PIC16C64A-20/P - 8-Bit 20MHz OTP MCU 3.5KB | Microchip
N.º da peça: PIC16C64A-20/P ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $15.67 | $15,67 |
| 10 | $14.1 | $141,00 |
| 100 | $12.54 | $1.254,00 |
| 500 | $11.28 | $5.640,00 |
| 1.000 | $10.1 | $10.100,00 |
PIC16C64A-20/P Visão geral
Background knowledge: A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripheral set on one die. The PIC16C family belongs to the 8-bit microcontroller product type, which itself sits inside the broader integrated circuit (semiconductor) hierarchy. OTP memory is programmed once with a device programmer and is non-erasable; the C (CMOS/EPROM) suffix here denotes EPROM-based program storage, distinguishing this part from flash-based PIC16F siblings.
Key features include 22 I/O pins, 8-channel 8-bit analog-to-digital conversion on later silicon revisions of the family, USART serial port, capture/compare/PWM module, and parallel slave port. Wide operating voltage range spans 2.5 V to 6.0 V (commercial, industrial, and extended temperature ranges), with low-power consumption: 5 V at 4 MHz draws only 15 uA typical, and 3 V at 32 kHz draws 1 uA typical - ideal for battery-backed and sleep-dominated designs.
Technical depth: the PIC16C64A uses a Harvard architecture with separate program and data buses, allowing instruction fetch and operand read to occur in the same cycle. Its 14-bit instruction word yields richer addressing than 12-bit predecessors while staying code-density competitive. The architecture is fully static, so the clock can be stopped without losing register state, enabling low-power idle behavior under software control.
Typical applications include industrial control panels, appliance motor control, sensor interfacing, and low-speed serial communication hubs. The 40-pin PDIP footprint also makes it convenient for through-hole hobbyist, educational, and legacy replacement designs where hand-soldering or socketed prototyping is desired.
Design consideration: the /P suffix denotes a plastic 40-pin PDIP package rated for industrial temperature (-40C to +85C). Pin-compatible OTP and EPROM windowed variants share the same footprint, but verify ADC, USART, and CCP peripheral counts when migrating firmware across the family.
This page consolidates distributor pricing, drop-in pin-compatible alternatives from the same PIC16C family, and engineering notes compiled from the manufacturer datasheet and reference designs - information not found in a single distributor listing.
Alternativas drop-in para PIC16C64A-20/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 PIC16C64A-20/P (mesmo formato e footprint) — diferindo em Package, Program Memory Type, Timers, Core Architecture, Program Memory Size.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16C65B-20/P
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16F74-I/P
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →PIC16C74B-20/P
✅ Drop-In✓ Em estoque
$5.42 / unidade
Ver ficha técnica →PIC16C64A-04I/P
✅ Drop-In✓ Em estoque
$6.1 / unidade
Ver ficha técnica →PIC16C64A-10/PT
✅ Drop-In✓ Em estoque
$2.97 / unidade
Ver ficha técnica →PIC16C64A-20/P Classificações máximas e características elétricas
| Core Architecture | PIC16C6X 8-bit RISC (Harvard) |
| Instruction Set | 35 single-word instructions, 14-bit wide |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM | 128 bytes |
| Frequência máxima de clock | 20 MHz |
| Operating Voltage Range | 2.5 V to 6.0 V |
| Supply Voltage (commercial) | 4.0 V to 5.5 V typical |
| I/O Pins | 22 |
| Timers | 3 (Timer0, Timer1, Timer2) |
| USART | 1 (SCI) |
| CCP Modules | [DATA_NONEEDED: 2 CCP per datasheet, listed as 2 capture/compare/PWM] |
| Watchdog Timer | Yes (WDT with on-chip RC oscillator) |
| Parallel Slave Port | Yes (8-bit PSP) |
| Power-on Reset | Yes |
| Current @ 5V, 4 MHz | 15 uA typical |
| Current @ 3V, 32 kHz | 1 uA typical |
| Faixa de temperatura de operação | -40C to +85C (industrial) |
| Encapsulamento | 40-pin PDIP (P) |
| Tipo de montagem | Through-Hole |
| Nível MSL | Not applicable (through-hole) |
Configuração de pinos do PIC16C64A-20/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 | OSC1/CLKIN — Oscillator input / external clock |
| Pino 9 | OSC2/CLKOUT — Oscillator output |
| Pino 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / clock input |
| Pino 11 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Pino 12 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Pino 13 | RC3/SCK/SCL — PORTC bit 3 / SPI SCK / I2C SCL |
| Pino 14 | RC4/SDI/SDA — PORTC bit 4 / SPI SDI / I2C SDA |
| Pino 15 | RC5/SDO — PORTC bit 5 / SPI SDO |
| Pino 16 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Pino 17 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Pino 18 | GND — Ground reference |
| Pino 19 | VDD — Positive supply voltage |
| Pino 20 | RB0/INT — PORTB bit 0 / external interrupt |
| Pino 21 | RB1 — PORTB bit 1 |
| Pino 22 | RB2 — PORTB bit 2 |
| Pino 23 | RB3 — PORTB bit 3 |
| Pino 24 | RB4 — PORTB bit 4 |
| Pino 25 | RB5 — PORTB bit 5 |
| Pino 26 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pino 27 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pino 28 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| Pino 29 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| Pino 30 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| Pino 31 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| Pino 32 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| Pino 33 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| Pino 34 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| Pino 35 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| Pino 36 | RE0/RD/AN5 — PORTE bit 0 / PSP read strobe / analog input 5 |
| Pino 37 | RE1/WR/AN6 — PORTE bit 1 / PSP write strobe / analog input 6 |
| Pino 38 | RE2/CS/AN7 — PORTE bit 2 / PSP chip select / analog input 7 |
| Pino 39 | VDD — Positive supply voltage (second pin) |
| Pino 40 | GND — Ground reference (second pin) |
Aplicações típicas
PIC16C64A-20/P é adequado para 6 aplicaçãos: Industrial Control Panels, Appliance Motor Control, Sensor Data Acquisition Hubs, Educational and Hobbyist Platforms, Legacy Embedded System Replacement, Low-Power Battery Devices.
Industrial Control Panels
The PIC16C64A-20/P's 22 digital I/O, 3 timers, USART, and 20 MHz CPU are well matched to industrial control panels driving relays, solenoids, keypads, and seven-segment displays. Its industrial temperature rating (-40C to +85C) and wide 2.5 V to 6.0 V supply tolerance tolerate harsh factory bus environments including 24 V-derived rails and brown-out conditions. The 3.5 KB OTP program memory holds full state-machine ladder logic plus Modbus ASCII or RTU framing over the USART without needing external ROM. Designers typically place the part on a backplane with optoisolated I/O and a watchdog timer reset supervisor for fault recovery.
Recomendado
Appliance Motor Control
The PIC16C64A-20/P drives brushed DC and small universal motors in appliances through its Capture/Compare/PWM (CCP) modules and 22 I/O pins. At 20 MHz the part generates PWM frequencies high enough to drive 1 ms switching intervals while leaving CPU headroom for closed-loop control, sensor sampling, and user-interface scanning. The PIC16C6X datasheet's CCP and Timer2 modules support period-and-duty control with hardware interrupt on cycle end, simplifying firmware state machines. Operating from a rectified 5 V or 12 V bus, the wide voltage range and industrial temperature tolerance suit white-goods deployments such as washing machines, dishwashers, and HVAC actuators.
Recomendado
Sensor Data Acquisition Hubs
The PIC16C64A-20/P acts as a sensor hub reading thermistors, RTDs, and 4-20 mA loops, then streaming processed data over the on-chip USART. Its 8-bit ADC (per datasheet) and 22 I/O allow multiplexed analog front-end sampling at rates that satisfy slow-loop SCADA applications. Low-power modes - 1 uA typical at 3 V/32 kHz and 15 uA typical at 5 V/4 MHz - extend battery life in remote, sleep-dominated telemetry nodes. The Harvard bus and deterministic 200 ns instruction cycle keep ADC-to-output latency predictable, simplifying CE/FCC EMC compliance for industrial sensor networks.
Recomendado
Educational and Hobbyist Platforms
The PIC16C64A-20/P's 40-pin PDIP through-hole package is a textbook teaching vehicle for embedded programming courses - breadboard-friendly, easy to socket, and supported by MPLAB X IDE plus PICkit programmers. Its 35-instruction RISC core lets students learn assembly and C development on a deterministic architecture without the complexity of modern peripherals. With 3.5 KB OTP and 128 bytes RAM, the part fits classic exercises like LED chasers, keypad locks, and UART-based PC interfaces. The Microchip PIC16C6X family datasheet includes example code, instruction timing tables, and reference schematics tailored for first-time microcontroller users.
Recomendado
Legacy Embedded System Replacement
Many 1990s-era products use the PIC16C64A-20/P in legacy controllers that must still be supported for service, regulatory, or warranty reasons. Because the part retains the same 40-pin PDIP footprint and pinout as the PIC16C65B, PIC16C74B, and PIC16F74, repair depots can substitute a more readily available alternative without PCB rework. The PIC16C6X family's documented instruction-set compatibility preserves firmware binaries, and peripheral register layouts are largely conserved across the OTP-to-flash generations. This makes the PIC16C64A-20/P's alternatives ideal as service-stock components for industrial, medical, and aerospace legacy equipment.
Recomendado
Low-Power Battery Devices
Battery-powered remote controls, electronic locks, and wireless sensor end nodes benefit from the PIC16C64A-20/P's 1 uA typical sleep current and 15 uA active current at 5 V/4 MHz. The wide 2.5 V to 6.0 V supply range accepts two AA cells (3 V nominal) up through a 9 V battery with a linear regulator. With the on-chip watchdog timer and brown-out reset (per datasheet), the part safely recovers from battery sag without external supervisor ICs. The Harvard architecture and deterministic instruction timing give firmware full control over wake-up intervals, enabling multi-year coin-cell life in low-duty-cycle applications such as remote keyless entry or industrial metering.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16C64A-20/P — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16C65B-20/P | PIC16F74-I/P | PIC16C74B-20/P |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin PDIP (P) | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same |
| Program Memory | 3.5 KB OTP EPROM | 7.2 KB OTP | 7.2 KB Flash | 4 KB OTP |
| Max Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| RAM | 128 bytes | 192 bytes | 192 bytes | 192 bytes |
| ADC Resolution | 8-bit | 10-bit | 10-bit | 10-bit |
| I/O Pins | 22 | 33 | 33 | 22 |
| Lifecycle Status | NRND | Active | Active | NRND |
| Memory Type | OTP EPROM | OTP EPROM | Flash | OTP EPROM |
Principais diferenciais
- Higher clock speed than predecessor (vs PIC16C64A-04I/P)
- Active production status with same package (vs PIC16C65B-20/P)
- OTP EPROM for code-modified designs (vs PIC16F74-I/P)
Notas de projeto
Estimated: at 5 V supply and 20 MHz oscillator the PIC16C64A-20/P draws 15 mA typical and 35 mA maximum per the PIC16C6X family datasheet; in sleep mode with WDT disabled current drops below 1 uA. Add a 100 nF decoupling capacitor on each VDD pin (pin 20 and pin 39) within 5 mm of the package, plus a 10 uF bulk capacitor on the supply rail. For battery applications select the LP oscillator mode (32 kHz) and disable unused peripherals to achieve 1 uA typical standby current.
Do not leave the MCLR/VPP pin floating; tie it through a 10 kohm pull-up to VDD for normal operation. In-circuit serial programming (ICSP) requires the RB6/PGC and RB7/PGD pins to be free of strong pull-down or large capacitive loads. When migrating from PIC16C64 to PIC16C64A verify ADC configuration bits, interrupt priorities, and peripheral register addresses, which changed in the silicon revision 'A'.
Place the 40-pin PDIP socket centrally on the PCB to keep trace lengths under 50 mm for all I/O lines. Route the crystal/oscillator traces (OSC1, OSC2) symmetrically and within 10 mm of the MCU, with a guard ground plane underneath to reduce EMI. Keep the parallel slave port (PORTD/RE) traces short and matched, or place a 33 ohm series resistor near the MCU to dampen ringing. If the design uses external interrupts on RB0/INT, add a 100 ohm series resistor and a 100 pF capacitor to ground to suppress ESD-induced false triggers.
Estimated: the 40-pin PDIP has pin pitch 2.54 mm and row pitch 15.24 mm. Reserve at least 5 mm of clearance around the socket for IC extraction tools and for through-hole hand-soldering or wave-soldering tooling. Add a clear silkscreen pin-1 marker dot and label VDD/GND on pins 11/31 (or 20/39) for assembly clarity. For EMC-sensitive designs add a ferrite bead on VDD and a small TVS diode on MCLR/VPP to survive 8 kV ESD contact discharge per IEC 61000-4-2.
Informações de conformidade
RoHS status depends on specific date code; original production predates RoHS. Contact Microchip for current compliance documentation. AEC-Q100 not applicable for non-automotive MCU line. Conflict minerals compliant per Microchip policy.
