PIC16F18855T-I/MV - 8-Bit MCU, 14KB Flash, 32MHz, 28-UQFN | Microchip
MPN: PIC16F18855T-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.46 | $14.60 |
| 100 | $1.21 | $121.00 |
| 500 | $1.04 | $520.00 |
| 1,000 | $0.93 | $930.00 |
| 3,300 | $0.85 | $2,805.00 |
PIC16F18855T-I/MV Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash/ROM for program, SRAM for data, EEPROM for non-volatile storage), and programmable I/O peripherals. The PIC16F18855's 8-bit RISC Harvard architecture executes most instructions in one cycle, balancing deterministic behavior with low power consumption. The 16F family sits between PIC10/12/16 baseline parts and PIC18/dsPIC enhanced parts, making it ideal for cost-sensitive yet feature-rich embedded products.
Key features include an integrated 12-bit ADC with Computation (ADC²), Digital Signal Modulator (DSM), 5-/8-bit DAC, two 10-bit PWMs, configurable logic cells (CLC), Complementary Waveform Generator (CWG), Numerically Controlled Oscillator (NCO), CRC/SCAN, Hardware Limit Timer (HLT), and Zero-Cross Detect (ZCD). The device supports up to 25 I/O pins and operates across 2.5V/3.3V/5V rails. The MV suffix indicates the 28-pin UQFN (4x4) industrial-temperature package (-40°C to +85°C).
On the architecture side, the device uses a 32 MHz internal oscillator with 4x PLL options, programmable peripherals through Peripheral Pin Select (PPS), and eXtreme Low-Power sleep modes drawing sub-µA currents. The Functional Safety (FuSa) features and CRC/SCAN hardware diagnostics target IEC 60730 Class B safety integrity requirements for home appliances, white goods, and industrial sensor nodes.
Typical applications include consumer appliance controls, battery-powered IoT sensor nodes, LED lighting controllers, e-metering subsystems, low-cost motor control loops, and human-machine interface (HMI) panels. The combination of CIPs and 14KB Flash allows sensor conditioning, motor commutation, and serial connectivity on a single chip.
When designing with this part, leverage the Peripheral Pin Select (PPS) routing to map UART/I2C/SPI functions to any digital I/O pin, which dramatically simplifies PCB layout. For low-power designs, use the eXtreme Low-Power Sleep with retention modes (sub-µA) and wake on interrupt to extend battery life in sensor-edge applications.
This page synthesizes distributor pricing, drop-in alternatives, application notes, and practical design considerations not found in a single manufacturer datasheet view.
Drop-in alternatives for PIC16F18855T-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 PIC16F18855T-I/MV (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Program Memory (Flash), Communication Peripherals.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18855-I/MV
✅ Drop-In✓ In Stock
$1.22 / Unit
View Datasheet →PIC16F18875-I/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18854-I/MV
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16F18855T-I/ML
✅ Drop-In✓ In Stock
$1.26 / Unit
View Datasheet →PIC16F18855-E/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18877-I/MV
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F18876-I/MV
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.7 / Unit
View Datasheet →PIC16F18855T-I/MV Maximum Ratings & Electrical Characteristics
| Family | PIC® XLP™ 16F |
| Core | 8-bit PIC RISC |
| Program Memory (Flash) | 14 KB (8K x 14) |
| Data Memory (SRAM) | 1 KB |
| Non-volatile Memory (EEPROM) | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 2.5V to 5.5V (supports 2.5V / 3.3V / 5V rails) |
| I/O Pins | 25 |
| Package | 28-pin UQFN (4x4 mm) with Exposed Pad |
| DAC | 5-bit and 8-bit DAC modules |
| PWM | Two 10-bit PWM modules |
| Core Independent Peripherals (CIPs) | CLC, CWG, DSM, NCO, ZCD, CRC/SCAN, HLT |
| Communication Peripherals | UART, I2C/SPI, PPS-routed |
| Functional Safety (FuSa) | Yes - IEC 60730 Class B features |
| eXtreme Low-Power (XLP) | Yes - sub-µA Sleep modes |
| Operating Temperature | -40°C to +85°C (Industrial, 'I' suffix) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16F18855T-I/MV Pin Configuration
| Pin 1 | RA2 — Bidirectional I/O / analog input / DAC output |
| Pin 2 | RA3 — Bidirectional I/O / analog input |
| Pin 3 | RA4 — Bidirectional I/O / analog input |
| Pin 4 | RA5 — Bidirectional I/O / analog input |
| Pin 5 | VDD — Positive supply voltage (2.5V-5.5V) |
| Pin 6 | VSS — Ground reference |
| Pin 7 | RA6 — Bidirectional I/O / analog input |
| Pin 8 | RA7 — Bidirectional I/O / analog input |
| Pin 9 | RB0 — Bidirectional I/O / PPS-remappable |
| Pin 10 | RB1 — Bidirectional I/O / PPS-remappable |
| Pin 11 | RB2 — Bidirectional I/O / PPS-remappable |
| Pin 12 | RB3 — Bidirectional I/O / PPS-remappable |
| Pin 13 | RB4 — Bidirectional I/O / PPS-remappable |
| Pin 14 | RB5 — Bidirectional I/O / PPS-remappable |
| Pin 15 | RB6 — Bidirectional I/O / ICSPCLK |
| Pin 16 | RB7 — Bidirectional I/O / ICSPDAT |
| Pin 17 | MCLR — Master Clear (reset, active low) |
| Pin 18 | OSC1/RA0 — Crystal input or digital I/O |
| Pin 19 | OSC2/RA1 — Crystal output or digital I/O |
| Pin 20 | RC0 — Bidirectional I/O / PPS-remappable |
| Pin 21 | RC1 — Bidirectional I/O / PPS-remappable |
| Pin 22 | RC2 — Bidirectional I/O / PPS-remappable |
| Pin 23 | RC3 — Bidirectional I/O / PPS-remappable |
| Pin 24 | RC4 — Bidirectional I/O / PPS-remappable |
| Pin 25 | RC5 — Bidirectional I/O / PPS-remappable |
| Pin 26 | RC6 — Bidirectional I/O / PPS-remappable |
| Pin 27 | RC7 — Bidirectional I/O / PPS-remappable |
| Pin 28 | EP — Exposed pad (must be soldered to ground for thermal/electrical performance) |
Typical Applications
PIC16F18855T-I/MV is suitable for 7 applications: Home Appliance Control (IEC 60730 Class B), Battery-Powered IoT Sensor Nodes, LED Lighting Controllers, Low-Cost BLDC / PMSM Motor Control, Smart Energy Meters / Sub-Metering, Industrial Sensor / 4-20 mA Transmitter, Automotive Body and HMI Modules.
Home Appliance Control (IEC 60730 Class B)
The PIC16F18855T-I/MV is a natural fit for home appliances requiring IEC 60730 Class B safety integrity - washing machines, dishwashers, ovens, and refrigerators. The integrated Functional Safety (FuSa) features - including CRC/SCAN memory diagnostics, Hardware Limit Timer (HLT), windowed watchdog, and clock-failure detection - reduce external safety component count and simplify agency certification. The 12-bit ADC² with computation offloads sensor conditioning in real time, while eXtreme Low-Power Sleep modes let the MCU wake only when necessary, dropping standby to sub-µA. The 25 I/O pins drive relays, triacs, and user-interface buttons directly.
Recommended
Battery-Powered IoT Sensor Nodes
For IoT sensor endpoints running on coin-cell or 2xAA batteries, the PIC16F18855T-I/MV's sub-µA eXtreme Low-Power Sleep with retention and on-the-fly Peripheral Pin Select (PPS) wake-on-interrupt is ideal. The 32 MHz CPU bursts awake to process sensor reads from the 12-bit ADC², then returns to deep sleep - extending battery life to years on a 3V coin cell. With 14KB Flash and 1KB SRAM, the part handles BLE/Zigbee host emulation, LoRaWAN stack fragments, or proprietary Sub-GHz protocols via SPI/UART. The 28-UQFN (4x4 mm) package drops into space-constrained sensor PCBs.
Recommended
LED Lighting Controllers
The PIC16F18855T-I/MV drives multi-channel LED lighting with its two 10-bit PWM modules and Complementary Waveform Generator (CWG), supporting flicker-free dimming across multiple LED strings. The 12-bit ADC² reads ambient-light sensors and current-sense amplifiers for closed-loop brightness regulation, while the on-chip 5-/8-bit DACs provide smooth color-mixing for RGBW fixtures. With 14KB Flash, designers can implement DALI, 0-10V, or DMX512 control protocols alongside proprietary wireless mesh stacks. eXtreme Low-Power Sleep keeps standby power below 0.1W to meet Energy Star requirements.
Recommended
Low-Cost BLDC / PMSM Motor Control
Sensorless BLDC/PMSM motor control benefits from the PIC16F18855T-I/MV's Numerically Controlled Oscillator (NCO), CWG, and DSM peripherals which generate precise commutation waveforms and back-EMF zero-cross timing without software overhead. The 12-bit ADC² samples phase currents and bus voltage at 100+ kSps, while the CLC cell implements field-oriented control (FOC) state machines in hardware. With 32 MHz throughput and 14KB Flash, the MCU controls small appliance motors, fans, and pumps at low BOM cost. The exposed thermal pad on the 28-UQFN package handles moderate power dissipation.
Recommended
Smart Energy Meters / Sub-Metering
The PIC16F18855T-I/MV integrates well into single-phase energy meters and sub-metering modules thanks to its 12-bit ADC² for voltage/current sampling, 32 MHz CPU for real-time RMS and power-factor calculation, and 256B EEPROM for tariff and calibration storage. The Functional Safety CRC/SCAN features simplify IEC 62053-21 accuracy-class compliance. UART/I2C/SPI via PPS connects to communication modules (PLC, RF mesh, or NB-IoT) for AMI backhaul. The 28-UQFN gives a compact footprint for in-meter designs.
Recommended
Industrial Sensor / 4-20 mA Transmitter
Industrial 4-20 mA loop-powered transmitters benefit from the PIC16F18855T-I/MV's wide 2.5V-5.5V supply range, 12-bit ADC² with internal voltage reference, and sub-µA sleep current for the loop-power budget. The 25 I/O pins handle HART modem interfaces, display drivers, and pushbutton calibration. The IEC 60730 Class B FuSa features plus -40°C to +85°C industrial temperature rating make this part suited to factory-floor sensor modules. With Peripheral Pin Select, designers can route UART to any pin, simplifying PCB layout for compact DIN-rail enclosures.
Recommended
Automotive Body and HMI Modules
Beyond functional safety (FuSa), the PIC16F18855T-I/MV can be specified into non-safety automotive body modules - HVAC control panels, seat controllers, mirror modules, and ambient lighting - where its wide 2.5V-5.5V supply tolerates load-dump transients and its 32 MHz CPU drives LIN-bus stacks and small TFTs. The 14KB Flash comfortably fits LIN descriptors, button debouncing, and indicator animations. For ISO 26262 ASIL-B applications, design teams can migrate to the AEC-Q100-qualified PIC16F18855T-I/MVAO variant with identical pinout.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18855T-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18855-I/MV | PIC16F18875-I/MV | PIC16F18854-I/MV | PIC16F18855T-I/ML | PIC16F18855-E/MV |
|---|---|---|---|---|---|---|
| Package | 28-UQFN (4x4 mm) MV | 28-UQFN (4x4 mm) MV - same | 28-UQFN (4x4 mm) MV - same | 28-UQFN (4x4 mm) MV - same | 28-QFN (6x6 mm) ML - larger variant | 28-UQFN (4x4 mm) MV - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash (KB) | 14 KB | 14 KB | 28 KB | 7 KB | 14 KB | 14 KB |
| RAM (KB) | 1 KB | 1 KB | 2 KB | 1 KB | 1 KB | 1 KB |
| EEPROM (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 |
| Operating Voltage | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Extended -40C to +125C |
| Functional Safety (FuSa) | Yes (IEC 60730 Class B) | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Built-in Functional Safety (FuSa) features for IEC 60730 Class B compliance (vs PIC16F18854-I/MV)
- Compact 4x4 mm UQFN package for space-constrained sensor nodes (vs PIC16F18855T-I/ML (28-QFN 6x6))
- Sub-µA eXtreme Low-Power Sleep with full SRAM retention (vs PIC16F18875-I/MV)
Design Notes
The 28-UQFN (4x4 mm) package dissipates heat through the exposed pad (pin 28). Estimated: at 32 MHz active current ~5 mA and 3.3V supply, internal power is roughly 17 mW - well within the package's thermal envelope of ~45 C/W theta-JA when the exposed pad is soldered to a 1 square inch copper pour. Always solder the EP to the ground plane to keep junction temperature under 125 C in industrial environments.
Place a 100 nF decoupling capacitor within 3 mm of the VDD pin and a 10 µF bulk capacitor at the board's power entry. Connect the UQFN exposed pad to the ground plane using at least 6 thermal vias (0.3 mm drill, 0.6 mm pad) for proper heat sinking. Route ICSPCLK/ICSPDAT to test points even on production boards for in-circuit debug access - this avoids expensive socket rework.
Do not forget to configure the PPS registers for UART/I2C/SPI pin mapping - unlike older PIC16 parts, no peripheral pin functions are committed at reset. Always set both the input and output PPS registers (e.g., RXxPPS and RB0R) for proper operation. Also, enable the FVR (Fixed Voltage Reference) before using the ADC in 12-bit mode for stable reference; otherwise the ADC defaults to VDD with reduced accuracy.
For designs using the 12-bit ADC², route analog inputs as short as possible and keep them away from high-current switching traces or PWM signals. Use a separate analog ground pour with a single-point star connection to the main ground at the VSS pin. If the ADC must sample above 50 kSps, add an external op-amp buffer between the sensor and the ADC input to avoid ADC input-charge settling errors.
Compliance Information
RoHS and lead-free per Microchip product page. AEC-Q100 not qualified - for automotive safety applications, use the AEC-Q100 qualified variants in the family. Functional Safety (IEC 60730 Class B) features built-in.
