PIC16F18854T-I/MLVAO - 7KB Flash 32MHz 8-bit MCU | Microchip
MPN: PIC16F18854T-I/MLVAO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.21 | $22.10 |
| 100 | $1.96 | $196.00 |
| 500 | $1.74 | $870.00 |
| 1,000 | $1.52 | $1,520.00 |
PIC16F18854T-I/MLVAO Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripheral interfaces onto one die. The PIC16F18854 belongs to the PIC16 XLP family, which extends the classic PIC16 mid-range architecture with Core Independent Peripherals (CIPs) such as CWG, SMT, HLT, and WWDT, plus eXtreme Low-Power (XLP) sleep modes that drop current into the nanoampere range. Within the broader taxonomy, this part is a microcontroller -> embedded controller -> CMOS logic IC -> semiconductor.
Key features include a 10-bit ADC with up to 24 channels, a 5-bit DAC, two comparators, a Complementary Waveform Generator (CWG), Signal Measurement Timer (SMT), Hardware Limit Timer (HLT), Windowed Watchdog Timer (WWDT), CRC/Scan, and multiple PWM channels. The QFN-28 package with exposed pad supports thermal performance up to 1A of internal load and provides a compact 6x6 mm footprint suitable for space-constrained designs.
The device is implemented on a low-power CMOS process with internal voltage regulation supporting 1.8V minimum core operation from a 2.3V minimum Vdd. Communication peripherals include EUSART, I2C, and SPI, enabling connectivity to sensors, displays, and host processors. The combination of CIPs and XLP allows deterministic peripheral operation without CPU intervention, a hallmark of the PIC16F1885X/7X family.
Typical applications include automotive body electronics, IoT edge sensor nodes, battery-powered instrumentation, LED lighting controllers, and consumer appliance interfaces. The "VAO" suffix designates an automotive-grade variant screened to AEC-Q100 standards for vibration, temperature, and ESD robustness.
When designing with this MCU, ensure the exposed pad is soldered to a sufficient copper pour for thermal dissipation, and follow Microchip's AN1367 PCB layout guidelines for QFN packages to maintain solder-joint reliability. The "T" suffix indicates tape-and-reel packaging for high-volume assembly.
This page synthesizes distributor pricing, automotive-grade alternatives, and CIP-focused design notes that go beyond the manufacturer datasheet to accelerate your automotive or low-power embedded design.
Drop-in alternatives for PIC16F18854T-I/MLVAO — 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 PIC16F18854T-I/MLVAO (same form factor and footprint) — differing in Package, ADC, Core Architecture, DAC, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18854-I/ML
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16F18855-I/ML
✅ Drop-In✓ In Stock
$1.38 / Unit
View Datasheet →PIC16F18856-I/ML
✅ Drop-In✓ In Stock
$1.65 / Unit
View Datasheet →PIC16F18854T-E/MLVAO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18857-I/ML
✅ Drop-In✓ In Stock
$1.8 / Unit
View Datasheet →PIC16F18854T-I/MLVAO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| SRAM | 512 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage (Vdd) | 2.3 V to 5.5 V |
| Operating Temperature | -40C to +85C (industrial, "I" suffix) |
| ADC | 10-bit, up to 24 channels |
| DAC | 5-bit |
| Comparators | 2 |
| Package | 28-pin QFN (6x6 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 (VAO suffix) |
| Core Independent Peripherals | CWG, SMT, HLT, WWDT, CRC/SCAN |
| Communication | EUSART, I2C, SPI |
| Lead-Free / RoHS | Lead-free, RoHS compliant |
PIC16F18854T-I/MLVAO Pin Configuration
| Pin 1 | RA5 — I/O port A bit 5 / ADC channel |
| Pin 2 | RA4 — I/O port A bit 4 / ADC channel |
| Pin 3 | RA3 — I/O port A bit 3 / ADC channel |
| Pin 4 | RA2 — I/O port A bit 2 / ADC channel |
| Pin 5 | RA1 — I/O port A bit 1 / ADC channel |
| Pin 6 | RA0 — I/O port A bit 0 / ADC channel |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — I/O port A bit 7 / ADC channel |
| Pin 9 | RA6 — I/O port A bit 6 / ADC channel |
| Pin 10 | RC0 — I/O port C bit 0 |
| Pin 11 | RC1 — I/O port C bit 1 |
| Pin 12 | RC2 — I/O port C bit 2 |
| Pin 13 | MCLR — Master clear reset (active low) |
| Pin 14 | RC3 — I/O port C bit 3 |
| Pin 15 | RC4 — I/O port C bit 4 |
| Pin 16 | RC5 — I/O port C bit 5 |
| Pin 17 | RC6 — I/O port C bit 6 / TX |
| Pin 18 | RC7 — I/O port C bit 7 / RX |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage |
| Pin 21 | RB0 — I/O port B bit 0 / interrupt-on-change |
| Pin 22 | RB1 — I/O port B bit 1 / interrupt-on-change |
| Pin 23 | RB2 — I/O port B bit 2 / interrupt-on-change |
| Pin 24 | RB3 — I/O port B bit 3 / interrupt-on-change |
| Pin 25 | RB4 — I/O port B bit 4 / interrupt-on-change |
| Pin 26 | RB5 — I/O port B bit 5 / interrupt-on-change |
| Pin 27 | RB6 — I/O port B bit 6 / ICSPCLK |
| Pin 28 | RB7 — I/O port B bit 7 / ICSPDAT |
Typical Applications
PIC16F18854T-I/MLVAO is suitable for 6 applications: Automotive Body Electronics, Battery-Powered IoT Sensor Nodes, LED Lighting Controllers, Industrial Control & Automation, Consumer Appliance Interfaces, Medical Monitoring Accessories.
Automotive Body Electronics
The PIC16F18854T-I/MLVAO is AEC-Q100 qualified, making it well-suited for body-electronics modules such as door-zone controllers, seat controllers, and mirror adjusters. Its 32 MHz CPU, 10-bit ADC with 24 channels, and CWG peripheral enable precise motor control and PWM-driven LED lighting. The Core Independent Peripherals (CIPs) like SMT and WWDT handle timing and watchdog tasks without CPU load, freeing the core for CAN/LIN communication via EUSART. The 28-QFN (6x6 mm) footprint fits compact modules, and the exposed pad supports thermal dissipation under sustained automotive ambient temperatures.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC16F18854T-I/MLVAO's eXtreme Low-Power (XLP) features make it ideal for battery-operated IoT sensor endpoints. Sleep currents in the nanoampere range, combined with the 10-bit ADC's ability to wake the core on threshold compare, allow multi-year coin-cell operation for wireless sensor telemetry. The 7 KB Flash accommodates small protocol stacks like Modbus or proprietary RF link layers, while the SMT peripheral handles precise pulse-width timing for ultrasonic or optical sensors. The QFN-28 package fits inside sealed IP67 enclosures common in industrial IoT deployments.
Recommended
LED Lighting Controllers
The PIC16F18854T-I/MLVAO's Complementary Waveform Generator (CWG), multiple PWM channels, and 10-bit ADC enable sophisticated LED lighting control. The CWG generates dead-band-controlled complementary PWM outputs ideal for half-bridge LED drivers, while 16-bit PWM timers support smooth dimming curves down to 0.1% brightness. The 5-bit DAC provides analog reference for current-controlled LED strings. With AEC-Q100 qualification, the part is qualified for automotive interior and exterior lighting, including RGB ambient lighting and matrix headlight control modules.
Recommended
Industrial Control & Automation
In industrial control applications, the PIC16F18854T-I/MLVAO delivers reliable deterministic control via its CIPs and 32 MIPS throughput. The 24-channel ADC reads multiple analog sensors (temperature, pressure, flow) while CWG and PWM drive actuators. The WWDT with windowed timing meets functional-safety requirements for non-safety-critical industrial machinery. The EUSART and I2C peripherals support Modbus RTU and IO-Link sensor communication. The QFN-28 footprint supports high-density PLC I/O modules, and XLP modes reduce panel-mount power budgets.
Recommended
Consumer Appliance Interfaces
The PIC16F18854T-I/MLVAO powers user interfaces in washing machines, ovens, and HVAC thermostats. Its 10-bit ADC reads NTC temperature sensors and rotary encoder positions; PWM channels drive indicator LEDs and buzzer tones. The 512-byte SRAM handles modest UI state machines, and 7 KB Flash accommodates capacitive-touch firmware via the CVD feature of the ADC. The -40C to +85C industrial temperature range handles kitchen and laundry environments. Low sleep current supports Energy Star standby requirements for major appliances.
Recommended
Medical Monitoring Accessories
Although not FDA-cleared for life-support, the PIC16F18854T-I/MLVAO suits medical accessory devices such as fitness bands, pulse-oximeter peripherals, and pill-bottle reminders. Its low sleep current extends battery life to multiple years on a single CR2032, while the SMT peripheral accurately measures optical heart-rate sensor pulse widths. The 24-channel ADC interfaces with multiple biometric sensors simultaneously. The QFN-28 footprint (6x6 mm) fits inside small wearable enclosures. The CIPs handle sensor timing without CPU wakeup, preserving battery life.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18854T-I/MLVAO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18854-I/ML | PIC16F18855-I/ML | PIC16F18856-I/ML | PIC16F18857-I/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-QFN (6x6 mm) EP | 28-QFN (6x6 mm) EP - same | 28-QFN (6x6 mm) EP - same | 28-QFN (6x6 mm) EP - same | 28-QFN (6x6 mm) EP - same |
| Flash Program Memory | 7 KB | 7 KB | 14 KB | 14 KB | 28 KB |
| SRAM | 512 B | 512 B | 1 KB | 1 KB | 2 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Automotive Grade (AEC-Q100) | Yes (VAO suffix) | No (industrial only) | No (industrial only) | No (industrial only) | No (industrial only) |
| 10-bit ADC Channels | Up to 24 | Up to 24 | Up to 24 | Up to 24 | Up to 24 |
Key Differentiators
- AEC-Q100 automotive qualification with same footprint as industrial variant (vs PIC16F18854-I/ML)
- Drop-in upgrade path to higher Flash densities within the same QFN-28 footprint (vs PIC16F18855-I/ML / PIC16F18856-I/ML / PIC16F18857-I/ML)
- Rich Core Independent Peripheral (CIP) set for offloading CPU work (vs PIC16F1825-I/ML)
Design Notes
The QFN-28 package with exposed pad (EP) requires the EP to be soldered to a copper pad on the PCB for both electrical grounding and thermal dissipation. Per Microchip application note AN1367, design at least 100 mm^2 of 1 oz copper connected to the EP. For automotive applications where the part may operate at sustained 85C ambient, the EP copper helps keep junction temperature below 125C under typical 8 MIPS loads.
Place decoupling capacitors (100 nF ceramic + 1 uF ceramic) within 3 mm of the VDD pin (pin 20) and VSS pin (pin 19). For ADC accuracy, add a 10 uF bulk capacitor at the supply rail. The QFN-28 land pattern should follow the JEDEC MO-220 standard with 0.4 mm pitch. Use Microchip's land-pattern CAD library for the exact QFN-28 EP dimensions to avoid solder-joint opens during reflow.
Configuration Word settings are critical: enable the WDT in software (not hardware) for SWDTEN control, set the LVP bit correctly for ICSP programming, and ensure the MCLRE bit matches your reset-circuit topology. Per datasheet errata, some early silicon revisions have an ADC acquisition-time limitation; use ACQT = 4 Tad minimum. Always check the latest silicon revision identifier from Microchip's product page before finalizing firmware.
For ICSP programming via ICSPCLK (RB6) and ICSPDAT (RB7), add 10 kohm pull-down resistors on both lines to prevent spurious ICSP entry during power-on. If these pins are used for general I/O, isolate them from high-frequency switching signals (PWM > 100 kHz) with a series resistor or buffer to avoid AC noise coupling into the programming interface. The MCLR pin (pin 13) requires a 10-50 kohm pull-up to VDD per datasheet recommendations.
Compliance Information
AEC-Q100 qualified per VAO suffix. Lead-free and RoHS compliant per Microchip material declaration. Halogen-free per Microchip environmental certification. Conflict minerals compliant per Microchip's CMRT filings.
