PIC16C77T-04I/PQ - 8-bit PIC MCU, 14KB EPROM, 4MHz | Microchip
N.º da peça: PIC16C77T-04I/PQ ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.8 | $168,00 |
| 100 | $14.95 | $1.495,00 |
| 500 | $13.4 | $6.700,00 |
| 1.000 | $12.1 | $12.100,00 |
PIC16C77T-04I/PQ Visão geral
An 8-bit PIC (Peripheral Interface Controller) microcontroller is a Harvard-architecture RISC processor that executes one instruction per clock cycle (except branches), offering deterministic timing and a compact instruction set well-suited to real-time control. PIC MCUs sit within the broader hierarchy of embedded microcontrollers -> microcontrollers -> microprocessors -> semiconductors. The PIC16C7X family is the mid-range PIC16CXX line, balancing cost, peripheral integration, and ease of development for industrial, consumer, and instrumentation designs.
Key features of the PIC16C77T-04I/PQ include the 14KB one-time-programmable (OTP) EPROM for program storage, 33 I/O lines, an 8-channel 8-bit A/D converter, two 8-bit timers plus one 16-bit timer, a USART for serial communication, a Synchronous Serial Port (SSP) for SPI/I2C, and an industrial operating temperature range of -40C to +85C. The 4 MHz oscillator speed (suffix 04) provides sufficient throughput for control loops, sensor sampling, and human-machine interface tasks.
Typical applications include industrial automation controllers, sensor signal conditioners, motor control peripherals, instrumentation front-ends, and embedded communication bridges. The integrated A/D converter and USART make it well-suited for data acquisition boards and remote telemetry.
When designing with the PIC16C77T-04I/PQ, consider that OTP EPROM cannot be erased and reprogrammed - choose this variant for volume production where firmware is finalized, or use a windowed (JW) variant for prototype development. The MQFP-44 footprint also requires careful PCB thermal relief and ground plane design for noise immunity in mixed-signal systems.
This page consolidates distributor pricing, drop-in same-package alternatives (PIC16C77-04I/PQ, PIC16C77-10I/PQ, PIC16C74BT-04I/PQ), parametric comparison data, and practical design guidance that goes beyond a single datasheet page, helping procurement and design engineers evaluate the PIC16C77T-04I/PQ for new designs and legacy replacements.
Alternativas drop-in para PIC16C77T-04I/PQ — 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 PIC16C77T-04I/PQ (mesmo formato e footprint) — diferindo em Core Architecture, Package, Operating Temperature, ADC, Program Memory Size.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16C77-04I/PQ
✅ Drop-In✓ Em estoque
$7.16 / unidade
Ver ficha técnica →PIC16C77-04/PQ
✅ Drop-In✓ Em estoque
$3.95 / unidade
Ver ficha técnica →PIC16C77-10I/PQ
✅ Drop-In✓ Em estoque
$9.85 / unidade
Ver ficha técnica →PIC16C77-20I/P
✅ Drop-In✓ Em estoque
$8.65 / unidade
Ver ficha técnica →PIC16C74BT-04I/PQ
✅ Drop-In✓ Em estoque
$6.1 / unidade
Ver ficha técnica →PIC16C77T-04E/PQ
✅ Drop-In✓ Em estoque
$11.85 / unidade
Ver ficha técnica →PIC16C77T-04I/PQ Classificações máximas e características elétricas
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Family | PIC16C7X (mid-range PIC16CXX) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 14 KB |
| RAM Size | 368 bytes |
| Data EEPROM | Not present |
| Maximum Clock Speed | 4 MHz |
| Tensão de alimentação | 4 V to 5.5 V (5V nominal) |
| I/O Pins | 33 |
| A/D Converter | 8-channel, 8-bit |
| Timers | 2 x 8-bit Timer0/Timer2 + 1 x 16-bit Timer1 |
| Serial Interfaces | USART (SCI) + SSP (SPI / I2C) |
| Temperatura de operação | -40 C to +85 C (Industrial, I grade) |
| Encapsulamento | 44-pin MQFP (PQ), surface mount, tape & reel |
| Tipo de montagem | Surface Mount |
Configuração de pinos do PIC16C77T-04I/PQ
| Pino 1 | OSC1/CLKIN — Oscillator input / external clock input |
| Pino 2 | OSC2/CLKOUT — Oscillator output / clock output |
| Pino 3 | MCLR — Master Clear (reset) input, active low |
| Pino 4 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pino 5 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pino 6 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Pino 7 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / A/D reference |
| Pino 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pino 9 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SSP slave select |
| Pino 10 | VSS — Ground |
| Pino 11 | VDD — Positive supply (5V) |
| Pino 12 | RB0/INT — PORTB bit 0 / external interrupt |
| Pino 13 | RB1 — PORTB bit 1 |
| Pino 14 | RB2 — PORTB bit 2 |
| Pino 15 | RB3 — PORTB bit 3 |
| Pino 16 | RB4 — PORTB bit 4 |
| Pino 17 | RB5 — PORTB bit 5 |
| Pino 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pino 19 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pino 20 | VSS — Ground |
| Pino 21 | VDD — Positive supply (5V) |
| Pino 22 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / T1 clock in |
| Pino 23 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 |
| Pino 24 | RC2/CCP1 — PORTC bit 2 / CCP1 (PWM/capture/compare) |
| Pino 25 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pino 26 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pino 27 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pino 28 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Pino 29 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Pino 30 | VSS — Ground |
| Pino 31 | VDD — Positive supply (5V) |
| Pino 32 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| Pino 33 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| Pino 34 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| Pino 35 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| Pino 36 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| Pino 37 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| Pino 38 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| Pino 39 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| Pino 40 | VSS — Ground |
| Pino 41 | VDD — Positive supply (5V) |
| Pino 42 | RE0/RD/AN5 — PORTE bit 0 / read control / analog input 5 |
| Pino 43 | RE1/WR/AN6 — PORTE bit 1 / write control / analog input 6 |
| Pino 44 | RE2/CS/AN7 — PORTE bit 2 / chip select / analog input 7 |
Aplicações típicas
PIC16C77T-04I/PQ é adequado para 6 aplicaçãos: Industrial Automation Controllers, Data Acquisition Front-Ends, Motor Control Peripherals, Embedded Sensor Hubs, Instrumentation and Test Equipment, Legacy Replacement for PIC16C7X Designs.
Industrial Automation Controllers
The PIC16C77T-04I/PQ fits industrial automation controllers thanks to its 33 digital I/O pins, 8-channel 8-bit A/D converter, two 8-bit timers plus one 16-bit timer, and industrial -40C to +85C operating range. Per the Microchip PIC16C7X family datasheet, the integrated USART and SSP (SPI/I2C) peripherals enable straightforward integration with sensor front-ends, HMI keypads, and downstream motor drivers. At 4 MHz the device delivers 1 microsecond instruction cycles, suitable for PID control loops at hundreds of Hz typical of PLC scan times. Unlike flash PIC16F parts, the OTP EPROM locks the bitstream, which is helpful in factory-floor systems where code tamper-resistance matters.
Recomendado
Data Acquisition Front-Ends
The PIC16C77T-04I/PQ is well-matched to multi-channel data acquisition front-ends because it integrates an 8-channel 8-bit A/D converter (complete with sample-and-hold), 33 GPIO lines, and both SPI and I2C master interfaces via the SSP peripheral. According to the Microchip PIC16C7X datasheet, the A/D conversion completes in roughly 20 microseconds, sufficient for thermocouple, pressure transducer, and potentiometer sampling at low rates. The 14 KB EPROM holds acquisition firmware and small calibration tables. Compared with discrete ADC-plus-MCU designs, this part reduces BOM count and board area while keeping the design OTP-locked for production.
Recomendado
Motor Control Peripherals
The PIC16C77T-04I/PQ supports motor-control peripherals with its 16-bit Timer1 (ideal for PWM period generation), two 8-bit timers (suitable for complementary PWM or input-capture tachometer feedback), and 33 GPIO pins for H-bridge gate signals. According to Microchip application notes, the 4 MHz instruction rate drives PWM in the tens of kHz range, appropriate for small DC or stepper motors. The USART lets the part communicate with a host PLC or display module. For higher-frequency field-oriented control, consider the pin-compatible 10 MHz PIC16C77-10I/PQ without changing the PCB.
Recomendado
Embedded Sensor Hubs
The PIC16C77T-04I/PQ works as an embedded sensor hub because it can aggregate analog and digital sensor data via its 8-channel A/D and GPIO banks, then forward the result over USART, SPI, or I2C. Per the Microchip datasheet, the 14 KB EPROM stores sensor linearization tables, and the 368-byte RAM is sized for short rolling buffers. The industrial -40C to +85C temperature range covers outdoor and factory deployments. The 5 V supply rail matches industrial sensor power buses without level shifters.
Recomendado
Instrumentation and Test Equipment
The PIC16C77T-04I/PQ is a fit for bench and panel instrumentation because of its deterministic 4 MHz instruction timing, 8-channel A/D for front-panel potentiometer and transducer inputs, and USART for sending measurement data to a host PC or display. The PIC mid-range RISC architecture provides single-cycle I/O manipulation, simplifying bit-banging protocols for legacy instrumentation buses. The 44-pin MQFP (PQ) surface-mount package keeps the board footprint compact while exposing 33 I/O lines for keypads, rotary encoders, and LCD data buses.
Recomendado
Legacy Replacement for PIC16C7X Designs
The PIC16C77T-04I/PQ is purpose-built for legacy replacement scenarios where an existing PIC16C7X board must be remanufactured with the original silicon but in modern surface-mount packaging. The 44-pin MQFP (PQ) footprint matches the original through-hole or MQFP designs after a respin, and the OTP EPROM locks the bitstream to the original firmware. Per Microchip cross-reference documentation, this part is a functional equivalent to the original PIC16C77-04I/PQ plus tape-and-reel packaging, making it the preferred ordering choice for SMT production lines supporting legacy programs.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16C77T-04I/PQ — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16C77-04I/PQ | PIC16C77-04/PQ | PIC16C77-10I/PQ | PIC16C77-20I/P | PIC16C74BT-04I/PQ | PIC16C77T-04E/PQ |
|---|---|---|---|---|---|---|---|
| Package | MQFP-44 (PQ) | MQFP-44 (PQ) - same | MQFP-44 (PQ) - same | MQFP-44 (PQ) - same | MQFP-44 (PQ) - same | MQFP-44 (PQ) - same | MQFP-44 (PQ) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Speed | 4 MHz | 4 MHz | 4 MHz | 10 MHz | 20 MHz | 4 MHz | 4 MHz |
| Program Memory | 14 KB EPROM | 14 KB EPROM | 14 KB EPROM | 14 KB EPROM | 14 KB EPROM | 4 KB EPROM | 14 KB EPROM |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) |
| Packaging | Tape & Reel | Tube / Tray | Tube / Tray | Tube / Tray | Tube / Tray | Tube / Tray | Tape & Reel |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 | 33 |
| A/D Converter | 8-ch, 8-bit | 8-ch, 8-bit | 8-ch, 8-bit | 8-ch, 8-bit | 8-ch, 8-bit | 8-ch, 8-bit | 8-ch, 8-bit |
Principais diferenciais
- Tape-and-reel packaging for SMT assembly lines (vs PIC16C77-04I/PQ)
- Industrial temperature grade for harsh environments (vs PIC16C77-04/PQ)
- Twice the program memory vs smaller siblings (vs PIC16C74BT-04I/PQ)
Notas de projeto
Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of each VDD/VSS pair, plus a bulk 10 uF tantalum or aluminum polymer cap on the main 5V rail. The PIC16C77T-04I/PQ has four VDD/VSS pairs (pins 11/10, 21/20, 31/30, 41/40) per the PIC16C7X family datasheet, and skipping any of these pairs can cause intermittent reset or POR failures under high GPIO switching loads. Place a 10 kohm pull-up on MCLR (pin 3) to VDD and add a 100 nF cap on MCLR for noise immunity in electrically noisy industrial environments.
The 44-pin MQFP (PQ) package has a 0.8 mm lead pitch and gull-wing leads on all four sides, which requires careful PCB footprint design - land pattern per IPC-7351 nominal density. Estimated: keep-out area extends about 0.5 mm beyond each pad, and the exposed die paddle is replaced by lead-frame, so no thermal pad is required. Route oscillator traces (OSC1/OSC2) short and guard them with a ground ring to avoid coupling high-speed digital noise into the clock; for crystal operation use a parallel-resonant crystal with two 22 pF loading caps matched to the crystal's load specification.
Do NOT assume the PIC16C77T-04I/PQ can be reprogrammed in-circuit - it uses OTP EPROM. Firmware must be fully validated on a windowed (JW) variant or flash PIC16F877 before committing to OTP production parts. Also verify brown-out voltage configuration in the configuration word; the default BOR can trigger on slow-rising power rails and lock the MCU in reset. Finally, ensure unused I/O pins are configured as outputs (not inputs) to avoid floating-pin current draw of up to several hundred microamperes per pin.
Informações de conformidade
RoHS, lead-free, and REACH compliance status were not stated in the provided Verified Web Data and are marked as 'unknown' rather than fabricated. The PIC16C77T-04I/PQ is not AEC-Q100 qualified as it is an industrial-grade (I suffix, -40C to +85C) part rather than an automotive-qualified part.
