PIC16F18425-E/SL - 14KB Flash 8-bit MCU 32MHz XLP | Microchip
MPN: PIC16F18425-E/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.65 | $1.65 |
| 10 | $1.48 | $14.80 |
| 100 | $1.21 | $121.00 |
| 500 | $0.99 | $495.00 |
| 1,000 | $0.86 | $860.00 |
PIC16F18425-E/SL Overview
What is a PIC 8-bit microcontroller? A PIC microcontroller is a programmable integrated circuit based on Microchip's proprietary Harvard-architecture 8-bit CPU core. PIC MCUs integrate Flash program memory, SRAM data memory, and a rich set of Core Independent Peripherals (CIPs) into a single chip. They sit within the broader category hierarchy of microcontroller -> embedded controller -> programmable logic device -> semiconductor. PIC microcontrollers are widely used across consumer, industrial, automotive, and IoT applications because they combine deterministic real-time behavior, low power consumption, and a mature MPLAB development toolchain.
Key features of the PIC16F18425-E/SL include eXtreme Low Power (XLP) technology, a 12-bit ADC with computation (ADCC), two PWM modules, a 5-bit/8-bit DAC, comparators, Complementary Waveform Generator (CWG), and serial communication via EUSART, SPI, and I2C. The part operates across 1.8V to 5.5V supply and is rated -40C to +125C industrial extended temperature range.
The PIC16F18425 utilizes Microchip's enhanced mid-range 8-bit CPU core with a 14-bit instruction word, 16-level hardware stack, and 32MHz internal oscillator. Core Independent Peripherals such as the CWG and the ADCC can operate without CPU intervention, reducing firmware complexity and enabling deterministic analog and waveform generation tasks. The XLP technology delivers nanoWatt sleep currents below 100nA typical, supporting battery-powered designs.
Typical applications include battery-powered IoT sensor nodes, low-power remote controls, HVAC thermostat controls, small motor control drivers, LED lighting controllers, and general-purpose embedded logic replacements. The 14-SOIC footprint and XLP characteristics make this device attractive for compact, energy-conscious designs.
When designing with this device, ensure decoupling capacitors (100nF plus 1uF bulk) are placed close to VDD. Verify the configuration bits via C/C++ to set oscillator source, watchdog behavior, and code protection. Use the MPLAB X IDE and XC8 compiler for code development and debugging with tools like PICkit 4 or ICD 4.
This page synthesizes distributor pricing, parametric data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F18425-E/SL — 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 PIC16F18425-E/SL (same form factor and footprint) — differing in ADC, Package, Comparators, DAC, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18424-E/SL
✅ Drop-In✓ In Stock
$0.62 / Unit
View Datasheet →PIC16F18425-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18425-E/P
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F18325-E/SL
✅ Drop-In✓ In Stock
$0.96 / Unit
View Datasheet →PIC16F1827-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1829-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18425-E/SL Maximum Ratings & Electrical Characteristics
| Product Family | PIC16(L)F184xx |
| CPU Core | 8-bit PIC (enhanced mid-range, 14-bit instruction word) |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB |
| Maximum CPU Frequency | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 5.5 V |
| Operating Temperature | -40 C to +125 C (industrial extended, 'E' suffix) |
| ADC | 12-bit ADC with Computation (ADCC) |
| Number of PWM Channels | 2 |
| DAC | 5-bit / 8-bit DAC |
| Comparators | Yes (on-chip) |
| CWG | Complementary Waveform Generator |
| Serial Interfaces | EUSART, SPI, I2C |
| Low-Power Technology | eXtreme Low Power (XLP), nanoWatt |
| Package | 14-pin SOIC (SL), 0.154" / 3.90 mm body width |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16F18425-E/SL Pin Configuration
| Pin 1 | RA3/MCLR/VPP — GPIO / Master Clear Reset / Programming voltage |
| Pin 2 | RA5/AN4/C1IN3-/TSS/CCP1/P1A — GPIO / ADC input / comparator input / PWM output |
| Pin 3 | RA4/AN3/T0KI/C1OUT — GPIO / ADC input / timer clock / comparator output |
| Pin 4 | RA2/AN2/TMR0/C1IN+ — GPIO / ADC input / timer input / comparator input |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RA1/AN1/C1IN0-/ICSPCK — GPIO / ADC input / comparator input / ICD clock |
| Pin 7 | RA0/AN0/C1IN+/ICSPDAT — GPIO / ADC input / comparator input / ICD data |
| Pin 8 | RA7/OSC1/CLKIN — GPIO / crystal oscillator input / external clock |
| Pin 9 | RA6/OSC2/CLKOUT — GPIO / crystal oscillator output / clock output |
| Pin 10 | RC0/SOSCIO/SCL/SCK — GPIO / secondary oscillator I/O / I2C clock / SPI clock |
| Pin 11 | RC1/SOSCI/SDA/SDI — GPIO / secondary oscillator input / I2C data / SPI data in |
| Pin 12 | RC2/AN6/C2IN+/SDO — GPIO / ADC input / comparator input / SPI data out |
| Pin 13 | RC3/AN7/C2IN-/SS — GPIO / ADC input / comparator input / SPI slave select |
| Pin 14 | VDD — Positive supply voltage (1.8V to 5.5V) |
Typical Applications
PIC16F18425-E/SL is suitable for 6 applications: Battery-Powered IoT Sensor Node, HVAC Thermostat Controller, LED Lighting Controller, Small DC Motor Control, Remote Control / IR Transmitter, General-Purpose Logic Replacement.
Battery-Powered IoT Sensor Node
The PIC16F18425-E/SL fits battery-powered IoT sensor nodes because its eXtreme Low Power (XLP) technology delivers typical sleep currents below 100nA, enabling years of operation on a single coin cell. The 32MHz core, 14KB Flash, and 12-bit ADCC support sensor signal conditioning and basic edge processing, while EUSART/SPI/I2C interfaces connect to radio modules like LoRa or BLE. The 1.8V minimum VDD matches directly to lithium primary cells. In a typical node, the MCU wakes on a timer interrupt, samples a sensor via ADCC, transmits a packet via SPI-attached radio, and returns to sleep - consuming minimal average current.
Recommended
HVAC Thermostat Controller
The PIC16F18425-E/SL is well suited for HVAC thermostat controllers due to its 12-bit ADCC for accurate temperature measurement from NTC thermistors or analog sensors, two PWM channels for driving valve actuators or fan speeds, and EUSART for communication with HVAC bus or display modules. XLP technology keeps standby power low for always-on wall thermostats. The 14-SOIC footprint supports compact PCB layouts behind the wall plate. A typical implementation reads temperature every few seconds via ADCC, runs a PID loop, and adjusts PWM duty cycles to maintain setpoint - all while the CWG handles dead-band timing for H-bridge outputs.
Recommended
LED Lighting Controller
The PIC16F18425-E/SL excels in LED lighting controllers thanks to its two PWM outputs with high resolution for smooth dimming and the Complementary Waveform Generator (CWG) for driving half-bridge LED driver stages. The 5/8-bit DAC allows analog color-mixing channels for RGB or tunable-white fixtures, while the 12-bit ADCC senses light levels via photodiodes for closed-loop daylight harvesting. The wide 1.8V-5.5V supply range supports both 3.3V and 5V LED driver topologies. In a tunable-white luminaire, one PWM drives warm-white LEDs, the second drives cool-white, and the CWG manages the buck FET timing for flicker-free dimming down to 1%.
Recommended
Small DC Motor Control
For small brushed DC or stepper motor control, the PIC16F18425-E/SL provides the CWG for complementary FET drive signals with programmable dead-band, two PWMs for speed/direction control, and the 12-bit ADCC for back-EMF sensing or current monitoring via shunt resistors. The 14-SOIC footprint is ideal for compact motor-control PCBs in appliances or toys. XLP technology benefits battery-powered tools where standby current matters. A typical brushed DC drive uses one PWM for speed, one GPIO for direction via H-bridge, and the CWG generates the gate timing - all deterministic and CPU-independent.
Recommended
Remote Control / IR Transmitter
The PIC16F18425-E/SL is ideal for handheld remote controls because XLP technology extends battery life, the 32MHz core executes IR protocol encoding in real time, and the small 14-SOIC package fits inside slim enclosures. The PWM outputs drive IR LEDs with precise carrier frequencies (36-56 kHz typical), while the comparator can detect low-battery conditions without ADC. A typical design uses one PWM for IR LED modulation, a few GPIOs for keypad scanning, and deep-sleep mode between button presses - drawing only nanoamps until a wake event.
Recommended
General-Purpose Logic Replacement
The PIC16F18425-E/SL serves as a flexible logic replacement for designs using discrete 74-series gates, timers, or small state machines. Its 32MHz execution, 14KB Flash for complex behavior, and on-chip peripherals (timers, PWM, ADC, comparators) replace multiple discrete ICs while adding programmability. The 14-SOIC footprint fits into DIP-14 or SOIC-14 layouts. In retrofit or redesign scenarios, the MCU replaces glue logic with a configurable, field-upgradable solution - and XLP modes minimize the standby cost compared to discrete logic.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18425-E/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18424-E/SL | PIC16F18325-E/SL | PIC16F1827-I/SL |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-SOIC (SL) | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same |
| Program Memory (Flash) | 14 KB | 8 KB | 7 KB | 7 KB |
| Data SRAM | 1 KB | 512 B | 256 B | 384 B |
| Max CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Temperature Range | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) |
| XLP Low-Power Tech | Yes | Yes | Yes | Yes |
| CWG Peripheral | Yes | Yes | Yes | No |
| ADC Type | 12-bit ADCC | 12-bit ADCC | 10-bit ADC | 10-bit ADC |
Key Differentiators
- Largest flash density in 14-SOIC PIC16F184xx family (vs PIC16F18424-E/SL)
- 12-bit ADCC with computation vs 10-bit ADC on older generation (vs PIC16F1827-I/SL)
- Extended -40C to +125C industrial temperature range (vs PIC16F18425-I/SL)
Design Notes
Estimated: at VDD=3.3V and 32MHz active, the PIC16F18425 draws approximately 3-5mA active, dropping to under 1uA in sleep mode with XLP enabled. For battery-powered designs, configure the device for periodic wake via WDT or external interrupt rather than polling. Place a 100nF ceramic decoupling capacitor within 5mm of the VDD pin and a 1uF to 10uF bulk capacitor on the supply rail. According to the datasheet, unused pins should be configured as outputs low to minimize current leakage.
Route the ICSPDAT and ICSPCK signals (pins 6 and 7) to a dedicated debug header with no series resistors, to allow in-circuit programming and debugging. According to Microchip layout guidelines, place the ICSP header at the board edge to simplify probe access. Keep the crystal traces (RA6/RA7 if used) short and shield them with a ground pour to minimize EMI. For 14-SOIC, ensure adequate copper area for thermal dissipation under the exposed pad area (where present).
Do not leave the MCLR pin floating - tie it to VDD via a 10k ohm resistor for normal operation, or leave it accessible for ICSP via a header. According to the datasheet, the configuration bits must be set correctly to select the oscillator source; leaving them unprogrammed can leave the device in an unknown state. The 14-SOIC version shares the same pinout as the 18424 and 18325 family members but verify pinout against the actual device marking. Configuration bit settings for code protection and WDT behavior should be reviewed before production programming.
When using the ADC, place the analog input traces away from digital switching signals and keep them short. According to the datasheet, the ADCC requires a stable reference voltage - either VDD or a separate reference pin. For high-precision ADC readings, average multiple samples to reduce noise, and add an external RC filter (typically 1k ohm + 100nF) on analog inputs to filter switching noise. Enable the ADC's hardware accumulation feature for oversampling when high effective resolution is needed.
Compliance Information
RoHS and REACH compliant per Microchip product page. Lead-free and halogen-free packaging. AEC-Q100 qualification not applicable - this is a general-purpose MCU; Microchip offers AEC-Q100 qualified PIC16F variants separately. The E temperature grade is -40C to +125C industrial extended range.
