PIC16LF18854-E/SO - 8-bit XLP MCU, 7KB Flash, 32MHz, 28-SOIC | Microchip
MPN： PIC16LF18854-E/SO ✓ 啟用中PIC16LF18854-E/SO 概覽
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.
直接替換替代品，適用於 PIC16LF18854-E/SO — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC16LF18854-E/SO （相同外形與佔位） — 差異在於 ADC, Package, Program Memory (Flash), Communication Interfaces, Core Independent Peripherals.
PIC16F18854-E/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF18856-E/SO
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16F18856-E/SO
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16LF18854-E/SO 最大額定值與電氣特性
| 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 |
| 封裝 | 28-pin SOIC wide-body (SO) |
| 安裝類型 | Surface Mount |
| 工作溫度範圍 | -40C to +125C (E suffix) |
| Low-Power Technology | eXtreme Low Power (XLP), nanoWatt |
| Core Independent Peripherals | CLC, CWG, NCO, DSM, HLT, CRC/SCAN |
| RoHS 狀態 | Compliant |
PIC16LF18854-E/SO 腳位配置
| 腳位 1 | RA3/VPP — PORTA bit 3 / ICSP VPP |
| 腳位 2 | RA1 — PORTA bit 1 (analog capable) |
| 腳位 3 | RA2 — PORTA bit 2 (analog capable) |
| 腳位 4 | RA0 — PORTA bit 0 (analog capable) |
| 腳位 5 | VSS — Ground |
| 腳位 6 | RA7 — PORTA bit 7 (digital only, PPS-limited) |
| 腳位 7 | RA6 — PORTA bit 6 (digital only) |
| 腳位 8 | RA5 — PORTA bit 5 (analog capable) |
| 腳位 9 | RA4 — PORTA bit 4 (analog capable) |
| 腳位 10 | RC0 — PORTC bit 0 |
| 腳位 11 | RC1 — PORTC bit 1 |
| 腳位 12 | RC2 — PORTC bit 2 |
| 腳位 13 | RC3 — PORTC bit 3 |
| 腳位 14 | RC4 — PORTC bit 4 |
| 腳位 15 | RC5 — PORTC bit 5 |
| 腳位 16 | RC6 — PORTC bit 6 |
| 腳位 17 | RC7 — PORTC bit 7 |
| 腳位 18 | RB7 — PORTB bit 7 |
| 腳位 19 | VSS — Ground (second ground pin) |
| 腳位 20 | VDD — Positive supply |
| 腳位 21 | RB2 — PORTB bit 2 |
| 腳位 22 | RB3 — PORTB bit 3 |
| 腳位 23 | RB4 — PORTB bit 4 |
| 腳位 24 | RB5 — PORTB bit 5 |
| 腳位 25 | RB6 — PORTB bit 6 / ICSPCLK |
| 腳位 26 | RB1 — PORTB bit 1 (analog capable) |
| 腳位 27 | RB0 — PORTB bit 0 (analog capable, ICSPDAT) |
典型應用
PIC16LF18854-E/SO 適用於 6 應用s: 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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16LF18854-E/SO — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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 |
主要差異化特點
- Wide 1.8V-3.6V supply range without 5V tolerance. (對比PIC16F18854-E/SO)
- Same 28-SOIC footprint, fully pin-compatible with 18854 family. (對比PIC16F18856-E/SO)
- NanoWatt XLP sleep currents below 100nA typical. (對比PIC16F18854-E/SO)
- PPS flexibility + CLC + CWG + NCO core-independent peripherals. (對比AVR ATmega328P-AU (28-pin SMD))
設計說明
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.
合規資訊
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.
