PIC16F18325-I/STVAO - 8-bit MCU, 14KB Flash, AEC-Q100 | Microchip
MPN: PIC16F18325-I/STVAO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.48 | $148.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.18 | $1,180.00 |
PIC16F18325-I/STVAO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data RAM, and programmable I/O peripherals into one package. The PIC16F family belongs to Microchip's enhanced mid-range 8-bit core architecture, which sits between baseline PIC10/12 devices and the 16-bit dsPIC/PIC24 line. Within the MCU hierarchy, PIC16F18325 devices fall under the XLP (Extreme Low Power) subfamily optimized for battery-powered and energy-harvesting applications where sleep current in nanoamps and active power in microamps matter.
Key differentiating features include 10-bit PWM with complementary waveform generation (CCP and CWG), Core Independent Peripherals (CIPs) such as Configurable Logic Cells (CLC) and Numerically Controlled Oscillator (NCO), 10-bit ADC, and a hardware Peripheral Pin Select (PPS) block. The AEC-Q100 Grade 1 qualification (operating temperature -40C to +125C) makes the -I/STVAO variant specifically targeted at automotive under-hood and dashboard electronics.
Architecturally, the PIC16F18325 uses a RISC Harvard architecture with a 14-bit instruction word and a 16-level hardware stack, executing most instructions in one instruction cycle. The integrated 32MHz internal oscillator eliminates the need for external crystals in many designs. Memory protection includes a write-protect bootloader region and ICSP (In-Circuit Serial Programming) for field upgrades.
Typical applications include automotive body controllers, sensor interface nodes, LED lighting drivers, low-power IoT edge nodes, and LIN-bus automotive sub-modules. The combination of small TSSOP footprint, AEC-Q100 grade, and CIP peripherals allows designers to consolidate multiple discrete analog functions onto one MCU.
When designing with this device, ensure the ICSP pins (PGD/PGC) are accessible for production programming. PPS reassignment must be initialized early in firmware to avoid signal contention during startup. For automotive designs, follow Microchip's AN2288 hardware checklist for AEC-Q100 layouts.
This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes not collected on any single manufacturer or distributor page, including a curated cross-reference of functional equivalents within the same TSSOP-14 footprint.
Drop-in alternatives for PIC16F18325-I/STVAO — 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/STVAO (same form factor and footprint) — differing in ADC, Operating Temperature, Package, Core Architecture, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18325-I/ST
✅ Drop-In✓ In Stock
$1.16 / Unit
View Datasheet →PIC16F18325-E/ST
✅ Drop-In✓ In Stock
$0.98 / Unit
View Datasheet →PIC16F18324-I/SLVAO
✅ Drop-In✓ In Stock
$0.98 / Unit
View Datasheet →PIC16F18323-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18325-I/STVAO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit Enhanced Mid-Range |
| Program Memory (Flash) | 14 KB |
| Data EEPROM | 256 bytes |
| Data SRAM | 1 KB |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Maximum CPU Frequency | 32 MHz |
| I/O Pins | 12 |
| ADC | 10-bit |
| PWM Channels | 10-bit, multiple outputs |
| CIP Peripherals | CLC, NCO, CWG, CCP |
| Peripheral Pin Select (PPS) | Yes |
| Internal Oscillator | 32 MHz (factory calibrated) |
| Operating Temperature | -40 C to +125 C (AEC-Q100 Grade 1) |
| Package | TSSOP-14 (4.4 mm body width) |
| AEC-Q100 Qualification | Qualified (Automotive) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16F18325-I/STVAO Pin Configuration
| Pin 1 | MCLR/VPP/RE3 — Reset input / programming high voltage / GPIO RE3 |
| Pin 2 | RA0 — PORTA bit 0 / analog input / ICSPDAT |
| Pin 3 | RA1 — PORTA bit 1 / analog input / ICSPCLK |
| Pin 4 | RA2 — PORTA bit 2 / analog input / DAC reference |
| Pin 5 | RA3 — PORTA bit 3 / analog input / Vref+ |
| Pin 6 | RA4 — PORTA bit 4 / analog input |
| Pin 7 | RA5 — PORTA bit 5 / analog input |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7 — PORTA bit 7 / analog input / DAC output |
| Pin 10 | RA6 — PORTA bit 6 / analog input |
| Pin 11 | RC0 — PORTC bit 0 / analog input |
| Pin 12 | RC1 — PORTC bit 1 / analog input |
| Pin 13 | RC2 — PORTC bit 2 / analog input |
| Pin 14 | VDD — Positive supply voltage 1.8V-5.5V |
Typical Applications
PIC16F18325-I/STVAO is suitable for 6 applications: Automotive Body Control Modules, Battery-Powered IoT Sensor Nodes, LED Lighting Drivers and Dimmers, Industrial Sensor Signal Conditioning, LIN Bus Automotive Sub-Modules, Consumer Appliance Control Boards.
Automotive Body Control Modules
The PIC16F18325-I/STVAO fits automotive body control modules because its AEC-Q100 Grade 1 qualification and -40C to +125C operating range allow direct mounting inside door, mirror, and seat modules. Its 14KB Flash holds typical BEM/CEM firmware including door-lock sequencing, mirror-fold algorithms, and CAN/LIN state machines; 1KB RAM is sufficient for input debounce and timer stacks. The 12 GPIO pins plus PPS let a single TSSOP-14 MCU replace multiple discrete timer ICs, and CWG/CCP peripherals drive LED backlighting and H-bridge direction signals without external logic. Compared to commercial-grade PIC16F18325-I/ST, the /VAO variant passes AEC-Q100 stress tests, eliminating qualification risk on the production line.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC16F18325-I/STVAO suits battery-powered IoT sensor nodes because its XLP Extreme Low Power technology achieves nanoamp sleep current while retaining SRAM and RTC, allowing multi-year coin-cell operation. Its 10-bit ADC reads thermistor, battery-voltage, and occupancy sensors; the integrated 32MHz internal oscillator eliminates an external crystal, reducing BOM and quiescent leakage. With 14KB Flash, designers can run Microchip's MiWi or custom 802.15.4 stacks alongside sensor-processing logic, and PPS reroutes the UART/I2C to free pins for clean PCB routing. Compared to commercial variants, the /VAO temp range supports outdoor enclosures from arctic to desert conditions.
Recommended
LED Lighting Drivers and Dimmers
The PIC16F18325-I/STVAO works well in dimmable LED lighting because its CWG (Complementary Waveform Generator) and 10-bit PWM channels produce phase-correct dimming signals with hardware dead-band, eliminating flicker at low duty cycles. The CLC (Configurable Logic Cell) implements custom dimming curves and zero-crossing detection in hardware, freeing the CPU for wireless or DMX512 protocol handling. AEC-Q100 qualification enables under-hood automotive lamp drivers and outdoor luminaire controls. The 1.8V-5.5V range lets the same TSSOP-14 design serve 3.3V battery LEDs and 5V mains-powered LED strips with the same firmware, simplifying SKUs across a lighting product family.
Recommended
Industrial Sensor Signal Conditioning
The PIC16F18325-I/STVAO handles industrial 4-20mA loop sensors and bridge-sensor conditioning because its 10-bit ADC paired with the on-chip op-amp (where present in the family) provides accurate ratiometric measurements. The TSSOP-14 footprint is footprint-compatible across the PIC16F18313/18324/18325 family, allowing inventory consolidation of one PCB layout. Extended -40C to +125C range tolerates factory-floor temperature swings, and PPS lets engineers reassign I2C and SPI on the fly to multiple sensor chains without board rework. Compared to commercial-grade variants, /VAO automotive grade withstands vibration and EMC stress per AEC-Q100 protocol.
Recommended
LIN Bus Automotive Sub-Modules
The PIC16F18325-I/STVAO is well suited to LIN sub-modules (window lifters, seat controllers, mirror adjusters) because its EUSART can be configured for LIN 1.x/2.x protocol, eliminating the dedicated LC SLA chip and saving $0.20 per node. AEC-Q100 Grade 1 qualification meets OEM automotive requirements, and the TSSOP-14 footprint fits inside small motor housings and behind door trim. PPS allows the LIN RX/TX pins to move if PCB routing requires, while the CLC handles LIN wake-up pulse detection in hardware, further offloading the CPU. Compare to PIC16F18325-I/ST: /VAO is required by most OEM automotive specifications.
Recommended
Consumer Appliance Control Boards
The PIC16F18325-I/STVAO drives consumer appliance control boards (washing machines, dishwashers, refrigerators) because its XLP nanoamp sleep modes suit Energy Star standby requirements, while the CWG and CCP peripherals drive triac phase-control outputs for motor and heater load switching. The TSSOP-14 package's 0.65mm pitch is machine-vision friendly and survives wave-solder reflow, lowering manufacturing cost. PPS reroutes the I2C keypad to free pins for the LCD segment driver. AEC-Q100 grade is overkill for indoor appliances but future-proofs the design for outdoor variants like refrigerator compressors and pool controllers exposed to wider temperature swings.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18325-I/STVAO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18325-I/ST | PIC16F18325-E/ST | PIC16F18324-I/SL | PIC16F18323-I/ST |
|---|---|---|---|---|---|
| Package | TSSOP-14 | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 14 KB | 14 KB | 14 KB | 7 KB (-50%) | 3.5 KB (-75%) |
| RAM | 1 KB | 1 KB | 1 KB | 512 B (-50%) | 256 B (-75%) |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| AEC-Q100 Qualification | Qualified (Grade 1) | Not qualified (commercial) | Not qualified (extended industrial) | Not qualified (industrial) | Not qualified (industrial) |
| Operating Temperature | -40 C to +125 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C |
| I/O Pins | 12 | 12 | 12 | 12 | 12 |
| Unit Price (qty 1) | $1.85 (as of 2026-09-20) | $1.55 (commercial grade, lower cost) | $1.70 | $1.40 (-24%) | $1.20 (-35%) |
Key Differentiators
- AEC-Q100 Grade 1 automotive qualification (vs PIC16F18325-I/ST)
- Largest Flash program memory in PIC16F1831x TSSOP-14 family (vs PIC16F18323-I/ST)
- Peripheral Pin Select on all digital I/O (vs PIC16F1823-I/ST)
Design Notes
The PIC16F18325-I/STVAO's XLP mode achieves <100 nA sleep current when properly configured; ensure the ADC is disabled, unused peripherals are clock-gated, and the ADC is in sleep mode before entering XLP. Estimate: with VDD=3.3V, the MCU draws ~30 nA in deep sleep, allowing a CR2032 (220 mAh) to provide roughly 800 years theoretical life. Never leave floating digital inputs during sleep, as they leak via the Schmitt trigger; configure all unused GPIO as outputs driven low.
Place a 100 nF ceramic decoupling capacitor within 3 mm of the VDD pin (pin 14) and a 10 uF bulk capacitor within 10 mm. The TSSOP-14 thermal pad is not present on this package; route the ground pour directly under the IC with multiple vias stitching the top-side pad to the inner plane. Keep analog-series logic running lines (ADC inputs, VREF traces) at least 3 mm from PWM switching traces to avoid coupling. Estimated: TSSOP-14 theta_JA is ~80 C/W on a 2-layer board with 1 oz copper.
Do not assume PPS is automatically configured - firmware must call PPS_unlock and PPS_set_input_table functions at startup before the peripheral will function on remapped pins. The MCLR pin requires a 10 kohm pull-up to VDD; never leave it floating. For AEC-Q100 designs, follow the Microchip AN2288 checklist and document firmware version traceability. Do not program Flash above 100000 erase cycles or EEPROM above 1000000 cycles - both will fail per the Microchip datasheet.
Compliance Information
AEC-Q100 Grade 1 qualified per Microchip ordering suffix -VAO. RoHS and REACH compliance per Microchip product page. Halogen-free per Microchip packaging specification.
