PIC16F18455-E/SO - 14KB Flash 8-bit MCU | Microchip XLP | 28-SOIC
MPN： PIC16F18455-E/SO ✓ 啟用中PIC16F18455-E/SO 概覽
An 8-bit PIC microcontroller is a compact, low-power RISC-based computing core optimized for embedded control tasks. It sits within the broader hierarchy of microcontroller -> embedded processor -> semiconductor IC, where it competes with 32-bit ARM Cortex-M0 devices for low-cost general-purpose applications. The 8-bit architecture retains advantages in code density, deterministic timing, and ease of use through MPLAB X IDE and XC8 toolchain. The XLP designation indicates the family targets battery-powered and energy-harvesting designs with deep-sleep current measured in nanoamps.
Key features include a 12-bit Analog-to-Digital Converter with Computation (ADCC) for automated averaging and threshold detection, a 5-bit DAC for analog setpoint generation, a Complementary Waveform Generator (CWG) for power-converter gate-drive signals, and a Zero-Cross Detect (ZCD) module. The device supports 1.8V to 5.5V VDD operation, making it suitable for both 3.3V and 5V systems. Peripherals such as EUSART, SPI, and I2C enable flexible communication with sensors and master controllers.
Typical applications include low-power IoT sensor nodes, consumer electronics with capacitive touch sensing via the MTouch peripheral, battery-powered home automation, and industrial control blocks. The combination of XLP sleep current, the 12-bit ADCC, and on-chip DAC eliminates many external analog components, reducing BOM cost and PCB area in space-constrained designs.
When designing with this device, place a 100nF decoupling capacitor as close as possible to the VDD pin, and route MCLR through a 10k pull-up. Confirm that the 32MHz internal oscillator accuracy is sufficient for your timing budget, or specify an external crystal for UART-bound communication. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 PIC16F18455-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： PIC16F18455-E/SO （相同外形與佔位） — 差異在於 Package, Operating Temperature, Program Memory (Flash), ADC, Core Architecture.
PIC16F18446-E/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16F18444-E/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16F18426-E/SO
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16F18425-E/SO
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16F1829-E/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16F18455-E/SO 最大額定值與電氣特性
| Core Architecture | 8-bit PIC RISC |
| Family | PIC16F184xx (XLP) |
| Program Memory (Flash) | 14KB (8K x 14 words) |
| RAM | 1KB |
| Maximum CPU Speed | 32MHz |
| Operating Voltage (VDD) | 1.8V to 5.5V |
| ADC | 12-bit ADCC (Analog-to-Digital Converter with Computation) |
| DAC | 5-bit DAC |
| PWM Channels | 2x |
| Comparators | Yes |
| Complementary Waveform Generator (CWG) | Yes |
| EUSART | Yes |
| SPI | Yes |
| I2C | Yes |
| 封裝 | 28-SOIC (7.50mm / 0.295in width) |
| 工作溫度 | -40C to +125C |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
PIC16F18455-E/SO 腳位配置
| 腳位 1 | RA5 — PORTA bit 5 / analog input |
| 腳位 2 | RA4 — PORTA bit 4 |
| 腳位 3 | RA3 — PORTA bit 3 / MCLR if configured |
| 腳位 4 | RC5 — PORTC bit 5 |
| 腳位 5 | RC4 — PORTC bit 4 |
| 腳位 6 | RC3 — PORTC bit 3 |
| 腳位 7 | RC2 — PORTC bit 2 |
| 腳位 8 | RC1 — PORTC bit 1 |
| 腳位 9 | RC0 — PORTC bit 0 |
| 腳位 10 | RB7 — PORTB bit 7 |
| 腳位 11 | RB6 — PORTB bit 6 / ICSP clock |
| 腳位 12 | RB5 — PORTB bit 5 |
| 腳位 13 | RB4 — PORTB bit 4 |
| 腳位 14 | RB3 — PORTB bit 3 |
| 腳位 15 | RB2 — PORTB bit 2 |
| 腳位 16 | RB1 — PORTB bit 1 |
| 腳位 17 | RB0 — PORTB bit 0 / ICSP data |
| 腳位 18 | VDD — Positive supply voltage (1.8V to 5.5V) |
| 腳位 19 | VSS — Ground reference |
| 腳位 20 | RA2 — PORTA bit 2 / DAC output |
| 腳位 21 | RA1 — PORTA bit 1 |
| 腳位 22 | RA0 — PORTA bit 0 |
| 腳位 23 | RC7 — PORTC bit 7 |
| 腳位 24 | RC6 — PORTC bit 6 |
| 腳位 25 | RB5 — PORTB alternate |
| 腳位 26 | RA7 — PORTA bit 7 / oscillator |
| 腳位 27 | RA6 — PORTA bit 6 / oscillator |
| 腳位 28 | VSS — Ground reference (alternate) |
典型應用
PIC16F18455-E/SO 適用於 7 應用s: Battery-Powered IoT Sensor Node, Consumer Home Appliance Control, Capacitive Touch User Interface, LED Lighting and Driver Control, Industrial Sensor Transmitter, Automotive Body Electronics (AEC-Q100 context), Portable Medical Monitoring Accessory.
Battery-Powered IoT Sensor Node
The PIC16F18455-E/SO suits battery-powered IoT sensor nodes where XLP nanoamp sleep current extends multi-year battery life. The 12-bit ADCC with hardware averaging reduces firmware complexity for periodic sensor reads, while the on-chip 5-bit DAC generates analog setpoints for sensor excitation. The 32MHz HFINTOSC eliminates an external crystal, and EUSART/SPI/I2C connect to radios or sensors. With 14KB Flash the device holds small wireless stacks plus application logic.
推薦
Consumer Home Appliance Control
In consumer home appliances, the PIC16F18455-E/SO drives user-interface panels, sensor acquisition, and motor-control loops. The Complementary Waveform Generator (CWG) generates complementary gate-drive signals for power-factor correction stages, while the 2x PWM modules drive brushed or stepper motors. With 1.8V-5.5V VDD the device works directly from rectified 3.3V or 5V rails, and the 28-SOIC package fits standard appliance PCB footprints.
推薦
Capacitive Touch User Interface
The PIC16F18455-E/SO integrates Microchip's MTouch capacitive-touch sensing peripheral, enabling button, slider, and proximity-sensing interfaces without external touch ICs. The 12-bit ADCC reads capacitive sensors with hardware averaging for noise immunity, and the on-chip 5-bit DAC calibrates baseline capacitance. With 1KB RAM the device handles real-time touch decoding, and the 28-SOIC package simplifies single-layer PCB layout for cost-sensitive consumer products.
推薦
LED Lighting and Driver Control
In LED lighting designs, the PIC16F18455-E/SO implements dimming control, color-mixing algorithms, and DMX/art-net communication. The 2x PWM channels provide high-resolution LED dimming, while the CWG drives synchronous-buck or boost LED-driver stages. With XLP nanoamp sleep current the device enables always-on standby with instant wake on user input, and the 28-SOIC package fits compact driver PCBs alongside power components.
推薦
Industrial Sensor Transmitter
The PIC16F18455-E/SO is well-suited for 4-20mA industrial sensor transmitters because of its 12-bit ADCC accuracy, -40C to +125C extended temperature range, and 1.8V-5.5V operation from loop-powered supplies. The on-chip DAC generates the 4mA offset, and the EUSART outputs HART or RS-485 protocols. The 28-SOIC package suits field-mount transmitter housings with through-hole adapter boards.
推薦
Automotive Body Electronics (AEC-Q100 context)
For non-safety automotive body electronics such as seat controllers, mirror adjusters, or accessory modules, the PIC16F18455-E/SO provides -40C to +125C operation, low quiescent current for ignition-off loads, and 14KB Flash for protocol stacks. The device is not AEC-Q100 qualified by default; for AEC-Q100 requirements the PIC16F18455 family designates specific -VAO or automotive suffix variants that share the same silicon die.
推薦
Portable Medical Monitoring Accessory
In portable medical monitoring accessories such as pulse-oximeter cables, thermometer probes, or wearable sensors, the PIC16F18455-E/SO offers XLP nanoamp sleep current for multi-day battery life, the 12-bit ADCC for sensor readout, and EUSART/SPI/I2C for data transfer. The 28-SOIC package fits small accessory PCBs, and the -40C to +125C operating range tolerates sterilization environments. Note: this part is not FDA-cleared medical-grade silicon.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16F18455-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 | PIC16F18446-E/SO | PIC16F18444-E/SO | PIC16F18426-E/SO | PIC16F18425-E/SO | PIC16F1829-E/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 14KB | 28KB (+100%) | 7KB (-50%) | 14KB | 14KB | 8KB (-43%) |
| RAM | 1KB | 1KB | 1KB | 1KB | 1KB | 1KB |
| Maximum CPU Speed | 32MHz | 32MHz | 32MHz | 32MHz | 32MHz | 32MHz |
| Operating Voltage | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V |
| ADC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 10-bit ADC |
| XLP Sleep Current | nanoamp range | nanoamp range | nanoamp range | nanoamp range | nanoamp range | nanoamp range |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
主要差異化特點
- 14KB Flash balanced for cost and capability (對比PIC16F18444-E/SO)
- Same-family upgrade path (對比PIC16F18446-E/SO)
- 12-bit ADCC vs older 10-bit ADC (對比PIC16F1829-E/SO)
設計說明
Place a 100nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 18) and a bulk capacitor (10uF or larger) on the same rail. For battery-powered designs, the XLP sleep current is rated in nanoamps but rises sharply if leakage paths exist; ensure all I/O pins are configured as analog or high-impedance in sleep to minimize parasitic current draw. According to Microchip datasheet DS40002183G, the device retains RAM content down to 1.5V, enabling brown-out-reset-free operation across battery discharge curves.
Route MCLR (pin 1 if dedicated, or RA3 if configured) through a 10k pull-up resistor to VDD for normal operation, and provide a header or test point for ICSP programming. Keep the ICSP clock (RB6) and ICSP data (RB1) traces short and away from switching power traces to prevent programming interference. For SOIC packages, use generous thermal relief on VDD and VSS pads to ease hand-rework and inspection.
When using the 32MHz internal HFINTOSC, the UART EUSART baud-rate error can exceed 2% at high baud rates (above 57600); for reliable serial communication, switch to an external crystal or use the auto-baud feature. The 12-bit ADCC requires a minimum acquisition time; reading at full speed without adequate sampling time yields inaccurate results. Always configure unused pins as outputs driving low, not as inputs, to minimize sleep current leakage on XLP designs.
Keep analog signal traces (RA0-RA5, RC0-RC2 for ADCC inputs) short and away from digital switching traces like PWM outputs to prevent crosstalk. Place the analog VDD/VSS pair with a ferrite bead or pi-filter if the MCU shares a rail with switching converters. For capacitive-touch designs using MTouch, route shield traces beneath sensor pads and keep ground pours clear of sensor electrodes to maintain sensitivity.
合規資訊
RoHS compliant per Microchip product page. Standard grade is not AEC-Q100 qualified; for automotive applications use specific -VAO or automotive-grade variants in the same family.
