PIC16F18854-I/MV - 7KB Flash 8-bit MCU, 28-UQFN | Microchip
MPN: PIC16F18854-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.99 | $1.99 |
| 10 | $1.79 | $17.90 |
| 100 | $1.55 | $155.00 |
| 500 | $1.34 | $670.00 |
| 1,000 | $1.18 | $1,180.00 |
PIC16F18854-I/MV Overview
A microcontroller is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM/EEPROM), and a rich set of peripherals including timers, communication interfaces, and analog blocks. The PIC16 family sits at the low-power end of the 8-bit MCU market, using a Harvard RISC architecture optimized for deterministic interrupt response and very low sleep current, making it popular for battery-powered and always-on applications.
Key features of the PIC16F18854 include Core Independent Peripherals (CIPs) such as the CRC/SCAN, Hardware Limit Timer (HLT) and Windowed Watchdog Timer (WWDT) that offload tasks from the CPU, plus eXtreme Low Power (XLP) technology for sleep currents in the sub-microamp range. The device also integrates 22 I/O pins, 2 I2C/SPI interfaces, multiple Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) modules, and 2 10-bit ADCs with up to 24 channels for mixed-signal designs.
Technically, the part uses a 14-bit instruction word, has 7 KB self-programmable Flash, and supports in-circuit serial programming (ICSP). The 28-UQFN package provides a small 4x4 mm footprint while the exposed thermal pad lowers junction-to-ambient thermal resistance for high-temperature industrial use.
Typical applications include low-power IoT sensor nodes, industrial control modules, battery-powered home automation, HVAC fan control, and consumer white goods. The combination of CIPs and XLP makes it especially well-suited for applications that must stay asleep most of the time while still monitoring analog or digital inputs.
When designing, ensure the ICSP programming pins (RB6/ICSPDAT and RB7/ICSPCLK) are reserved on the PCB layout and not pulled hard to ground. For lowest sleep current, disable unused peripherals and configure all unused I/O as outputs low rather than inputs, per Microchip guidance.
This page synthesizes distributor pricing, drop-in package alternatives, and practical design notes that are not bundled in the manufacturer datasheet.
Drop-in alternatives for PIC16F18854-I/MV — 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 PIC16F18854-I/MV (same form factor and footprint) — differing in ADC, Operating Temperature, Package, I/O Pins, DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18854-E/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18854-I/ML
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16F18855-I/MV
✅ Drop-In✓ In Stock
$1.22 / Unit
View Datasheet →PIC16F18854-I/SO
✅ Drop-In✓ In Stock
$0.82 / Unit
View Datasheet →PIC16F18854-I/SS
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →PIC16F18446-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18854-I/MV Maximum Ratings & Electrical Characteristics
| Manufacturer | Microchip Technology |
| Series | PIC16 (L)F1885x/7x |
| Core Processor | PIC16 (8-bit RISC, 14-bit instruction word) |
| Program Memory Type | Flash |
| Program Memory Size | 7 KB |
| EEPROM | 256 B |
| SRAM | 1 KB |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage | 1.8 V to 5.5 V |
| I/O Pins | 22 |
| ADC | 10-bit, 2 modules |
| Communication Interfaces | 2x SPI, 2x I2C, 2x EUSART |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 28-UQFN (MV) 4x4 mm with exposed pad |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Peripherals | CRC/SCAN, HLT, WWDT, PWM, CWG, NCO, DSM |
PIC16F18854-I/MV Pin Configuration
| Pin 1 | RA0 — Bidirectional I/O / analog input AN0 |
| Pin 2 | RA1 — Bidirectional I/O / analog input AN1 |
| Pin 3 | RA2 — Bidirectional I/O / analog input AN2 |
| Pin 4 | RA3 — Bidirectional I/O / analog input AN3 / VREF+ |
| Pin 5 | RA4 — Bidirectional I/O / analog input AN4 |
| Pin 6 | RA5 — Bidirectional I/O / analog input AN5 |
| Pin 7 | RA6 — Bidirectional I/O / analog input AN6 |
| Pin 8 | RA7 — Bidirectional I/O / analog input AN7 |
| Pin 9 | VSS — Ground |
| Pin 10 | VDD — Positive supply voltage |
| Pin 11 | RB0 — Bidirectional I/O / analog input AN8 |
| Pin 12 | RB1 — Bidirectional I/O / analog input AN9 |
| Pin 13 | RB2 — Bidirectional I/O / analog input AN10 |
| Pin 14 | RB3 — Bidirectional I/O / analog input AN11 |
| Pin 15 | RB4 — Bidirectional I/O / analog input AN12 |
| Pin 16 | RB5 — Bidirectional I/O / analog input AN13 |
| Pin 17 | RB6 — Bidirectional I/O / ICSPCLK (programming clock) |
| Pin 18 | RB7 — Bidirectional I/O / ICSPDAT (programming data) |
| Pin 19 | RC0 — Bidirectional I/O / analog input AN16 |
| Pin 20 | RC1 — Bidirectional I/O / analog input AN17 |
| Pin 21 | RC2 — Bidirectional I/O / analog input AN18 |
| Pin 22 | RC3 — Bidirectional I/O / analog input AN19 |
| Pin 23 | RC4 — Bidirectional I/O / analog input AN20 |
| Pin 24 | RC5 — Bidirectional I/O / analog input AN21 |
| Pin 25 | RC6 — Bidirectional I/O / analog input AN22 |
| Pin 26 | RC7 — Bidirectional I/O / analog input AN23 |
| Pin 27 | VSS — Ground (return) |
| Pin 28 | VDD — Positive supply voltage (return) |
Typical Applications
PIC16F18854-I/MV is suitable for 7 applications: Battery-Powered IoT Sensor Nodes, Industrial Control Modules, Home Automation Hubs, HVAC Fan and Motor Control, Wearable Health Monitors, Consumer White Goods, Automotive Body Electronics (Sub-System).
Battery-Powered IoT Sensor Nodes
The PIC16F18854-I/MV's eXtreme Low Power (XLP) technology and nanoWatt sleep mode make it ideal for battery-powered IoT sensor nodes. With sub-50 nA typical sleep current and full RAM retention, the MCU can sleep for seconds between sensor reads while Core Independent Peripherals (CIPs) handle wake-on-event tasks without CPU intervention. The 7 KB Flash holds small sensor-fusion or LoRa-MAC stacks; the 1.8-5.5 V supply directly supports 3.3 V coin-cell or 2x AA battery rails. Designers pair it with a low-power radio like the Microchip RN2483.
Recommended
Industrial Control Modules
For industrial control modules, the PIC16F18854-I/MV delivers 32 MHz CPU performance, 22 I/O, and 2 EUSART channels to drive RS-485 Modbus nodes. The Hardware Limit Timer (HLT) and Windowed Watchdog Timer (WWDT) add safety for PLC I/O expansion, while the 10-bit ADC with 24 channels can read multiple 4-20 mA sensors. The 28-UQFN footprint fits inside compact DIN-rail modules and the exposed pad manages thermal load in sealed enclosures.
Recommended
Home Automation Hubs
In smart home automation hubs, the PIC16F18854-I/MV manages button, switch, and LED interfaces while talking to Zigbee or BLE peripherals via SPI/I2C. Its 1 KB SRAM is sufficient for protocol buffers, and the CWG (Complementary Waveform Generator) NCO and DSM peripherals synthesize dimmable LED driver signals. The wide 1.8-5.5 V supply tolerates battery backup transitions during brownouts typical of AC-powered wall switches.
Recommended
HVAC Fan and Motor Control
HVAC fan and small motor control applications benefit from the PIC16F18854-I/MV's PWM, Complementary Waveform Generator, and 10-bit ADC. The MCU can drive BLDC or brushed DC fans using feedback from current-sense amplifiers, with the HLT providing hardware safety cutoff for overcurrent events. The 7 KB Flash holds small BLDC commutation tables and the 256 B EEPROM stores user calibration constants across power cycles.
Recommended
Wearable Health Monitors
For wearable health monitors, the PIC16F18854-I/MV's XLP sleep mode and small 4x4 mm UQFN package suit compact wristbands. The 10-bit ADC reads heart-rate or SpO2 analog front ends, while the DMA-less Core Independent Peripherals offload pulse counting to keep CPU active only during real events. Operating voltage down to 1.8 V supports single Li-ion cell direct connection with proper regulation.
Recommended
Consumer White Goods
Consumer white goods like washing machines, dishwashers, and microwave ovens use the PIC16F18854-I/MV for keypad, display, and motor-control coordination. The 22 I/O drive LED segments or character LCDs directly, while the EUSART interfaces to inverter boards or main MCU subsystems. The hardware CRC/SCAN peripheral adds functional safety for sensor diagnostics required by IEC 60335 household appliance standards.
Recommended
Automotive Body Electronics (Sub-System)
In non-safety automotive body electronics such as interior lighting, seat controllers, and mirror adjusters, the PIC16F18854-I/MV (industrial grade) can be used for non-critical loads. The 32 MHz CPU and 22 I/O drive LEDs and small DC motors directly, while the LIN-capable EUSART (with external transceiver) supports LIN bus sub-nodes. For under-hood or AEC-Q100 requirements, designers should migrate to PIC16F18854-E/MV (-40C to +125C) or the Q1 automotive grade.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18854-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18854-E/MV | PIC16F18854-I/ML | PIC16F18855-I/MV | PIC16F18854-I/SO | PIC16F18854-I/SS | PIC16F18446-I/SO |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-UQFN (MV) 4x4 mm | 28-UQFN (MV) 4x4 mm - same | 28-QFN (ML) 6x6 mm | 40-UQFN - larger | 28-SOIC - different footprint | 28-SSOP - different footprint | 28-SOIC - different footprint |
| Program Memory (Flash) | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB | 14 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| EEPROM | 256 B | 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 | 32 MHz |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| I/O Pins | 22 | 22 | 22 | 36 | 22 | 22 | 22 |
| Temperature Range | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Approx. Unit Price (qty 1) | 1.99 USD | 1.99 USD | 1.99 USD | 2.20 USD | 1.95 USD | 1.95 USD | 1.85 USD |
Key Differentiators
- Core Independent Peripherals (CIPs) suite including HLT and WWDT (vs PIC16F15324-I/SL)
- nanoWatt XLP sleep current below 50 nA (vs PIC16F18446-I/SO)
- Same silicon across MV, ML, SO, SS packages (vs PIC16F18854-I/SO)
Design Notes
For lowest sleep current, configure all unused peripherals via the PMD (Peripheral Module Disable) registers before entering Sleep. Per Microchip guidance, leaving an unused peripheral enabled can add several hundred microamps to sleep current. Use the XLP deep-sleep mode (DSEN bit in VREGCON) to drop to <50 nA with full RAM retention; ensure the BOR remains enabled to wake the chip on a valid supply.
Reserve RB6 (ICSPCLK) and RB7 (ICSPDAT) for in-circuit serial programming by keeping them accessible and not pulled hard to ground; many ICSP failures come from too-strong pull-downs on these lines. Place a 100 nF decoupling capacitor as close as possible to both VDD pins (10 and 28 on the 28-UQFN), and use the exposed pad (EP) as a thermal and ground return. Add a 10 uF bulk capacitor near the IC for switching loads.
Route the 32 MHz HFINTOSC tracks short and shielded if you use the high-frequency internal oscillator at full speed; place guard ground around the OSC1/OSC2 area when an external crystal is used. Analog inputs (ANx) should be routed away from digital switching lines and bypassed with small RC filters where ADC accuracy matters. On the 4x4 mm UQFN footprint, the exposed pad must be soldered to a continuous ground plane to meet the datasheet thermal resistance.
Do not confuse the 28-UQFN MV package (4x4 mm) with the 28-QFN ML package (6x6 mm); they have different PCB land patterns. Watch the configuration word bits CONFIG1 and CONFIG2 for BOR voltage selection - leaving the default can cause spurious resets on 1.8 V-only systems. When migrating from PIC16F1847, note that the peripheral register mapping differs and the CWG/NCO modules are new, so firmware recompilation with updated headers is required.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose automotive-grade Microchip parts for under-hood applications. Halogen-free status not explicitly stated in provided data.
