PIC16F18854-E/SO - 32MHz 8-bit MCU 7KB Flash 28-SOIC | Microchip
MPN: PIC16F18854-E/SO ✓ Hoạt độngPIC16F18854-E/SO Tóm tắt
A microcontroller (MCU) is an integrated circuit that combines a CPU, memory (Flash, RAM, EEPROM), and configurable peripherals on a single die, designed to execute firmware that reads sensors, drives actuators, and communicates with other ICs. The PIC16F18854 sits inside the broader 8-bit PIC16 family, itself a subset of Microchip's PIC mid-range MCU portfolio. eXtreme Low Power (XLP) technology places this family at the low-power end of that hierarchy, supporting idle/doze/sleep modes with nanoWatt peripherals for battery-friendly designs.
Key electrical characteristics include a 2.3V to 5.5V supply range, 256 bytes of EEPROM, 1KB of RAM, and XLP deep-sleep currents in the microamp range. The device integrates up to 25 channels of 10-bit ADC, two comparators, an 8-bit/5-bit DAC, and four 16-bit timers. Communication options include EUSART, SPI, and I2C. The 28-SOIC wide-body package provides standard 1.27mm pitch and is hand-solderable for prototype work, while still supporting automated reflow.
Architecturally, the part uses Microchip's enhanced mid-range core with a hardware accumulator, W register, and 14-bit instruction word. The CIP block allows deterministic peripheral operation without CPU intervention, freeing the core for application logic and lowering average current draw. The device is supported by MPLAB X IDE, XC8 toolchain, and the MPLAB Code Configurator (MCC) for rapid peripheral setup.
Typical applications include IoT sensor nodes, battery-powered instrumentation, low-power wireless sensor hubs, HVAC controls, lighting controllers, white-goods user interfaces, and general-purpose embedded control replacing discrete logic. The functional-safety features also suit industrial safety I/O modules and sensor fusion front-ends.
When designing with this MCU, allocate decoupling capacitors (100nF + 1uF) within 5mm of VDD, place the ICSPDAT/ICSPCLK traces with stubs shorter than 25mm, and use a 10k pull-up on MCLR if not driven by an external supervisor. Verify in MPLAB X that the chosen configuration bits match the Vdd range and oscillator selection before code generation.
This page consolidates distributor pricing, drop-in PIC16F1885x family replacements, and practical design guidance not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16F18854-E/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 PIC16F18854-E/SO (cùng hình factor và footprint) — khác nhau ở ADC, Package, Program Memory (Flash), Operating Temperature, DAC.
PIC16F18854-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18854-E/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18855-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F18856-I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F18346-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F18455-E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18456-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18854-E/SO Tỷ lệ tối đa & tính chất điện
| Core | PIC16 enhanced mid-range 8-bit |
| CPU Speed | 32 MHz (8 MIPS) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data EEPROM | 256 bytes |
| Data SRAM | 1 KB |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| Nhiệt độ hoạt động | -40 C to +125 C (Industrial, -E grade) |
| ADC | 10-bit, up to 25 channels |
| DAC | 5-bit and 8-bit (1 channel each) |
| Comparators | 2 with rail-to-rail input |
| Timers | 4 x 16-bit / 2 x 8-bit |
| PWM Modules | 4 x 10-bit CCP, 4 x 16-bit CCP |
| Communication | 1 x EUSART, 1 x MSSP (SPI / I2C) |
| I/O Pins | 25 (with interrupt-on-change) |
| XLP Sleep Current | Typ. 60 nA (RTCC + WDT) |
| Hộp | 28-pin SOIC wide-body (SO) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 1 |
| Programming | ICSP (In-Circuit Serial Programming) |
Cấu hình chân PIC16F18854-E/SO
| Chân 1 | RA2/AN2/DAC1OUT2/T0CKI/COG1FLT/INT2 — GPIO RA2 / analog channel 2 / DAC output 2 / Timer0 clock / INT2 |
| Chân 2 | RA3/AN3/VREF+/C1IN+/C2IN+/COG1BI — GPIO RA3 / analog channel 3 / VREF+ / comparator input |
| Chân 3 | RA4/AN4/C2OUT/T1G/COG1FIN — GPIO RA4 / analog channel 4 / comparator 2 output / Timer1 gate |
| Chân 4 | RA5/AN5/SS2/T2IN/COG1OUT/DAC1OUT1 — GPIO RA5 / analog channel 5 / SPI2 slave select / DAC1 output 1 |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RA1/AN1/C1IN0-/C2IN0-/ICSPCLK — GPIO RA1 / analog channel 1 / comparator input / ICSP clock |
| Chân 7 | RA0/AN0/C1IN0+/C2IN0+/ICSPDAT — GPIO RA0 / analog channel 0 / comparator input / ICSP data |
| Chân 8 | RB7/AN21/C2OUT/SMBI2C/CWG1D/ICSPDAT — GPIO RB7 / analog channel 21 / ICSP data (alternate) |
| Chân 9 | RB6/AN20/SCK2/SCL2/CWG1C/ICSPCLK — GPIO RB6 / SPI clock 2 / I2C clock 2 / ICSP clock (alternate) |
| Chân 10 | RB5/AN19/SDI2/SDA2/CWG1B — GPIO RB5 / SPI data in 2 / I2C data 2 |
| Chân 11 | RB4/AN18/SDO2/CWG1A — GPIO RB4 / SPI data out 2 |
| Chân 12 | RB3/AN17/CCP1/C1OUT/COG1OE — GPIO RB3 / CCP1 PWM / comparator 1 output |
| Chân 13 | RB2/AN16/C2IN3-/CCP2 — GPIO RB2 / CCP2 PWM / comparator input |
| Chân 14 | RB1/AN10/C1IN3-/C2IN2-/EUSART_TX — GPIO RB1 / analog channel 10 / EUSART transmit |
| Chân 15 | RB0/AN12/C2IN1+/CCP3/INT/EUSART_RX — GPIO RB0 / EUSART receive / INT external interrupt |
| Chân 16 | VSS — Ground reference (alternate pin) |
| Chân 17 | VDD — Positive supply voltage 2.3 V to 5.5 V |
| Chân 18 | RB8/AN8/C1IN2-/C2IN1-/SDO2 — GPIO RB8 / analog channel 8 / comparator input |
| Chân 19 | RA7/AN7/C1OUT/COG1A/CCP4 — GPIO RA7 / analog channel 7 / comparator 1 output / CCP4 |
| Chân 20 | RA6/AN6/C2OUT/COG1B/CCP5 — GPIO RA6 / analog channel 6 / comparator 2 output / CCP5 |
| Chân 21 | RC0/AN10/T1CKI/SOSCO — GPIO RC0 / analog channel 10 / Timer1 clock / secondary oscillator |
| Chân 22 | RC1/AN11/CCP6/T3CKI/SOSCI — GPIO RC1 / analog channel 11 / CCP6 / Timer3 clock / secondary oscillator in |
| Chân 23 | RC2/AN13/C2IN-/CCP7/CWG1D — GPIO RC2 / analog channel 13 / comparator input / CCP7 |
| Chân 24 | RC3/AN14/C2IN+/CCP8/COG1C — GPIO RC3 / analog channel 14 / comparator input / CCP8 |
| Chân 25 | RC4/AN15/CCP9/MDOUT — GPIO RC4 / analog channel 15 / CCP9 |
| Chân 26 | RC5/AN16/CCP10/MDCIN1 — GPIO RC5 / analog channel 16 / CCP10 |
| Chân 27 | RC6/AN17/SS1/CCP11 — GPIO RC6 / analog channel 17 / SPI1 slave select |
| Chân 28 | MCLR/VPP/RE3 — Master Clear reset / programming voltage / GPIO RE3 |
Ứng dụng tiêu biểu
PIC16F18854-E/SO phù hợp cho 7 Áp dụngs: Battery-Powered IoT Sensor Node, Industrial Functional-Safety I/O Module, HVAC Climate Control Board, Smart Home Lighting Controller, White Goods User Interface Board, Portable Medical Monitoring Device, General-Purpose Replacement of Discrete Logic.
Battery-Powered IoT Sensor Node
The PIC16F18854-E/SO's XLP architecture with typ. 60-nA deep-sleep current and 2.3-5.5 V supply makes it ideal for coin-cell or 2xAA powered IoT sensor nodes. The 25-channel 10-bit ADC handles multiple analog sensors (temperature, light, gas), while the EUSART/MSSP peripherals interface with sub-GHz radios like the MRF89XA. The 7 KB Flash accommodates BLE/Zigbee beacon stacks or LoRaWAN drivers, and the -40 C to +125 C range suits outdoor weather stations and agricultural sensors that experience wide temperature swings. Use sleep mode between samples to extend battery life into years.
Được đề xuất
Industrial Functional-Safety I/O Module
The PIC16F18854-E/SO's FuSa-ready CIPs - including CRC/SCAN, Hardware Limit Timer (HLT), and Windowed Watchdog Timer (WWDT) - support SIL-class functional-safety designs per Microchip's functional safety package. The 32 MHz core executes dual-channel diagnostics for safety relays and emergency-stop circuits within sub-10 ms response budgets. The 28-SOIC footprint fits standard PLC I/O card form factors, and -40 C to +125 C range covers factory floor and outdoor cabinet installations.
Được đề xuất
HVAC Climate Control Board
The PIC16F18854-E/SO's 25 ADC channels and 4 PWM outputs enable thermostats and damper controllers to read multiple zone temperatures, drive fan motors, and control HVAC actuators from a single IC. The 5/8-bit DAC generates reference voltages for thermistor bridges, while the two comparators handle over-temperature and freeze-protection interlocks without CPU intervention. The industrial temperature grade supports rooftop unit installations, and the 28-SOIC is hand-solderable for service technician repairs.
Được đề xuất
Smart Home Lighting Controller
The PIC16F18854-E/SO drives multi-channel LED lighting via its 4 PWM modules, while the 7 KB Flash runs custom dimming curves, color-mixing algorithms, and Zigbee/BLE stack overlays. The MSSP peripheral interfaces with I2C-controlled drivers (e.g., TLC59108), and the EUSART handles DMX512 or RS-485 to wall panels. Sleep currents in the nA range suit battery-backed wireless remotes. The 28-SOIC fits behind wall switches in shallow European boxes.
Được đề xuất
White Goods User Interface Board
The PIC16F18854-E/SO's 25 I/O pins drive 7-segment displays, capacitive touch via the MTCH101-like CIP, and rotary encoder inputs for washing-machine, dishwasher, and oven front panels. The 7 KB Flash holds multi-language UI strings and fault-code databases, while the 256-byte EEPROM stores user preferences and last-cycle state across power cycles. Industrial temperature rating and the small 28-SOIC footprint suit sealed behind-glass enclosures in kitchens.
Được đề xuất
Portable Medical Monitoring Device
The PIC16F18854-E/SO powers handheld pulse-oximeters, blood-pressure monitors, and glucose meters thanks to its low active current (typ. 1.5 mA at 32 MHz) and nA-level sleep. The 10-bit ADC with hardware averaging handles pulse-oximetry photodiode signal conditioning, while the MSSP peripheral drives SPI OLED displays. The 32 KB secure firmware space (7 KB Flash + boot) accommodates BLE pairing, calibration tables, and FDA traceability logs.
Được đề xuất
General-Purpose Replacement of Discrete Logic
The PIC16F18854-E/SO consolidates 5-15 discrete CMOS logic gates, latches, and timers into one programmable IC, simplifying PCB layout and BOM. The 25 I/O pins handle keypad scanning, segment driving, relay control, and serial communication in a single chip. Compared to a discrete logic design, the PIC16F18854 cuts board area, reduces current draw, and adds reconfigurability - firmware changes can replace hardware revisions without re-spinning the board.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F18854-E/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 | PIC16F18854-I/SO | PIC16F18346-I/SO | PIC16F18455-E/SO | PIC16F18456-I/SO |
|---|---|---|---|---|---|
| Brand | 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 |
| Flash Memory | 7 KB | 7 KB | 4 KB (-43%) | 8 KB (+14%) | 14 KB (+100%) |
| RAM | 1 KB | 1 KB | 512 B | 1 KB | 1 KB |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| I/O Pins | 25 | 25 | 25 | 25 | 25 |
| ADC | 10-bit, 25 ch | 10-bit, 25 ch | 10-bit, 17 ch | 10-bit, 25 ch | 10-bit, 25 ch |
| Temperature Range | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C |
| XLP Deep-Sleep Current | 60 nA | 60 nA | 60 nA | 60 nA | 60 nA |
Bảo phân biệt quan trọng
- Largest temperature grade range in family (vsPIC16F18854-I/SO)
- More CIPs and peripherals than lower-cost siblings (vsPIC16F18346-I/SO)
- More Flash than PIC16F18455 in lower part numbers (vsPIC16F18455-E/SO)
Ghi chú thiết kế
Estimated: at VDD=3.3 V, 32 MHz active, the PIC16F18854-E/SO draws typ. 1.5 mA and 60 nA in deep sleep with RTCC. Decouple VDD (pin 17) with a 100 nF ceramic plus 1 uF bulk within 5 mm of the pin. For battery operation, switch to LFINTOSC (31 kHz) and enable the secondary oscillator off-loading the system clock.
Keep ICSPDAT (pin 7 or RB7 alt) and ICSPCLK (pin 6 or RB6 alt) traces shorter than 25 mm to preserve programming signal integrity. Place the MCLR pull-up (typically 10 kOhm) close to pin 28, and add a 100 nF cap on VPP if using high-voltage programming mode. Avoid routing switching signals under the ICSP lines to prevent in-circuit programming failures during production.
When using the MSSP in I2C mode, place 2.2 kOhm to 10 kOhm pull-ups on SDA/SCL and add a series 100 ohm resistor near the MCU pin if bus capacitance exceeds 100 pF. For SPI runs above 5 MHz, keep traces matched within 10 mm and use a ground reference plane below the SPI bus to control impedance and reduce ringing on SCK/SDO/SDI.
Do not leave MCLR floating - a missing pull-up causes intermittent resets or programming failures. Configuration bits must be set to disable LVP if not using it, otherwise pin RB5/RA5 may interfere with the application circuit. Ensure VDD rises monotonically above 2.3 V on power-up, or enable the BOR via configuration bits to prevent code execution in undefined states.
Estimated: at 32 MHz full-speed operation, the PIC16F18854-E/SO dissipates about 5 mW, well within SOIC thermal limits. However, in automotive under-hood applications at +125 C ambient, ensure that nearby power components do not raise ambient above the IC's package limit. The 28-SOIC has theta_JA typ. 70 C/W, giving a junction temperature rise of only 0.35 C above ambient at full load.
Thông tin tuân thủ
Industrial-grade part; not AEC-Q100 qualified. For AEC-Q100 automotive, choose the PIC16F18854-E/SO VAO or higher automotive grade. RoHS and REACH compliant per Microchip material declaration.
