PIC16F18854-E/ML - 8-Bit XLP MCU 32MHz 7KB Flash | Microchip
MPN: PIC16F18854-E/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.46 | $14.60 |
| 100 | $1.22 | $122.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.89 | $890.00 |
PIC16F18854-E/ML Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and configurable peripherals used to sense, decide, and actuate in embedded systems. The PIC16F18854 belongs to the mid-range 8-bit PIC family (PIC16 -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor), bridging legacy 8-bit PIC architectures and modern Core Independent Peripherals. Unlike a discrete logic design, an MCU consolidates timing, signal conditioning, communications, and basic control loops on one die, reducing BOM cost and PCB area for general-purpose and low-power products.
Key differentiating features include the ADC2 module with hardware averaging and threshold compare, Zero-Cross Detection (ZCD) for TRIAC/MOSFET control, Hardware Limit Timer (HLT), Windowed Watchdog Timer (WWDT), CRC/SCAN for memory integrity, Peripheral Pin Select (PPS) for flexible I/O mapping, and SMT (Signal Measurement Timer) for time-of-flight and pulse-width measurement. The device also supports function safety features required for IEC 61508 SIL capable systems when used with the FuSa companion libraries.
Technically, the PIC16F18854 uses Microchip's enhanced mid-range core with a 14-bit instruction word and hardware multiplier, achieving up to 16 MIPS at 32 MHz. The XLP technology delivers typical sleep currents under 50 nA with retention, and full-dynamic run currents of approximately 100 uA/MHz, enabling years of battery life on coin cells. On-chip peripherals communicate via a peripheral bus without CPU intervention (Core Independent Peripherals), which offloads tasks such as PWM-and-ADC synchronization for motor control or LED dimming.
Typical applications include low-power IoT sensor nodes, LED lighting and color-mixing drivers, home appliances with capacitive touch, battery-powered medical wearables, industrial sensor transmitters (4-20 mA replacement), and automotive body electronics sub-modules. The wide operating voltage range (1.8V-5.5V) and -40C to +125C extended temperature support make the part equally suitable for cold-chain logistics tags and under-hood auxiliary controllers.
Designers should note that the QFN-28 exposed pad must be soldered to the ground plane for proper thermal dissipation and electrical reference, and that the PPS feature allows most digital peripherals to be mapped to a wide range of I/O pins, simplifying PCB layout when routing multiple UART/I2C/SPI channels in tight enclosures.
This page synthesizes distributor pricing, drop-in QFN-28 alternatives within the PIC16F1885x/7x family, application examples and design notes beyond what the manufacturer datasheet alone provides, giving engineers and buyers a single source for selecting and sourcing the PIC16F18854-E/ML.
Drop-in alternatives for PIC16F18854-E/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 PIC16F18854-E/ML (same form factor and footprint) — differing in Data SRAM, Operating Temperature, Package, Data EEPROM, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18855-E/ML
✅ Drop-In✓ In Stock
$0.71 / Unit
View Datasheet →PIC16F18856-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18875-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18854-I/ML
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16F15355-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18456-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18854-E/ML Maximum Ratings & Electrical Characteristics
| Device Family | PIC16F1885x / PIC16F1887x (8-bit PIC) |
| Core | Enhanced mid-range 8-bit PIC16 |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Instruction Set | 14-bit enhanced mid-range |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| DAC | 5-bit / 10-bit DAC |
| Comparators | On-chip comparators |
| PWM / CWG | PWM with Complementary Waveform Generator (CWG) |
| Communications | UART, SPI, I2C (via PPS) |
| Peripheral Pin Select (PPS) | Yes |
| Zero-Cross Detection (ZCD) | Yes |
| Windowed Watchdog Timer (WWDT) | Yes |
| CRC / SCAN | Yes (memory integrity) |
| SMT (Signal Measurement Timer) | Yes |
| eXtreme Low Power (XLP) | Yes (sleep current <50 nA typical) |
| Functional Safety (FuSa) | Yes (IEC 61508 capable with library) |
| Package | 28-pin QFN (6x6 mm) with exposed pad |
| Operating Temperature | -40C to +125C (extended, -E suffix) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16F18854-E/ML Pin Configuration
| Pin 1 | RA2 — Port A bit 2 / analog / digital I/O via PPS |
| Pin 2 | RA3 — Port A bit 3 / analog / digital I/O via PPS |
| Pin 3 | RA4 — Port A bit 4 / analog / digital I/O via PPS |
| Pin 4 | RA5 — Port A bit 5 / analog / digital I/O via PPS |
| Pin 5 | RA6 — Port A bit 6 / analog / digital I/O via PPS |
| Pin 6 | RA7 — Port A bit 7 / analog / digital I/O via PPS |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA0 — Port A bit 0 / analog / digital I/O via PPS |
| Pin 9 | RA1 — Port A bit 1 / analog / digital I/O via PPS |
| Pin 10 | RB0 — Port B bit 0 / analog / digital I/O via PPS |
| Pin 11 | RB1 — Port B bit 1 / analog / digital I/O via PPS |
| Pin 12 | RB2 — Port B bit 2 / analog / digital I/O via PPS |
| Pin 13 | RB3 — Port B bit 3 / analog / digital I/O via PPS |
| Pin 14 | RB4 — Port B bit 4 / analog / digital I/O via PPS |
| Pin 15 | RB5 — Port B bit 5 / analog / digital I/O via PPS |
| Pin 16 | RB6 — Port B bit 6 / ICSPCLK / analog / digital I/O via PPS |
| Pin 17 | RB7 — Port B bit 7 / ICSPDAT / analog / digital I/O via PPS |
| Pin 18 | VDD — Positive supply voltage (1.8V to 5.5V) |
| Pin 19 | RC0 — Port C bit 0 / analog / digital I/O via PPS |
| Pin 20 | RC1 — Port C bit 1 / analog / digital I/O via PPS |
| Pin 21 | RC2 — Port C bit 2 / analog / digital I/O via PPS |
| Pin 22 | RC3 — Port C bit 3 / analog / digital I/O via PPS |
| Pin 23 | RC4 — Port C bit 4 / analog / digital I/O via PPS |
| Pin 24 | RC5 — Port C bit 5 / analog / digital I/O via PPS |
| Pin 25 | RC6 — Port C bit 6 / analog / digital I/O via PPS |
| Pin 26 | RC7 — Port C bit 7 / analog / digital I/O via PPS |
| Pin 27 | VSS — Ground reference (secondary) |
| Pin 28 | RE3 — Port E bit 3 / MCLR#/reset |
| Pin EP | EP — Exposed thermal pad - solder to ground plane |
Typical Applications
PIC16F18854-E/ML is suitable for 7 applications: Battery-Powered IoT Sensor Node, LED Lighting Driver with Dimming, Home Appliance User Interface, Portable Medical Wearable, Industrial Sensor Transmitter (4-20 mA replacement), Automotive Body Electronics Sub-Module, Smart Home Lighting Controller.
Battery-Powered IoT Sensor Node
The PIC16F18854-E/ML is well suited to coin-cell or 2xAA battery-powered IoT sensor nodes because its XLP technology delivers typical sleep currents under 50 nA with full RAM retention, and its 10-bit ADC2 with computation allows autonomous sensor reading while the CPU remains dormant. Designers can wake on interrupt from the ADC, ZCD, or SMT timer, sample a sensor, transmit via UART, and return to sleep without invoking the CPU's heavy peripherals. The 1.8V-5.5V VDD range accepts a fresh Li-ion (4.2V) down to a depleted cell (2.0V) without level shifting. The 32 MHz HFINTOSC eliminates the need for an external crystal, reducing BOM cost and PCB area. The QFN-28 (6x6 mm) footprint fits inside the tightest sensor packages while retaining enough I/O for a UART or I2C sensor interface.
Recommended
LED Lighting Driver with Dimming
The PIC16F18854-E/ML drives LED lighting strings using its PWM peripheral paired with the Complementary Waveform Generator (CWG) to produce non-overlapping gate drives for synchronous buck or boost LED drivers. The 10-bit ADC2 can sense LED current via a sense resistor and close the loop without CPU intervention through Core Independent Peripherals. The ZCD module synchronizes PWM to the AC mains for TRIAC-dimmable retrofit bulbs, while PPS lets the designer remap PWM outputs to any pin to ease PCB routing. The XLP idle current under 50 nA supports standby power budgets below 100 mW for ENERGY STAR compliance. The -40C to +125C temperature range is suitable for enclosed luminaire environments.
Recommended
Home Appliance User Interface
The PIC16F18854-E/ML handles capacitive touch or matrix keypad input, drives a character or segment LCD, and communicates with the main appliance controller via UART or I2C, all in a single QFN-28 device. The SMT (Signal Measurement Timer) measures touch-probe decay for low-cost mTouch implementations, while the CWG drives a piezo buzzer with dead-band control for alerts. Core Independent Peripherals offload keypad scanning and PWM backlight control from the CPU, leaving MIPS for higher-level HMI state machines. The wide 1.8V-5.5V VDD range supports both 3.3V logic LCDs and 5V legacy interfaces. Industrial-grade ESD and -40C to +125C operation handle kitchen and laundry environments.
Recommended
Portable Medical Wearable
Battery-powered medical wearables benefit from the PIC16F18854-E/ML's sub-50 nA sleep current, 32 MHz execution speed for on-the-fly DSP-style filtering, and 10-bit ADC2 hardware averaging for clean photoplethysmography (PPG) or single-lead ECG front-end sampling. Its QFN-28 (6x6 mm) footprint fits wrist-worn enclosures, and the extended -40C to +125C operating range tolerates body-temperature swings during sterilization and reflow. The 7 KB Flash is sufficient for BLE radio command stacks paired with a simple sensor pipeline, while EEPROM allows non-volatile storage of calibration constants. The hardware CRC/SCAN module ensures firmware integrity in safety-conscious designs, complementing the FuSa documentation for IEC 61508 SIL-2 capable systems when used with the Microchip safety library.
Recommended
Industrial Sensor Transmitter (4-20 mA replacement)
The PIC16F18854-E/ML replaces legacy 4-20 mA analog loops with digital IO-Link or wireless sensor transmitters. Its 10-bit ADC2 with computation handles ratiometric bridge and RTD sensor conditioning, while the CWG and SMT modules supervise loop-powered startup and PWM-driven current shaping. The -40C to +125C operating range handles factory floor extremes, and the 1.8V-5.5V VDD range allows direct power from 24V industrial rails via simple buck regulation. The QFN-28 (6x6 mm) footprint fits inside standard M12 sensor heads, and the WWDT plus CRC/SCAN provide functional-safety primitives required for industrial process control. Core Independent Peripherals free the CPU for application-specific protocol stacks while maintaining deterministic response to fault conditions.
Recommended
Automotive Body Electronics Sub-Module
Inside automotive body controllers - window lifts, mirror adjusters, seat-position memory - the PIC16F18854-E/ML's AEC-Q100-style qualification on the -E automotive temperature grade and on-chip LIN support via UART make it a strong sub-MCU choice. The QFN-28 package and Core Independent Peripherals (PWM, CWG, ZCD) handle direct motor-drive timing while the CPU supervises LIN commands. The 1.8V-5.5V VDD range is compatible with 12V battery systems after a simple LDO. The 7 KB Flash and 512-byte RAM comfortably fit small LIN slave stacks, and EEPROM preserves trim values across battery disconnects. The on-chip Windowed Watchdog Timer (WWDT) and CRC/SCAN support ISO 26262 functional-safety workflows when paired with Microchip's safety libraries.
Recommended
Smart Home Lighting Controller
The PIC16F18854-E/ML anchors Zigbee- or BLE-bridged smart bulbs and downlights, where its XLP sleep current and 32 MHz CPU enable responsive wireless stacks while maintaining standby power below 0.5 W. The on-chip 10-bit DAC generates smooth logarithmic dimming curves without PWM-induced flicker, and the CWG produces complementary FET drive for high-efficiency LED power stages. PPS remaps peripheral outputs to keep PCB routing compact inside GU10 form factors. The QFN-28 footprint fits within standard bulb PCBs, while the -40C to +125C operating range tolerates enclosed fixture temperatures. The on-chip CRC/SCAN module ensures the wireless stack image integrity required for OTA updates.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18854-E/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18855-E/ML | PIC16F18856-E/ML | PIC16F18875-E/ML | PIC16F18854-I/ML | PIC16F15355-I/ML | PIC16F18456-I/ML |
|---|---|---|---|---|---|---|---|
| Package | QFN-28 (6x6 mm) with exposed pad | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum CPU Frequency | 32 MHz | 32 MHz - same | 32 MHz - same | 32 MHz - same | 32 MHz - same | 32 MHz - same | 32 MHz - same |
| Operating Temperature | -40C to +125C (extended) | -40C to +125C - same | -40C to +125C - same | -40C to +125C - same | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| Core Independent Peripherals (CLC, CWG, ZCD) | Yes | Yes - same | Yes - same | Yes - same | Yes - same | Partial / older CIP set | Yes |
Key Differentiators
- Core Independent Peripherals (CIP) reduce CPU load by 30-60% versus baseline PIC16F1 (vs PIC16F15355-I/ML)
- Extended -40C to +125C automotive-grade temperature range vs industrial grade (vs PIC16F18854-I/ML)
- ADC2 with hardware computation offloads sensor averaging from CPU (vs PIC16F18855-E/ML)
- Functional Safety (FuSa) documentation for IEC 61508 (vs PIC16F18456-I/ML)
Design Notes
The QFN-28 exposed thermal pad must be soldered to a continuous PCB ground plane to achieve the rated thermal performance (theta_JA approximately 30-40 C/W with a 1 oz copper 4-layer board) and to provide a stable reference for the on-chip analog peripherals. Vias in a 3x3 thermal-via array under the EP are recommended to conduct heat into inner ground layers. Decoupling: place a 100 nF X7R capacitor within 2 mm of the VDD pin and a bulk 1-10 uF tantalum or ceramic capacitor at the board-level supply entry. Keep the EP plane isolated from switching signal traces to avoid coupling noise into the ADC.
When configuring peripherals via Peripheral Pin Select (PPS), the device locks the PPS register against accidental writes after the unlock sequence; forgetting the unlock/lock sequence causes silent I/O failures. Designers must also note that the ADC2 input channels are multiplexed with the digital I/O pins, and configuring a pin as digital output while the ADC samples that channel injects noise. Always reset the PPS assignments to default (input/output disabled) for unused pins to minimize sleep current. The WWDT must be enabled in a separate configuration word from the standard WDT - failing to do so leaves the system with only the basic WDT and disables windowed supervision.
For XLP battery-powered designs, target sleep currents under 50 nA by disabling all unused peripherals in PMD register, configuring all unused I/O as digital outputs driven low (not high-Z), and disabling the FVR and ADC2 before entering Sleep. The device's typical run current is approximately 100 uA/MHz at 3.3V, so a workload that runs for 1 ms every second averages under 5 uA - enabling coin-cell designs of 5+ years. Estimated: assumes VDD=3.0V, 1 ms active CPU @ 32 MHz every 1 s. Verify with the XLP calculator in MPLAB X IDE.
Route the ICSP signals (ICSPCLK on RB6, ICSPDAT on RB7) with short traces to a 6-pin header for in-circuit programming and debugging; do not place series resistors on these signals, as they degrade ICSP timing margin. The MCLR#/RE3 pin (pin 28) requires a 10 kohm pull-up to VDD; if not used as a reset, it must still be pulled high for normal operation. Keep the analog signals (ADC inputs, DAC outputs, comparator inputs) short and guarded with a ground trace on both sides to minimize crosstalk from PWM or CWG outputs that share the same port pins.
Compliance Information
RoHS and REACH compliant per Microchip product page. The -E temperature grade (-40C to +125C) supports automotive-style environments but the device is not formally AEC-Q100 qualified; refer to the Functional Safety (FuSa) documentation for IEC 61508 SIL-capable usage. Halogen-free status not explicitly stated in verified web data - set to unknown per data authenticity rules.
