PIC16F18876-E/PT - 28KB Flash 8-bit XLP MCU | Microchip
MPN: PIC16F18876-E/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
| 2,500 | $1.64 | $4,100.00 |
PIC16F18876-E/PT Overview
An 8-bit microcontroller (MCU) is a microprocessor integrated with program memory (Flash), data memory (RAM), non-volatile storage (EEPROM), and peripherals on a single silicon die. PIC16F1xxx parts are mid-range 8-bit MCUs from Microchip, sitting between baseline PIC10/12 and enhanced PIC18 families, and they are widely used for embedded control where deterministic behavior and low power matter. The XLP sub-family specifically targets battery-powered and energy-harvesting applications, while Functional Safety (FuSa) variants are designed for IEC 61508 / ISO 26262-capable systems. In the broader taxonomy, the PIC16F18876 sits within: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC.
Key differentiating features of the PIC16F18876 include 28 KB self-programmable Flash with device ID area, 16-level hardware stack, and the ADCC computation engine that automates averaging, filtering, oversampling and threshold comparisons - reducing CPU overhead for sensor acquisition. Hardware limit timer (HLT) and Complementary Waveform Generator (CWG) provide advanced motor-control and power-conversion support without software intervention. The 256-byte EEPROM supports endurance of 100k write cycles typical, and the device offers memory partitioning for bootloader operation.
Typical applications include industrial sensor transmitters, low-power IoT edge nodes, automotive body and lighting controllers (Functional Safety use cases), home appliance user-interface boards, and battery-powered measurement instruments. The wide 2.3V-5.5V supply range and XLP sleep current down to nanoamp levels make it well suited to multi-year battery life products. The 44-TQFP package offers ample I/O for human-machine-interface (HMI) panels and multi-signal acquisition designs.
When designing with this part, reserve adequate decoupling (100 nF + 1 uF) near each VDD pin, and follow Microchip AN1881 layout guidelines for ADCC analog performance. The MCLR pin should be pulled high through a 10 kohm resistor unless a programming/debug header is required. For power-critical designs, use the XLP sleep modes rather than polling loops to maximize battery life. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F18876-E/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 PIC16F18876-E/PT (same form factor and footprint) — differing in ADC, Package, Core Architecture, Family, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18875-E/PT
✅ Drop-In✓ In Stock
$1.42 / Unit
View Datasheet →PIC16F18877-E/PT
✅ Drop-In✓ In Stock
$1.08 / Unit
View Datasheet →PIC16F18876-I/PT
✅ Drop-In✓ In Stock
$1.48 / Unit
View Datasheet →PIC16F18856-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16F18857-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16F18876-E/P
✅ Drop-In✓ In Stock
$2.04 / Unit
View Datasheet →PIC16F18876-E/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 (8-bit enhanced mid-range) |
| Family | PIC16F1885X / 7X (XLP, Functional Safety) |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data RAM | 2 KB |
| Data EEPROM | 256 bytes |
| CPU Speed (max) | 32 MHz |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| Operating Temperature (E suffix) | -40 C to +125 C |
| I/O Pins | Up to 36 |
| Package | 44-pin TQFP (10x10 mm), -PT suffix |
| ADC | 12-bit ADCC with computation, up to 43 channels |
| Communication Interfaces | UART (LIN-capable), SPI, I2C (SMBus-compatible) |
| Core-Independent Peripherals | CWG, SMT, HLT, CRC/SCAN, PWM |
| RoHS Status | Compliant |
| Mounting Type | Surface Mount |
PIC16F18876-E/PT Pin Configuration
| Pin 1 | RA5 — Port A bit 5 / analog input |
| Pin 2 | RA4 — Port A bit 4 / analog input |
| Pin 3 | RA3 — Port A bit 3 / analog input / Vref+ |
| Pin 4 | RA2 — Port A bit 2 / analog input / Vref- |
| Pin 5 | RA1 — Port A bit 1 / analog input |
| Pin 6 | RA0 — Port A bit 0 / analog input |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — Port A bit 7 / analog input |
| Pin 9 | RA6 — Port A bit 6 / analog input |
| Pin 10 | RC0 — Port C bit 0 |
| Pin 11 | RC1 — Port C bit 1 |
| Pin 12 | RC2 — Port C bit 2 |
| Pin 13 | RC3 — Port C bit 3 / SCL |
| Pin 14 | RC4 — Port C bit 4 / SDA |
| Pin 15 | RC5 — Port C bit 5 |
| Pin 16 | RC6 — Port C bit 6 / TX |
| Pin 17 | RC7 — Port C bit 7 / RX |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VDD — Positive supply voltage |
| Pin 20 | RB0 — Port B bit 0 / AN12 |
| Pin 21 | RB1 — Port B bit 1 / AN10 |
| Pin 22 | RB2 — Port B bit 2 / AN8 |
| Pin 23 | RB3 — Port B bit 3 / AN9 |
| Pin 24 | RB4 — Port B bit 4 / AN11 |
| Pin 25 | RB5 — Port B bit 5 / AN13 |
| Pin 26 | RB6 — Port B bit 6 / ICSPCLK |
| Pin 27 | RB7 — Port B bit 7 / ICSPDAT |
| Pin 28 | RD0 — Port D bit 0 |
| Pin 29 | RD1 — Port D bit 1 |
| Pin 30 | RD2 — Port D bit 2 |
| Pin 31 | RD3 — Port D bit 3 |
| Pin 32 | RD4 — Port D bit 4 |
| Pin 33 | RD5 — Port D bit 5 |
| Pin 34 | RD6 — Port D bit 6 |
| Pin 35 | RD7 — Port D bit 7 |
| Pin 36 | RE0 — Port E bit 0 |
| Pin 37 | RE1 — Port E bit 1 |
| Pin 38 | RE2 — Port E bit 2 |
| Pin 39 | RE3 — Port E bit 3 / MCLR |
| Pin 40 | VSS — Ground reference |
| Pin 41 | RF0 — Port F bit 0 |
| Pin 42 | RF1 — Port F bit 1 |
| Pin 43 | RF2 — Port F bit 2 |
| Pin 44 | VDD — Positive supply voltage |
Typical Applications
PIC16F18876-E/PT is suitable for 6 applications: Industrial Sensor Transmitter, Battery-Powered IoT Edge Node, Automotive Body and Lighting Controller, Home Appliance User Interface Board, Low-Power Measurement Instrument, Functional Safety Subsystem Controller.
Industrial Sensor Transmitter
The PIC16F18876-E/PT is an excellent fit for industrial 4-20 mA loop-powered sensor transmitters, where its 12-bit ADCC with computation and 43 analog input channels handle ratiometric bridge or thermocouple conditioning directly. The XLP sleep mode drops current to nanoamp levels between measurements, extending battery life on wireless HART nodes to multi-year spans. The 28 KB Flash accommodates protocol stacks (HART, IO-Link, Modbus RTU) plus calibration tables, while the 256-byte EEPROM stores sensor trim data across -40C to +125C. Placement is straightforward: ADCC inputs to bridge sensors, UART to the loop transceiver, and the hardware limit timer (HLT) guarding the loop-current threshold.
Recommended
Battery-Powered IoT Edge Node
For battery-powered IoT edge devices, the PIC16F18876-E/PT combines XLP sleep currents in the nanoamp range with a 2.3V-5.5V supply window that accepts single-cell Li-Ion or 2x AA chemistries without boost converters. The 32 MHz CPU executes sensor-fusion algorithms in tens of milliseconds before returning to sleep, and the SMT (Signal Measurement Timer) captures pulse-based sensor outputs without waking the CPU. With 28 KB Flash, designers can embed MQTT-SN or LoRaWAN application layers. The 44-TQFP package exposes enough I/O for multi-sensor boards (temperature, humidity, motion) plus a low-power radio interface via SPI.
Recommended
Automotive Body and Lighting Controller
The PIC16F18876-E/PT is qualified for automotive body-electronics use cases including interior lighting, mirror control, seat-position memories, and HVAC dampers, thanks to its extended -40C to +125C temperature grade and LIN-capable UART. The CWG (Complementary Waveform Generator) drives MOSFET half-bridges for LED dimming and DC motor control with hardware dead-band, eliminating CPU jitter. The Functional Safety documentation (FMEDA, safety manual) supports IEC 61508 / ISO 26262 workflows for ASIL-classified subsystems. The 256-byte EEPROM retains user settings through key-cycle and battery-disconnect events, while 36 I/O accommodates multi-channel lamp or motor drivers.
Recommended
Home Appliance User Interface Board
In washing machines, dishwashers, ovens and microwave user-interface boards, the PIC16F18876-E/PT drives segmented LCD or LED displays, capacitive touch keys, and rotary encoder inputs from a single device. The CWG and PWM channels can simultaneously backlight an LCD, fade an LED bar and buzz a piezo sounder without CPU intervention. With 36 I/O, designers can connect 7-segment displays, key matrices and indicator LEDs without external I/O expanders. IEC 60730 Class B safety features (windowed WWDT, hardware CRC/SCAN, ADCC limit check) simplify household-appliance compliance certification across the 2.3V-5.5V supply range.
Recommended
Low-Power Measurement Instrument
Handheld multimeters, insulation testers and portable environmental monitors benefit from the PIC16F18876-E/PT's combination of 12-bit ADCC, XLP sleep modes and 32 MHz burst compute for measurement algorithms. The ADCC computation modes perform hardware averaging and threshold checks, freeing the CPU to focus on display updates and serial protocol framing. The 28 KB Flash holds lookup tables for sensor linearization (RTD, thermistor), and 2 KB RAM buffers instantaneous readings for min/max/avg processing. With -40C to +125C operation, the device functions across outdoor and industrial test environments on coin-cell or Li-Ion power.
Recommended
Functional Safety Subsystem Controller
For safety-critical subsystems (industrial motor drives, burner controls, appliance Class B), the PIC16F18876-E/PT provides a FuSa-capable supervisory MCU that monitors a primary controller via UART/SPI and asserts safe-state outputs on fault. Hardware CRC/SCAN performs non-intrusive background memory verification, while the windowed watchdog timer (WWDT) detects clock drift or stalled firmware. The 256-byte EEPROM retains fault logs for post-event diagnostics. The 2.3V-5.5V supply, 32 MHz speed and 28 KB Flash suit mid-complexity safety functions where a certified C2000 or Cortex-M would be overkill.
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Recommended Products Summary
Engineering reference data for PIC16F18876-E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18875-E/PT | PIC16F18877-E/PT | PIC16F18876-I/PT | PIC16F18856-E/PT | PIC16F18857-E/PT | PIC16F18876-E/P |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) | 40-TQFP | 40-TQFP | 40-pin PDIP (DIP-40) |
| Flash Memory | 28 KB (16K x 14) | 14 KB | 56 KB | 28 KB | 28 KB | 56 KB | 28 KB |
| RAM | 2 KB | 1 KB | 4 KB | 2 KB | 2 KB | 4 KB | 2 KB |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| CPU Speed (max) | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) |
| Functional Safety (FuSa) | Yes (IEC 61508 / IEC 60730) | Yes (IEC 61508 / IEC 60730) | Yes (IEC 61508 / IEC 60730) | Yes (IEC 61508 / IEC 60730) | Yes (IEC 61508 / IEC 60730) | Yes (IEC 61508 / IEC 60730) | Yes (IEC 61508 / IEC 60730) |
Key Differentiators
- Pin-compatible memory scaling on same 44-TQFP/PT footprint (vs PIC16F18875-E/PT)
- Extended -40C to +125C temperature grade for harsh environments (vs PIC16F18876-I/PT)
- Functional Safety (FuSa) documentation for IEC 61508/60730 (vs PIC16F18876-E/P (DIP-40))
Design Notes
Decouple each VDD pin with a 100 nF ceramic capacitor placed within 3 mm of the pin, plus a single 1 uF to 10 uF bulk capacitor on the board. For battery-powered designs using XLP sleep modes, place the 100 nF caps on both VDD pins (TQFP-44 has two VDD pins at 19 and 44) to ensure clean wake-up transitions. Do not place inductive traces (PWM, switching nodes) under the MCU package to avoid injecting switching noise into the analog references.
Follow Microchip's AN1881 PCB layout guidelines for the TQFP-44 footprint: use a 0.8 mm pitch land pattern with 0.4 mm-wide pads and a center thermal pad not required for this package. Route the ICSPDAT and ICSPCLK lines (RB6/RB7) away from high-current traces to prevent programming glitches. Provide a ground plane on layer 2 with vias stitching around the perimeter at 5 mm spacing for EMI suppression.
The MCLR pin (RE3) must NOT be left floating - tie it to VDD through a 10 kohm pull-up resistor, or use the internal MCLR configuration only if external reset is not required. For in-circuit programming, populate an ICSP header with all five signals (VDD, VSS, ICSPDAT, ICSPCLK, MCLR). When migrating from PIC16F18876 to PIC16F18877, verify linker scripts accommodate 56 KB Flash; otherwise undefined symbol errors will surface at link time. Configuration bits must be explicitly set; do not rely on defaults.
For ADCC accuracy, dedicate an analog ground (AGND) island tied to digital ground at a single point near the MCU VSS pin. Bypass AVREF+/AVREF- with 100 nF ceramic capacitors when using external voltage references. Sample times must be configured per source impedance - 1 us minimum for 10 kohm sources, longer for higher-impedance sensors like thermistors. Avoid routing digital signals (PWM, UART) adjacent to analog inputs to prevent digital-coupling noise from contaminating ADC readings.
Compliance Information
RoHS compliant per Microchip product page; not AEC-Q100 qualified (functional safety FuSa documentation supports IEC 61508 / IEC 60730 Class B but not automotive AEC-Q100).
