PIC16F18425-E/ST - 8-bit MCU, 14KB Flash, 32MHz XLP | Microchip
MPN: PIC16F18425-E/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.05 | $2.05 |
| 10 | $1.85 | $18.50 |
| 100 | $1.62 | $162.00 |
| 500 | $1.44 | $720.00 |
| 1,000 | $1.28 | $1,280.00 |
PIC16F18425-E/ST Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data bus, optimized for deterministic real-time control with low power consumption, small die size, and low cost. PIC microcontrollers use a RISC-based Harvard architecture where the program memory bus is separate from the data memory bus, enabling most instructions to execute in a single clock cycle. Within the broader hierarchy, the PIC16F18425 belongs to PIC16F1xxx enhanced mid-range core MCUs -> 8-bit PIC microcontrollers -> Microcontrollers -> Integrated Circuits -> Semiconductors.
Key features include 2x PWMs, a hardware 12-bit ADC with computation (ADCC), a 5-bit DAC, comparators, CWG (Complementary Waveform Generator), and communication peripherals (EUSART, SPI, I2C). The integrated 12-bit ADCC automates averaging, oversampling, and threshold-based decision making without CPU intervention, which is critical for sensor signal chains and motor control loops. XLP technology provides deep sleep modes with sub-microamp current draw.
The architecture pairs a 32MHz internal oscillator (8MHz with 4x PLL) with 49 instructions including hardware multiply. The 14-pin TSSOP footprint gives designers access to 12 I/O pins while occupying only 5.0mm x 4.4mm of board area, with an industrial -40C to +125C operating range. Memory partitioning includes a 256-byte data EEPROM and 1KB SRAM.
Typical applications include consumer appliance control, IoT sensor nodes, battery-powered handheld instruments, LED lighting controllers, and industrial sensor interfaces. The combination of CIPs and XLP also suits remote controls and wearable health monitors where deterministic response and low quiescent current are both required.
When designing with this MCU, prioritize pin assignment for the dedicated I2C/SPI/EUSART pins to avoid remapping latency. For ADC accuracy, place a 0.1uF decoupling capacitor adjacent to each power pin and follow the datasheet reference layout for the analog AVSS/AVDD pair to minimize digital switching noise coupling.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F18425-E/ST — 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/ST (same form factor and footprint) — differing in ADC, Core, Package, Operating Temperature Range, Maximum CPU Frequency.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18425-I/ST
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.95 / Unit
View Datasheet →PIC16F18424-E/ST
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.81 / Unit
View Datasheet →PIC16F18325-E/ST
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.98 / Unit
View Datasheet →PIC16F18324-E/STVAO
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.12 / Unit
View Datasheet →PIC16F1823-E/P
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.24 / Unit
View Datasheet →PIC16F18425-E/ST Maximum Ratings & Electrical Characteristics
| Core | PIC 8-bit enhanced mid-range |
| Family | PIC16(L)F184xx |
| Program Memory (Flash) | 14KB (8K x 14 words) |
| RAM | 1KB |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage Range | 1.8V to 5.5V (F version) |
| Package | 14-TSSOP (ST) |
| Number of I/O Pins | 12 |
| ADC | 12-bit ADCC, up to 11 channels |
| DAC | 5-bit DAC |
| Comparators | Yes |
| PWM Channels | 2 |
| CWG | Complementary Waveform Generator |
| Communication | EUSART, SPI, I2C |
| Operating Temperature | -40C to +125C (E suffix) |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
PIC16F18425-E/ST Pin Configuration
| Pin 1 | RA3/AN3/C1IN3+/CWG1FLT — GPIO RA3 with ADC ch1, and CWG fault input (per datasheet) |
| Pin 2 | RA4/AN4/C1OUT/T0CKI — GPIO RA4 with ADC ch4, comparator output, Timer0 clock input |
| Pin 3 | RA5/AN5/DAC5OUT/C2IN1- — GPIO RA5 with ADC ch5, 5-bit DAC output, comparator input |
| Pin 4 | RA0/AN0/C1IN0-/ICSPCLK — GPIO RA0 with ADC ch0, comparator input, ICSP clock |
| Pin 5 | RA1/AN1/C1IN1-/ICSPDAT — GPIO RA1 with ADC ch1, comparator input, ICSP data |
| Pin 6 | RA2/AN2/C1IN2+/VREF- — GPIO RA2 with ADC ch2, comparator input, negative voltage reference |
| Pin 7 | VDD — Positive power supply (1.8V to 5.5V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RC0/SOSCIO/CLKR — GPIO RC0 with secondary oscillator I/O, clock reference output |
| Pin 10 | RC1/SOSCIN — GPIO RC1 with secondary oscillator input |
| Pin 11 | RC2/AN6/CWG1A — GPIO RC2 with ADC ch6, CWG output A |
| Pin 12 | RC3/AN7/CWG1B — GPIO RC3 with ADC ch7, CWG output B |
| Pin 13 | RC4/SDA/SDAT — GPIO RC4 with I2C data / SPI data |
| Pin 14 | RC5/SCL/SCLK — GPIO RC5 with I2C clock / SPI clock |
Typical Applications
PIC16F18425-E/ST is suitable for 6 applications: IoT Sensor Nodes, Consumer Appliance Control, LED Lighting Controllers, Battery-Powered Handheld Instruments, Remote Controls and HIDs, Industrial Sensor Interfaces.
IoT Sensor Nodes
The PIC16F18425-E/ST's XLP sleep current below 1uA and 12-bit ADCC running without CPU intervention make it ideal for battery-powered IoT sensor nodes. It can sleep with the ADC still performing threshold-based wakeups, sample a thermistor or battery divider, and only wake the CPU on a threshold event, extending coin-cell lifetime to multi-year scales on typical 1% duty cycles.
Recommended
Consumer Appliance Control
The PIC16F18425-E/ST suits consumer appliance control panels where its 12 GPIO drive LED indicators, keypads, and relay outputs, while the CWG and dual PWMs control motor or valve actuation. The integrated EUSART handles the LIN bus for white-goods networks, and the industrial -40C to +125C range tolerates oven-adjacent heat. Functional Safety features assist IEC 60730 safety compliance for household appliances.
Recommended
LED Lighting Controllers
The PIC16F18425-E/ST's dual PWMs and Complementary Waveform Generator (CWG) directly drive half-bridge LED driver stages with programmable dead-band, eliminating external logic. Its 12-bit ADCC provides fine current-loop control for tunable-white and dim-to-warm fixtures, while XLP sleep modes support battery-powered emergency luminaires that must run for years on a single cell.
Recommended
Battery-Powered Handheld Instruments
The PIC16F18425-E/ST fits handheld multimeters, portable gas detectors, and BLE-enabled diagnostic tools where its 1.8V-5.5V Vdd matches single-cell lithium or 2xAA supplies and its 32MHz core executes measurement algorithms in real time. The 14KB Flash accommodates user-interface state machines, and the 1KB RAM buffers measurement data without external memory.
Recommended
Remote Controls and HIDs
The PIC16F18425-E/ST's nanoamp sleep current and sub-microamp watchdog operation suit IR remote controls and BLE human-interface products. The integrated EUSART interfaces directly to LIN or UART BLE modules, and the 14KB Flash supports multi-protocol firmware, while the 14-pin TSSOP footprint fits inside slim handheld enclosures.
Recommended
Industrial Sensor Interfaces
The PIC16F18425-E/ST's 12-bit ADCC with hardware oversampling and threshold detection handles 4-20mA loop sensors and bridge-strain gauge conditioning in industrial PLCs without taxing the CPU. The CWG generates precision excitation waveforms for ratiometric sensors, and the EUSART bridges to RS-485 transceivers for factory automation networks. The -40C to +125C range matches industrial cabinet temperatures.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18425-E/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18425-I/ST | PIC16F18424-E/ST | PIC16F18325-E/ST | PIC16F18324-E/ST |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-TSSOP (ST) | 14-TSSOP (ST) - same | 14-TSSOP (ST) - same | 14-TSSOP (ST) - same | 14-TSSOP (ST) - same |
| Flash Memory | 14KB | 14KB | 7KB | 14KB | 7KB |
| RAM | 1KB | 1KB | 512B | 1KB | 512B |
| ADC Resolution | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 10-bit ADC | 10-bit ADC |
| Functional Safety (FuSa) | Yes | Yes | Yes | No | No |
| Max CPU Frequency | 32MHz | 32MHz | 32MHz | 32MHz | 32MHz |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +125C | -40C to +125C |
Key Differentiators
- 12-bit ADCC with hardware oversampling (vs PIC16F18325-E/ST)
- Functional Safety (FuSa) support (vs PIC16F18325-E/ST)
- Higher memory capacity (vs PIC16F18424-E/ST)
Design Notes
Place a 0.1uF decoupling capacitor as close as possible to pin 7 (VDD) and pin 8 (VSS). For noise-sensitive analog designs add a 10uF bulk capacitor at the VDD pin. According to the Microchip PIC16F18425 datasheet, the XLP sleep current can drop below 50nA only when all unused I/O pins are configured as outputs driving low, with no floating inputs.
For the 12-bit ADCC to achieve full 12-bit accuracy, the analog supply AVDD and AVSS (when used) must be star-grounded separately from digital VDD/VSS. Keep analog traces short and route the AVSS trace as a guard around sensitive analog pins. Decouple AVDD with both a 0.1uF ceramic and a 10uF tantalum.
The 14-pin TSSOP has 0.65mm pitch; route traces on the inner PCB layers using 0.15mm line width to keep impedance manageable. Place the ICSP programming header footprint (ICSPDAT on pin 5, ICSPCLK on pin 4) on the PCB even in production designs - this allows field firmware updates without reworking the board.
Do not leave unused I/O pins floating - configure them as outputs driving low or as inputs with internal weak pull-ups. Floating inputs draw sub-microamp leakage that destroys the XLP sleep current budget. Also, when using the internal 32MHz oscillator, verify the PLL lock flag before relying on timing-dependent peripherals like UART or PWM.
Compliance Information
RoHS and lead-free per Microchip product page. Not AEC-Q100 qualified (industrial grade, not automotive); use PIC16F18425-E/ST only in non-automotive designs. Functional Safety (FuSa) features support IEC 61508 SIL-3 capable designs.
