PIC16F18854-E/SO - 32MHz 8-bit MCU 7KB Flash 28-SOIC | Microchip
MPN: PIC16F18854-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.3 | $2.30 |
| 10 | $2.05 | $20.50 |
| 100 | $1.78 | $178.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.34 | $1,340.00 |
PIC16F18854-E/SO Overview
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.
Drop-in alternatives for PIC16F18854-E/SO — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16F18854-E/SO (same form factor and footprint) — differing in ADC, DAC, Operating Temperature, Package, Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18854-I/SO
✅ Drop-In✓ In Stock
$0.82 / Unit
View Datasheet →PIC16F18854-E/SP
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16F18855-I/SO
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.29 / Unit
View Datasheet →PIC16F18856-I/SP
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.48 / Unit
View Datasheet →PIC16F18346-I/SO
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F18455-E/SO
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F18456-I/SO
✅ Drop-In✓ In Stock
$1.72 / Unit
View Datasheet →PIC16F18854-E/SO Maximum Ratings & Electrical Characteristics
| 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 |
| Operating Temperature | -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) |
| Package | 28-pin SOIC wide-body (SO) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | 1 |
| Programming | ICSP (In-Circuit Serial Programming) |
PIC16F18854-E/SO Pin Configuration
| Pin 1 | RA2/AN2/DAC1OUT2/T0CKI/COG1FLT/INT2 — GPIO RA2 / analog channel 2 / DAC output 2 / Timer0 clock / INT2 |
| Pin 2 | RA3/AN3/VREF+/C1IN+/C2IN+/COG1BI — GPIO RA3 / analog channel 3 / VREF+ / comparator input |
| Pin 3 | RA4/AN4/C2OUT/T1G/COG1FIN — GPIO RA4 / analog channel 4 / comparator 2 output / Timer1 gate |
| Pin 4 | RA5/AN5/SS2/T2IN/COG1OUT/DAC1OUT1 — GPIO RA5 / analog channel 5 / SPI2 slave select / DAC1 output 1 |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RA1/AN1/C1IN0-/C2IN0-/ICSPCLK — GPIO RA1 / analog channel 1 / comparator input / ICSP clock |
| Pin 7 | RA0/AN0/C1IN0+/C2IN0+/ICSPDAT — GPIO RA0 / analog channel 0 / comparator input / ICSP data |
| Pin 8 | RB7/AN21/C2OUT/SMBI2C/CWG1D/ICSPDAT — GPIO RB7 / analog channel 21 / ICSP data (alternate) |
| Pin 9 | RB6/AN20/SCK2/SCL2/CWG1C/ICSPCLK — GPIO RB6 / SPI clock 2 / I2C clock 2 / ICSP clock (alternate) |
| Pin 10 | RB5/AN19/SDI2/SDA2/CWG1B — GPIO RB5 / SPI data in 2 / I2C data 2 |
| Pin 11 | RB4/AN18/SDO2/CWG1A — GPIO RB4 / SPI data out 2 |
| Pin 12 | RB3/AN17/CCP1/C1OUT/COG1OE — GPIO RB3 / CCP1 PWM / comparator 1 output |
| Pin 13 | RB2/AN16/C2IN3-/CCP2 — GPIO RB2 / CCP2 PWM / comparator input |
| Pin 14 | RB1/AN10/C1IN3-/C2IN2-/EUSART_TX — GPIO RB1 / analog channel 10 / EUSART transmit |
| Pin 15 | RB0/AN12/C2IN1+/CCP3/INT/EUSART_RX — GPIO RB0 / EUSART receive / INT external interrupt |
| Pin 16 | VSS — Ground reference (alternate pin) |
| Pin 17 | VDD — Positive supply voltage 2.3 V to 5.5 V |
| Pin 18 | RB8/AN8/C1IN2-/C2IN1-/SDO2 — GPIO RB8 / analog channel 8 / comparator input |
| Pin 19 | RA7/AN7/C1OUT/COG1A/CCP4 — GPIO RA7 / analog channel 7 / comparator 1 output / CCP4 |
| Pin 20 | RA6/AN6/C2OUT/COG1B/CCP5 — GPIO RA6 / analog channel 6 / comparator 2 output / CCP5 |
| Pin 21 | RC0/AN10/T1CKI/SOSCO — GPIO RC0 / analog channel 10 / Timer1 clock / secondary oscillator |
| Pin 22 | RC1/AN11/CCP6/T3CKI/SOSCI — GPIO RC1 / analog channel 11 / CCP6 / Timer3 clock / secondary oscillator in |
| Pin 23 | RC2/AN13/C2IN-/CCP7/CWG1D — GPIO RC2 / analog channel 13 / comparator input / CCP7 |
| Pin 24 | RC3/AN14/C2IN+/CCP8/COG1C — GPIO RC3 / analog channel 14 / comparator input / CCP8 |
| Pin 25 | RC4/AN15/CCP9/MDOUT — GPIO RC4 / analog channel 15 / CCP9 |
| Pin 26 | RC5/AN16/CCP10/MDCIN1 — GPIO RC5 / analog channel 16 / CCP10 |
| Pin 27 | RC6/AN17/SS1/CCP11 — GPIO RC6 / analog channel 17 / SPI1 slave select |
| Pin 28 | MCLR/VPP/RE3 — Master Clear reset / programming voltage / GPIO RE3 |
Typical Applications
PIC16F18854-E/SO is suitable for 7 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18854-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
Key Differentiators
- Largest temperature grade range in family (vs PIC16F18854-I/SO)
- More CIPs and peripherals than lower-cost siblings (vs PIC16F18346-I/SO)
- More Flash than PIC16F18455 in lower part numbers (vs PIC16F18455-E/SO)
Design Notes
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.
Compliance Information
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.
