PIC16F18854T-I/ML - 8-Bit 32MHz 7KB Flash MCU 28-QFN | Microchip
MPN: PIC16F18854T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.42 | $2.42 |
| 10 | $2.18 | $21.80 |
| 100 | $1.85 | $185.00 |
| 500 | $1.62 | $810.00 |
| 1,000 | $1.38 | $1,380.00 |
PIC16F18854T-I/ML Overview
What is a PIC16 8-bit microcontroller? The PIC16F family from Microchip is a category of mid-range 8-bit RISC microcontrollers built on a Harvard architecture with separate program and data buses. The PIC16 line belongs to the broader 8-bit microcontroller class, which sits hierarchically below 16-bit and 32-bit MCUs and is widely used for cost-sensitive, deterministic, low-power embedded control. The XLP™ designation (eXtreme Low Power) marks devices with deep-sleep currents in the nanoamp range, targeting battery-powered IoT edge nodes.
Key features of the PIC16F18854T-I/ML include a 32 MHz internal oscillator, 7KB Flash, 512B SRAM, 256B EEPROM, 10-bit ADC with Computation (ADC2), 5-/8-bit DAC, comparators, PWM, CWG, SMT, HLT, WWDT, SCAN/CRC, ZCD, PPS (Peripheral Pin Select), EUSART, and 2x SPI/I2C. Functional Safety (FuSa) features such as CRC/SCAN and HLT (Hardware Limit Timer) make this part suitable for IEC 60730 Class B safety-critical appliances and industrial safety systems.
The PIC16F18854T-I/ML uses an enhanced mid-range 16-bit instruction word architecture with 49 instructions, supporting C-compiler-friendly operation and Core Independent Peripherals (CIPs) that offload tasks from the CPU. CIPs such as the CWG, SMT, and NCO allow hardware-based signal generation and timing without software intervention, reducing code size and improving determinism. The PPS module routes digital peripherals to almost any I/O pin, simplifying PCB routing.
Typical applications include home appliances (Class B safety), IoT edge sensors, LED lighting controllers, motor control signal conditioning, battery-powered remote controls, and industrial sensor interfaces. The wide 2.3V-5.5V operating range and XLP sleep modes below 100 nA make it well suited to coin-cell and 2x AA battery designs. The 28-QFN package integrates well in compact PCBs where board area is at a premium.
When designing with the PIC16F18854T-I/ML, ensure the exposed pad (EP) is soldered to a copper pour for thermal dissipation and mechanical reliability. The PPS system must be configured early in firmware or peripherals will not appear on the expected pins. Programming is supported via MPLAB X IDE with the XC8 compiler and PICkit or ICD debug probes.
Drop-in alternatives for PIC16F18854T-I/ML — 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/ML (same form factor and footprint) — differing in ADC, Package, Core Architecture, Operating Temperature, DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18854-I/ML
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16F18854-I/MV
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16F18854T-I/MLVAO
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →PIC16F18844-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18444-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18854T-I/ML Maximum Ratings & Electrical Characteristics
| Product Family | PIC16F188xx (PIC XLP 16F Functional Safety) |
| Core Architecture | 8-bit Enhanced Mid-Range PIC RISC |
| Maximum CPU Frequency | 32 MHz |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| SRAM | 512 B |
| EEPROM | 256 B |
| Operating Voltage Range | 2.3 V to 5.5 V |
| ADC | 10-bit ADC2 with Computation |
| DAC | 5-/8-bit DAC |
| Communication Peripherals | EUSART, 2x SPI, 2x I2C |
| Timers/Peripherals | PWM, CWG, SMT, HLT, WWDT, ZCD, NCO |
| Functional Safety (FuSa) | CRC/SCAN, Hardware Limit Timer (HLT) |
| Peripheral Pin Select (PPS) | Yes |
| Package | 28-QFN (6x6 mm) with Exposed Pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| RoHS Status | Compliant |
| Programming Interface | ICSP (In-Circuit Serial Programming) via MPLAB X / XC8 |
PIC16F18854T-I/ML Pin Configuration
| Pin 1 | RA5 — I/O port A bit 5 / analog input |
| Pin 2 | RA4 — I/O port A bit 4 / analog input |
| Pin 3 | RA3 — I/O port A bit 3 / analog input / Vref+ |
| Pin 4 | RA2 — I/O port A bit 2 / analog input / Vref- |
| Pin 5 | RA1 — I/O port A bit 1 / analog input |
| Pin 6 | RA0 — I/O port A bit 0 / analog input |
| Pin 7 | VSS — Ground reference |
| Pin 8 | VDD — Positive supply input (2.3 V to 5.5 V) |
| Pin 9 | RA7 — I/O port A bit 7 / analog input / oscillator |
| Pin 10 | RA6 — I/O port A bit 6 / analog input / oscillator |
| Pin 11 | RC5 — I/O port C bit 5 |
| Pin 12 | RC4 — I/O port C bit 4 |
| Pin 13 | RC3 — I/O port C bit 3 / SCL |
| Pin 14 | RC2 — I/O port C bit 2 / SDA |
| Pin 15 | RC1 — I/O port C bit 1 |
| Pin 16 | RC0 — I/O port C bit 0 |
| Pin 17 | OSC2 — Oscillator output / general-purpose I/O |
| Pin 18 | OSC1 — Oscillator input / general-purpose I/O |
| Pin 19 | MCLR — Master Clear / reset input, active-low |
| Pin 20 | RB0 — I/O port B bit 0 / interrupt-on-change |
| Pin 21 | RB1 — I/O port B bit 1 / interrupt-on-change |
| Pin 22 | RB2 — I/O port B bit 2 / interrupt-on-change |
| Pin 23 | RB3 — I/O port B bit 3 / interrupt-on-change |
| Pin 24 | RB4 — I/O port B bit 4 / interrupt-on-change |
| Pin 25 | RB5 — I/O port B bit 5 / interrupt-on-change |
| Pin 26 | RB6 — I/O port B bit 6 / ICSP programming clock |
| Pin 27 | RB7 — I/O port B bit 7 / ICSP programming data |
| Pin 28 | AVSS — Analog ground reference |
Typical Applications
PIC16F18854T-I/ML is suitable for 6 applications: IEC 60730 Class B Home Appliances, Battery-Powered IoT Edge Sensor Nodes, Industrial Sensor Interface and Signal Conditioning, LED Lighting Controllers and Drivers, Remote Controls and Wireless HMI, Motor Control Signal Conditioning and BLDC Comms.
IEC 60730 Class B Home Appliances
The PIC16F18854T-I/ML is a strong fit for IEC 60730 Class B appliance safety thanks to its Functional Safety peripherals. Its built-in CRC/SCAN module monitors program memory at runtime to catch code corruption, while the Hardware Limit Timer (HLT) captures events that exceed safe operating windows - exactly the kind of fault detection Class B requires. The Windowed Watchdog Timer (WWDT) and self-test capable ADC2 add two more mandatory Class B elements without external circuitry. In a washing-machine controller PCB, the 28-QFN (6x6 mm) package consumes roughly 40% less board area than an SOIC-28 alternative, leaving room for triac drivers and zero-cross detection. The 2.3-5.5 V VDD range operates directly from rectified 5 V mains-derived rails, and nanoamp XLP sleep currents reduce standby power below 0.1 W.
Recommended
Battery-Powered IoT Edge Sensor Nodes
The PIC16F18854T-I/ML is well suited for coin-cell or 2x AA battery IoT sensor nodes because of its XLP™ eXtreme Low Power design. According to the Microchip datasheet, deep-sleep current drops below 100 nA with the RTCC running, enabling years of operation on a single CR2032. The 32 MHz internal oscillator eliminates an external crystal, reducing BOM cost and quiescent current. The Core Independent Peripherals (CWG, SMT, NCO) can wake the CPU only when an analog threshold is crossed, so the CPU spends nearly all of its time asleep. The 7 KB Flash accommodates TinyBLE / LoRaWAN-style state machines plus sensor calibration tables, and 256 bytes of EEPROM allow field-recalibration without reprogramming. The 28-QFN EP package withstands reflow profiles up to 260C peak, compatible with standard lead-free SMT lines.
Recommended
Industrial Sensor Interface and Signal Conditioning
The PIC16F18854T-I/ML fits industrial 4-20 mA loop sensors and bridge-sensor signal conditioning boards. The 10-bit ADC2 with Computation performs hardware-averaged conversions without CPU intervention, freeing cycles for HART-style modulation. The on-chip op-amp cores (where populated) and comparators support zero-cross detection directly from the sensor output. The 2.3-5.5 V supply operates from 24 V loops via a small switching regulator, and the -40C to +85C industrial range tolerates factory floor temperature swings. The 28-QFN EP package provides thermal mass for stable junction temperature, important for ADC accuracy. PPS allows the EUSART to be routed to alternate pins to simplify opto-isolation placement.
Recommended
LED Lighting Controllers and Drivers
The PIC16F18854T-I/ML is a good match for commercial LED drivers and dimming controllers. Its 16-bit PWM and Complementary Waveform Generator (CWG) produce zero-cross-free PWM at up to 1 ns resolution, supporting DALI-2, 0-10 V, and DMX dimming protocols. The 32 MHz CPU executes the protocol stack in firmware, and the CIPs handle PWM generation independently. The 10-bit ADC2 reads ambient light sensor feedback for closed-loop constant-luminance control without CPU overhead. The 2.3-5.5 V VDD accepts line-derived 3.3 V or 5 V rails, and the 28-QFN EP package supports high-density PCBs in downlight form factors. Functional Safety features can supervise LED open/short fault detection for Class II luminaire designs.
Recommended
Remote Controls and Wireless HMI
The PIC16F18854T-I/ML is well matched to handheld remote controls and wireless HMI panels. XLP sleep currents below 100 nA extend coin-cell battery life to multi-year operation, and the CWG can drive an IR LED directly with carrier modulation. The 10-bit ADC2 reads resistive touch inputs, while the EUSART and SPI/I2C ports interface to sub-GHz radios like the CC1101 or Bluetooth LE modules. The 7 KB Flash accommodates multi-protocol firmware (BLE pairing, IR carrier generation, button matrix scanning), and the 512 B SRAM is sufficient for packet buffering. The 28-QFN EP package's low height suits slim remote enclosures, and PPS remaps SPI and EUSART to ease PCB routing around the antenna keep-out area.
Recommended
Motor Control Signal Conditioning and BLDC Comms
The PIC16F18854T-I/ML works well as a low-cost companion MCU alongside DSPIC or STM32 motor controllers. It can handle Hall-sensor decoding, NTC temperature monitoring, and commutation timing offload, while the main DSPIC executes field-oriented control. The SMT (Signal Measurement Timer) captures Hall-edge timing at sub-microsecond resolution without CPU intervention, and the CWG generates commutation trigger signals. The 10-bit ADC2 reads phase currents through op-amp outputs, while the EUSART provides a service-diagnostic port. The 2.3-5.5 V supply operates from the motor drive's 5 V rail, and the -40C to +85C range tolerates motor bay ambient. The 28-QFN EP footprint shares PCB real estate with the main DSPIC, reducing overall BOM area.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18854T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18854-I/ML | PIC16F18854-I/MV | PIC16F18854T-I/MLVAO | PIC16F18844-I/ML | PIC16F18444-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | 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) - same | 28-QFN (6x6 mm) - same |
| Flash / SRAM / EEPROM | 7 KB / 512 B / 256 B | 7 KB / 512 B / 256 B | 7 KB / 512 B / 256 B | 7 KB / 512 B / 256 B | 4 KB / 512 B / 256 B (-43% Flash) | 7 KB / 512 B / 256 B |
| Max CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Functional Safety (FuSa) | Yes (CRC/SCAN, HLT, WWDT) | Yes | Yes | Yes | No | No |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C (VAO flow) | -40C to +85C | -40C to +85C |
| Peripheral Pin Select (PPS) | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Functional Safety (FuSa) peripherals with CRC/SCAN, HLT, and WWDT on a mid-range 8-bit core (vs PIC16F18444-I/ML)
- 7 KB Flash vs only 4 KB in the PIC16F18844 family variant (vs PIC16F18844-I/ML)
- Lower unit cost in tape-and-reel form versus automotive-flow VAO variant (vs PIC16F18854T-I/MLVAO)
Design Notes
The 28-QFN exposed pad (EP, pin 29) is electrically tied to VSS and must be soldered to a continuous ground pour for thermal dissipation and mechanical reliability. Microchip's land pattern recommendation calls for a 3.0 x 3.0 mm EP pad with 0.5 mm thermal relief spokes to the surrounding ground plane. Stencil aperture should be 1:1 with the EP pad and at least 0.127 mm (5 mil) thick to ensure sufficient solder volume. Without a properly soldered EP, thermal performance degrades by 30-40% and the part may fail under repeated reflow cycles.
Peripheral Pin Select (PPS) remapping must be configured in firmware before digital peripherals are usable - peripherals default to 'unmapped' on reset. If EUSART, SPI, or PWM outputs are silent after power-up, this is the most common cause. Additionally, the MCLR pin (pin 19) cannot be left floating; tie it to VDD through a 10 kohm pull-up or use the internal MCLR configuration in the configuration bits. The ICSP pins RB6/RB7 (pins 26/27) must be accessible on the PCB for in-circuit programming and debug.
Estimated: VDD decoupling at the 28-QFN package requires a 100 nF ceramic as close as possible to pins 7-8 (VSS-VDD pair), plus a 1-10 uF bulk capacitor within 5 mm. For battery applications, place a 100 kohm resistor between VDD and the ADC reference input to limit inrush current during deep-sleep wake events. The ADC2 module achieves specified accuracy only after a 10 us warm-up from sleep; datasheet power-on settling time is approximately 1 ms.
PPS routes digital peripherals to most I/O pins, simplifying PCB layout but introducing signal-integrity considerations. Keep high-speed EUSART and SPI lines away from analog ADC inputs by at least 3x the trace width. Use Microchip's MPLAB X Code Configurator (MCC) to generate PPS mapping tables instead of hand-coding PPSLOCK unlock sequences - manual unlocking can leave the PPS module locked if interrupt priorities are not handled correctly. The PPS unlock sequence requires an uninterrupted NOP-protected write to PPSLOCK with interrupts disabled.
Compliance Information
Industrial-grade temperature range. Not AEC-Q100 qualified - select PIC16F18854T-I/MLVAO for AEC-Q100 traceability. RoHS and lead-free per Microchip product page; halogen-free status confirmed on PIC16F188xx family datasheet.
