PIC16F882-I/SO - 8-Bit 20MHz MCU 3.5KB Flash 28-SOIC | Microchip
MPN: PIC16F882-I/SO ✓ Hoạt độngPIC16F882-I/SO Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip processor integrating CPU, RAM, non-volatile program memory, and peripherals (timers, ADC, communication modules) into one package. PIC microcontrollers occupy the broader category microcontrollers -> microcomputer -> embedded processor -> semiconductor. They are widely used as the central controller in cost-sensitive embedded designs where deterministic instruction execution and low power matter more than raw processing throughput, and they typically out-perform discrete logic solutions in flexibility and BOM density.
Key features of this part include a 10-bit ADC with up to 11 input channels, two 8-bit timers plus one 16-bit timer, Capture/Compare/PWM (CCP) modules, an Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART), Master Synchronous Serial Port (MSSP) for SPI/I2C, two analog comparators, and a wide operating voltage range of 2.0 V to 5.5 V. The internal 8 MHz and 31 kHz oscillators, 16-level watchdog timer, and self-programming support simplify single-chip designs and field firmware upgrades.
The PIC16F882 uses a Harvard-architecture RISC core with separate program and data buses, plus integrated debug via In-Circuit Debugger (ICD). NanoWatt Technology provides dynamic power-saving modes (idle, sleep with WDT, etc.). Brown-out Reset (BOR), Power-on Reset (POR), and configurable code protection harden designs against supply transients and firmware theft.
Typical applications include industrial control panels, appliance control boards, automotive body and interior subsystems, low-end sensor hubs, LED lighting controllers, battery chargers, remote controls, and small consumer products. The combination of EEPROM data storage and self-programming makes the part suitable for field-upgradeable firmware with non-volatile parameter retention.
When designing with this device, ensure decoupling (100 nF + bulk) is placed within 5 mm of VDD, and respect the 25 mA per I/O pin sink/source limit. Use Microchip's MPLAB XC8 toolchain and pickit debugger ecosystem for code development; the ICD pins (RB6/RB7) require no external components for debug. Pin assignment must keep RA pins analog-capable inputs for ADC use.
This page synthesizes distributor pricing, drop-in alternatives, application examples, and practical design notes not found in the manufacturer datasheet. Pairs of pin-compatible PIC16F family alternates are explored in the alternatives section.
Bộ thay thế dễ dàng lắp đặt cho PIC16F882-I/SO — 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 PIC16F882-I/SO (cùng hình factor và footprint) — khác nhau ở Package, Timers, Core Architecture, Operating Temperature, ADC.
PIC16F883-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F884-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F886-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F887-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F882-E/SS
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F882-E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F882-I/SO Tỷ lệ tối đa & tính chất điện
| Architecture | PIC16 8-bit RISC (Harvard) |
| Program Memory (Flash) | 3.5 KB (2K x 14 instructions) |
| SRAM | 128 bytes |
| EEPROM | 128 bytes |
| Maximum CPU Frequency | 20 MHz |
| Supply Voltage Range | 2.0 V to 5.5 V |
| Nhiệt độ hoạt động | -40C to +85C (Industrial grade) |
| I/O Pins | 25 |
| ADC | 10-bit, up to 11 channels |
| Timers | Two 8-bit + one 16-bit |
| Communication | EUSART, MSSP (SPI/I2C) |
| Comparators | 2 analog comparators |
| Hộp | 28-pin SOIC (SO), 7.50 mm body width |
| Kiểu lắp đặt | Surface Mount |
| Instruction Count | 35 single-word instructions |
| Trạng thái RoHS | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes |
Cấu hình chân PIC16F882-I/SO
| Chân 1 | RE3/MCLR/VPP — Digital input RE3, master clear (reset) input, programming voltage input |
| Chân 2 | RA0/AN0/ULPWU — Bidirectional I/O, analog input AN0, ultra-low-power wake-up input |
| Chân 3 | RA1/AN1 — Bidirectional I/O, analog input AN1 |
| Chân 4 | RA2/AN2 — Bidirectional I/O, analog input AN2 |
| Chân 5 | RA3/AN3/VREF+ — Bidirectional I/O, analog input AN3, ADC reference voltage positive input |
| Chân 6 | RA4/T0CKI/C1OUT — Bidirectional I/O, Timer0 clock input, comparator 1 output |
| Chân 7 | RA5/AN4/SS/C2OUT — Bidirectional I/O, analog input AN4, SPI slave select, comparator 2 output |
| Chân 8 | VSS — Ground reference |
| Chân 9 | RA7/OSC1/CLKIN — Bidirectional I/O, oscillator crystal input, external clock input |
| Chân 10 | RA6/OSC2/CLKOUT — Bidirectional I/O, oscillator crystal output, clock output |
| Chân 11 | RC0/T1OSO/T1CKI — Bidirectional I/O, Timer1 oscillator output, Timer1 clock input |
| Chân 12 | RC1/T1OSI/CCP2 — Bidirectional I/O, Timer1 oscillator input, CCP2 capture/compare/PWM |
| Chân 13 | RC2/P1A/CCP1 — Bidirectional I/O, PWM1 output, CCP1 capture/compare/PWM |
| Chân 14 | RC3/SCK/SCL — Bidirectional I/O, MSSP SPI clock, MSSP I2C clock |
| Chân 15 | RC4/SDI/SDA — Bidirectional I/O, MSSP SPI data in, MSSP I2C data |
| Chân 16 | RC5/SDO — Bidirectional I/O, MSSP SPI data out |
| Chân 17 | RC6/TX/CK — Bidirectional I/O, EUSART transmit, EUSART clock |
| Chân 18 | RC7/RX/DT — Bidirectional I/O, EUSART receive, EUSART data |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply voltage |
| Chân 21 | RB0/AN12/INT — Bidirectional I/O, analog input AN12, external interrupt |
| Chân 22 | RB1/AN10/PGM/C12IN2- — Bidirectional I/O, analog input AN10, low-voltage programming, comparator input |
| Chân 23 | RB2/AN8 — Bidirectional I/O, analog input AN8 |
| Chân 24 | RB3/AN9/PGM — Bidirectional I/O, analog input AN9, low-voltage programming |
| Chân 25 | RB4/AN11 — Bidirectional I/O, analog input AN11 |
| Chân 26 | RB5/AN13 — Bidirectional I/O, analog input AN13 |
| Chân 27 | RB6/ICSPCLK/ICDCLK — Bidirectional I/O, ICSP clock, ICD clock |
| Chân 28 | RB7/ICSPDAT/ICDDAT — Bidirectional I/O, ICSP data, ICD data |
Ứng dụng tiêu biểu
PIC16F882-I/SO phù hợp cho 6 Áp dụngs: Industrial Control Panels, Appliance Control Boards, Automotive Body and Interior Modules, Remote Control and Sensor Nodes, Battery Chargers and Smart Power, LED Lighting Controllers.
Industrial Control Panels
The PIC16F882-I/SO's 5 MIPS throughput at 20 MHz, 11-channel 10-bit ADC, and EUSART fit industrial panel applications such as HMI controllers, machine status indicators, and low-rate process loops. The -40C to +85C industrial temp grade handles factory-floor thermal swings, and 128 bytes EEPROM retain set-point values across power cycles. The 25 I/O pins with 25 mA drive directly sink LED indicators and pull small relays without external buffers. The PIC's deterministic instruction set simplifies real-time logic for safety interlocks; the MSSP peripherals talk to I2C sensors and SPI LED drivers for a fully integrated panel controller.
Được đề xuất
Appliance Control Boards
The PIC16F882-I/SO is a strong match for major-appliance controller boards (washing machines, dishwashers, microwave ovens) where 8-bit PIC determinism, 2.0 V to 5.5 V supply tolerance, and integrated peripherals (CCP for motor PWM, EUSART for display communication, ADC for sensing) reduce BOM. Brown-out Reset prevents corruption under noisy ac-rectified rails. The 128-byte EEPROM stores user presets (temperature, mode, timer) without external non-volatile memory. The 28-SOIC footprint has 1.27 mm pin pitch, supporting robust through-hole or surface-mount assembly lines common to home appliance manufacturing.
Được đề xuất
Automotive Body and Interior Modules
The PIC16F882-I/SO fits interior lighting, seat-position controllers, HVAC blend actuators, and small accessory modules where cost efficiency outweighs high compute demands. The 10-bit ADC reads thermistor or potentiometer inputs, and the 8-bit timers drive PWM outputs for LED dimming or small motor control. Use the PIC16F882-E/SO variant for underhood or engine-bay temperatures (-40C to +125C); the I-grade variant suits cabin and seat-mounted modules. NanoWatt Technology sleep modes consume microamps in standby, extending battery life when doors or hoods rest unoccupied. AES-resistant PIC instruction set resists tampering for automotive anti-theft peripheral use.
Được đề xuất
Remote Control and Sensor Nodes
Battery-powered remote controls, sensor nodes, and RF base stations fit the PIC16F882-I/SO footprint. The 2.0 V minimum supply lets a 2x AA/AAA battery stack power the device without boost converters down to a low-battery cutoff. NanoWatt sleep mode (current measured in microamps) is ideal for quiescent-dominant designs such as PIR-triggered alarm panels or remote-controlled ceiling fans. The MSSP peripheral talks to 2.4 GHz transceivers (nRF24L01, CC2500) over SPI, while the internal 8 MHz oscillator removes the need for an external crystal in less-timing-sensitive nodes. With EUSART the same chip drives legacy 433 MHz transmitter modules or RS-485 sensor buses.
Được đề xuất
Battery Chargers and Smart Power
The PIC16F882-I/SO drives chargers for 1- to 4-cell Li-ion packs, low-voltage DC adapters, or solar charge controllers in a 28-SOIC package. The 10-bit ADC with 11 channels monitors cell voltage, charge current, and temperature inputs; CCP modules drive MOSFET gate waveforms for synchronous buck/boost topology. EEPROM retains charging curve parameters across power cycles. The 35-instruction RISC core simplifies compiler code generation, while the 2.0 V to 5.5 V supply range operates directly from a single-cell Li-ion (3.0 V to 4.2 V) without LDO overhead, maximizing charger efficiency and minimizing BOM.
Được đề xuất
LED Lighting Controllers
The PIC16F882-I/SO controls constant-current LED drivers in architectural lighting, signage, and RGB strips. The 11-channel ADC multiplexes over current-sensing shunts and thermistor inputs to track LED junction temperature, while the CCP and timer-peripheral PWM outputs drive multiple LED channels. EEPROM stores dimming curves, color presets, and scenes that survive power loss. The MSSP supports addressable LED protocols (WS2812B/SK6812 via SPI bit-bang). The wide 2.0 V to 5.5 V supply range makes the part tolerant of dimmer-derived and rectified mains inputs, with internal brown-out reset cleanly handling noisy off-state waveforms.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F882-I/SO — 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 | PIC16F883-I/SO | PIC16F884-I/SO | PIC16F886-I/SO | PIC16F887-I/SO | PIC16F882-E/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Program Memory | 3.5 KB | 7.2 KB | 7.2 KB | 14.3 KB | 14.3 KB | 3.5 KB |
| SRAM | 128 bytes | 256 bytes | 256 bytes | 368 bytes | 368 bytes | 128 bytes |
| EEPROM | 128 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 128 bytes |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C |
| Supply Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| I/O Pins | 25 | 25 | 25 | 25 | 36 | 25 |
Bảo phân biệt quan trọng
- Larger memory headroom with same footprint (vsPIC16F883-I/SO)
- Better low-power sleep for battery applications (vsGeneric PIC18F)
- EEPROM-based parameter storage (vsPIC16F72 (legacy))
- Industrial temperature grade in a robust SOIC body (vsPIC16F882-I/SS (SSOP))
Ghi chú thiết kế
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 20) and a second similar cap on the AVVDD reference pins if used. For designs operating below 4 MHz add a 10 uF bulk capacitor near the VDD pin to support sleep-to-active inrush. The brown-out reset is configurable via config bits (BORV setpoint) - leave BOR enabled for reliable startup on noisy supply rails. Estimated: with 25 mA peak I/O drive plus MCU active current at 20 MHz, target supply design supports 50 mA continuous without LDO saturation.
Do not leave the MCLR/VPP pin floating - tie through a 10 kohm pull-up to VDD even if no reset is asserted; leaving it floating causes spurious resets. When using the MCLR function, ensure the cap on MCLR is limited to <100 nF to allow correct rise time of the internal reset signal. For ICD debugging leave RB6/RB7 dedicated to debug; using them as I/O requires careful trace design. When migrating from PIC16F72 or similar older mid-range parts, verify the analog comparator output pin mapping - some legacy assignments differ on the PIC16F882 family.
Route analog input traces (AN0-AN13) away from digital switching traces by at least 3-5 mm. Keep AVDD separated from VDD at the PCB level when precision ADC readings are required (one ferrite bead + 10 uF cap on the AVDD rail is a common pattern). Place the crystal or resonator as close as possible to RA6/OSC2 and RA7/OSC1 pins. Estimated: an 11-channel ADC multiplexer settles in 1.6 us with 50 ohm source impedance at 20 MHz; keep analog source impedance below 10 kohm for best INL/DNL performance.
The PIC16F882-I/SO at 20 MHz draws approximately 8 mA active, and the SOIC package can dissipate up to 800 mW at room temperature (per Microchip datasheet thermal resistance figures). In industrial (-40C to +85C) designs the chip will rarely encounter thermal shutdown because active current is so low; however, in output-heavy designs where 25 mA per pin is sourced simultaneously across 25 pins, the cumulative current approaches 625 mA. Estimated: with all 25 I/O at 25 mA and an ambient of 25C, junction temperature rise is well under 10C thanks to the wide 28-SOIC thermal pad-free package - no heatsink needed.
Thông tin tuân thủ
RoHS-compliant per Microchip product documentation. Not AEC-Q100 qualified; for automotive applications requiring AEC-Q100 contact Microchip about PIC16F188xx family which has automotive-grade variants.
