PIC16F747-I/PT - 8-bit MCU 7KB Flash 20MHz 44-TQFP | Microchip
MPN: PIC16F747-I/PT ✓ Hoạt độngPIC16F747-I/PT Tóm tắt
An 8-bit microcontroller (MCU) is a small computer-on-a-chip that integrates a CPU, non-volatile program memory (Flash/ROM), volatile working memory (RAM), and peripherals onto a single die. It sits within the broader semiconductor hierarchy as an integrated circuit > digital IC > microcontroller > embedded controller. 8-bit MCUs like the PIC16F747 are optimized for deterministic real-time control, low power consumption, and ease of programming in C or assembly, while remaining inexpensive for high-volume embedded designs.
Key features include nanoWatt power management with multiple sleep modes, an enhanced capture/compare/PWM peripheral for motor and lighting control, a 10-bit ADC with up to 14 input channels for sensor interfacing, and in-circuit serial programming (ICSP) for firmware updates without removing the device from the board. The 35-word instruction set keeps code compact, and the PIC16F7x7 architecture is source-compatible with PIC12Cxxx and PIC16C7x legacy devices, easing porting.
The PIC16F747's RISC Harvard architecture separates program and data buses, allowing simultaneous fetch and execute. The 14-bit instruction word delivers compact code density; combined with the 20 MHz oscillator this yields 5 MIPS peak throughput. The MSSP peripheral supports both master and slave SPI/I2C, while the USART enables RS-232/RS-485 links. The device operates from 2.0V to 5.5V across the industrial -40C to +85C range.
Typical applications include industrial control and sensor nodes, home appliances, automotive body electronics (non-safety), LED lighting controllers, motor control BLDC drivers, and consumer white goods. The wide peripheral mix also suits data acquisition front ends and small human-machine interface panels.
When designing with this part, ensure decoupling with a 100 nF ceramic capacitor close to VDD and provide a bulk capacitor on AVDD for ADC accuracy. Leave MCLR either tied to VDD through a 10 kohm resistor or driven by the debugger; never leave it floating.
This page synthesizes distributor stock levels, drop-in compatible variants, and design notes beyond what is shown in the manufacturer datasheet, helping procurement and embedded engineers evaluate fit quickly.
Bộ thay thế dễ dàng lắp đặt cho PIC16F747-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16F747-I/PT (cùng hình factor và footprint) — khác nhau ở Core Architecture, Package, ADC, Timers, Operating Temperature Range.
PIC16F737-I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F767-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F747-E/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F877A-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F727-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F747-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC (8-bit RISC Harvard) |
| Program Memory | 7 KB (4K x 14) Flash |
| RAM | 368 bytes |
| Maximum CPU Frequency | 20 MHz |
| Instruction Throughput | 200 ns per instruction (5 MIPS peak) |
| Operating Voltage | 2.0 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 10-bit, 14 channels |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Capture/Compare/PWM | 3 modules (Enhanced CCP) |
| Serial Interfaces | MSSP (SPI / I2C) + USART/SCI |
| Hộp | 44-TQFP (PT) 10x10 mm |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial, -I suffix) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC16F747-I/PT
| Chân 1 | VDD — Positive supply |
| Chân 2 | OSC1/CLKI — Crystal oscillator input or external clock |
| Chân 3 | OSC2/CLKO — Crystal oscillator output or clock out |
| Chân 4 | MCLR/VPP — Master clear (reset) or programming voltage |
| Chân 5 | RA0/AN0 — PORTA bit 0 / ADC input 0 |
| Chân 6 | RA1/AN1 — PORTA bit 1 / ADC input 1 |
| Chân 7 | RA2/AN2/VREF- — PORTA bit 2 / ADC input 2 / ADC VREF- |
| Chân 8 | RA3/AN3/VREF+ — PORTA bit 3 / ADC input 3 / ADC VREF+ |
| Chân 9 | RA4/AN4 — PORTA bit 4 / ADC input 4 |
| Chân 10 | RA5/AN5/SS — PORTA bit 5 / ADC input 5 / SPI slave select |
| Chân 11 | RA6/OSC2/CLKO — PORTA bit 6 / alternate OSC2 / clock out |
| Chân 12 | RA7/OSC1/CLKI — PORTA bit 7 / alternate OSC1 / clock in |
| Chân 13 | VSS — Ground reference |
| Chân 14 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| Chân 15 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Chân 16 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Chân 17 | RB3/CCP1 — PORTB bit 3 / CCP1 PWM output |
| Chân 18 | RB4 — PORTB bit 4 |
| Chân 19 | RB5/PGM — PORTB bit 5 / low-voltage ICSP |
| Chân 20 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 21 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 22 | VSS — Ground reference |
| Chân 23 | RC0/T1OSO — PORTC bit 0 / Timer1 oscillator output |
| Chân 24 | RC1/T1OSI — PORTC bit 1 / Timer1 oscillator input |
| Chân 25 | RC2/CCP2 — PORTC bit 2 / CCP2 PWM output |
| Chân 26 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 27 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 28 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 29 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Chân 30 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Chân 31 | VSS — Ground reference |
| Chân 32 | RD0 — PORTD bit 0 |
| Chân 33 | RD1 — PORTD bit 1 |
| Chân 34 | RD2 — PORTD bit 2 |
| Chân 35 | RD3 — PORTD bit 3 |
| Chân 36 | RD4 — PORTD bit 4 |
| Chân 37 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| Chân 38 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| Chân 39 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| Chân 40 | VSS — Ground reference |
| Chân 41 | RE0/RD/AN5 — PORTE bit 0 / parallel read / ADC input 5 |
| Chân 42 | RE1/WR/AN6 — PORTE bit 1 / parallel write / ADC input 6 |
| Chân 43 | RE2/CS/AN7 — PORTE bit 2 / parallel CS / ADC input 7 |
| Chân 44 | AVDD — Analog supply for ADC |
Ứng dụng tiêu biểu
PIC16F747-I/PT phù hợp cho 7 Áp dụngs: Industrial Sensor Node, HVAC Fan Motor Control, Home Appliance User Panel, Automotive Body Electronics, LED Lighting Controller, Data Acquisition Front End, Consumer White Goods.
Industrial Sensor Node
The PIC16F747-I/PT's 14 ADC channels and 36 I/O fit industrial 4-20 mA and 0-10 V sensor nodes that need to aggregate multiple analog inputs. With 7 KB Flash and 368 B RAM the part runs a Modbus RTU slave stack over the USART while polling thermocouples and pressure transducers through the ADC. The MSSP supports SPI to a local digital sensor, and the 20 MHz clock keeps the scan loop deterministic at sub-millisecond cadence.
Được đề xuất
HVAC Fan Motor Control
The PIC16F747-I/PT's three Enhanced CCP modules drive three-phase BLDC or single-phase PSC fan motors with hardware PWM generation, while the 10-bit ADC samples motor current and back-EMF for closed-loop control. Operating from 2.0-5.5 V the part runs directly from a 5 V regulator on the main HVAC board, and the USART exposes a service-diagnostic port to a technician tool. nanoWatt sleep saves power when the fan is idle.
Được đề xuất
Home Appliance User Panel
The PIC16F747-I/PT's 36 I/O drive 7-segment displays, button matrices, and indicator LEDs in washing machines, dishwashers, and microwave ovens without external I/O expanders. The MSSP I2C bus connects to an EEPROM for user-preset storage, and the USART links to the main appliance control board for status reporting. The industrial temperature grade suits the under-cabinet thermal environment.
Được đề xuất
Automotive Body Electronics
The PIC16F747-I/PT handles non-safety body modules such as seat controllers, mirror adjusters, ambient lighting drivers, and door-lock keypads. Three CCP channels drive LED strings with PWM dimming, the USART bridges to a CAN transceiver for body-network communication, and the 14 ADC channels read position potentiometers and current shunts. Operating from a 12 V regulated rail down to 2.0 V survives cold-crank conditions.
Được đề xuất
LED Lighting Controller
The PIC16F747-I/PT's Enhanced CCP generates high-resolution PWM for RGBW LED strips and architectural lighting fixtures, with 36 I/O controlling up to 12 dimmable channels through external MOSFET drivers. The 14 ADC channels read ambient light sensors and color-temperature photodiodes for closed-loop brightness control. SPI interfaces to a DMX receiver chip for stage-lighting fixtures, and the USART enables DMX-over-RS-485 fallback.
Được đề xuất
Data Acquisition Front End
The PIC16F747-I/PT samples 14 analog channels at 10-bit resolution for laboratory and field data loggers, streaming results over USART to a host PC or over SPI to an SD card. The 7 KB Flash holds calibration tables and a FAT16 sector-cache routine, while the 368 B RAM stages raw samples before DMA-equivalent peripheral-driven transfers. The 20 MHz clock sustains up to ~50 ksps aggregate conversion rate.
Được đề xuất
Consumer White Goods
The PIC16F747-I/PT is a cost-optimized controller for white-goods sub-modules such as dishwasher dispensers, refrigerator ice-makers, and coffee machine boilers. Three CCP channels drive solenoid valves and heater triacs through optocouplers, the 10-bit ADC reads thermistor NTC networks for temperature regulation, and the I2C MSSP connects to a character-LCD daughterboard. The 5 MIPS throughput handles PID control loops in firmware.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F747-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16F737-I/SP | PIC16F767-I/PT | PIC16F747-E/PT | PIC16F877A-I/PT | PIC16F727-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (10x10 mm) | 40-pin SPDIP (NOT same package) | 44-TQFP - same | 44-TQFP - same | 44-TQFP - same | 44-TQFP - same |
| Program Memory | 7 KB Flash | 7 KB Flash | 14 KB Flash (+100%) | 7 KB Flash | 14 KB Flash (+100%) | 14 KB Flash (+100%) |
| RAM | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 368 bytes |
| Maximum Frequency | 20 MHz (5 MIPS) | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| ADC Channels | 14 x 10-bit | 11 x 10-bit (-21%) | 14 x 10-bit | 14 x 10-bit | 8 x 10-bit (-43%) | 14 x 10-bit |
| I/O Pins | 36 | 25 (-31%) | 36 | 36 | 33 (-8%) | 36 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C |
Bảo phân biệt quan trọng
- Higher ADC channel count in same 44-TQFP footprint (vsPIC16F877A-I/PT)
- Extended temperature grade available (vsPIC16F747-I/PT)
- Larger Flash memory as drop-in upgrade (vsPIC16F767-I/PT)
Ghi chú thiết kế
Decouple VDD (pin 1) and AVDD (pin 44) with a 100 nF ceramic capacitor placed within 5 mm of each pin, and add a 10 uF bulk capacitor on the VDD rail. Tie AVDD and VDD together at the regulator output; separate analog and digital grounds with a star-point connection at the chip VSS pins. Insufficient decoupling is the most common cause of ADC noise and brown-out resets on the PIC16F747.
Route the 20 MHz crystal traces (OSC1/OSC2) short and symmetric, with a ground pour on the layer beneath. Keep the crystal within 5 mm of the chip. For 44-TQFP land pattern use 0.8 mm pitch pads with thermal relief on the center pad (none on this package) and a 0.15 mm solder mask dam to prevent solder wicking during reflow.
Never leave MCLR floating - either tie it to VDD through a 10 kohm resistor or drive it from the ICD debugger. Unconfigured analog pins set as outputs can source/sink only a few mA; use external drivers for LEDs or relays. The PIC16F747's parallel slave port (PORTD/PORTE) requires careful pin remapping if both ADC and PSP functions are needed simultaneously.
The MSSP in I2C mode requires external pull-up resistors on SDA/SCL (typically 4.7 kohm at 100 kHz, 2.2 kohm at 400 kHz). The USART TX output is CMOS push-pull and does not need a pull-up. When using the Enhanced CCP PWM mode, ensure the PWM frequency is below 100 kHz to avoid switching noise coupling into the ADC - estimate: FPWM = FOSC / (4 * PR2 * TMR2_prescaler).
Thông tin tuân thủ
RoHS compliance per Microchip product page ordering details. The -I suffix denotes industrial temperature grade (-40C to +85C); for automotive-grade AEC-Q100 qualified parts, use the PIC16F7x7-I/PT automotive variant or upgrade to a newer AEC-Q100 part number.