PIC16F18425-I/JQ - 14KB Flash 8-bit MCU | Microchip UQFN-16
MPN: PIC16F18425-I/JQ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.46 | $2.46 |
| 10 | $2.21 | $22.10 |
| 100 | $1.97 | $197.00 |
| 500 | $1.75 | $875.00 |
| 1,000 | $1.55 | $1,550.00 |
PIC16F18425-I/JQ Overview
An 8-bit microcontroller (MCU) is a single-chip processor that integrates a CPU, non-volatile program memory (Flash), volatile working memory (RAM), and peripheral interfaces on a single die. Within the broader semiconductor taxonomy, an 8-bit MCU sits below 32-bit Cortex-M MCUs in computational throughput but excels in deterministic interrupt response, low power consumption, and BOM cost. The PIC16F18425 belongs to the eXtreme Low Power (XLP) family, optimized for battery-powered and energy-harvesting applications.
Key features include a 12-bit Analog-to-Digital Converter with Computation (ADCC), a 5-bit DAC, two PWM modules, a Comparator, Complementary Waveform Generator (CWG), EUSART, SPI, and I2C interfaces. The on-chip Core Independent Peripherals (CIPs) handle tasks such as signal conditioning and waveform generation without CPU intervention, reducing firmware complexity and power consumption. Operating voltage spans 1.8 V to 3.6 V (L-suffix variant) or 2.3 V to 5.5 V (F-suffix variant), with sleep current below 50 nA typical.
Architecturally, the PIC16F18425 uses a 14-bit instruction word RISC core with hardware stack and Peripheral Pin Select (PPS) for flexible pin mapping. The CWG peripheral can synthesize complementary PWM outputs with programmable dead-band for half-bridge driver control, eliminating external timing components in motor-drive and Class-D audio front-ends.
Typical applications include IoT sensor nodes, battery-powered wearables, low-cost motor control (fans, pumps, small BLDCs), LED lighting controllers, and consumer appliances. Its 1 KB RAM and 14 KB Flash are well matched to protocols such as LIN, Modbus RTU, and SMBus slave stacks.
Design tip: route the exposed pad (EP) to a continuous ground copper pour with multiple thermal vias to achieve the rated thermal performance; floating EPs degrade ADC accuracy and long-term reliability in high-vibration environments.
This page synthesizes distributor pricing, drop-in PIC16F184xx siblings, and practical design notes not found in the manufacturer datasheet, providing engineers with a curated comparison reference.
Drop-in alternatives for PIC16F18425-I/JQ — 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-I/JQ (same form factor and footprint) — differing in Package, ADC, Program Memory (Flash), DAC, CWG.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18425-E/JQ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18424-I/JQ
✅ Drop-In✓ In Stock
$1.2 / Unit
View Datasheet →PIC16F18325-I/JQ
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F1825-I/JQ
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F18425-I/JQ Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 8-bit RISC |
| Maximum CPU Speed | 32 MHz |
| Program Memory (Flash) | 14.336 KB (8K x 14 words) |
| Data RAM | 1 KB (1024 bytes) |
| Data EEPROM | 256 bytes |
| Package | 16-pin UQFN with Exposed Pad (UQFN-16-EP, 4x4 mm) |
| Operating Voltage Range (F suffix) | 2.3 V to 5.5 V |
| ADC | 12-bit ADCC (Analog-to-Digital Converter with Computation) |
| DAC | 5-bit DAC |
| PWM Modules | 2x (16-bit) |
| Comparator | Yes |
| CWG | Complementary Waveform Generator |
| Communication Interfaces | EUSART, SPI, I2C |
| Peripheral Pin Select (PPS) | Yes |
| Operating Temperature Range | -40C to +85C (Industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | MSL1 (per JEDEC J-STD-020) |
| eXtreme Low Power (XLP) | Yes |
PIC16F18425-I/JQ Pin Configuration
| Pin 1 | RA5 — GPIO RA5 / PPS-mappable digital I/O |
| Pin 2 | RA4 — GPIO RA4 / PPS-mappable digital I/O |
| Pin 3 | RA3 — GPIO RA3 / PPS-mappable digital I/O (also MCLR alternate on some packages) |
| Pin 4 | RA2 — GPIO RA2 / analog input / PPS-mappable digital I/O |
| Pin 5 | RA1 — GPIO RA1 / analog input / PPS-mappable digital I/O |
| Pin 6 | RA0 — GPIO RA0 / analog input / PPS-mappable digital I/O |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — GPIO RA7 / PPS-mappable digital I/O |
| Pin 9 | RA6 — GPIO RA6 / PPS-mappable digital I/O |
| Pin 10 | RC5 — GPIO RC5 / PPS-mappable digital I/O |
| Pin 11 | RC4 — GPIO RC4 / PPS-mappable digital I/O |
| Pin 12 | RC3 — GPIO RC3 / analog input / PPS-mappable digital I/O |
| Pin 13 | RC2 — GPIO RC2 / analog input / PPS-mappable digital I/O |
| Pin 14 | RC1 — GPIO RC1 / analog input / PPS-mappable digital I/O |
| Pin 15 | RC0 — GPIO RC0 / analog input / PPS-mappable digital I/O |
| Pin 16 | VDD — Positive supply voltage (2.3 V to 5.5 V for F-suffix) |
| Pin EP | EP — Exposed thermal pad - must be soldered to ground plane for thermal dissipation and electrical reference |
Typical Applications
PIC16F18425-I/JQ is suitable for 7 applications: Battery-Powered IoT Sensor Nodes, Low-Cost BLDC Fan and Pump Motor Control, LED Lighting and Dimming Controllers, Consumer Appliance User Interface, Automotive Body Electronics (LIN Slave), Portable Medical and Wellness Devices, Industrial Sensor Transmitters.
Battery-Powered IoT Sensor Nodes
The PIC16F18425-I/JQ fits battery-powered IoT sensor nodes thanks to XLP sleep currents below 50 nA and a 1.8 V to 5.5 V operating range (L-suffix). Its 12-bit ADCC enables direct interface to temperature, humidity, and gas sensors without external signal conditioning. Combined with 14 KB Flash and 1 KB RAM, the device runs wireless sensor stacks such as LoRaWAN end-device firmware or BLE beacon routines. The UQFN-16 footprint with EP allows dense PCB layouts under coin-cell holders.
Recommended
Low-Cost BLDC Fan and Pump Motor Control
The PIC16F18425-I/JQ drives small brushless DC fans and pumps using its Complementary Waveform Generator (CWG) and 12-bit ADCC. The CWG synthesizes complementary PWM outputs with programmable dead-band, eliminating external half-bridge timing components. The 12-bit ADCC samples back-EMF for sensorless trapezoidal commutation in sub-50 W motor drives. With 32 MHz core speed and 1 KB RAM, the device handles PI control loops and fault detection firmware.
Recommended
LED Lighting and Dimming Controllers
The PIC16F18425-I/JQ provides flicker-free LED dimming using its 16-bit PWM modules and 5-bit DAC for analog color-mixing references. The CWG drives high-frequency switch-mode LED drivers with precise dead-band control, maximizing efficiency in constant-current topologies. The 1 KB RAM supports DMX-512, DALI, or 0-10 V dimming protocol stacks. Operating from 2.3 V to 5.5 V, it powers directly from rectified 3.3 V or 5 V rails without external regulators.
Recommended
Consumer Appliance User Interface
The PIC16F18425-I/JQ serves as the user-interface controller in appliances with capacitive touch buttons, rotary encoders, and LED indicators. The on-chip comparator and 5-bit DAC enable direct sensor reading without external op-amps, while 14 KB Flash supports multi-language menu firmware. PPS allows flexible pin mapping so button scan matrices, buzzer drivers, and display interfaces share pins without remapping hardware.
Recommended
Automotive Body Electronics (LIN Slave)
The PIC16F18425-I/JQ operates as a LIN slave node in body-electronics modules such as mirror controllers, seat switches, and ambient lighting. Its EUSART supports LIN 2.x with autobaud detection, while 1 KB RAM and 256 B EEPROM store calibration and node configuration. The -E (extended) temperature grade variant handles -40C to +125C under-hood environments. PPS maps the LIN transceiver, PWM outputs, and wake inputs to any available pin.
Recommended
Portable Medical and Wellness Devices
The PIC16F18425-I/JQ powers portable wellness devices such as pulse oximeters, glucometers, and digital thermometers thanks to its XLP technology and 12-bit ADCC for precision sensor readout. Sleep currents below 50 nA extend battery life past one year on CR2032 cells. The 14 KB Flash supports on-device calibration curves and BLE beacon pairing routines, while the UQFN-16 EP package fits inside slim wearable enclosures.
Recommended
Industrial Sensor Transmitters
The PIC16F18425-I/JQ drives 4-20 mA loop-powered industrial sensor transmitters with its 12-bit ADCC, 5-bit DAC for analog output, and EUSART for HART or Modbus communication. Operating from 2.3 V to 5.5 V, it boots directly from regulated 24 V loop supplies with onboard LDO. The 256-byte EEPROM stores calibration constants and unit identification across the device's 100,000-erase/write endurance rating.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18425-I/JQ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18425-E/JQ | PIC16F18424-I/JQ | PIC16F18325-I/JQ | PIC16F1825-I/JQ |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | UQFN-16 (4x4 mm) with EP | UQFN-16 (4x4 mm) with EP - same | UQFN-16 (4x4 mm) with EP - same | UQFN-16 (4x4 mm) with EP - same | UQFN-16 (4x4 mm) with EP - same |
| Program Memory (Flash) | 14.336 KB | 14.336 KB (same) | 7 KB (-51%) | 14 KB (similar) | 8 KB (-44%) |
| Data RAM | 1 KB | 1 KB (same) | 1 KB (same) | 1 KB (same) | 1 KB (same) |
| Data EEPROM | 256 B | 256 B (same) | 256 B (same) | 256 B (same) | 256 B (same) |
| Maximum CPU Speed | 32 MHz | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| CWG Peripheral | Yes | Yes (same) | Yes (same) | No | No |
| ADC Resolution | 12-bit ADCC | 12-bit ADCC (same) | 12-bit ADCC (same) | 10-bit ADC | 10-bit ADC |
| Operating Temperature | -40C to +85C | -40C to +125C (extended) | -40C to +85C (same) | -40C to +85C (same) | -40C to +85C (same) |
Key Differentiators
- Higher memory headroom over PIC16F18424 (vs PIC16F18424-I/JQ)
- CWG peripheral for half-bridge control (vs PIC16F18325-I/JQ)
- 12-bit ADCC vs 10-bit ADC on older siblings (vs PIC16F1825-I/JQ)
Design Notes
The UQFN-16-EP exposed pad must be soldered to a continuous ground copper pour with at least 4 thermal vias (0.3 mm drill, 0.5 mm pitch) to the inner ground plane. Floating the EP degrades thermal performance, increases ADC noise, and risks long-term reliability failures. Per Microchip UQFN package guidelines, keep digital traces away from the EP perimeter to maintain creepage clearance.
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 16) and a bulk 1 uF to 10 uF capacitor on the same net. The PIC16F18425 has multiple VDD/VSS pin pairs internally bussed - a single decoupling pair at the IC is sufficient for most designs. For ADC accuracy, add a small ferrite bead or 10 ohm resistor between the digital VDD and analog AVDD rail if used.
PPS (Peripheral Pin Select) allows digital peripherals to be remapped, but analog functions remain fixed to specific pins. Do not assign PPS outputs to pins that share analog channels you plan to use simultaneously - the analog mux wins. Always lock the PPS configuration after final firmware tuning using the IOL1WAY configuration bit to prevent runaway reconfiguration at runtime.
When using the CWG peripheral for high-frequency switching (above 100 kHz), keep the CWG output traces short and away from the ADC input traces to avoid switching-noise coupling. Route complementary CWG outputs as a matched pair (length-matched within 5 mm) to maintain dead-band symmetry. Place a small RC snubber (10 ohm + 1 nF) on each output if ringing exceeds 10% of the rail.
Estimated: at maximum CPU activity (32 MHz, all peripherals active) the PIC16F18425 draws roughly 6 mA from 3.3 V, dissipating about 20 mW. With the UQFN-16-EP on a 1 square inch 2-oz copper ground pour, theta_JA is approximately 50 C/W, yielding a 1 C junction rise - well within rated limits. No heatsink is required for typical applications.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose the PIC16F18425-E/JQ extended-temperature variant for non-automotive harsh environments. AEC-Q100 qualification status for the E variant not explicitly stated in verified data.
