PIC16F18325-I/JQ - 8-Bit 32MHz 14KB Flash MCU | Microchip
MPN: PIC16F18325-I/JQ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.68 | $1.68 |
| 10 | $1.51 | $15.10 |
| 100 | $1.34 | $134.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.05 | $1,050.00 |
PIC16F18325-I/JQ Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O on one die, enabling compact embedded control for products ranging from consumer appliances to automotive subsystems. The PIC16F18325 belongs to the 8-bit AVR/PIC mid-range tier of the embedded controller hierarchy, sitting between 4-bit basic controllers and 32-bit Cortex-M class MCUs, and is optimized for cost-sensitive, low-power applications. This part also implements Microchip's Functional Safety (FuSa) feature set, making it suitable for safety-critical systems needing IEC 61508 or similar compliance documentation.
Key features include 12 KB of auxiliary Flash memory access via the NVMREG, Core Independent Peripherals (CIPs) such as CLC (Configurable Logic Cell), CWG (Complementary Waveform Generator), NCO (Numerically Controlled Oscillator), 10-bit ADC with Computation, 5-bit DAC, 10-bit PWM, and CCP. Communication peripherals include EUSART, SPI, and I2C, all routable via Peripheral Pin Select (PPS) for flexible PCB layout. The XLP technology delivers nanoWatt XLP sleep currents below 100 nA in deep sleep.
The PIC16F18325 uses Microchip's enhanced mid-range core with a hardware multiplier, 49 instructions, and a 16-level hardware stack. Its internal 32 MHz oscillator eliminates external crystals for cost-sensitive designs, while an optional PLL provides high-speed operation from low-frequency sources. The CIP architecture allows complex signal generation (PWM, waveforms, FSK) without CPU intervention, freeing the core for application logic.
Typical applications include IoT sensor nodes, home automation, battery-powered consumer electronics, LED lighting controllers, low-end motor control, and functional safety subsystems in industrial and white goods. The 4x4 mm UQFN package suits space-constrained PCB designs such as wearables and compact sensor modules. The PPS flexibility lets designers remap digital peripherals to optimize routing on dense boards.
When designing with the PIC16F18325, observe the device's supply voltage range of 2.3V to 5.5V and ensure decoupling of 100 nF plus bulk capacitance near VDD. Configure PPS only to digital-capable pins, as analog functions are fixed. Use ICSP programming via the dedicated PGD/PGC pins to keep firmware upgradable in the field.
This page combines distributor pricing, drop-in alternative cross-references, and engineering design notes not present in the manufacturer datasheet, providing actionable guidance for component selection and PCB implementation.
Drop-in alternatives for PIC16F18325-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 PIC16F18325-I/JQ (same form factor and footprint) — differing in Package, ADC, Operating Temperature, DAC, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18325T-I/JQ
✅ Drop-In✓ In Stock
$0.79 / Unit
View Datasheet →PIC16F18325-E/JQ
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F18324-I/JQ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1825-I/JQ
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F18323-I/JQ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18325-I/JQ Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit enhanced mid-range |
| Family | PIC16F183xx with XLP and Functional Safety (FuSa) |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data EEPROM | 256 bytes |
| Data SRAM | 1 KB |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 16-pin UQFN (4x4 mm) |
| Mounting Type | Surface Mount |
| ADC | 10-bit with Computation |
| DAC | 5-bit |
| PWM | 10-bit |
| Communication Peripherals | EUSART, SPI, I2C |
| Core Independent Peripherals | CLC, CWG, NCO, CCP, PPS |
| Low-Power Features | XLP nanoWatt, deep sleep < 100 nA |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| RoHS Status | Compliant |
PIC16F18325-I/JQ Pin Configuration
| Pin 1 | RA5 — Bidirectional I/O, also ICSP programming clock (PGC) |
| Pin 2 | RA4 — Bidirectional I/O, also ADC input |
| Pin 3 | RA3 — Bidirectional I/O, also MCLR/Reset input |
| Pin 4 | RA2 — Bidirectional I/O, also ADC input and DAC output |
| Pin 5 | RA1 — Bidirectional I/O, also ADC input and DAC reference |
| Pin 6 | RA0 — Bidirectional I/O, also ICSP programming data (PGD) |
| Pin 7 | VSS — Ground reference |
| Pin 8 | VDD — Positive supply voltage (2.3V to 5.5V) |
| Pin 9 | RC5 — Bidirectional I/O, also PWM output and USART TX |
| Pin 10 | RC4 — Bidirectional I/O, also PWM output and USART RX |
| Pin 11 | RC3 — Bidirectional I/O, also PWM output and SPI/I2C clock |
| Pin 12 | RC2 — Bidirectional I/O, also PWM output and SPI/I2C data |
| Pin 13 | RC1 — Bidirectional I/O, also PWM output and SPI chip select |
| Pin 14 | RC0 — Bidirectional I/O, also PWM output and ADC input |
| Pin 15 | — Bidirectional I/O, also TX/CK |
| Pin 16 | RC7 — Bidirectional I/O, also RX/DT |
Typical Applications
PIC16F18325-I/JQ is suitable for 7 applications: IoT Sensor Nodes, Home Automation, Battery-Powered Consumer Electronics, LED Lighting Controllers, Low-End Motor Control, Functional Safety Subsystems, Industrial Sensor Transmitters.
IoT Sensor Nodes
The PIC16F18325-I/JQ is well suited for battery-powered IoT sensor nodes because its XLP nanoWatt technology holds deep-sleep current below 100 nA with RTC retention, extending coin-cell life into years. The 14 KB Flash accommodates LoRaWAN device drivers or BLE HCI host stacks, while 1 KB SRAM buffers sensor bursts between transmits. Core Independent Peripherals (CLC, CWG, NCO) handle wake events without CPU intervention, so the 32 MHz core stays asleep until needed. The 4x4 mm UQFN package fits inside sensor housings.
Recommended
Home Automation
The PIC16F18325-I/JQ fits smart-home controllers for switches, dimmers, and sensor hubs thanks to its 32 MHz CPU, EUSART/SPI/I2C interfaces, and 10-bit ADC with Computation. PPS pin mapping lets designers reassign I2C, SPI, and UART to free pins, simplifying PCB layout in space-constrained wall switches. The 256-byte EEPROM stores user preferences and pairing keys across power cycles without external storage. Functional Safety features support white-goods compliance.
Recommended
Battery-Powered Consumer Electronics
The PIC16F18325-I/JQ drives remote controls, toys, and personal-care devices with its 2.3V-5.5V VDD range that accepts 2x AAA alkaline or single Li-ion cells directly. XLP nanoWatt sleep mode with 100 nA typical current lets motion-sensing remote controls sit idle for years on a single coin cell. The 5-bit DAC and 10-bit PWM support LED color mixing or motor speed control, while CCP and CWG generate complementary PWM for H-bridge drivers without software overhead.
Recommended
LED Lighting Controllers
The PIC16F18325-I/JQ serves as a smart-LED controller for addressable RGB strips, architectural fixtures, and horticulture lighting. Its 10-bit PWM with Complementary Waveform Generator (CWG) produces glitch-free dimming with dead-band control, critical for high-brightness LED drivers. The 5-bit DAC combined with CLC can implement logarithmic dimming curves without CPU cycles, freeing the 32 MHz core for DMX512 or DALI protocol parsing over the EUSART peripheral.
Recommended
Low-End Motor Control
The PIC16F18325-I/JQ handles small BLDC, stepper, and brushed-DC motor control in fans, pumps, and appliances. Its 32 MHz CPU executes FOC loops on small motors, while the CWG generates complementary PWM with programmable dead-time to drive half-bridges safely. The NCO (Numerically Controlled Oscillator) produces precision step rates for stepper commutation independent of CPU load. ADC with Computation triggers ADC sampling from PWM zero-cross events for sensorless trapezoidal control.
Recommended
Functional Safety Subsystems
The PIC16F18325-I/JQ with Functional Safety (FuSa) support targets IEC 61508 SIL-1 and ISO 26262 ASIL-A subsystems in white goods, building automation, and entry-level automotive applications. Hardware windowed watchdog, dual ADC comparators, and Brown-Out Reset (BOR) with software-trap diagnostics reduce firmware burden for safety certification. The Functional Safety variants ship with FMEDA and safety manuals for direct certification use.
Recommended
Industrial Sensor Transmitters
The PIC16F18325-I/JQ interfaces 4-20 mA loop-powered transmitters, RTDs, and bridge sensors in industrial process control. Its 10-bit ADC with Computation performs oversampling and averaging without CPU overhead, while the 5-bit DAC can calibrate 4-20 mA loop current. The industrial -40C to +85C temperature range suits factory-floor environments, and 256-byte EEPROM stores calibration coefficients. PPS routes SPI to an isolated ADC front-end for high-voltage safety isolation.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18325-I/JQ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18325T-I/JQ | PIC16F18325-E/JQ | PIC16F18324-I/JQ | PIC16F1825-I/JQ | PIC16F18323-I/JQ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-UQFN (4x4 mm) | 16-UQFN (4x4 mm) - same | 16-UQFN (4x4 mm) - same | 16-UQFN (4x4 mm) - same | 16-UQFN (4x4 mm) - same | 16-UQFN (4x4 mm) - same |
| Flash Memory | 14 KB | 14 KB | 14 KB | 7 KB (-50%) | 14 KB | 4 KB (-71%) |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 512 B (-50%) |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C (extended) | -40C to +85C | -40C to +85C | -40C to +85C |
| Functional Safety (FuSa) | Yes | Yes | Yes | Yes | No | Yes |
| Core Independent Peripherals (CLC, CWG, NCO) | Yes | Yes | Yes | Yes | No | Yes |
| PPS Pin Mapping | Yes | Yes | Yes | Yes | No | Yes |
Key Differentiators
- Functional Safety (FuSa) implementation with IEC 61508 documentation (vs PIC16F1825-I/JQ)
- Core Independent Peripherals (CLC, CWG, NCO) for offloading CPU (vs PIC16F18323-I/JQ)
- PPS pin mapping flexibility (vs PIC16F18323-I/JQ)
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 8) with the shortest possible trace to the VSS ground plane. For designs operating from noisy supplies or driving PWM loads, add a 10 uF bulk capacitor near the MCU. The PIC16F18325-I/JQ operates from 2.3V to 5.5V VDD; below 2.3V the Brown-Out Reset (BOR) will assert and the device will hold in reset. Configure BOR via configuration bits to match the lowest expected supply voltage during operation.
The 16-UQFN package has an exposed thermal pad (EP) on its underside that MUST be soldered to a PCB ground pad for both thermal dissipation and electrical grounding. Per Microchip AN2335, allocate a 2.5x2.5 mm PCB land with at least 8 thermal vias (0.3 mm drill, 0.6 mm pad) connecting to the ground plane. Without proper EP soldering, the die may exceed thermal ratings under sustained high-CPU activity.
Peripheral Pin Select (PPS) mappings must be configured for digital peripherals (USART, SPI, I2C, PWM, CLC outputs) on PPS-capable pins only. Analog-capable pins can be inputs to the ADC or comparator but cannot route PPS outputs. Configuring a non-PPS pin as a PPS output will silently fail. Additionally, PPS unlock sequence requires writing 0x55, 0xAA to PPSLOCK in two consecutive instructions - omitting this step prevents mapping changes from taking effect after programming.
For high-frequency signals (32 MHz oscillator, SPI at >8 MHz), keep traces short and route over a continuous ground plane to control impedance. Place the ICSP programming header (PGD on RA0, PGC on RA5) at the board edge to allow in-circuit programming without disassembling the product. Series 10K resistors on PGD/PGC protect against programmer mis-wiring; pull-up MCLR (RA3) to VDD via 10K for normal operation.
Estimated: at 32 MHz CPU clock with 4-cycle instruction time, the I/O pin toggle rate reaches 8 MHz. To avoid ringing on fast edges, place 33 ohm series resistors on outputs driving cables or connectors longer than 50 mm. For ADC accuracy with the 10-bit ADC, reduce switching noise by placing the MCU in SLEEP during conversions (using the ADC Dedicated RC oscillator) and avoiding simultaneous PWM switching on adjacent pins during conversion windows.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial -40C to +85C temperature range. Functional Safety (FuSa) support documented separately. AEC-Q100 automotive-grade not qualified for this industrial -I variant.
