PIC16F77T-E/PT - 8-Bit 20MHz 14KB Flash MCU TQFP-44 | Microchip
N.º da peça: PIC16F77T-E/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $9.5 | $9,50 |
| 10 | $8.55 | $85,50 |
| 100 | $7.6 | $760,00 |
| 500 | $6.84 | $3.420,00 |
| 1.000 | $6.08 | $6.080,00 |
PIC16F77T-E/PT Visão geral
An 8-bit PIC microcontroller is a Harvard-architecture RISC processor widely used in embedded control applications; it executes one instruction per cycle (except branches) and integrates Flash program memory, RAM, peripherals (ADC, comparators, timers, USART, PWM, etc.), and a brown-out reset into a single IC. Positioned in the broader hierarchy, PIC16 MCUs sit above PIC10/PIC12 baseline parts and below PIC18/PIC24 enhanced parts, and within Microchip's lineup they serve cost-sensitive real-time control tasks where deterministic interrupt latency and mature toolchain support are valued.
Key features of the PIC16F77T-E/PT include five 8-bit I/O ports providing up to 33 digital I/O pins, a 10-bit multi-channel ADC, two analog comparators, three timers (Timer0, Timer1, Timer2), a USART with 9-bit address detection, capture/compare/PWM modules, and an internal watchdog timer. The device also supports in-circuit serial programming (ICSP) for field updates.
Architecture-wise, the PIC16F77 uses a 14-bit instruction word and 35 single-word instructions, enabling a 200 ns instruction cycle at 20 MHz. Internal RC oscillator options reduce external component count, while the enhanced CCP module simplifies motor-control and SMPS designs. The brown-out reset and power-on reset circuitry improve robustness in industrial environments.
Typical applications include industrial automation controllers, motor control subsystems (BLDC, stepper, relay drive), digital signal conditioning, consumer appliance control panels, HVAC and thermostat front-ends, sensor signal preprocessing, and automotive interior accessories (non-safety). It is also a common drop-in choice for upgrading legacy PIC16C/PIC16F designs that need additional code space.
When designing with this part, allocate the oscillator and MCLR circuitry per datasheet recommendations and verify ADC acquisition time against source impedance. Programming via ICSP requires a 4-pin header with proper isolation to avoid loading the signals during debug.
This page consolidates distributor pricing, drop-in alternatives in the same TQFP-44 footprint, and design notes that complement - but do not replace - the manufacturer datasheet.
Alternativas drop-in para PIC16F77T-E/PT — 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 PIC16F77T-E/PT (mesmo formato e footprint) — diferindo em Package, Core Architecture, Timers, I/O Pins, ADC.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16F77T-E/L
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$8.25 / unidade
Ver ficha técnica →PIC16F777T-I/PT
✅ Drop-In✓ Em estoque
$4.65 / unidade
Ver ficha técnica →PIC16F777-E/PT
✅ Drop-In✓ Em estoque
$6.1 / unidade
Ver ficha técnica →PIC16F777-I/ML
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$5.48 / unidade
Ver ficha técnica →PIC16F77-I/PT
✅ Drop-In✓ Em estoque
$5.4 / unidade
Ver ficha técnica →PIC16F77T-E/PT Classificações máximas e características elétricas
| Core Architecture | PIC16 8-bit RISC (Harvard) |
| Instruction Word Size | 14-bit |
| Program Memory (Flash) | 14 KB (8K x 14) |
| RAM | 368 bytes |
| Clock Speed (max) | 20 MHz |
| Instruction Cycle | 200 ns at 20 MHz |
| Tensão de alimentação | 4.0 V to 5.5 V |
| I/O Pins | 33 (5 ports) |
| ADC | 10-bit, multi-channel |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Analog Comparators | 2 |
| Communication | USART (with 9-bit address detect) |
| PWM / CCP | Yes (Capture/Compare/PWM) |
| Watchdog Timer | Yes (internal) |
| Brown-out Reset | Yes |
| Operating Temperature (E suffix) | -40C to +125C (industrial) |
| Encapsulamento | TQFP-44 (10x10 mm, also called PT) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Programming | ICSP (In-Circuit Serial Programming) |
Configuração de pinos do PIC16F77T-E/PT
| Pino 1 | OSC1/CLKI — Crystal oscillator input or external clock input |
| Pino 2 | OSC2/CLKO — Crystal oscillator output or clock output |
| Pino 3 | MCLR/VPP — Master Clear (reset) input or programming voltage |
| Pino 4 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| Pino 5 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| Pino 6 | RA2/AN2 — PORTA bit 2 / Analog input channel 2 |
| Pino 7 | RA3/AN3/VREF — PORTA bit 3 / Analog input channel 3 / Voltage reference |
| Pino 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pino 9 | RA5/AN4/SS — PORTA bit 5 / Analog input channel 4 / SPI slave select |
| Pino 10 | RE0/RD/AN5 — PORTE bit 0 / Parallel port read / Analog input 5 |
| Pino 11 | RE1/WR/AN6 — PORTE bit 1 / Parallel port write / Analog input 6 |
| Pino 12 | RE2/CS/AN7 — PORTE bit 2 / Parallel port chip select / Analog input 7 |
| Pino 13 | VSS — Ground reference |
| Pino 14 | VDD — Positive supply voltage 4.0V-5.5V |
| Pino 15 | OSC1 — Secondary oscillator pin (alternate) |
| Pino 16 | OSC2 — Secondary oscillator pin (alternate) |
| Pino 17 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| Pino 18 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 module |
| Pino 19 | RC2/CCP1 — PORTC bit 2 / CCP1 module |
| Pino 20 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pino 21 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pino 22 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pino 23 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Pino 24 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Pino 25 | RB0/INT — PORTB bit 0 / external interrupt input |
| Pino 26 | RB1 — PORTB bit 1 |
| Pino 27 | RB2 — PORTB bit 2 |
| Pino 28 | RB3/PGM — PORTB bit 3 / low-voltage programming enable |
| Pino 29 | RB4 — PORTB bit 4 / interrupt-on-change |
| Pino 30 | RB5 — PORTB bit 5 / interrupt-on-change |
| Pino 31 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pino 32 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pino 33 | RD0 — PORTD bit 0 / parallel data bus |
| Pino 34 | RD1 — PORTD bit 1 / parallel data bus |
| Pino 35 | RD2 — PORTD bit 2 / parallel data bus |
| Pino 36 | RD3 — PORTD bit 3 / parallel data bus |
| Pino 37 | RD4 — PORTD bit 4 / parallel data bus |
| Pino 38 | RD5 — PORTD bit 5 / parallel data bus |
| Pino 39 | RD6 — PORTD bit 6 / parallel data bus |
| Pino 40 | RD7/PSP7 — PORTD bit 7 / parallel slave port data |
| Pino 41 | AVSS — Analog ground reference |
| Pino 42 | AVDD — Analog positive supply |
| Pino 43 | VSS — Ground reference (digital) |
| Pino 44 | VDD — Positive supply voltage (digital) |
Aplicações típicas
PIC16F77T-E/PT é adequado para 6 aplicaçãos: Industrial Automation Controllers, Motor Control Subsystems, HVAC and Thermostat Front-Ends, Consumer Appliance Control, Sensor Signal Preprocessing, Automotive Interior Accessories (Non-Safety).
Industrial Automation Controllers
The PIC16F77T-E/PT fits industrial automation controllers because it combines 14 KB of Flash with deterministic 200 ns instruction cycles, 33 digital I/O lines, and a wide 4.0V-5.5V supply range. Its on-chip USART and analog comparators handle RS-485 sensor interfaces directly, while the 20 MHz clock supports 9-bit address detect protocols common in factory automation. The TQFP-44 footprint simplifies SMT assembly for control-cabinet PCBs and reduces cost per I/O line.
Recomendado
Motor Control Subsystems
The PIC16F77T-E/PT works well in motor control subsystems because its Capture/Compare/PWM modules and 20 MHz instruction rate deliver accurate commutation timing for brushed DC and small BLDC motors. The integrated 10-bit ADC samples back-EMF or current-sense signals fast enough to support 20 kHz PWM, while the 33 I/O lines accept quadrature encoders and direction logic. The TQFP-44 footprint tolerates the thermal rise of continuous switching through built-in brown-out reset protection.
Recomendado
HVAC and Thermostat Front-Ends
The PIC16F77T-E/PT suits HVAC and thermostat front-ends because its 10-bit ADC and analog comparators handle NTC thermistor networks and supply-voltage monitoring with sufficient resolution. The 14 KB Flash stores scheduling logic, while the 368-byte RAM covers setpoint buffers and UI state. Low-power modes plus brown-out reset extend battery life during brown-outs common in HVAC wiring, all within the industry-standard 5V supply range.
Recomendado
Consumer Appliance Control
The PIC16F77T-E/PT serves consumer appliance control panels due to its 33 I/O pins driving LED indicators, keypad matrices, and 7-segment displays. The ICSP interface supports in-field firmware updates after assembly, while 5V supply compatibility eliminates level shifters for legacy appliance power rails. The TQFP-44 footprint supports both hand-soldered prototypes and high-volume SMT production runs.
Recomendado
Sensor Signal Preprocessing
The PIC16F77T-E/PT integrates sensor preprocessing through its 10-bit ADC, two analog comparators, and hardware USART, accepting raw sensor voltages and transmitting conditioned values over UART. The 20 MHz clock keeps ADC sampling latency under 10 us, supporting vibration and pressure monitoring up to several kHz. Industrial-grade -40C to +125C operation suits outdoor enclosures and process instrumentation.
Recomendado
Automotive Interior Accessories (Non-Safety)
The PIC16F77T-E/PT powers non-safety automotive interior accessories such as lighting controllers, seat-position memories, and accessory timers. The extended -40C to +125C temperature window tolerates cabin and engine-bay-adjacent environments, while the 14 KB Flash covers the most accessory sequencing stacks. Brown-out reset and watchdog timer improve robustness against cranking transients on 12V rails.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16F77T-E/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16F777T-I/PT | PIC16F777-E/PT | PIC16F77-I/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (PT) | TQFP-44 (PT) - same | TQFP-44 (PT) - same | TQFP-44 (PT) - same |
| Flash Program Memory | 14 KB | 14 KB | 14 KB | 14 KB |
| RAM | 368 bytes | 368 bytes | 368 bytes | 368 bytes |
| Max Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| I/O Pins | 33 | 33 | 33 | 33 |
| ADC | 10-bit | 10/12-bit selectable | 10/12-bit selectable | 10-bit |
| nanoWatt Power Management | No | Yes | Yes | No |
| Temperature Range | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +85C |
Principais diferenciais
- Lower cost baseline with mature PIC16F feature set (vs PIC16F777T-I/PT)
- Extended temperature range option on E suffix (vs PIC16F77-I/PT)
- Larger I/O count than lower-pin PIC16F cousins (vs PIC16F76T-E/SO)
Notas de projeto
The PIC16F77T-E/PT operates from 4.0V to 5.5V. Brown-out reset typically triggers at 3.6V-4.0V to protect Flash during voltage dips. Add a 100nF decoupling capacitor within 5 mm of VDD pin 14 and an additional 10uF bulk capacitor on the supply rail to handle motor-control inrush without sag.
Keep the crystal traces between OSC1 and OSC2 as short and symmetric as possible, surrounded by a digital ground guard ring. AVDD/AVSS should have their own ferrite or LC filter stage to isolate analog supply noise from the digital VDD, and AVDD must be connected even if the ADC is unused (ties to internal references).
MCLR must be pulled high through a 10k resistor and bypassed with a 100nF capacitor; floating MCLR causes spurious resets. RB3 must be held low during normal operation unless LVP programming is intended, or the device will enter low-voltage programming mode unintentionally. ICSP pins PGC/PGD should be isolated with series resistors during in-circuit debug to avoid loading the programming signals.
Long PORTD bus traces (>50 mm) benefit from series 100-ohm terminators and a ground reference trace to control reflections in high-speed parallel reads. PORTC SPI pins (RC3/RC4/RC5) require matched-length routing for signals above 5 MHz to maintain data integrity. If using the parallel slave port, the PSPI/O bits in TRISE must be cleared for proper operation.
Informações de conformidade
RoHS compliance is indicated in the Microchip material declaration. The device is not AEC-Q100 qualified; for automotive-safety applications consider migrating to PIC16F1xxx or dsPIC30F families that carry AEC-Q100 grades.
