PIC16C774-E/P - 8-Bit OTP MCU 7KB 12-bit ADC 40-PDIP | Microchip
N.º da peça: PIC16C774-E/P ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $11.5 | $11,50 |
| 10 | $10.35 | $103,50 |
| 100 | $9.2 | $920,00 |
| 500 | $8.3 | $4.150,00 |
| 1.000 | $7.45 | $7.450,00 |
PIC16C774-E/P Visão geral
What is a PIC16C 8-bit OTP microcontroller? It is a member of Microchip's mid-range PICmicro family built on a CMOS process and packaged in OTP (One-Time-Programmable) memory. It belongs to the broader taxonomy: 8-bit microcontroller -> embedded MCU -> microcontroller IC -> integrated circuit -> semiconductor. PIC mid-range MCUs are widely adopted in industrial control, instrumentation, and automotive subsystems because of their deterministic instruction timing, low power consumption, and a mature toolchain (MPLAB IDE + MPASM / XC8).
Key differentiating features include 10 channels of 12-bit ADC (vs 8-bit ADC on many older PIC16C6x devices), three timer/counters (TMR0, TMR1, TMR2), a USART with hardware addressing, a synchronous serial port (SSP) for SPI / I2C, a Capture/Compare/PWM (CCP) module, and a programmable Brown-out Reset (BOR). The 'E' temperature grade extends operation from -40C to +125C, making the PIC16C774-E/P suitable for industrial and automotive-grade thermal environments.
Architecturally, the device uses a Harvard bus with separate program (14-bit wide) and data (8-bit wide) paths, allowing instruction fetch and operand access in a single cycle. The 12-bit ADC is successive-approximation (SAR) type with a sample-and-hold front end and programmable acquisition time, and the analog reference can be tied to VDD, an external pin, or an internal bandgap on derivatives.
Typical applications include industrial process control loops, multi-channel data acquisition front-ends, instrumentation front-panels, sensor signal conditioning, motor/valve control with closed-loop feedback, and automotive body/cluster subsystems where the extended temperature range is mandatory. The wide I/O count also supports keypad scanning and LCD drive.
When designing with the PIC16C774-E/P, allocate at least one decoupling capacitor pair (100 nF + 10 uF) per VDD/VDDcore pin and keep the analog AVdd/AVss traces short and quiet. Because the part is OTP, code must be fully validated before programming; for engineering builds use the windowed PIC16C774/JW, and for production reprogrammability migrate to the flash-based PIC16F877A.
This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet to accelerate part selection and board bring-up.
Alternativas drop-in para PIC16C774-E/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 PIC16C774-E/P (mesmo formato e footprint) — diferindo em Package, Mounting Type, Core Architecture, Timers, Operating Temperature.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16C774-I/P
✅ Drop-In✓ Em estoque
$7.6 / unidade
Ver ficha técnica →PIC16C774/JW
✅ Drop-In✓ Em estoque
$10.2 / unidade
Ver ficha técnica →PIC16F74-I/P
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →PIC16F77-I/P
✅ Drop-In✓ Em estoque
$8.4 / unidade
Ver ficha técnica →PIC16F877A-I/P
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →PIC16C773-E/P
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16C774-E/P Classificações máximas e características elétricas
| Core Architecture | PIC16C 8-bit RISC, 35 single-word instructions |
| Program Memory Type | CMOS OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14 words) |
| RAM | 256 bytes |
| Data EEPROM | Not present on this family |
| Frequência máxima de clock | 20 MHz |
| Instruction Cycle Time | 200 ns |
| ADC | 10-channel, 12-bit SAR |
| Digital I/O Pins | 33 |
| Timers | TMR0, TMR1 (16-bit), TMR2 (8-bit) |
| Communication Peripherals | USART (SCI), SSP (SPI / I2C) |
| CCP Module | Capture / Compare / PWM |
| Brown-out Reset | Yes, programmable |
| Watchdog Timer | Yes, with on-chip WDT oscillator |
| Operating Voltage (Vdd) | 4.0 V to 6.0 V (typical PIC16C7x range) |
| Operating Temperature Range (E grade) | -40C to +125C |
| Encapsulamento | 40-pin PDIP (Plastic DIP) |
| Tipo de montagem | Through Hole |
Configuração de pinos do PIC16C774-E/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 Vref+ |
| Pino 6 | RA4/T0CKI — PORTA bit 4 / TMR0 clock input |
| Pino 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI Slave Select |
| Pino 8 | RE0/RD/AN5 — PORTE bit 0 / Read control / Analog input 5 |
| Pino 9 | RE1/WR/AN6 — PORTE bit 1 / Write control / Analog input 6 |
| Pino 10 | RE2/CS/AN7 — PORTE bit 2 / Chip Select / Analog input 7 |
| Pino 11 | VDD — Positive supply (digital) |
| Pino 12 | VSS — Ground (digital) |
| Pino 13 | OSC1/CLKIN — Crystal oscillator input / external clock |
| Pino 14 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Pino 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / TMR1 oscillator out / TMR1 clock |
| Pino 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / TMR1 oscillator in / CCP2 |
| Pino 17 | RC2/CCP1 — PORTC bit 2 / Capture-Compare-PWM 1 |
| Pino 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pino 19 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| Pino 20 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| Pino 21 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| Pino 22 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| Pino 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pino 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pino 25 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Pino 26 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Pino 27 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| Pino 28 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| Pino 29 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| Pino 30 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| Pino 31 | VSS — Ground (digital) |
| Pino 32 | VDD — Positive supply (digital) |
| Pino 33 | RB0/INT — PORTB bit 0 / External interrupt |
| Pino 34 | RB1 — PORTB bit 1 |
| Pino 35 | RB2 — PORTB bit 2 |
| Pino 36 | RB3/PGM — PORTB bit 3 / Low-voltage programming |
| Pino 37 | RB4 — PORTB bit 4 |
| Pino 38 | RB5 — PORTB bit 5 |
| Pino 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pino 40 | RB7/PGD — PORTB bit 7 / ICSP data |
Aplicações típicas
PIC16C774-E/P é adequado para 6 aplicaçãos: Industrial Process Control Loops, Multi-Channel Data Acquisition Front-End, Instrumentation Front-Panel Controllers, Automotive Body and Cluster Subsystems, Sensor Signal Conditioning and Conversion, Motor and Valve Closed-Loop Control.
Industrial Process Control Loops
The PIC16C774-E/P fits industrial process-control loops because its 10-channel, 12-bit ADC delivers ~2.4 mV resolution on a 10 V analog input, eliminating external signal conditioning for thermocouple, RTD bridge, and 4-20 mA current-loop front-ends. The 33 digital I/O lines accept discrete switch inputs and drive SSR/relay outputs, while the CCP module generates PID output pulses without CPU overhead. The E-grade -40C to +125C rating tolerates cabinet-side ambient, and the USART plus SSP allow direct wiring to RS-485 transceivers and SPI sensor ASICs. Engineers should allocate separate analog and digital ground planes and place a 100 nF + 10 uF decoupling pair per VDD pin for noise immunity.
Recomendado
Multi-Channel Data Acquisition Front-End
For a multi-channel data-acquisition front-end, the PIC16C774-E/P's 12-bit SAR ADC sampled at up to ~50 ksps aggregates up to 10 analog inputs into one MCU, reducing bill-of-materials versus a discrete ADC + CPLD architecture. The 256-byte RAM is suitable for 10-sample circular buffering; for higher throughput, the DMA-style ring buffer can be offloaded to an external SPI SRAM. The CCP module timestamps samples at 200 ns resolution for synchronous logging. Use the on-chip BOR and WDT to survive industrial brown-out events; verify analog reference stability by tying AVdd to a low-noise LDO such as MCP1700.
Recomendado
Instrumentation Front-Panel Controllers
The PIC16C774-E/P is a natural fit for bench-top instrument front panels: its 33 I/O drive 7-segment LED displays, rotary encoders, and keypads without external logic, while the USART and SSP provide back-channel serial buses to the main DSP or FPGA. The 12-bit ADC digitizes front-panel potentiometers and sensor inputs with sufficient resolution for set-point control. The OTP memory prevents firmware tampering in calibratable instruments. Drive LEDs through current-limiting resistors and add a watchdog refresh task to recover from misconfigured displays.
Recomendado
Automotive Body and Cluster Subsystems
The E-temperature grade -40C to +125C qualifies the PIC16C774-E/P for under-dash and cluster electronics that experience wide thermal swings. The USART interfaces to LIN/CAN gateways via an external transceiver, the CCP module drives instrument-cluster stepper or DC motor pointers, and the 12-bit ADC reads fuel-level, thermistor, and switch inputs. The BOR circuit handles automotive cranking dropouts. Cluster designs must add ESD protection on all I/O lines and follow AEC-Q100 derating practices; for new automotive platforms the PIC16F877A-Q1 or dsPIC33 variants are preferred active alternatives.
Recomendado
Sensor Signal Conditioning and Conversion
Use the PIC16C774-E/P as a smart sensor conditioner: the 12-bit ADC digitizes strain-gauge bridges, NTC thermistors, and photo-diodes, while firmware applies linearization and outputs a clean analog via PWM plus low-pass filter or a true 4-20 mA loop via an external DAC. The SSP drives SPI ADCs or DACs for higher precision, and the 20 MHz core handles 100 Hz update rates with 50% CPU headroom. Match the analog reference to the sensor excitation to maximize ADC dynamic range, and isolate digital ground from analog ground at one star point.
Recomendado
Motor and Valve Closed-Loop Control
The PIC16C774-E/P runs a PID loop on a small DC motor or proportional valve by sampling current/voltage via the 12-bit ADC and driving a PWM through the CCP module at up to 10-bit resolution. The 33 I/O lines handle end-stop sensors, H-bridge enable, and tachometer feedback without external glue logic. The WDT and BOR survive industrial EMI events that would otherwise reset a less-protected controller. Add an RC snubber across the motor terminals and route the analog feedback trace away from the PWM drive traces.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16C774-E/P — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16C774-I/P | PIC16C774/JW | PIC16F74-I/P | PIC16F877A-I/P | PIC16C773-E/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-40 | PDIP-40 | PDIP-40 (Ceramic Windowed) | PDIP-40 | PDIP-40 | PDIP-40 |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB EPROM (UV) | 7 KB Flash | 14 KB Flash | 4 KB OTP |
| ADC Resolution | 12-bit, 10 channels | 12-bit, 10 channels | 8-bit, 8 channels | 10-bit, 8 channels | 12-bit, 6 channels | |
| Max Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | ||
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) | |
| Lifecycle Status | NRND | NRND | Active | Active | NRND | |
| Reprogrammability | One-Time Programmable (OTP) | UV-erasable (windowed) | Flash (1k erase cycles) | Flash (1k erase cycles) |
Principais diferenciais
- Only NRND PIC16C 40-PDIP variant with E-grade +125C and pin-to-pin drop-in (vs PIC16C774-I/P)
- 10-channel 12-bit ADC vs 8-bit on most PIC16C7x siblings (vs PIC16C773-E/P)
- OTP locking for firmware security (vs PIC16F877A-I/P)
Notas de projeto
Place a 100 nF X7R ceramic decoupling capacitor within 5 mm of every VDD pin (pin 11 and pin 32) and a single 10 uF tantalum or aluminum-polymer bulk capacitor at the board entry. Add a 100 nF + 10 uF pair on AVdd/AVss if the analog reference is supplied from a separate rail; this prevents ADC reference droop during ADC conversions and improves 12-bit effective resolution by 1-2 LSB.
Route the crystal traces (OSC1/OSC2, pins 13/14) as short, symmetric loops with a grounded guard ring; keep digital traces away from the OSC1/OSC2 pair by at least 3 mm to avoid pulling the oscillator. Place the MCLR/VPP pull-up (typically 10 kohm) close to pin 1 and add a 100 nF cap to ground if the environment is electrically noisy. The ICSP pins RB6/RB7 (pins 39/40) must be accessible in production for field programming.
Because the PIC16C774-E/P is OTP, any bug in the final firmware image is permanent - this is the single most common pitfall. For engineering builds use the windowed PIC16C774/JW or the flash-based PIC16F877A-I/P, freeze the firmware, then commit to OTP for production. Also note that the brown-out-reset voltage and watchdog timeout must be configured by configuration fuses, which are written once and cannot be changed on OTP parts.
Informações de conformidade
RoHS, REACH, lead-free, and halogen-free status not present in the verified distributor data; confirm against the Microchip product page or material declaration before qualifying for compliance-controlled designs.
