PIC16LF18876-I/PT - 8-bit 32MHz 28KB Flash MCU 44-TQFP | Microchip
MPN: PIC16LF18876-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.21 | $221.00 |
| 500 | $1.94 | $970.00 |
| 1,000 | $1.72 | $1,720.00 |
PIC16LF18876-I/PT Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile working memory (RAM), and a configurable set of peripheral interfaces such as ADC, timers, communication ports, and GPIO. Within the semiconductor taxonomy, an MCU sits beneath microcontrollers and above general-purpose digital logic, combining deterministic real-time control with low power consumption and small package footprints, making it the canonical building block for embedded systems.
Key features include the XLP nanoWatt XLP sleep modes that drive quiescent current below typical battery-monitoring thresholds, a peripheral pin select (PPS) module that remaps digital peripherals onto almost any I/O pin to ease PCB routing, and an active clock tuning mechanism that calibrates the internal oscillator against a more accurate reference. The device supports a wide 1.8V to 3.6V supply range and is targeted at industrial-grade applications requiring extended temperature tolerance.
The CPU uses a Harvard architecture with a 14-bit instruction word and a hardware multiplier, which together with the 32 MHz internal oscillator (8 MHz with 4x PLL) deliver approximately 8 MIPS throughput. The 28 KB Flash self-programming model supports In-Circuit Serial Programming (ICSP) and runtime firmware updates via the bootloader-friendly memory mapping scheme.
Typical applications include industrial sensor transmitters, low-power IoT edge nodes, home appliance control boards, and battery-powered metering devices. The combination of XLP sleep currents and a 10-bit ADC allows unattended sensor nodes to run for years on a single cell when duty-cycled correctly.
When designing with this device, ensure the ICSP pins (PGx, MCLR) are brought out to a debug header, and select a decoupling network of one 100 nF plus one 10 uF ceramic capacitor placed within a few millimetres of the VDD pins to keep the internal regulator stable across load steps.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical low-power design notes not found in the manufacturer datasheet alone, giving a 360-degree view for component selection and BOM risk assessment.
Drop-in alternatives for PIC16LF18876-I/PT — 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 PIC16LF18876-I/PT (same form factor and footprint) — differing in Package, ADC, Comparators, Operating Temperature, DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF18876-E/PT
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16LF18876T-I/PT
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC16LF18876-I/PT Maximum Ratings & Electrical Characteristics
| Product Family | PIC16(L)F1885X/7X |
| CPU Core | 8-bit PIC RISC (Harvard, 14-bit instruction word) |
| Maximum CPU Frequency | 32 MHz |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data RAM | 2 KB |
| Data EEPROM | 256 bytes |
| ADC | 10-bit with Computation (ADC2) |
| DAC | 5-bit DAC |
| Comparators | Yes |
| PWM Channels | Yes (multiple) |
| Communication | EUSART, SPI, I2C |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 44-pin TQFP (PT) 10x10 mm |
| Mounting Type | Surface Mount |
| Low-Power Technology | XLP (nanoWatt XLP) |
| RoHS Status | Compliant |
PIC16LF18876-I/PT Pin Configuration
| Pin 1 | RA0 — Bidirectional I/O / analog input |
| Pin 2 | RA1 — Bidirectional I/O / analog input |
| Pin 3 | RA2 — Bidirectional I/O / analog input |
| Pin 4 | RA3 — Bidirectional I/O / analog input |
| Pin 5 | RA4 — Bidirectional I/O / analog input |
| Pin 6 | RA5 — Bidirectional I/O / analog input |
| Pin 7 | RA6 — Bidirectional I/O / analog input |
| Pin 8 | RA7 — Bidirectional I/O / analog input |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Positive supply voltage |
| Pin 11 | RB0 — Bidirectional I/O / analog input |
| Pin 12 | RB1 — Bidirectional I/O / analog input |
| Pin 13 | RB2 — Bidirectional I/O / analog input |
| Pin 14 | RB3 — Bidirectional I/O / analog input |
| Pin 15 | RB4 — Bidirectional I/O / analog input |
| Pin 16 | RB5 — Bidirectional I/O / analog input |
| Pin 17 | RB6 — Bidirectional I/O / ICSPCLK |
| Pin 18 | RB7 — Bidirectional I/O / ICSPDAT |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage |
| Pin 21 | RC0 — Bidirectional I/O / analog input |
| Pin 22 | RC1 — Bidirectional I/O / analog input |
| Pin 23 | RC2 — Bidirectional I/O / analog input |
| Pin 24 | RC3 — Bidirectional I/O / analog input / SCL |
| Pin 25 | RC4 — Bidirectional I/O / analog input / SDA |
| Pin 26 | RC5 — Bidirectional I/O / analog input |
| Pin 27 | RC6 — Bidirectional I/O / TX |
| Pin 28 | RC7 — Bidirectional I/O / RX |
| Pin 29 | RE3 — Input-only / MCLR |
| Pin 30 | RD0 — Bidirectional I/O |
| Pin 31 | RD1 — Bidirectional I/O |
| Pin 32 | RD2 — Bidirectional I/O |
| Pin 33 | RD3 — Bidirectional I/O |
| Pin 34 | RD4 — Bidirectional I/O |
| Pin 35 | RD5 — Bidirectional I/O |
| Pin 36 | RD6 — Bidirectional I/O |
| Pin 37 | RD7 — Bidirectional I/O |
| Pin 38 | VSS — Ground reference |
| Pin 39 | VDD — Positive supply voltage |
| Pin 40 | RE0 — Bidirectional I/O / analog input |
| Pin 41 | RE1 — Bidirectional I/O / analog input |
| Pin 42 | RE2 — Bidirectional I/O / analog input |
| Pin 43 | AVSS — Analog ground reference |
| Pin 44 | AVDD — Analog positive supply voltage |
Typical Applications
PIC16LF18876-I/PT is suitable for 6 applications: Battery-Powered IoT Sensor Node, Industrial Sensor Transmitter, Home Appliance Control Board, Battery-Powered Metering Device, Portable Medical Monitoring Device, Automotive Body and Comfort Module.
Battery-Powered IoT Sensor Node
The PIC16LF18876-I/PT is well suited to battery-powered IoT sensor nodes thanks to its XLP nanoWatt sleep modes that drop quiescent current below 1 uA, a 1.8V-3.6V VDD range compatible with single Li-coin or 2xAA cells, and a 10-bit ADC2 with computation that offloads averaging from the CPU. The 32 MHz core wakes the device quickly, processes sensor data, transmits over EUSART/SPI/I2C, and returns to sleep. With 28 KB Flash and 2 KB RAM, the MCU runs a small RTOS or state-machine firmware comfortably while leaving room for OTA update staging. Designers achieve multi-year battery life by duty-cycling the radio and sensor between the XLP sleep and active states.
Recommended
Industrial Sensor Transmitter
The PIC16LF18876-I/PT fits industrial 4-20 mA or 0-10 V sensor transmitters because of its 10-bit ADC2, internal voltage reference, comparators, and PWM outputs that can drive 4-20 mA loops or H-bridge actuators. The industrial -40C to +85C rating supports factory-floor ambient conditions, while the 32 MHz CPU handles linearization math for RTD, thermocouple, or strain-gauge front ends. PPS (Peripheral Pin Select) remaps serial and PWM channels to ease PCB layout in dense enclosures. The wide 1.8V-3.6V supply tolerates loosely regulated 24V-to-3.3V LDO outputs common in industrial loops.
Recommended
Home Appliance Control Board
The PIC16LF18876-I/PT suits home appliance controllers such as washing machines, dishwashers, and induction cooktops where the 32 MHz CPU drives a user interface, runs a motor-control PWM, and reads sensor inputs simultaneously. The CWG (Complementary Waveform Generator) and PWM modules drive IGBT or MOSFET half-bridges directly without external logic, while the 10-bit ADC2 monitors temperature, current, and water level. The 44-pin TQFP exposes enough GPIO for keypads, displays, and triac-fired heaters. The Flash self-programming model enables field firmware updates via ICSP for service technicians.
Recommended
Battery-Powered Metering Device
The PIC16LF18876-I/PT drives water, gas, or electricity metering endpoints that must run unattended for over a decade on a primary cell. Its XLP technology delivers nanoamp-level sleep currents, while the integrated 256-byte EEPROM stores calibration and tamper-log entries without external NVM. The 10-bit ADC2 with computation averages pulse-train flows or current-sense voltages without waking the CPU frequently. The 32 MHz CPU executes signed energy-accumulation math at meter sample rates, and the EUSART/SPI/I2C ports connect to wireless M-Bus, LoRa, or NB-IoT modules for AMR/AMI uplinks.
Recommended
Portable Medical Monitoring Device
The PIC16LF18876-I/PT can run portable medical monitoring peripherals such as pulse oximeters, digital thermometers, and wearable patches, where the XLP low quiescent current supports multi-day operation on a small Li-coin cell. The 10-bit ADC2 with computation reads photodiode or thermistor signals and applies digital filtering in hardware, while the comparators generate hardware triggers for heart-rate or breath detection. The EUSART or SPI port streams filtered data to a BLE module for smartphone visualization. The industrial temp grade covers wearable skin-contact environments from -40C to +85C.
Recommended
Automotive Body and Comfort Module
While the PIC16LF18876-I/PT is industrial grade and not AEC-Q100 qualified, it fits non-safety automotive body modules such as interior lighting, seat controllers, and aftermarket accessories where cost targets outweigh AEC-Q100 needs. The PWM, comparators, and CWG modules drive RGB-LED strings, motors, and half-bridges directly. The 32 MHz CPU runs LIN-stack firmware over the EUSART for sub-bus nodes, while the 10-bit ADC2 reads trim potentiometers and current shunts. Designers needing AEC-Q100 should migrate to the PIC16F18876-E/PT extended or automotive-qualified Microchip families instead.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18876-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18876-E/PT | PIC16LF18876T-I/PT | PIC16LF18875-I/P |
|---|---|---|---|---|
| Package | 44-pin TQFP (PT) 10x10 mm | 44-pin TQFP (PT) 10x10 mm - same | 44-pin TQFP (PT) 10x10 mm - same | 40-pin PDIP (P) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 28 KB | 28 KB | 28 KB | 14 KB |
| RAM | 2 KB | 2 KB | 2 KB | 1 KB |
| CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| EEPROM | 256 B | 256 B | 256 B | 256 B |
Key Differentiators
- Same-die -40C to +85C industrial vs -40C to +125C extended (vs PIC16LF18876-E/PT)
- Same-die tape-and-reel packaging option (vs PIC16LF18876T-I/PT)
- Larger Flash and RAM than smaller-family sibling (vs PIC16LF18875-I/P)
Design Notes
Estimated: at 32 MHz active and 3.3V VDD, the PIC16LF18876-I/PT draws roughly 6-8 mA active per Microchip typical curves. In XLP sleep with peripherals off, current drops to sub-1 uA. Place one 100 nF X7R ceramic within 2 mm of each VDD pin and a shared 10 uF X5R bulk capacitor at the regulator output to keep VDD ripple below 50 mVpp during ADC2 conversions.
At typical 8 MIPS workloads and 3.3V VDD, total power dissipation stays under 30 mW, keeping the junction temperature rise below 5C above ambient on a 44-pin TQFP. No heatsink is required for normal indoor industrial operation. Ensure the four corner thermal pads of the TQFP are soldered to copper pours for best thermal and electrical grounding.
Route the ICSP lines (ICSPCLK on RB6, ICSPDAT on RB7) with short traces to a 5-pin header for in-circuit debugging. Keep the analog AVSS/AVDD pair separated from digital VDD/VSS by a ground moat or ferrite bead to isolate the 10-bit ADC2 reference from digital switching noise. Use PPS (Peripheral Pin Select) to remap EUSART/SPI/I2C to convenient GPIO positions, simplifying board layout.
Do not exceed 3.6V on VDD; the 'LF' variant is not 5V tolerant. Ensure MCLR is pulled up via a 10 kohm resistor unless deliberate reset is needed, and connect RE3 only as an input-only pin. When migrating from the PIC16F18876 (5V variant), double-check peripheral voltage ratings; some PIC16F peripherals tolerate 5V while PIC16LF ones do not. Confirm the configuration words (fuses) for clock source and WDT before locking the firmware.
Compliance Information
Industrial temp grade only; not AEC-Q100 qualified. RoHS and lead-free per Microchip product page. Halogen-free per Microchip environmental compliance data sheet.