PIC16F18876T-I/ML - 8-Bit 32MHz 28KB Flash MCU | Microchip
MPN: PIC16F18876T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.47 | $34.70 |
| 100 | $3.08 | $308.00 |
| 500 | $2.74 | $1,370.00 |
| 1,000 | $2.43 | $2,430.00 |
PIC16F18876T-I/ML Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path. It belongs to the broader category of microcontrollers, which sit within embedded processors and the wider semiconductor hierarchy. PIC microcontrollers combine a CPU core, non-volatile Flash program memory, volatile RAM, EEPROM data storage, and a rich set of peripherals (ADC, DAC, comparators, PWM, communication ports, timers) in one package, making them self-contained computing platforms for sensor interfacing, control loops, and human-machine interface applications.
The PIC16F18876T-I/ML integrates 24-channel 10-bit ADC with automated ADC2, a 5-bit/8-bit DAC, comparators with hysteresis, PWM/SMT/HLT/SCAN/CRC peripherals, Zero-Cross Detect (ZCD), Peripheral Pin Select (PPS), EUSART, SPI, and I2C. CIP blocks operate autonomously without CPU intervention, freeing the core for application logic and reducing firmware complexity. XLP technology delivers nanoWatt sleep currents for battery-powered products.
The device is built on Microchip's enhanced mid-range 8-bit core with a 14-bit instruction word and a hardware multiplier, supporting C-compiled and assembly firmware. Its 44-pin QFN package provides 36 I/O pins and an exposed pad for thermal dissipation, making the part suitable for space-constrained industrial, IoT, sensor, and consumer designs. The Functional Safety (FuSa) support assists in IEC 61508 SIL-capable system development.
Typical applications include IoT sensor nodes, industrial sensor interfaces, battery-powered metering, LED lighting controllers, low-power remote controls, and home appliance control panels. The wide operating voltage range supports both 3.3V and 5V rails, while XLP modes allow multi-year coin-cell operation in duty-cycled sensor designs.
When designing with this MCU, allocate pins early using the Peripheral Pin Select (PPS) mapping to maximize PCB layout flexibility. Ensure the exposed pad is soldered to a sufficiently large copper pour for thermal performance and ground reference. Plan EEPROM endurance and wear-leveling in firmware if persistent data logging is required.
This page synthesizes distributor pricing, drop-in alternatives within the same 44-QFN footprint, and practical design notes drawn from Microchip's family datasheet and reference designs - context not aggregated in any single distributor listing.
Drop-in alternatives for PIC16F18876T-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 PIC16F18876T-I/ML (same form factor and footprint) — differing in Package, ADC, Core Architecture, Program Memory (Flash), Communication.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18876-I/ML
✅ Drop-In✓ In Stock
$2.15 / Unit
View Datasheet →PIC16F18875T-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18855-I/ML
✅ Drop-In✓ In Stock
$1.38 / Unit
View Datasheet →PIC16F18857-I/ML
✅ Drop-In✓ In Stock
$1.8 / Unit
View Datasheet →PIC16F18856T-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.95 / Unit
View Datasheet →PIC16F18876T-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC enhanced mid-range |
| Family | PIC16F1885X/7X (PIC16F18876) |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data RAM | 2 KB |
| Data EEPROM | 256 B |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 2.3V to 5.5V |
| ADC | 10-bit, up to 24 channels (ADC2 with automated features) |
| DAC | 5-bit / 8-bit |
| Comparators | Yes (with hysteresis) |
| PWM / SMT / CWG / ZCD | Yes |
| Communication | EUSART, SPI, I2C |
| Peripheral Pin Select (PPS) | Yes |
| CRC/SCAN, HLT, WWDT | Yes |
| Low-Power Technology | XLP (eXtreme Low Power) |
| Functional Safety (FuSa) | Yes |
| Operating Temperature | -40C to +85C (Industrial -I) |
| Package | 44-pin QFN (8x8 mm) with exposed pad (ML) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16F18876T-I/ML Pin Configuration
| Pin 1 | RE3/MCLR — Digital I/O / Master Clear (reset) input |
| Pin 2 | RA0 — Digital I/O / analog input |
| Pin 3 | RA1 — Digital I/O / analog input |
| Pin 4 | RA2 — Digital I/O / analog input |
| Pin 5 | RA3 — Digital I/O / analog input |
| Pin 6 | RA4 — Digital I/O / analog input |
| Pin 7 | RA5 — Digital I/O / analog input |
| Pin 8 | RA6 — Digital I/O / analog input |
| Pin 9 | RA7 — Digital I/O / analog input |
| Pin 10 | VSS — Ground reference |
| Pin 11 | VDD — Positive supply voltage (2.3-5.5V) |
| Pin 12 | RB0 — Digital I/O / analog / PPS-remappable |
| Pin 13 | RB1 — Digital I/O / analog / PPS-remappable |
| Pin 14 | RB2 — Digital I/O / analog / PPS-remappable |
| Pin 15 | RB3 — Digital I/O / analog / PPS-remappable |
| Pin 16 | RB4 — Digital I/O / analog / PPS-remappable |
| Pin 17 | RB5 — Digital I/O / analog / PPS-remappable |
| Pin 18 | RB6 — Digital I/O / analog / PPS-remappable |
| Pin 19 | RB7 — Digital I/O / analog / PPS-remappable |
| Pin 20 | VSS — Ground reference |
| Pin 21 | VDD — Positive supply voltage (2.3-5.5V) |
| Pin 22 | RC0 — Digital I/O / analog / PPS-remappable |
| Pin 23 | RC1 — Digital I/O / analog / PPS-remappable |
| Pin 24 | RC2 — Digital I/O / analog / PPS-remappable |
| Pin 25 | RC3 — Digital I/O / analog / PPS-remappable |
| Pin 26 | RC4 — Digital I/O / analog / PPS-remappable |
| Pin 27 | RC5 — Digital I/O / analog / PPS-remappable |
| Pin 28 | RC6 — Digital I/O / analog / PPS-remappable |
| Pin 29 | RC7 — Digital I/O / analog / PPS-remappable |
| Pin 30 | VSS — Ground reference |
| Pin 31 | VDD — Positive supply voltage (2.3-5.5V) |
| Pin 32 | RD0 — Digital I/O / analog / PPS-remappable |
| Pin 33 | RD1 — Digital I/O / analog / PPS-remappable |
| Pin 34 | RD2 — Digital I/O / analog / PPS-remappable |
| Pin 35 | RD3 — Digital I/O / analog / PPS-remappable |
| Pin 36 | RD4 — Digital I/O / analog / PPS-remappable |
| Pin 37 | RD5 — Digital I/O / analog / PPS-remappable |
| Pin 38 | RD6 — Digital I/O / analog / PPS-remappable |
| Pin 39 | RD7 — Digital I/O / analog / PPS-remappable |
| Pin 40 | RE0 — Digital I/O / analog / PPS-remappable |
| Pin 41 | RE1 — Digital I/O / analog / PPS-remappable |
| Pin 42 | RE2 — Digital I/O / analog / PPS-remappable |
| Pin 43 | AVSS — Analog ground reference |
| Pin 44 | AVDD — Analog positive supply |
Typical Applications
PIC16F18876T-I/ML is suitable for 6 applications: IoT Sensor Nodes, Industrial Sensor Interface, Battery-Powered Metering, LED Lighting Controllers, Low-Power Remote Controls, Home Appliance Control Panels.
IoT Sensor Nodes
The PIC16F18876T-I/ML fits IoT sensor nodes because its XLP nanoWatt sleep currents extend battery life into the multi-year range while the 24-channel 10-bit ADC2 handles multiple analog sensors with automated averaging and threshold detection. The 28KB Flash hosts a sensor-fusion state machine plus a UART or SPI command parser for radio modules. PPS pin mapping lets a single PCB layout serve multiple sensor SKUs by remapping digital functions, reducing hardware variants.
Recommended
Industrial Sensor Interface
Industrial sensor interfaces demand robust ADCs, isolated communication, and wide voltage tolerance - all delivered by the PIC16F18876T-I/ML. The 10-bit ADC2 with 24 channels multiplexes multiple 4-20mA or 0-10V analog inputs through signal conditioning. The 2.3-5.5V operating range tolerates industrial 24V-bus-derived rails after regulation. The CRC/SCAN and HLT peripherals support functional-safety loops required in IEC 61508-capable machinery.
Recommended
Battery-Powered Metering
Battery-powered metering benefits from the PIC16F18876T-I/ML's XLP sleep modes (microamp-class idle with RAM retention) and 32-bit timer/SMT for long-interval wake cycles. The 256-byte EEPROM stores meter calibration and tamper counters without external NVRAM, while the 28KB Flash supports DLMS/COSEM or simple Modbus protocol stacks. The 44-QFN exposed pad keeps the device within compact metering enclosures while sinking RTC and sensor quiescent currents.
Recommended
LED Lighting Controllers
LED lighting controllers require multiple PWM channels, high-resolution dimming, and reliable communication - all delivered by the PIC16F18876T-I/ML. The integrated PWM, CWG (Complementary Waveform Generator), and SMT (Signal Measurement Timer) handle multi-channel LED drivers and zero-cross detection for TRIAC dimming. The DAC and comparators close current-feedback loops for constant-current drivers. CIP blocks offload dimming math from the CPU, freeing cycles for DALI or DMX protocol parsing.
Recommended
Low-Power Remote Controls
Low-power remote controls rely on the PIC16F18876T-I/ML's nanoWatt sleep modes, where the part draws single-digit microamps waiting for a button interrupt while preserving RAM state. The 32MHz CPU wakes quickly to drive IR/PWM modulation and parse incoming RF commands. The 28KB Flash stores a full key matrix scanner plus a pairing/encryption library. The 44-QFN exposed-pad package fits slim handheld enclosures without thermal concerns at low duty cycles.
Recommended
Home Appliance Control Panels
Home appliance control panels use the PIC16F18876T-I/ML to drive segmented or graphical LCDs, scan capacitive touch buttons, and regulate motor/temperature control loops. The 24-channel ADC samples thermistor and motor-current feedback while the PWM/SMT generates TRIAC-firing timing for heater/induction elements. The Functional Safety (FuSa) peripherals (CRC/SCAN/HLT/WWDT) support safety-relevant appliance classifications where watchdog and fault detection are mandated.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18876T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18876-I/ML | PIC16F18875T-I/ML | PIC16F18855-I/ML | PIC16F18857-I/ML | PIC16F18856T-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8) with EP | 44-QFN (8x8) with EP | 44-QFN (8x8) with EP | 44-QFN (8x8) with EP | 44-QFN (8x8) with EP | 44-QFN (8x8) with EP |
| Flash Memory | 28 KB | 28 KB | 24 KB | 14 KB | 56 KB | 28 KB |
| RAM | 2 KB | 2 KB | 1.5 KB | 1 KB | 4 KB | 2 KB |
| EEPROM | 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 | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V |
| XLP Low-Power | Yes | Yes | Yes | Yes | Yes | Yes |
| Functional Safety (FuSa) | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Highest Flash density in 44-QFN footprint with full peripheral set (vs PIC16F18855-I/ML)
- Functional Safety (FuSa) peripherals for IEC 61508 development (vs PIC16F18875T-I/ML)
- Industrial -40C to +85C temperature range with FuSa support (vs PIC16F18856T-I/ML)
Design Notes
The 44-QFN (8x8 mm) package exposes a thermal pad on the underside that must be soldered to a continuous ground copper pour on the top layer with multiple thermal vias stitching to an internal ground plane. Without proper pad soldering the part's junction-to-ambient thermal resistance rises, and PPS-related signal integrity may degrade. Recommended copper-pour area is at least 25 mm^2 with 0.3mm-pitch via array. Estimated: at 32MHz active, the PIC16F18876T-I/ML dissipates approximately 15-20 mW internally; a properly soldered EP keeps die temperature rise under 5C above ambient.
Place a 100nF decoupling capacitor as close as possible to every VDD/VSS pin pair, and a single 10uF bulk capacitor near the package entry. Place a 100nF + 10uF pair on AVDD/AVSS for ADC reference stability. The PPS-remappable peripherals can switch digital lines at high dV/dt; keep analog traces short and guarded to avoid ADC sampling noise injection. Use IDLE/DOZE/PMD modes aggressively to minimize active current in duty-cycled sensor firmware.
Use PPS to route digital functions (EUSART, SPI, I2C, PWM) away from analog ADC inputs; even a few millimeters of coupling between a 32MHz PWM line and a 24-channel ADC input can degrade SNR by 6-10 dB. Keep the 32.768kHz crystal traces short and symmetric if an external low-frequency oscillator is used for RTC, and guard the crystal area with a ground ring to suppress coupling to the ADC. Route the ICSP programming pins (PGD/PGC) to an accessible header or test pad for in-circuit firmware updates.
Do not exceed 5.5V on VDD or AVDD - the PIC16F18876T-I/ML does not include absolute-maximum-tolerant over-voltage clamps and 6V supply transients can permanently damage the part. Always sequence AVDD and VDD together within 0.3V; large mismatches force current through the internal ESD structures. When migrating from the PIC16F18855/18857, double-check the PPS mapping tables - PPS input/output channel assignments differ between family members even within the same QFN footprint.
Compliance Information
RoHS and REACH compliant per Microchip product page; the standard -I/ML part is industrial-grade, not AEC-Q100 qualified - look at VAO suffix variants for automotive. Functional Safety (FuSa) peripherals aid IEC 61508 system development but do not by themselves certify the part.
