PIC16F74-E/P - 8-bit PIC MCU, 7KB Flash, 20MHz, 40-PDIP | Microchip
N.º da peça: PIC16F74-E/P ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $8.5 | $8,50 |
| 10 | $7.65 | $76,50 |
| 100 | $6.42 | $642,00 |
| 500 | $5.8 | $2.900,00 |
| 1.000 | $5.1 | $5.100,00 |
PIC16F74-E/P Visão geral
An 8-bit microcontroller (MCU) is a programmable computing IC that integrates a CPU, memory, and peripherals onto a single die. Within the MCU taxonomy the PIC16F74 belongs to the mid-range 14-bit instruction family (PIC16F), which sits above baseline 12-bit PIC10/12/12F parts and below the enhanced 16-bit PIC18 family. PIC16F mid-range devices target general-purpose embedded control in cost-sensitive industrial and consumer products where deterministic timing and low part count matter more than raw compute throughput.
Key features include a 10-bit, 8-channel Analog-to-Digital Converter (ADC), two 8-bit timers with one 16-bit timer option, two Capture/Compare/PWM (CCP) modules, an SSP configurable as either 3-wire SPI or 2-wire I2C, a USART for asynchronous/synchronous serial, a parallel slave port, and nanoWatt power management with multiple sleep modes. The extended temperature grade (-40C to +125C) suits automotive under-hood, industrial, and outdoor installations.
The PIC16F74-E/P uses a Harvard RISC architecture with a 14-bit-wide instruction word and an 8-bit-wide data path. Program execution is pipelined; instructions fetched in cycle N execute in cycle N+1, yielding near-1-MIPS-per-MHz efficiency. On-chip in-system self-programmable Flash allows field firmware updates via ICSP without removing the part from the board, while the ICD2/ICD3 debug interface supports breakpoint debugging through dedicated RB6/RB7 pins.
Typical applications include industrial motor control, HVAC actuators, automotive body controllers, appliance controls (washing machines, dishwashers), uninterruptible power supplies (UPS), and instrumentation front-ends. The combination of 8-channel ADC, PWM, and USART makes it especially attractive for closed-loop control of small DC motors, solenoid drivers, and sensor-signal conditioning where single-chip integration reduces BOM.
When designing with this device, remember that the parallel slave port shares pins with PORTD and PORTE, so using PSP mode forfeits those digital I/Os. Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of the pin, and add a 10 uF bulk capacitor on AVDD if the ADC is used.
This page consolidates distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, with cross-references verified against Microchip device documentation as of 2026-09-21.
Alternativas drop-in para PIC16F74-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 PIC16F74-E/P (mesmo formato e footprint) — diferindo em Package, Serial Interfaces, Capture/Compare/PWM, Mounting Type, Timers.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16F74-I/P
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16F74-E/P
✅ Drop-In✓ Em estoque
$5.1 / unidade
Ver ficha técnica →PIC16F747-E/ML
✅ Drop-In✓ Em estoque
$2.85 / unidade
Ver ficha técnica →PIC16F74-I/P4AP
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16C74B-04/PQ
✅ Drop-In✓ Em estoque
$7.25 / unidade
Ver ficha técnica →PIC16C74A-04I/P
✅ Drop-In✓ Em estoque
$7.5 / unidade
Ver ficha técnica →PIC16F74-E/P Classificações máximas e características elétricas
| Product Type | 8-bit Microcontroller (MCU) |
| Family | PIC16F mid-range (14-bit instruction) |
| Program Memory Type | Flash (in-system self-programmable) |
| Program Memory Size | 7 KB (4K x 14 words) |
| RAM | 192 bytes |
| Maximum CPU Frequency | 20 MHz |
| Instruction Throughput | 5 MIPS |
| I/O Pins | 33 |
| ADC | 10-bit, 8 channels |
| Timers | 2 x 8-bit + 1 x 16-bit (TMR0/TMR1/TMR2) |
| CCP Modules | 2 (Capture/Compare/PWM) |
| Serial Interfaces | SSP (SPI/I2C) + USART |
| Parallel Slave Port | Yes (PORTD/PORTE multiplexed) |
| Encapsulamento | 40-pin PDIP (Plastic DIP, through-hole) |
| Faixa de temperatura de operação | -40C to +125C (extended "E" grade) |
| Supply Voltage (VDD) | 4.0 V to 5.5 V (typical) |
| Tipo de montagem | Through-Hole (THT) |
| Nível MSL | 1 (unlimited) |
Configuração de pinos do PIC16F74-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 / Timer 0 clock input |
| Pino 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| Pino 8 | RE0/RD/AN5 — PORTE bit 0 / Parallel Slave Port read / AN5 |
| Pino 9 | RE1/WR/AN6 — PORTE bit 1 / Parallel Slave Port write / AN6 |
| Pino 10 | RE2/CS/AN7 — PORTE bit 2 / Parallel Slave Port chip select / AN7 |
| Pino 11 | VDD — Positive supply voltage (4.0 V to 5.5 V) |
| Pino 12 | VSS — Ground reference |
| Pino 13 | OSC1/CLKIN — Oscillator crystal input / external clock in |
| Pino 14 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| Pino 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / T1 clock in |
| Pino 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Pino 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| 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 / clock |
| Pino 26 | RC7/RX/DT — PORTC bit 7 / USART RX / 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 reference |
| Pino 32 | VDD — Positive supply voltage (4.0 V to 5.5 V) |
| 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 / LVP 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
PIC16F74-E/P é adequado para 6 aplicaçãos: Industrial Motor Control, Automotive Body Controllers, Appliance Control (Washing Machines, Dishwashers), HVAC Actuator Controllers, Uninterruptible Power Supplies (UPS), Instrumentation and Data Acquisition Front-Ends.
Industrial Motor Control
The PIC16F74-E/P is well suited for closed-loop DC and stepper motor control because it integrates 2 CCP/PWM channels, an 8-channel 10-bit ADC for current/voltage feedback, and a USART for host communication. With a 20 MHz oscillator delivering 5 MIPS, the MCU computes PID update loops every 200 us - fast enough for 1 kHz torque-control bandwidth on fractional-HP BLDC motors. The 33 I/O pins drive gate drivers, sense Hall sensors, and read encoder inputs without external logic. Place the part near the power stage, decouple VDD with 100 nF within 5 mm of the pin, and route ADC traces away from the switching node to keep quantization noise below 1 LSB.
Recomendado
Automotive Body Controllers
Extended-temperature PIC16F74-E/P qualifies for body-electronics modules (door locks, window lifters, mirror controllers) under the -40C to +125C automotive envelope. The 33 I/O directly drive relay coils and H-bridge MOSFETs, while the 8-channel ADC reads wiper-position potentiometers and current sense. The USART connects to a LIN or K-Line transceiver for body-network integration. NanoWatt sleep modes drop quiescent below 1 uA during parking, preserving battery life. Add an external watchdog supervisor such as MCP1316 for ASIL-rated applications.
Recomendado
Appliance Control (Washing Machines, Dishwashers)
White-goods appliance designers choose PIC16F74-E/P for its low BOM cost, 33 digital I/O for keypad and seven-segment display, and PWM channels for motor and heater control. The 7 KB Flash accommodates state-machine firmware for wash cycles, while 192 bytes of RAM handles soft timers. The 10-bit resolution is adequate for temperature-sensor thermistor bridges and water-level pressure transducers. The extended temperature grade tolerates the +85C ambient found behind a dryer drum or above an oven cavity, and through-hole PDIP simplifies hand-solder rework on legacy production lines.
Recomendado
HVAC Actuator Controllers
Heating, ventilation, and air-conditioning damper and valve actuators benefit from PIC16F74-E/P's extended temperature range and 8-channel ADC, which reads potentiometer feedback for precise damper position. Two CCP modules generate complementary PWM outputs for triac-fired heater control, while the USART interfaces to a Modbus RTU network over RS-485. The Harvard RISC pipeline produces deterministic interrupt latency critical for closed-loop airflow control. The 7 KB Flash holds calibration tables for multiple damper profiles, and 192-byte RAM buffers Modbus frames without DMA.
Recomendado
Uninterruptible Power Supplies (UPS)
Low-power UPS control boards pair PIC16F74-E/P with a battery monitor and inverter gate driver, using the 8-channel ADC to measure battery voltage, load current, and temperature. The PWM module generates the SPWM waveform for the DC-AC inverter, while the USART reports telemetry to the system host. The PIC16F74's nanoWatt sleep mode draws under 1 uA during standby, preserving battery capacity for months of shelf storage. The extended temperature range tolerates the +60C internal ambient of a sealed UPS enclosure.
Recomendado
Instrumentation and Data Acquisition Front-Ends
Portable and benchtop instruments use PIC16F74-E/P to digitize up to 8 analog signals through its 10-bit ADC and stream results to a PC via the USART or SPI. The 20 MHz CPU executes a 1 kHz multi-channel scan with averaging without dropping samples. The 33 I/O drives an LCD character display, keypad, and status LEDs without external latches. The 7 KB Flash holds calibration curves and unit-conversion tables in-system programmable for field recalibration. Use the SSP port to expand with an external 24-bit ADC like MCP3551 when 10-bit resolution is insufficient.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16F74-E/P — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16F74-I/P | PIC16F74 | PIC16F74-I/P4AP | PIC16C74B-04/P |
|---|---|---|---|---|---|
| Package | PDIP-40 | PDIP-40 (same) | PDIP-40 (same) | PDIP-40 (same) | PDIP-40 (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB Flash | 7 KB Flash | 7 KB Flash | 7 KB Flash | 4 KB OTP EPROM |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz |
| Temperature Grade | -40C to +125C (extended "E") | -40C to +85C (industrial "I") | 0C to +70C (commercial, typical) | -40C to +85C (industrial "I") | 0C to +70C (commercial) |
| Memory Type | Flash (in-system programmable) | Flash | Flash | Flash | OTP EPROM (one-time programmable) |
| I/O Pins | 33 | 33 | 33 | 33 | 33 |
| ADC | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 8-bit, 8 channels |
Principais diferenciais
- Extended temperature -40C to +125C qualification on same die (vs PIC16F74-I/P)
- Field-upgradable Flash vs one-time-programmable EPROM (vs PIC16C74B-04/P)
- 33 I/O and 8-channel ADC vs 28-pin PIC16F73 family (vs PIC16F73-I/SO)
Notas de projeto
Estimated: at 20 MHz and 5 V supply with all 33 I/O pins sourcing 20 mA, the PIC16F74-E/P draws approximately 25 mA active. VDD should be decoupled with a 100 nF ceramic capacitor placed within 5 mm of pin 11 (VDD) and pin 32 (VDD), plus a 10 uF bulk capacitor on the same rail. For ADC accuracy, separate AVDD from digital VDD with a ferrite bead and add a local 100 nF + 10 uF on AVDD. Brown-out reset is enabled via the configuration fuse BOREN to recover from VDD droops.
Route the ICSP lines RB6/PGC (pin 39) and RB7/PGD (pin 40) as short traces to a 6-pin header, with no series resistors above 470 ohm so the programmer can drive them. Keep MCLR (pin 1) above 2.05 V with a 10 kohm pull-up to VDD and a 100 nF cap to ground to filter ESD. For ADC accuracy, route analog traces (RA0-RA5, RE0-RE2) away from switching nodes, keep ground return paths short, and use a guarded analog ground island if analog and digital grounds are split.
Three common pitfalls when designing with PIC16F74-E/P: (1) Configuring the parallel slave port (PSP) on PORTD/PORTE forfeits those digital I/O functions, so do not enable PSP if you need those pins as GPIO. (2) Using the ADC with the internal 5 V reference assumes VDD is stable; if VDD drifts, use an external MCP1525 or MCP1541 voltage reference tied to RA3/VREF. (3) Selecting the wrong oscillator mode (HS vs XT vs LP) for the external crystal causes unstable operation or no startup; HS is required for 20 MHz crystals above 4 MHz.
Place the crystal (or resonator) within 10 mm of pins 13 (OSC1) and 14 (OSC2), with short traces and a ground plane underneath to minimize stray capacitance. For an external clock source, drive OSC1 with a CMOS-level clock and leave OSC2 floating. If the LVP (low-voltage programming) fuse is enabled, dedicate RB3/PGM only for programming mode - in-circuit debugging will pull it low.
Informações de conformidade
RoHS, REACH, lead-free, halogen-free, and AEC-Q100 status not specified in the verified web data sources for PIC16F74-E/P. Microchip's general policy for the PIC16F family is RoHS-compliant and lead-free; confirm with the manufacturer's product compliance certificate before AEC-Q100 use.
