PIC16F884-E/P - 20MHz 8-Bit Flash MCU | Microchip
MPN: PIC16F884-E/P ✓ Hoạt độngPIC16F884-E/P Tóm tắt
An 8-bit microcontroller is a programmable semiconductor that integrates a processor core, nonvolatile program memory, data memory, and peripherals into one device. The PIC16F884 belongs to the PIC16 family of 8-bit embedded controllers, where a compact instruction set and integrated Flash memory support economical control of appliances, instruments, lighting, and industrial equipment. Its CMOS implementation and nanoWatt technology are intended to balance processing capability with manageable power consumption.
The main verified features include 35 single-word instructions, 7 KB of self-programmable Flash, 256 bytes of RAM, 256 bytes of EEPROM, 36 I/O lines, and operation up to 20 MHz. These resources allow control firmware to maintain configuration and calibration data in EEPROM while executing routines from Flash. Self-programming is particularly useful when field updates must be stored without removing the microcontroller from its circuit.
The PIC16F884-E/P uses the enhanced -E product designation and is supplied in the 40-PDIP format identified by the distributor listings. A DIP footprint is useful for prototypes, educational systems, legacy industrial controllers, and through-hole assembly where a small-package MCU would complicate soldering or inspection. Its 36 I/O pins provide more interface capacity than smaller 14-, 18-, or 28-pin PIC devices, while the 20 MHz operating limit supports responsive control and communication tasks.
Typical applications include temperature controllers, motor and relay control, measurement instruments, LED drivers, security panels, appliance controls, and compact industrial automation modules. The combination of EEPROM, self-programming, and 36 I/O lines is useful in products that need persistent settings, field configurability, and several external sensors, switches, displays, or actuators connected directly to the controller.
A key design consideration is package and software compatibility. Because the PIC16F884-E/P is a 40-pin DIP device, the PCB footprint, connector spacing, and available board area must support a through-hole package. Firmware replacement should also account for the exact device family, oscillator configuration, memory map, peripheral set, and programming configuration rather than assuming that any 40-pin 8-bit MCU is interchangeable.
This page consolidates the verified manufacturer and distributor information for PIC16F884-E/P and identifies the few same-package references found in the supplied cross-reference data. It also adds engineering-focused comparisons, application guidance, and design cautions to help distinguish a true replacement from a merely similar microcontroller.
Bộ thay thế dễ dàng lắp đặt cho PIC16F884-E/P — 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 PIC16F884-E/P (cùng hình factor và footprint) — khác nhau ở Package, Mounting Type, RoHS Status, ADC, Core.
PIC16F884-I/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LF1517-E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F884-E/P Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit CMOS FLASH-based microcontroller |
| Maximum CPU Frequency | 20 MHz |
| Program Memory | 7 KB (4K x 14 words) |
| Data RAM | 256 bytes |
| EEPROM Data Memory | 256 bytes |
| General-Purpose I/O | 36 pins |
| Instruction Set | 35 single-word instructions |
| Processor Architecture | PIC 8-bit RISC architecture |
| Program Memory Type | FLASH, self-programmable |
| Technology | CMOS with nanoWatt technology |
| Hộp | 40-pin plastic dual in-line package (40-PDIP) |
| Total Pin Count | 40 pins |
| Kiểu lắp đặt | Through-hole DIP |
| Trạng thái RoHS | Unknown |
| REACH Status | Unknown |
Hướng dẫn cấu hình chân PIC16F884-E/P 40-pin plastic dual in-line package (40-pdip)
Cấu hình chân cho PIC16F884-E/P (40-pin plastic dual in-line package (40-pdip) 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 PIC16F884-E/P.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
PIC16F884-E/P phù hợp cho 6 Áp dụngs: Temperature and process controller, Appliance control module, LED lighting and display controller, Measurement and calibration instrument, Security and access controller, Embedded education and prototyping.
Temperature and process controller
The PIC16F884-E/P fits a compact temperature-control board because its 36 I/O pins can connect several sensors, switches, indicators, and actuator drivers without requiring a large serial expander. Its 7 KB of program Flash provides room for conversion routines, control logic, and configuration handling, while 256 bytes of EEPROM can retain setpoints and calibration values between power cycles. The device runs up to 20 MHz, permitting responsive sampling and supervisory control. In an industrial retrofit, the 40-PDIP format is especially convenient because it matches a through-hole controller board. The implementation must still use the manufacturer’s verified timing and electrical limits, and firmware should handle sensor conditioning and actuator safety independently of the MCU.
Được đề xuất
Appliance control module
A household appliance controller benefits from the PIC16F884-E/P’s combination of 36 I/O lines, 7 KB of program Flash, and 256 bytes of EEPROM. Digital inputs can represent switches, door sensors, temperature probes, and level detection, while outputs can drive relays, indicators, heaters, or display-control lines. Self-programming allows approved firmware revisions to be stored in the controller, and EEPROM can preserve operating profiles or service settings. The 40-PDIP package also supports serviceable appliances and educational appliances where technicians may replace the controller without reflow equipment. Design work should include watchdog recovery, fail-safe output states, and decoupling, while avoiding the assumption that every similar 40-pin MCU is firmware-compatible.
Được đề xuất
LED lighting and display controller
The PIC16F884-E/P can serve as the central controller in a multi-zone lighting or display system because 36 I/O lines provide substantial direct connectivity to switches, indicators, and driver-control signals. Its 20 MHz operating capability supports timed sequences, status handling, and button-responsive menus, while the 7 KB Flash capacity accommodates control tables and animation logic. EEPROM may retain brightness presets, calibration data, or installation identifiers. A through-hole 40-PDIP controller is useful in equipment assembled with through-hole LEDs, displays, and connectors. The exact peripheral resources and timing limits must be confirmed from the PIC16F884 datasheet before assigning specialized functions, and current drive should remain within the limits of external transistor or constant-current driver stages.
Được đề xuất
Measurement and calibration instrument
PIC16F884-E/P is well matched to compact measurement instruments where several front-panel inputs must coexist with stored calibration data. The 36 available I/O lines can support switches, status LEDs, range selection, and communication or transducer interfaces, while the 256-byte EEPROM provides nonvolatile space for calibration coefficients and instrument settings. Its 7 KB program Flash accommodates acquisition sequences, display-control routines, and service diagnostics, and operation up to 20 MHz enables responsive measurement control. The DIP package makes prototype instruments easy to assemble and service. For laboratory-grade accuracy, the analog front end, reference, and protection network require independent validation; the microcontroller should not be treated as a substitute for precision analog components.
Được đề xuất
Security and access controller
The PIC16F884-E/P can implement a compact access-control or alarm panel using its 36 I/O lines for keypad scanning, door contacts, relays, indicators, and status inputs. The 7 KB of program Flash is suitable for event logic, credential processing interfaces, and communication routines, while EEPROM can retain configuration and counters. Self-programming supports controlled firmware maintenance in deployed units. The 40-PDIP package is attractive for wired panels assembled through-hole and for serviceable security equipment. Designers should add fail-secure relay behavior, tamper handling, secure programming controls, and power-loss recovery because ordinary firmware logic alone cannot guarantee physical security or continuous operation.
Được đề xuất
Embedded education and prototyping
PIC16F884-E/P provides a practical platform for learning embedded control because it combines a documented 35-instruction architecture, 7 KB of Flash, 256 bytes of RAM, EEPROM, self-programming, and 36 I/O lines in an accessible 40-PDIP package. Students can connect switches, LEDs, sensors, displays, and motor drivers while learning program memory, EEPROM retention, interrupt-driven control, and mixed-voltage interfacing. The large I/O count also allows several experiments to coexist on one board. For prototypes, the through-hole package is easy to socket and replace. Before reusing an existing laboratory design, verify the oscillator circuit, programming connector, supply voltage, and complete pin assignment against the manufacturer documentation.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F884-E/P — 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 | PIC16F884-I/P | PIC16LF1517-E/P |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-PDIP | 40-PDIP | 40-PDIP |
| Program Flash | 7 KB (4K x 14 words) | 7 KB | 7 KB |
| Data RAM | 256 bytes | 256 bytes | 256 bytes |
| General-Purpose I/O | 36 pins | 36 pins | 36 pins |
| Temperature-Grade Suffix | -E | -I | -E |
Bảo phân biệt quan trọng
- Directly preserves the 40-pin through-hole footprint (vsPIC16F884T-I/PT)
- Retains the target’s verified core resource ratings (vsPIC16LF1517-E/P)
- Uses the same enhanced product-grade suffix (vsPIC16F884-I/P)
Ghi chú thiết kế
Treat the 40-PDIP footprint as a fixed mechanical commitment. Confirm row spacing, pin numbering, board-edge clearance, and socket compatibility against the package drawing rather than relying on a generic DIP drawing. Maintain unobstructed access for programming and, where present, socketed assembly. A PCB redesign is required for the 44-pin TQFP PIC16F884T-I/PT, even though it is a member of the same device family.
Verify the supply range, decoupling recommendations, and external clock requirements from the Microchip datasheet before populating the power circuit. The supplied excerpts do not provide the target’s numerical operating-voltage range, so the 1.8 V to 3.6 V value reported for PIC16LF1517-E/P must not be applied to PIC16F884-E/P. Include local supply bypass, establish a defined reset state, and validate brownout or power-loss behavior in the complete product.
Do not substitute a 40-pin MCU solely because it has the same package and similar Flash, RAM, or I/O counts. The supplied comparison lists PIC16LF1517-E/P with 7 KB Flash, 256 bytes of RAM, and 36 I/O, but also identifies a 1.8 V to 3.6 V operating range. Confirm pin functions, peripherals, registers, timing, programming configuration, and existing firmware before approving any replacement or respin.
Use self-programming and the 256-byte EEPROM carefully in deployed equipment. Validate erase-and-write timing, endurance expectations, brownout interruption behavior, and data corruption recovery before relying on field updates. Maintain a controlled programming path and avoid placing critical calibration data only in volatile RAM. For safety-related equipment, provide hardware defaults so that a reset or failed write cannot create an unsafe output state.
Separate sensitive analog and communication paths from switching outputs where practical, even though the PIC16F884-E/P is primarily a digital controller. Use the verified pinout to locate oscillator, reset, programming, and peripheral signals, then keep clock traces short and provide appropriate return paths. High fan-out relay, LED, or motor-driver loads should use local driver transistors rather than driving them directly from general-purpose I/O beyond verified current limits.
Thông tin tuân thủ
The supplied excerpts do not explicitly extract RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification evidence. AEC-Q100 is treated as not applicable because no automotive qualification claim was provided; it should not be interpreted as a verified temperature-grade statement.
