PIC16F74-I/L - 8-Bit 20MHz Flash MCU | Microchip Technology
MPN: PIC16F74-I/L ✗ Cuối đờiPIC16F74-I/L Tóm tắt
A PIC microcontroller is an embedded-processing IC that combines a CPU core, program memory, data memory, peripherals, and I/O in one device. The PIC16 family uses a compact RISC-oriented instruction architecture, and the PIC16F74 provides 35 single-word instructions according to the manufacturer product documentation. Its 200 ns instruction execution capability supports deterministic control tasks, while the 8-bit architecture is well suited to sensor reading, actuator control, communication, and industrial automation.
Key features include an 8-channel 8-bit analog-to-digital converter, two additional timers, two capture/compare/PWM functions, and a synchronous serial port configurable as 3-wire SPI or 2-wire I2C. The device also includes a USART, 192 bytes of RAM according to the distributor listing, and up to 33 I/O according to the Mouser listing. These peripherals reduce the need for external converters, communication controllers, timers, and logic in embedded products.
The PIC16F74-I/L operates from a 20 MHz maximum device clock and uses Flash program memory, allowing in-system reprogramming and supporting firmware updates. Its 44-PLCC footprint provides 33 I/O pins, making it useful where multiple discrete digital connections are required. The PLCC package is a surface-mount leaded package intended for higher pin-count embedded-control boards and legacy industrial equipment.
Typical applications include industrial control systems, data acquisition modules, instrumentation, motor and relay control, communication interfaces, and legacy embedded products. The integrated ADC is valuable for monitoring analog sensors, while SPI, I2C, and USART options allow connection to displays, transceivers, memories, and external peripherals. Timer and PWM resources support periodic control functions such as scanning, dimming, actuator timing, and signal generation.
When designing a replacement or new board, verify the 44-pin PLCC footprint, pin names, oscillator requirements, programming interface, reset behavior, and peripheral configuration. The I/L package designation should be confirmed against the manufacturer datasheet before layout release. This page combines distributor specifications, manufacturer feature information, package details, sourcing links, and application guidance for engineering evaluation.
Bộ thay thế dễ dàng lắp đặt cho PIC16F74-I/L — 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 PIC16F74-I/L (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Timers, Program Memory Size, Instruction Cycle Time.
PIC16F74-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F74T-E/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF874A-I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F74-I/L Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit CMOS Flash PIC microcontroller |
| Architecture | PIC architecture |
| Tần số xung maksimum | 20 MHz |
| Program Memory | 7 KB Flash (4K x 14) |
| RAM | 192 bytes |
| I/O Pins | 33 |
| Analog-to-Digital Converter | 8 channels, 8-bit resolution |
| Timers | 2 additional timers |
| Capture/Compare/PWM Functions | 2 |
| Synchronous Serial Port | 3-wire SPI or 2-wire I2C |
| USART | Universal Asynchronous Receiver Transmitter |
| Instruction Set | 35 single-word instructions |
| Instruction Execution | 200 ns |
| Hộp | 44-PLCC, 16.59 mm x 16.59 mm |
| Kiểu lắp đặt | Surface mount |
Hướng dẫn cấu hình chân PIC16F74-I/L 44-plcc, 16.59 mm x 16.59 mm
Cấu hình chân cho PIC16F74-I/L (44-plcc, 16.59 mm x 16.59 mm gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho PIC16F74-I/L.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
PIC16F74-I/L phù hợp cho 6 Áp dụngs: Industrial Control Systems, Data Acquisition and Instrumentation, Motor and Relay Control, Communication Interfaces, Legacy Embedded Products, LED and Display Control.
Industrial Control Systems
The PIC16F74-I/L fits industrial control boards that need local decision-making, digital I/O, analog monitoring, and serial connectivity in one device. Its 33 I/O pins can connect discrete inputs, relay drivers, status indicators, and field interfaces, while the 8-channel 8-bit ADC supports monitoring of sensor outputs. The 20 MHz clock and 200 ns instruction execution provide a basis for deterministic control loops. Before deployment, verify the device's supply-voltage limits and temperature range against the factory environment.
Được đề xuất
Data Acquisition and Instrumentation
The PIC16F74-I/L is appropriate for measurement panels requiring several analog inputs and programmable digital outputs without a separate ADC controller. The 8-channel 8-bit ADC can sample sensors, potentiometers, dividers, and process inputs, while the SPI or I2C serial port can connect displays, memory, or measurement front ends. Its Flash program memory supports field firmware configuration. Designers should define input voltage limits, sampling timing, calibration storage, and isolation requirements before finalizing the analog front end.
Được đề xuất
Motor and Relay Control
The PIC16F74-I/L can act as the supervisory controller for small motor, valve, relay, or actuator systems. Its timer resources and capture/compare/PWM functions help produce periodic timing or pulse-width-control signals, while the 33 available I/O pins support status inputs and driver-control outputs. The USART can report operating state to a host system, and the ADC can monitor feedback signals. The final design must include suitable driver transistors, flyback protection, current limits, and safe-state behavior.
Được đề xuất
Communication Interfaces
The PIC16F74-I/L is suitable for embedded serial bridges and protocol nodes because its synchronous serial port can operate as SPI or I2C and its USART supports asynchronous serial links. These resources allow one controller to manage a sensor network, display, EEPROM, radio module, or host interface while handling local control logic. The 20 MHz device clock supports efficient protocol servicing, but the designer must verify baud-rate timing, pull-up requirements, isolation, and connector requirements.
Được đề xuất
Legacy Embedded Products
The PIC16F74-I/L is a practical choice for maintaining or reproducing older embedded equipment where the existing design uses a PIC16F74 and a 44-PLCC footprint. Its 7 KB Flash memory, 192 bytes of RAM, 33 I/O pins, ADC, timers, and serial peripherals preserve the established PIC16 family control model. A migration or replacement program should verify software timing, configuration words, oscillator behavior, programming voltage, and every package pin. Existing firmware may still operate, but electrical and lifecycle review remains necessary.
Được đề xuất
LED and Display Control
The PIC16F74-I/L can coordinate LED indicators, multiplexed displays, and status panels because it combines multiple I/O pins, timers, PWM-related functions, and serial interface options. The ADC can support brightness or ambient-light control inputs, while SPI or I2C can connect to display drivers and expanders. Firmware can implement sequencing, dimming, fault indication, and keypad scanning. The electrical design should account for LED current limits, driver topology, bus capacitance, and the voltage requirements of the selected display module.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F74-I/L — 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 | PIC16F74-I/PT | PIC16F74T-E/L | PIC16LF874A-I/L |
|---|---|---|---|---|
| Package | 44-PLCC | 44-PLCC package option | 44-PLCC package option | 44-PLCC package option |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
Bảo phân biệt quan trọng
- Integrated mixed-signal and communication resources (vsPIC16LF874A-I/L)
- High I/O availability for embedded control (vsPIC16F74-I/PT)
- 20 MHz Flash-based control platform (vsPIC16F74T-E/L)
Ghi chú thiết kế
Before placing the device, confirm the exact 44-PLCC footprint and pin numbering against the manufacturer package drawing. The verified distributor data confirms the 44-PLCC package and 16.59 mm x 16.59 mm body size, but it does not provide a complete pin table. Preserve the required lead pattern, exposed component clearance, soldering profile, and programming access. Do not infer pin functions from a similarly named PLCC device.
Validate the PIC16F74-I/L supply-voltage range, oscillator configuration, reset requirements, and peripheral current limits against the manufacturer datasheet before power-up. The verified data does not provide the operating supply voltage, so it is intentionally not guessed. Use local decoupling near the device and route power and ground returns consistently. Confirm that any external ADC, transceiver, display, or actuator drivers do not exceed the device pin ratings.
Do not treat a related PIC16F74 suffix or a same-package family member as an automatic drop-in replacement. The supplied cross-reference results identify PIC16F74-I/PT, PIC16F74T-E/L, and PIC16LF874A-I/L as comparison candidates, but they do not establish identical pinout, speed grade, temperature grade, memory, peripheral behavior, or programming compatibility. Review the exact ordering code and compare every electrical and pin parameter before substitution.
Thông tin tuân thủ
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than assumed.
