PIC16LF18854-E/SO - 8-bit XLP MCU, 7KB Flash, 32MHz, 28-SOIC | Microchip
MPN: PIC16LF18854-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.21 | $2.21 |
| 10 | $1.99 | $19.90 |
| 100 | $1.77 | $177.00 |
| 500 | $1.59 | $795.00 |
| 1,000 | $1.42 | $1,420.00 |
PIC16LF18854-E/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, RAM, and peripheral IP into one package, forming the lowest tier of embedded compute hierarchy: microcontroller -> embedded processor -> digital IC -> integrated circuit -> semiconductor. Within Microchip's portfolio, the PIC16(L)F188xx family sits in the 8-bit PIC16 mainstream mid-range tier, targeting cost-sensitive designs that need rich analog and digital peripherals plus very low standby power. The "LF" prefix denotes the wide-voltage low-Vdd variant, as distinct from the PIC16F18854 which spans 1.8V-5.5V.
Key features include eXtreme Low Power technology with claimed nanoWatt sleep currents, the ADC2 (10-bit) with up to 35 input channels and built-in automated math functions, hardware Limit Timer (HLT) and Data Signal Modulator (DSM), CRC/SCAN for memory integrity, and functional-safety support. Independent Core Peripherals like Configurable Logic Cells (CLC), Complementary Waveform Generator (CWG), and Numerically Controlled Oscillator (NCO) run without CPU intervention, freeing the core for power-down sleep.
Typical applications include battery-powered IoT sensor nodes, e-metering, smoke and CO detectors, remote controls, low-cost industrial control, and wearables. The 28-SOIC wide-body footprint is friendly to through-hole-style hand prototyping while still being surface-mount reflow-compatible, making the part attractive for low-volume builds.
When designing with this part, pay attention to the wide-body SOIC thermal pad: it has pin 1 marker to the upper-left and the standard JEDEC MS-013 land pattern. Configure PPS carefully before coding - remappable pins simplify PCB layout but require careful register setup to avoid conflicts. The 'E' suffix indicates -40C to +125C industrial-grade operating range.
Drop-in alternatives for PIC16LF18854-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 PIC16LF18854-E/SO (same form factor and footprint) — differing in ADC, Package, Program Memory (Flash), Communication Interfaces, Core Independent Peripherals.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18854-E/SO
✅ Drop-In✓ In Stock
$1.34 / Unit
View Datasheet →PIC16LF18856-E/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16F18856-E/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LF18854-E/SO Maximum Ratings & Electrical Characteristics
| Program Memory (Flash) | 7KB (4K x 14 words) |
| EEPROM | 256 bytes |
| CPU Core | 8-bit PIC16 Enhanced Mid-Range |
| Maximum CPU Speed | 32 MHz (8 MIPS) |
| Operating Voltage Range | 1.8V to 3.6V (LF family) |
| ADC | 10-bit ADC2 |
| Communication Interfaces | 2x EUSART (UART/SPI), 2x MSSP (SPI/I2C) |
| PPS (Peripheral Pin Select) | Yes |
| Package | 28-pin SOIC wide-body (SO) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +125C (E suffix) |
| Low-Power Technology | eXtreme Low Power (XLP), nanoWatt |
| Core Independent Peripherals | CLC, CWG, NCO, DSM, HLT, CRC/SCAN |
| RoHS Status | Compliant |
PIC16LF18854-E/SO Pin Configuration
| Pin 1 | RA3/VPP — PORTA bit 3 / ICSP VPP |
| Pin 2 | RA1 — PORTA bit 1 (analog capable) |
| Pin 3 | RA2 — PORTA bit 2 (analog capable) |
| Pin 4 | RA0 — PORTA bit 0 (analog capable) |
| Pin 5 | VSS — Ground |
| Pin 6 | RA7 — PORTA bit 7 (digital only, PPS-limited) |
| Pin 7 | RA6 — PORTA bit 6 (digital only) |
| Pin 8 | RA5 — PORTA bit 5 (analog capable) |
| Pin 9 | RA4 — PORTA bit 4 (analog capable) |
| Pin 10 | RC0 — PORTC bit 0 |
| Pin 11 | RC1 — PORTC bit 1 |
| Pin 12 | RC2 — PORTC bit 2 |
| Pin 13 | RC3 — PORTC bit 3 |
| Pin 14 | RC4 — PORTC bit 4 |
| Pin 15 | RC5 — PORTC bit 5 |
| Pin 16 | RC6 — PORTC bit 6 |
| Pin 17 | RC7 — PORTC bit 7 |
| Pin 18 | RB7 — PORTB bit 7 |
| Pin 19 | VSS — Ground (second ground pin) |
| Pin 20 | VDD — Positive supply |
| Pin 21 | RB2 — PORTB bit 2 |
| Pin 22 | RB3 — PORTB bit 3 |
| Pin 23 | RB4 — PORTB bit 4 |
| Pin 24 | RB5 — PORTB bit 5 |
| Pin 25 | RB6 — PORTB bit 6 / ICSPCLK |
| Pin 26 | RB1 — PORTB bit 1 (analog capable) |
| Pin 27 | RB0 — PORTB bit 0 (analog capable, ICSPDAT) |
Typical Applications
PIC16LF18854-E/SO is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Smoke/CO Detector with Long Battery Life, Industrial Process Control I/O, Remote Control / HID Devices, Wearable Health / Fitness Bands, Low-Volume / Through-Hole-Friendly Embedded Boards.
Battery-Powered IoT Sensor Nodes
The PIC16LF18854-E/SO fits battery-powered IoT sensor endpoints because it operates from a single 1.8V to 3.6V supply, supports eXtreme Low Power (XLP) sleep currents in the nanoWatt range, and integrates a 10-bit ADC2 with computation. Placed on a CR2032 or 2xAA battery rail, the device spends most of its time in deep sleep and only wakes on interrupt - for example, a periodic RTCC wake or a sensor-edge interrupt through one of the CLC outputs. With PPS, designers can place the UART or SPI sensor interface on convenient nets without changing the schematic.
Recommended
Smoke/CO Detector with Long Battery Life
Per UL 217 / EN 14604 timing requirements, detectors must run ~10 years on a single 3V battery. The PIC16LF18854-E/SO's 1.8V-3.6V supply matches 3V lithium chemistry, the ADC2 chamber read supports photoelectric or electrochemical cell front ends, and the CLC + CWG peripherals drive piezo horn signaling without waking the CPU. Industrial-grade -40C to +125C tolerance covers detector-installation environments. The wide-body 28-SOIC footprint simplifies the through-hole-style hand-assembly flow many smoke-detector manufacturers still use.
Recommended
Industrial Process Control I/O
Industrial digital I/O terminals that sink/source 24V logic levels and report via IO-Link or RS-485 benefit from the PIC16LF18854-E/SO's two EUSART ports, two SPI/I2C buses, and 10-bit ADC2 with hardware computation. The Core Independent Peripherals (CLC, NCO, DSM) handle protocol filtering without CPU load. Pin-compatible with the PIC16F18854-E/SO, the LF variant suits 3.3V industrial networks where higher ESD margins and EMI tolerance are required. Industrial-grade -40C to +125C range supports DIN-rail enclosures in uncontrolled environments.
Recommended
Remote Control / HID Devices
Low-cost IR or BLE remote controls benefit from the PIC16LF18854-E/SO's low sleep current on a coin cell, configurable mTouch capacitive buttons, and PWM peripherals to drive LED ring feedback without waking the CPU. PPS allows the IR transmit line, haptic drive, and LED matrix to share I/O pins. The small footprint of the 28-SOIC (SOIC-WB) package keeps the BOM area low for handheld layouts, and Microchip's MPLAB X + XC8 toolchain is free for hobby and OEM use.
Recommended
Wearable Health / Fitness Bands
Wearable designs favor the PIC16LF18854-E/SO because the LF process variant operates from 1.8V to 3.6V - ideal for direct Li-ion or thin-film battery operation - while the 28-SOIC wide-body remains reflow-compatible. The mTouch peripheral scans the touchpad at low average current; the EUSART links to a low-power BLE module; and CRC/SCAN memory integrity checking supports medical data storage reliability. Designers migrate easily to the PIC16F18854-E/SO for choker straps or wall-charged variants at the same footprint.
Recommended
Low-Volume / Through-Hole-Friendly Embedded Boards
The PIC16LF18854-E/SO ships in a wide-body 28-SOIC that, unlike SSOP or QFN packages, is friendly to socketed prototypes and through-hole-style hand assembly - perfect for low-volume educational and hobby boards. The 8-bit mid-range core + 7KB Flash is enough to host state machines, simple protocol stacks, and ADC-controlled PID loops without scaling to a 32-bit MCU. PIC16F18854-E/SO is a drop-in replacement for the same 28-SOIC pad, so engineers can dual-pop the B-reel for LF-only or F-only builds.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18854-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18854-E/SO | PIC16LF18856-E/SO | PIC16F18856-E/SO |
|---|---|---|---|---|
| Package | 28-SOIC (wide-body) | 28-SOIC (wide-body) - same | 28-SOIC (wide-body) - same | 28-SOIC (wide-body) - same |
| Brand | Microchip Technology | Microchip Technology (same) | Microchip Technology (same) | Microchip Technology (same) |
| Operating Voltage | 1.8V - 3.6V (LF family) | 1.8V - 5.5V (F family) | 1.8V - 3.6V | 1.8V - 5.5V |
| Operating Temperature | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C | -40C to +125C |
| Functional Safety (FuSa) | Not FuSa-classified | Functional Safety (FuSa) qualified | Not FuSa | Functional Safety (FuSa) qualified |
| CPU Core | PIC16 Enhanced Mid-Range, 32MHz / 8 MIPS | PIC16 Enhanced Mid-Range, 32MHz / 8 MIPS | PIC16 Enhanced Mid-Range, 32MHz | PIC16 Enhanced Mid-Range, 32MHz |
| ADC | 10-bit ADC2 | 10-bit ADC2 | 10-bit ADC2 | 10-bit ADC2 |
| Comm Interfaces | 2x EUSART, 2x MSSP (SPI/I2C) | 2x EUSART, 2x MSSP | 2x EUSART, 2x MSSP | 2x EUSART, 2x MSSP |
Key Differentiators
- Wide 1.8V-3.6V supply range without 5V tolerance. (vs PIC16F18854-E/SO)
- Same 28-SOIC footprint, fully pin-compatible with 18854 family. (vs PIC16F18856-E/SO)
- NanoWatt XLP sleep currents below 100nA typical. (vs PIC16F18854-E/SO)
- PPS flexibility + CLC + CWG + NCO core-independent peripherals. (vs AVR ATmega328P-AU (28-pin SMD))
Design Notes
The 28-SOIC wide-body SOIC footprint follows JEDEC MS-013. Keep the SOIC pads short, route ground on the third inner layer, and place a 100nF X7R decoupling cap on the VDD pin 20 within 50mm of the package. Avoid running high-speed digital (SPI clocks) directly underneath the SOIC body to minimize capacitive coupling into the analog VDD rail. The pin 1 dot is to the upper-left of the SOIC.
The PIC16LF18854 LF family limits VDD to 3.6V maximum; a transorb or TVS clamp is advisable on VDD if the regulator upstream is a 5V part that might have hot-plug transients. The MCU draws a low current but will tolerate any in-rush limited by the internal POR. For battery designs, derate the battery cutoff to ~1.85V (not 1.8V) to keep the program counter above the BOR threshold and to avoid memory corruption.
When migrating PIC16F18854 firmware to PIC16LF18854, verify that the maximum VDD on every peripheral is <=3.6V; pull-ups on I2C lines and external pull-ups on the reset line are the two most common 5V-leakage paths that would damage the LF variant. Also: do not enable the WDT in code unless the application requires it - in deep-sleep IoT, an inadvertent WDT reset can break deterministic wake intervals.
The PIC16LF18854's EUSART reaches 9.6Mbps at 32MHz; at high baud, the SPI / I2C rise time should be controlled with series 22-100R resistors on the clock line, and use a point-to-point topology. Pull-ups on I2C SMBus lines must be sized for the 2-3V Vdd rail - 2k2 may be too low at 1.8V; use 4k7 instead. Activate PPS with care - although flexible, remapped pins still need synchronized register writes before the peripheral is enabled.
Compliance Information
Microchip PIC16(L)F1885x family is RoHS compliant and lead-free per Microchip product page; halogen-free not explicitly stated in the verified data - marked unknown.
