed control and damper actuation, and its 33 I/O pins for keypads, displays, and relay drivers. The Extended temperature grade supports attic-mounted equipment where ambient reaches 70C+ during summer peaks. Low power consumption (15 µA at 5V/4 MHz) keeps standby draw minimal. The 40-PDIP through-hole package simplifies hand-soldered prototyping and field repairs on legacy systems still in service.
Рекомендуется
Embedded Test and Measurement Fixtures
Production test fixtures and bench instruments frequently use the PIC16C65A-20E/P for go/no-go testers, cable continuity checkers, and calibration rigs. The 10-bit ADC measures analog stimulus responses; the USART reports pass/fail results to a host PC; the I/O pins drive LEDs and buzzer indicators. With 7 KB OTP, production code is locked-in and tamper-resistant. The Extended temperature range supports lab environments that occasionally exceed 70C near ovens or environmental chambers. The PIC16C6X instruction set is well-documented and supported by Microchip's legacy MPLAB toolchain.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC16C65A-20E/P — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC16C65A-20/P | PIC16C65A-04E/P | PIC16C65A-04/P | PIC16C74A-20E/P | PIC16C711-04/P |
|---|---|---|---|---|---|---|
| Package | 40-PDIP (0.600 inch) | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Clock Frequency | 20 MHz | 20 MHz | 4 MHz | 4 MHz | 20 MHz | 4 MHz |
| Program Memory | 7 KB OTP (4K x 14) | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB Flash (rewritable) | 1.75 KB OTP |
| Data RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 68 bytes |
| ADC | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 8-bit, 4 channels |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 13 |
| Temperature Grade | Extended (-40C to +125C) | Commercial (0C to +70C) | Extended (-40C to +125C) | Commercial (0C to +70C) | Extended (-40C to +125C) | Commercial (0C to +70C) |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
| Approx. Qty-1 Price (2026-09-17) | $9.86 | $8.69 (commercial grade, ~12% lower) | $8.55 (lower speed) | $7.74 (commercial grade, lower speed) | $9.20 (Flash variant) | $6.40 (smaller memory) |
Ключевые отличия
- Extended -40C to +125C temperature grade (против PIC16C65A-20/P)
- 20 MHz / 5 MIPS throughput (против PIC16C65A-04E/P)
- Integrated 10-bit ADC with 8 channels (против PIC16C711-04/P)
- Industry-standard PIC16C6X compatibility (против PIC16C64A-20E/P)
Заметки по проектированию
Estimated: at 20 MHz and 5 V VDD, the PIC16C65A-20E/P core draws approximately 5-15 mA typical depending on peripheral activity, while standby current at 3V/32 kHz drops to 1 µA typical. Place a 100 nF ceramic decoupling capacitor within 5 mm of each VDD pin (pins 20 and 40) and a single 10 µF bulk capacitor near the supply origin. Tie both VSS pins to a low-impedance ground plane, not just a trace. For battery-backed designs, add a 100 kΩ pull-up on MCLR/VPP to ensure reliable reset on power-up.
The PIC16C65A-20E/P uses One-Time Programmable EPROM - once burned, the firmware cannot be erased or rewritten. Always validate firmware on a Flash-equivalent PIC (such as PIC16F74) before committing to OTP production. Also note: PORTB pull-ups are software-disabled by default; enable them in firmware if reading switches or buttons. Configuring the CONFIG fuses for brown-out reset and watchdog timer is critical in noisy industrial environments - failure to do so can leave the device in indeterminate states after supply transients.
Keep the crystal or resonator within 10 mm of OSC1 (pin 9) and OSC2 (pin 10), with a ground guard ring around the oscillator traces to minimize noise coupling into adjacent analog inputs. The analog VDD/VSS reference pins should be bypassed with separate 100 nF capacitors. For ADC accuracy, route analog traces away from digital switching signals, especially the PWM output on RC2/CCP1. Place a small RC filter (1 kΩ + 100 nF) on analog inputs if the source impedance exceeds 2.5 kΩ, otherwise ADC sample-and-hold settling is compromised.
Информация о соответствии
The 40-PDIP through-hole package is non-RoHS due to lead-bearing solder terminations. Extended temperature grade (-40C to +125C) supports automotive cabin/under-hood environments but the part is not formally AEC-Q100 qualified. Microchip documents this part as NRND (Not Recommended for New Designs); the F-series Flash variants are recommended replacements.
