PIC16C77-20E/L - 8-Bit CMOS MCU, 14KB EPROM, 20MHz, 44-PLCC | Microchip
N.º da peça: PIC16C77-20E/L ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.85 | $1.385,00 |
| 500 | $11.4 | $5.700,00 |
| 1.000 | $9.75 | $9.750,00 |
PIC16C77-20E/L Visão geral
What is an 8-bit CMOS microcontroller? It is a single-chip computer that integrates a CPU, program memory (ROM/EPROM/Flash), data memory (RAM), and peripherals on one die. The PIC16C7x family belongs to the mid-range PIC microcontroller hierarchy, sitting between base-line PIC10/12 devices and enhanced PIC17/18 devices. The PIC16C77 is the higher-pin-count, higher-memory sibling of the PIC16C73/74/76 series, offering more I/O lines and more program memory for embedded control.
Key features include 33 digital I/O lines, a wide operating voltage range of 2.5 V to 6.0 V, high sink/source current capability of 25 mA/25 mA per pin, low standby current of 1 µA typical at 3 V / 32 kHz, and 35 single-word instructions to learn. The device uses a Harvard RISC architecture with single-cycle instruction execution except for program branches, which take two cycles, giving predictable deterministic timing that is highly valued in real-time control applications.
The PIC16C77 architecture combines a precision 8-bit ALU, a 14-bit instruction word, hardware stack, and dedicated peripheral registers. The integrated A/D converter with 8 channels simplifies mixed-signal designs by eliminating an external ADC chip. Two PWM modules support motor and power-control loops directly. The 'E' suffix denotes the extended industrial temperature range (-40 °C to +125 °C), while the 'L' suffix indicates the windowed CERDIP-44 package variant (per the manufacturer part-number decoder), though the verified data confirms the 44-pin PLCC form factor in production.
Typical applications include industrial process control, motor control, instrumentation, automotive body electronics, and consumer appliances. The device's rich peripheral set and 14 KB EPROM program memory make it suitable for moderate-complexity firmware with mixed-signal and serial-communication needs.
When designing with this part, note that EPROM devices require a UV-erase window for reprogramming; for in-system reprogrammability, choose the Flash-based PIC16F877 equivalent. Always place 0.1 µF decoupling capacitors on VDD/VDD2 and provide a stable MCLR reset network with a 10 kΩ pull-up.
This page synthesizes distributor pricing, pin-compatible PIC16C7x drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternativas drop-in para PIC16C77-20E/L — 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 PIC16C77-20E/L (mesmo formato e footprint) — diferindo em Core Architecture, Program Memory Size, Program Memory Type, Timers, Mounting Type.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16C77-10/L
✅ Drop-In✓ Em estoque
$7.25 / unidade
Ver ficha técnica →PIC16C77-04/L
✅ Drop-In✓ Em estoque
$5.98 / unidade
Ver ficha técnica →PIC16C77-10I/L
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16C77-10E/L
✅ Drop-In✓ Em estoque
$9.85 / unidade
Ver ficha técnica →PIC16C77-04I/L
✅ Drop-In✓ Em estoque
$6.1 / unidade
Ver ficha técnica →PIC16C77-20E/L Classificações máximas e características elétricas
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Program Memory Type | OTP EPROM (14 KB / 8K x 14) |
| Program Memory Size | 14 KB |
| RAM | 368 bytes |
| Frequência máxima de clock | 20 MHz |
| Instruction Set | 35 single-word instructions (mid-range) |
| Instruction Cycle | Single-cycle (4 clock periods), 200 ns at 20 MHz |
| Supply Voltage Range | 4.0 V to 5.5 V (operating), up to 6.0 V max |
| I/O Pins | 33 |
| A/D Converter | 8 channels, 8-bit resolution |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Capture/Compare/PWM | 2 CCP modules |
| Serial Interfaces | SSP (SPI/I2C) + USART (SCI) |
| I/O Sink/Source Current | 25 mA / 25 mA |
| Standby Current | 1 µA typical at 3 V / 32 kHz; < 5 µA at 5 V / 4 MHz |
| Encapsulamento | 44-pin PLCC (16.59 x 16.59 mm) |
| Faixa de temperatura de operação | -40 °C to +125 °C (Extended, 'E' suffix) |
| Tipo de montagem | Surface Mount |
Configuração de pinos do PIC16C77-20E/L
| Pino 1 | MCLRbar/VPP — Master Clear reset input / programming voltage |
| Pino 2 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| Pino 3 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| Pino 4 | RA2/AN2 — PORTA bit 2 / Analog input channel 2 |
| Pino 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / Voltage reference + |
| Pino 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pino 7 | RA5/AN4/SSbar — PORTA bit 5 / Analog input 4 / SPI slave select |
| Pino 8 | VSS — Ground reference |
| Pino 9 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Pino 10 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Pino 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| Pino 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Pino 13 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Pino 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pino 15 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pino 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pino 17 | RC6/TX/CK — PORTC bit 6 / USART transmit / clock |
| Pino 18 | RC7/RX/DT — PORTC bit 7 / USART receive / data |
| Pino 19 | VSS — Ground reference |
| Pino 20 | VDD — Positive supply voltage |
| Pino 21 | RB0/INT — PORTB bit 0 / External interrupt input |
| Pino 22 | RB1 — PORTB bit 1 |
| Pino 23 | RB2 — PORTB bit 2 |
| Pino 24 | RB3/PGM — PORTB bit 3 / Low-voltage programming |
| Pino 25 | RB4 — PORTB bit 4 |
| Pino 26 | RB5 — PORTB bit 5 |
| Pino 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pino 28 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pino 29 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| Pino 30 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| Pino 31 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| Pino 32 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| Pino 33 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| Pino 34 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| Pino 35 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| Pino 36 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| Pino 37 | RE0/RDbar/AN5 — PORTE bit 0 / Read control / Analog input 5 |
| Pino 38 | RE1/WRbar/AN6 — PORTE bit 1 / Write control / Analog input 6 |
| Pino 39 | RE2/CSbar/AN7 — PORTE bit 2 / Chip select / Analog input 7 |
| Pino 40 | VDD — Positive supply voltage |
| Pino 41 | VSS — Ground reference |
| Pino 42 | NC — Not connected (per datasheet) |
| Pino 43 | NC — Not connected (per datasheet) |
| Pino 44 | NC — Not connected (per datasheet) |
Aplicações típicas
PIC16C77-20E/L é adequado para 6 aplicaçãos: Industrial Process Control, DC Motor Speed Control, Automotive Body Electronics, Instrumentation and Data Acquisition, Consumer Appliance Control, Remote Sensor Monitoring (IoT Edge Node).
Industrial Process Control
The PIC16C77-20E/L fits industrial process control because its 8-channel 8-bit ADC samples multiple sensor inputs simultaneously (thermocouples, pressure transducers, flow meters) without external ADC hardware. Its 14 KB EPROM supports complex PID loop firmware, while the 20 MHz clock provides deterministic 200 ns instruction cycles for time-critical control loops. The two CCP/PWM modules drive valve actuators and heater controls directly via the 25 mA sink/source I/O capability, and the USART interfaces to HMI displays or PLC networks. The wide 4.0-5.5 V operating range and -40C to +125C extended temperature rating (E suffix) handle factory-floor environments with temperature swings and unregulated supply rails.
Recomendado
DC Motor Speed Control
The PIC16C77-20E/L fits DC and stepper motor control because its dual Capture/Compare/PWM modules deliver hardware-generated PWM signals up to 10-bit resolution, freeing the CPU for feedback-loop calculations. Its 20 MHz MIPS budget executes PID algorithms in microseconds while sampling back-EMF via the 8-channel ADC. Per Microchip application note AN532, the 25 mA I/O sink/source current directly drives opto-isolated gate-driver inputs or small MOSFETs for sub-1A motor applications. The integrated Timer1 with external capture pin enables precise tachometer feedback for closed-loop speed regulation, while the USART reports status to a master controller.
Recomendado
Automotive Body Electronics
The PIC16C77-20E/L fits automotive body-control modules because its extended -40C to +125C temperature rating handles under-hood and cabin thermal extremes, while the 4.0-5.5 V operating range tolerates 12 V battery transients when paired with a 5 V regulator. Its 33 I/O pins multiplex numerous switch inputs (door, window, mirror controls) and PWM outputs (lamp dimming, seat motors), while the 8-channel ADC monitors battery voltage and current sensing. Per Microchip automotive qualification documentation, the PIC16C7x family is widely deployed in non-safety-critical body modules, though AEC-Q100 Grade 0 parts are preferred for new designs.
Recomendado
Instrumentation and Data Acquisition
The PIC16C77-20E/L fits bench-top instrumentation because its 14 KB EPROM stores calibration coefficients and complex measurement routines, while the 8-channel 8-bit ADC scans multiple analog inputs at 20 µs per channel. Its synchronous serial port (SSP) interfaces to external 12-bit or 16-bit ADCs for higher-resolution measurements, and the USART streams data to PC-based logging software. Per the datasheet, the 1 µA standby current extends battery life in portable meters, while the deterministic 200 ns instruction cycle provides accurate timing references for frequency counters and capacitance meters.
Recomendado
Consumer Appliance Control
The PIC16C77-20E/L fits consumer appliances (washing machines, dishwashers, microwave ovens) because its OTP EPROM offers low per-unit cost at high volumes versus Flash equivalents. Its two CCP/PWM modules control motor speeds and heating elements via zero-crossing triac drivers, while the 8-channel ADC monitors temperature sensors (NTC thermistors), water level, and door switches. Per Microchip appliance reference designs, the 33 I/O pins handle multi-button user interfaces with seven-segment LED or LCD displays. The 'E' extended temperature grade survives the thermal environment of motor-compressor compartments.
Recomendado
Remote Sensor Monitoring (IoT Edge Node)
The PIC16C77-20E/L fits IoT edge-node sensor monitoring because its 1 µA standby current at 3 V / 32 kHz enables multi-year battery life on remote installations, while the 8-channel ADC polls multiple environmental sensors (temperature, humidity, light). Its SSP/USART interfaces to LoRa, XBee, or Wi-Fi modules for wireless telemetry. Per Microchip low-power application notes, the watchdog timer and Sleep mode with peripheral wake-up extend battery life significantly versus always-on operation. The 14 KB EPROM supports sensor-fusion algorithms and local data logging before transmission bursts.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16C77-20E/L — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16C77-10/L | PIC16C77-04/L | PIC16C77-10I/L | PIC16C77-10E/L | PIC16C77-04I/L |
|---|---|---|---|---|---|---|
| Package | 44-pin PLCC | 44-pin PLCC - same | 44-pin PLCC - same | 44-pin PLCC - same | 44-pin PLCC - same | 44-pin PLCC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Clock Frequency | 20 MHz | 10 MHz | 4 MHz | 10 MHz | 10 MHz | 4 MHz |
| Program Memory | 14 KB EPROM | 14 KB EPROM | 14 KB EPROM | 14 KB EPROM | 14 KB EPROM | 14 KB EPROM |
| Temperature Range | -40C to +125C (Extended) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
| A/D Converter | 8ch x 8-bit | 8ch x 8-bit | 8ch x 8-bit | 8ch x 8-bit | 8ch x 8-bit | 8ch x 8-bit |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| CCP/PWM Modules | 2 | 2 | 2 | 2 | 2 | 2 |
| RAM | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 368 bytes |
Principais diferenciais
- Higher clock speed within PIC16C7x family (vs PIC16C77-10/L)
- Extended industrial temperature range (vs PIC16C77-10I/L)
- Larger program memory than PIC16C76 family (vs PIC16C76-20E/SO)
Notas de projeto
Decouple VDD pins (20 and 40) with a 0.1 µF ceramic capacitor placed within 5 mm of each pin, plus a 10 µF tantalum bulk capacitor on the main VDD rail. Per Microchip datasheet DS30292D, the PIC16C77 has two VDD pins that must both be decoupled for stable operation. AVdd/AVss pins (if used for ADC reference) require separate analog-ground routing to avoid digital switching noise coupling into ADC readings. Estimated: at 20 MHz and 5 V, supply current is approximately 25 mA; plan regulator headroom accordingly.
Use a star-ground topology with the PIC16C77's VSS pin (8) as the central star point. Keep analog input traces (AN0-AN7) short and routed away from digital switching signals to preserve ADC accuracy. For 44-pin PLCC socket installation, use a machined-pin socket for reliable production programming and field replacement. Per Microchip layout guidelines, place a 4.7 kΩ pull-up on MCLRbar (pin 1) and a series resistor/diode network for in-circuit programming.
Do not assume ADC accuracy at full 20 MHz throughput without adequate acquisition time - configure ADC clock source to derive from Fosc/16 or slower, with minimum 20 µs acquisition time per datasheet. The PIC16C77's EPROM is OTP (one-time-programmable) - verify firmware with a PIC16F877 or PIC16C77/JW windowed prototype before committing to OTP production parts. Watchdog timer must be cleared in the main loop or disabled in CONFIG to avoid unintended resets in long-latency routines.
Route the crystal traces (OSC1/OSC2, pins 9-10) as short as possible with a ground guard ring to prevent EMI radiation. For high-speed designs (20 MHz), place the crystal within 10 mm of the MCU. If using an external clock source, the CLKOUT pin (10) can drive other devices but should be buffered if more than one load is present. Avoid routing the parallel slave port (PORTD, pins 29-36) signals near the oscillator traces to prevent coupling.
Informações de conformidade
RoHS, REACH, lead-free, halogen-free, and conflict-mineral status for PIC16C77-20E/L not present in verified web data; PIC16C7x OTP EPROM family predates many of these compliance mandates. AEC-Q100 not applicable for this part number; PIC16F877 automotive variants exist separately.
