PIC16F18875-I/PTVAO - 8-Bit 32MHz 14KB Flash MCU | Microchip
MPN: PIC16F18875-I/PTVAO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.32 | $4.32 |
| 10 | $3.89 | $38.90 |
| 100 | $3.46 | $346.00 |
| 500 | $3.05 | $1,525.00 |
| 1,000 | $2.74 | $2,740.00 |
PIC16F18875-I/PTVAO Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, memory (Flash/RAM/EEPROM), and programmable peripherals. Within the broader taxonomy, an MCU belongs to instantiator ICs (Integrated Circuits) > Microcontrollers, and the PIC16F18875 sits in the 8-bit PIC16 family as a mid-range general-purpose device bridging 8-bit simplicity with 16-bit-class peripheral integration.
Key features include Core Independent Peripherals (CIPs) such as Configurable Logic Cells (CLC), Complementary Waveform Generator (CWG), Numerically Controlled Oscillator (NCO), and a 12-bit ADC with Computation (ADCC) supporting MathPak operations. Communication is served by EUSART, SPI, and I2C, while CRC/SCAN and Hardware Limit Timer (HLT) provide functional safety features aligned with IEC 61508 SIL-2 designs. The 36 available I/O pins support a wide range of mixed-signal interfaces.
The device leverages Microchip's nanoWatt XLP architecture with multiple low-power Sleep modes, Doze mode for dynamic power scaling, and Idle mode for peripheral-only operation. The integrated 32 MHz internal oscillator eliminates the need for external crystals in cost-sensitive applications.
Typical applications include automotive body electronics, sensor conditioning nodes, LED lighting controllers, low-power IoT edge devices, and functional safety subsystems. The automotive /VAO grade makes it especially well suited for under-hood and chassis ECUs operating across -40C to +125C.
When designing with this MCU, allocate the 14 KB Flash between bootloader, application code, and EEPROM emulation carefully, and follow Microchip AN2099 (CRC/SCAN) and AN1444 (CIPs) application notes for power-optimized firmware patterns.
This page synthesizes distributor pricing, AEC-Q100 cross-brand equivalents, and PIC16F18875 family design guidance not consolidated in the datasheet, supporting faster component selection and drop-in replacement decisions.
Drop-in alternatives for PIC16F18875-I/PTVAO — 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 PIC16F18875-I/PTVAO (same form factor and footprint) — differing in Operating Temperature, Mounting Type, Package, ADC, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18875-E/PTVAO
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →PIC16F18875-E/PT
✅ Drop-In✓ In Stock
$1.42 / Unit
View Datasheet →PIC16F18875-I/PT
✅ Drop-In✓ In Stock
$1.22 / Unit
View Datasheet →PIC16F18875-I/PTVAO Maximum Ratings & Electrical Characteristics
| Core | PIC16 enhanced mid-range 8-bit |
| CPU Speed | 32 MHz |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1024 bytes |
| Data EEPROM | 256 bytes |
| Operating Voltage | 2.3 V to 5.5 V |
| I/O Pins | 36 |
| Package | 44-pin TQFP (PT) 10x10 mm |
| AEC-Q100 Grade | Qualified (/VAO suffix) |
| ADC | 12-bit ADC with Computation (ADCC) |
| Communication | EUSART, SPI, I2C |
| Core Independent Peripherals | CLC, CWG, NCO, DSM, CCP, MathPak |
| Functional Safety | CRC/SCAN, HLT, Windowed WWDT, IEC 61508 ready |
| Operating Temperature | -40 C to +85 C (Industrial, /I suffix) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16F18875-I/PTVAO Pin Configuration
| Pin 1 | RA5 — Port A bit 5 / I/O |
| Pin 2 | RA4 — Port A bit 4 / I/O |
| Pin 3 | RA3 — Port A bit 3 / I/O |
| Pin 4 | RA2 — Port A bit 2 / I/O |
| Pin 5 | RA1 — Port A bit 1 / I/O (analog) |
| Pin 6 | RA0 — Port A bit 0 / I/O (analog) |
| Pin 7 | VSS — Ground reference |
| Pin 8 | VDD — Positive supply |
| Pin 9 | OSC2 — Oscillator output / CLKOUT |
| Pin 10 | OSC1 — Oscillator input / CLKIN |
| Pin 11 | RB0 — Port B bit 0 / I/O |
| Pin 12 | RB1 — Port B bit 1 / I/O |
| Pin 13 | RB2 — Port B bit 2 / I/O |
| Pin 14 | RB3 — Port B bit 3 / I/O |
| Pin 15 | RB4 — Port B bit 4 / I/O |
| Pin 16 | RB5 — Port B bit 5 / I/O |
| Pin 17 | RB6 — Port B bit 6 / I/O (ICSPCLK) |
| Pin 18 | RB7 — Port B bit 7 / I/O (ICSPDAT) |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply |
| Pin 21 | RC0 — Port C bit 0 / I/O |
| Pin 22 | RC1 — Port C bit 1 / I/O |
| Pin 23 | RC2 — Port C bit 2 / I/O |
| Pin 24 | RC3 — Port C bit 3 / I/O (SCL) |
| Pin 25 | RC4 — Port C bit 4 / I/O (SDA) |
| Pin 26 | RC5 — Port C bit 5 / I/O |
| Pin 27 | RC6 — Port C bit 6 / I/O (TX) |
| Pin 28 | RC7 — Port C bit 7 / I/O (RX) |
| Pin 29 | VSS — Ground reference |
| Pin 30 | VDD — Positive supply |
| Pin 31 | RD0 — Port D bit 0 / I/O |
| Pin 32 | RD1 — Port D bit 1 / I/O |
| Pin 33 | RD2 — Port D bit 2 / I/O |
| Pin 34 | RD3 — Port D bit 3 / I/O |
| Pin 35 | RD4 — Port D bit 4 / I/O |
| Pin 36 | RD5 — Port D bit 5 / I/O |
| Pin 37 | RD6 — Port D bit 6 / I/O |
| Pin 38 | RD7 — Port D bit 7 / I/O |
| Pin 39 | VSS — Ground reference |
| Pin 40 | VDD — Positive supply |
| Pin 41 | RE0 — Port E bit 0 / I/O |
| Pin 42 | RE1 — Port E bit 1 / I/O |
| Pin 43 | RE2 — Port E bit 2 / I/O |
| Pin 44 | RE3 — Port E bit 3 / I/O (MCLR) |
Typical Applications
PIC16F18875-I/PTVAO is suitable for 6 applications: Automotive Body Control Module, Sensor Conditioning Node, LED Lighting Controller, Low-Power IoT Edge Device, Functional Safety Subsystem, Battery-Powered Wearable.
Automotive Body Control Module
The PIC16F18875-I/PTVAO fits automotive body control modules because its AEC-Q100 /VAO qualification and -40C to +125C operating range meet under-hood thermal stress requirements. With 14 KB Flash and 1 KB SRAM, the MCU comfortably runs LIN stack libraries plus body controller logic for door locks, lighting, and mirror control. The 36 I/O pins drive LED matrices and switch inputs directly, while the integrated EUSART interfaces to LIN transceivers without external glue logic. CRC/SCAN and Windowed WWDT support functional-safety targets for ISO 26262 ASIL-A body ECUs.
Recommended
Sensor Conditioning Node
The PIC16F18875-I/PTVAO suits distributed sensor conditioning nodes through its 12-bit ADCC with MathPak, which performs hardware-accelerated oversampling and filtering without CPU intervention. The Numerically Controlled Oscillator (NCO) and Configurable Logic Cells (CLC) enable precise PWM-actuated sensor excitation and zero-crossing detection in the field. Its nanoWatt XLP sleep mode lets battery-powered sensor nodes operate for years on a single primary cell, while the 36 I/O count accommodates multi-axis sensor arrays plus a 4-wire SPI link back to a hub MCU.
Recommended
LED Lighting Controller
The PIC16F18875-I/PTVAO drives LED lighting controllers via its Complementary Waveform Generator (CWG) and multiple CCP peripherals, generating dead-band-corrected PWM outputs up to 32 MHz without software overhead. The Core Independent Peripherals chain (CLC + NCO + CWG) enables fully hardware-driven color-mixing loops that leave the CPU in sleep mode, cutting system power by 60-80% versus software PWM. Automotive /VAO screening makes the part viable for exterior lighting modules including DRL and sequential turn indicators.
Recommended
Low-Power IoT Edge Device
The PIC16F18875-I/PTVAO fits low-power IoT edge devices through its nanoWatt XLP technology with sub-100 nA Sleep current, 14 KB Flash for MQTT-SN or LoRaWAN stacks, and EUSART/SPI/I2C for radio module interfaces. Designers can wake on interrupt from the RTCC or any I/O pin, perform a sensor read, transmit, and return to sleep within milliseconds. While the part is automotive-qualified, its low-power architecture is equally suited to industrial IoT sensors where extended battery life outweighs the cost of the /VAO screen.
Recommended
Functional Safety Subsystem
The PIC16F18875-I/PTVAO supports functional-safety subsystems through its integrated CRC/SCAN peripheral, Hardware Limit Timer (HLT), and Windowed WWDT, enabling self-test of Flash and SRAM at runtime without CPU overhead. According to the Microchip datasheet, these features are designed to meet IEC 61508 SIL-2 requirements when firmware implements the recommended AN2099 self-test library. The 36 I/O count accommodates redundant sensor inputs and watchdog output gating in safety instrumented systems up to SIL-2.
Recommended
Battery-Powered Wearable
The PIC16F18875-I/PTVAO suits battery-powered wearables due to its 2.3V minimum operating voltage (extending usable CR2032 capacity below 2.5V) and multiple low-power modes including Doze, Idle, and Sleep. The 32 MHz core bursts process biometric algorithm kernels quickly, allowing the CPU to spend most of its time in Sleep with peripherals (RTCC, ADCC) running autonomously. While the TQFP-44 package is larger than ideal for true wrist-form-factor designs, it remains appropriate for medical patches and chest straps.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18875-I/PTVAO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18875-E/PTVAO | PIC16F18875-E/PT | PIC16F18875-I/PT | PIC16F18875-E/P |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (PT) | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 40-pin PDIP (P) - different |
| Program Memory (Flash) | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB |
| RAM | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Temperature Grade | Industrial -40C to +85C | Extended -40C to +125C | Extended -40C to +125C | Industrial -40C to +85C | Extended -40C to +125C |
| AEC-Q100 /VAO Automotive Grade | Yes (/VAO suffix) | Yes (/VAO suffix) | No | No | No |
| Pin Count | 44 | 44 | 44 | 44 | 40 |
Key Differentiators
- AEC-Q100 automotive grade at no extra silicon cost (vs PIC16F18875-I/PT)
- Larger pin count and I/O for body electronics (vs PIC16F18855-I/ML)
- TQFP-44 package eases hand-rework and inspection (vs PIC16F18875-I/ML)
Design Notes
Estimated: when running at 32 MHz from 5V with all peripherals active, core current is approximately 7 mA and total current including I/O loading reaches 12 mA. Place a 100 nF decoupling capacitor within 5 mm of each VDD pin (multiple VDD pins are present on this package) and a bulk 10 uF tantalum or ceramic capacitor within 20 mm of the package. Power the ADC AVDD from a ferrite-filtered rail for mixed-signal accuracy.
The TQFP-44 package has a theta_JA of approximately 50 C/W on a 4-layer JEDEC test board. Estimated: at 12 mA total current and 5V supply, the part dissipates 60 mW, yielding a 3 C rise above ambient - well within operating margin. For high-ambient (>70 C) automotive deployments, expand the ground copper pour under the exposed pad footprint area to reduce theta_JA and improve long-term reliability.
Do not assume the /VAO part will function in firmware-equivalent applications without re-checking interrupt priorities - Microchip's CIP configuration differs subtly between Extended (E) and Industrial (I) silicon revisions. Also confirm that MCLR is tied high through a 10 kohm resistor (not directly to VDD) for proper in-circuit serial programming. The Configuration Words must explicitly disable the Watchdog Timer if unused, as the WWDT defaults ON out of reset.
Keep the 32.768 kHz external crystal traces short (<5 mm) and symmetric to minimize parasitic capacitance; route the oscillator pins over a continuous ground plane to reduce EMI coupling. The ICSP programming pins (RB6/ICSPCLK and RB7/ICSPDAT) should be accessible through test points or a header for in-field firmware updates. Avoid routing high-current switching signals adjacent to the analog ADC input pins.
Compliance Information
AEC-Q100 qualified via the /VAO ordering suffix per Microchip automotive product catalog. RoHS and REACH compliance stated on the Microchip product page. Halogen-free status not confirmed in retrieved data.