PIC16F18455-E/SO - 14KB Flash 8-bit MCU | Microchip XLP | 28-SOIC
MPN: PIC16F18455-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.92 | $192.00 |
| 500 | $1.72 | $860.00 |
| 1,000 | $1.55 | $1,550.00 |
PIC16F18455-E/SO Overview
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.
Drop-in alternatives for PIC16F18455-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 PIC16F18455-E/SO (same form factor and footprint) — differing in Operating Temperature, Package, ADC, Program Memory (Flash), Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18446-E/SO
✅ Drop-In✓ In Stock
$1.34 / Unit
View Datasheet →PIC16F18444-E/SO
✅ Drop-In✓ In Stock
$0.95 / Unit
View Datasheet →PIC16F18426-E/SO
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F18425-E/SO
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F1829-E/SO
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC16F18455-E/SO Maximum Ratings & Electrical Characteristics
| 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 |
| Package | 28-SOIC (7.50mm / 0.295in width) |
| Operating Temperature | -40C to +125C |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16F18455-E/SO Pin Configuration
| Pin 1 | RA5 — PORTA bit 5 / analog input |
| Pin 2 | RA4 — PORTA bit 4 |
| Pin 3 | RA3 — PORTA bit 3 / MCLR if configured |
| Pin 4 | RC5 — PORTC bit 5 |
| Pin 5 | RC4 — PORTC bit 4 |
| Pin 6 | RC3 — PORTC bit 3 |
| Pin 7 | RC2 — PORTC bit 2 |
| Pin 8 | RC1 — PORTC bit 1 |
| Pin 9 | RC0 — PORTC bit 0 |
| Pin 10 | RB7 — PORTB bit 7 |
| Pin 11 | RB6 — PORTB bit 6 / ICSP clock |
| Pin 12 | RB5 — PORTB bit 5 |
| Pin 13 | RB4 — PORTB bit 4 |
| Pin 14 | RB3 — PORTB bit 3 |
| Pin 15 | RB2 — PORTB bit 2 |
| Pin 16 | RB1 — PORTB bit 1 |
| Pin 17 | RB0 — PORTB bit 0 / ICSP data |
| Pin 18 | VDD — Positive supply voltage (1.8V to 5.5V) |
| Pin 19 | VSS — Ground reference |
| Pin 20 | RA2 — PORTA bit 2 / DAC output |
| Pin 21 | RA1 — PORTA bit 1 |
| Pin 22 | RA0 — PORTA bit 0 |
| Pin 23 | RC7 — PORTC bit 7 |
| Pin 24 | RC6 — PORTC bit 6 |
| Pin 25 | RB5 — PORTB alternate |
| Pin 26 | RA7 — PORTA bit 7 / oscillator |
| Pin 27 | RA6 — PORTA bit 6 / oscillator |
| Pin 28 | VSS — Ground reference (alternate) |
Typical Applications
PIC16F18455-E/SO is suitable for 7 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18455-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
Key Differentiators
- 14KB Flash balanced for cost and capability (vs PIC16F18444-E/SO)
- Same-family upgrade path (vs PIC16F18446-E/SO)
- 12-bit ADCC vs older 10-bit ADC (vs PIC16F1829-E/SO)
Design Notes
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.
Compliance Information
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.
