PIC16F18877-I/ML - 8-Bit 32MHz 56KB Flash XLP MCU | Microchip
MPN: PIC16F18877-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.07 | $30.70 |
| 100 | $2.74 | $274.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.18 | $2,180.00 |
PIC16F18877-I/ML Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for deterministic real-time control, low power consumption, and low cost. Within the broader semiconductor taxonomy, 8-bit MCUs sit below 16-bit and 32-bit MCUs in arithmetic throughput, but excel in motor control, simple sensor hubs, and battery-powered IoT edge nodes where simplicity, latency determinism, and BOM cost matter more than raw MIPS. The PIC16F18877 implements Microchip's enhanced mid-range core with a 14-bit instruction word.
Key features include 56KB Flash, 4KB SRAM, 256B EEPROM, up to 32MHz operation from an internal oscillator, a 10-bit ADC with computation, multiple Core Independent Peripherals (CIPs), and eXtreme Low Power modes for battery applications. Functional Safety peripherals such as CRC/SCAN and HLT (Hardware Limit Timer) are integrated for ASIL-capable systems.
The PIC16F18877 family supports a wide peripheral set: multiple PWM modules, capture/compare, I2C/SPI/UART with DMX, LIN, and IrDA support, configurable logic cells, and signal measurement timers. The internal 32MHz oscillator and PLL eliminate external clock components in most designs, reducing BOM cost and PCB area.
Typical applications include IoT sensor nodes, wearable fitness devices, low-power remote controls, HVAC control, LED lighting controllers, automotive body and comfort modules, consumer appliances, and industrial sensor interfaces. The XLP technology with sub-uA sleep currents makes it ideal for energy-harvesting or coin-cell powered products.
When designing with this part, observe the decoupling recommendations in the datasheet: place a 100nF capacitor near each VDD pin and a bulk capacitor on VDDCORE. The exposed thermal pad (EP) on the 44-QFN must be soldered to the PCB ground plane for thermal dissipation and electrical grounding.
This page synthesizes distributor pricing, drop-in alternative MPNs, application notes, and design considerations not found in the manufacturer datasheet alone, helping procurement and engineering teams evaluate the PIC16F18877-I/ML for new designs and pin-compatible retrofits.
Drop-in alternatives for PIC16F18877-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 PIC16F18877-I/ML (same form factor and footprint) — differing in Package, ADC, Core Architecture, Program Memory (Flash), Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18876-I/ML
✅ Drop-In✓ In Stock
$2.15 / Unit
View Datasheet →PIC16F18875-I/ML
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F18877-E/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LF18877-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16F18877-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 Enhanced Mid-Range 8-bit |
| Program Memory (Flash) | 56 KB |
| Data Memory (SRAM) | 4 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| ADC | 10-bit with Computation |
| Communication Peripherals | I2C, SPI, UART (with LIN/DMX/IrDA support) |
| Core Independent Peripherals (CIP) | Yes (CLC, NCO, CRC/SCAN, HLT) |
| Functional Safety (FuSa) | Yes (CRC/SCAN, HLT, windowed WDT) |
| eXtreme Low Power (XLP) | Yes (sub-uA sleep current) |
| Package | 44-pin QFN (8x8 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +85C (Industrial) |
| RoHS Status | Compliant |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
PIC16F18877-I/ML 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 | RA8 — Bidirectional I/O / analog input |
| Pin 11 | RA9 — Bidirectional I/O / analog input |
| Pin 12 | RA10 — Bidirectional I/O / analog input |
| Pin 13 | RA11 — Bidirectional I/O / analog input |
| Pin 14 | RA12 — Bidirectional I/O / analog input |
| Pin 15 | RA13 — Bidirectional I/O / analog input |
| Pin 16 | RA14 — Bidirectional I/O / analog input |
| Pin 17 | VDD — Positive supply voltage |
| Pin 18 | RB0 — Bidirectional I/O / interrupt-on-change |
| Pin 19 | RB1 — Bidirectional I/O / interrupt-on-change |
| Pin 20 | RB2 — Bidirectional I/O / interrupt-on-change |
| Pin 21 | RB3 — Bidirectional I/O / interrupt-on-change |
| Pin 22 | RB4 — Bidirectional I/O / interrupt-on-change |
| Pin 23 | RB5 — Bidirectional I/O / interrupt-on-change |
| Pin 24 | RB6 — Bidirectional I/O / ICSPCLK |
| Pin 25 | RB7 — Bidirectional I/O / ICSPDAT |
| Pin 26 | RC0 — Bidirectional I/O |
| Pin 27 | RC1 — Bidirectional I/O |
| Pin 28 | RC2 — Bidirectional I/O |
| Pin 29 | RC3 — Bidirectional I/O |
| Pin 30 | RC4 — Bidirectional I/O |
| Pin 31 | RC5 — Bidirectional I/O |
| Pin 32 | RC6 — Bidirectional I/O |
| Pin 33 | RC7 — Bidirectional I/O |
| Pin 34 | RE0 — Bidirectional I/O |
| Pin 35 | RE1 — Bidirectional I/O |
| Pin 36 | RE2 — Bidirectional I/O |
| Pin 37 | RD0 — Bidirectional I/O |
| Pin 38 | RD1 — Bidirectional I/O |
| Pin 39 | RD2 — Bidirectional I/O |
| Pin 40 | RD3 — Bidirectional I/O |
| Pin 41 | RD4 — Bidirectional I/O |
| Pin 42 | RD5 — Bidirectional I/O |
| Pin 43 | RD6 — Bidirectional I/O |
| Pin 44 | RD7 — Bidirectional I/O |
| Pin EP | EP — Exposed thermal pad - connect to VSS |
Typical Applications
PIC16F18877-I/ML is suitable for 6 applications: Battery-Powered IoT Sensor Node, Automotive Body and Comfort Module, Wearable Fitness and Health Device, HVAC and Building Automation Controller, LED Lighting Controller, Consumer Appliance Control Board.
Battery-Powered IoT Sensor Node
The PIC16F18877-I/ML suits IoT sensor endpoints because its XLP sleep current is below 1 uA and its 32MHz core handles LoRaWAN, Sigfox, or BLE-stack bridging on the 56KB Flash. The integrated 10-bit ADC with computation and CLC peripherals sample temperature, humidity, or motion sensors while the CPU sleeps. The 44-QFN (8x8 mm) package fits coin-cell enclosures, and the 1.8-5.5V range supports direct LiSOCl2 primary cell connection without an LDO.
Recommended
Automotive Body and Comfort Module
The PIC16F18877-I/ML is well suited for automotive body controllers (window lift, seat control, mirror adjustment) because it integrates Functional Safety peripherals - CRC/SCAN, windowed WDT, and HLT - that support ASIL-B capable designs. Its LIN-compatible UART interfaces with body-domain LIN slaves, and the 44-QFN footprint meets automotive PCB density targets. The XLP sleep mode keeps quiescent current below 100 uA when the vehicle is parked, preserving battery life over weeks of inactivity.
Recommended
Wearable Fitness and Health Device
For fitness bands and heart-rate wearables, the PIC16F18877-I/ML offers the low-power XLP modes that enable multi-day battery life alongside a 32MHz core capable of running BLE stack bridges or PPG-sensor algorithms. The CWG and NCO peripherals generate precise PWM for haptic feedback and LED driver control. The compact 44-QFN (8x8 mm) suits wristband enclosures, and sub-uA sleep current preserves the coin cell between workouts.
Recommended
HVAC and Building Automation Controller
In HVAC zone controllers and thermostat designs, the PIC16F18877-I/ML runs the user interface, sensor fusion, and actuator control loops on its 32MHz core. The 10-bit ADC with computation oversamples thermistor inputs for accurate room temperature readings, while the CLC handles zero-crossing detection for TRIAC-driven fan control without CPU load. The 56KB Flash supports BACnet or Modbus application stacks for building automation networks.
Recommended
LED Lighting Controller
The PIC16F18877-I/ML drives multi-channel LED fixtures using its CWG (Complementary Waveform Generator) and multiple PWM channels, achieving smooth dimming without CPU overhead. The 32MHz core handles DMX512 or DALI lighting protocol stacks within the 56KB Flash budget. Its 1.8-5.5V range simplifies direct connection to both 3.3V digital logic and 5V LED driver analog stages.
Recommended
Consumer Appliance Control Board
The PIC16F18877-I/ML serves as the main controller in washing machines, dishwashers, and small kitchen appliances where its 32MHz core handles user-interface scanning, motor control loops, and safety monitoring. The Hardware Limit Timer (HLT) and windowed watchdog support IEC 60730 Class B functional safety, which is mandatory for many appliance categories. The 44-QFN package withstands the thermal and vibration environment of appliance cabinets.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18877-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18876-I/ML | PIC16F18875-I/ML | PIC16F18877-E/ML | PIC16LF18877-I/ML |
|---|---|---|---|---|---|
| Package | 44-pin QFN (8x8 mm) | 44-pin QFN (8x8 mm) - same | 44-pin QFN (8x8 mm) - same | 44-pin QFN (8x8 mm) - same | 44-pin QFN (8x8 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 56 KB | 28 KB (-50%) | 32 KB (-43%) | 56 KB (same) | 56 KB (same) |
| SRAM | 4 KB | 2 KB (-50%) | 2 KB (-50%) | 4 KB (same) | 4 KB (same) |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V (LF) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (extended) | -40C to +85C |
| Core Independent Peripherals (CIP) | Yes (CLC, NCO, CRC/SCAN, HLT, CWG) | Yes (same set) | Yes (same set) | Yes (same set) | Yes (same set) |
| Functional Safety (FuSa) | Yes (CRC/SCAN, windowed WDT, HLT) | Yes (same) | Yes (same) | Yes (same) | Yes (same) |
Key Differentiators
- Largest Flash and RAM in the PIC16F1887x 44-QFN family (vs PIC16F18876-I/ML)
- Industrial temperature range with full XLP low-power support (vs PIC16F18877-E/ML)
- Full 1.8-5.5V wide-voltage operation (vs PIC16LF18877-I/ML)
Design Notes
The PIC16F18877-I/ML has separate VDD and VDDCORE pins. Place a 100nF ceramic decoupling capacitor within 2mm of each VDD pin and a 10uF bulk capacitor near the VDDCORE pin. For battery applications, use the internal voltage regulator with a 1uF capacitor on VDDCORE. The XLP sleep current drops below 1 uA when peripherals are disabled via PMDx registers - enable only required peripherals to minimize quiescent draw.
The 44-pin QFN package has an exposed thermal pad on the underside that must be soldered to a PCB land pattern with at least 8 thermal vias (0.3 mm diameter) connecting to an internal ground plane. Without proper EP soldering, the device may overheat at higher clock speeds and fail programming diagnostics. Allocate at least 25 mm² of 1 oz copper under the EP for thermal dissipation in industrial temperature designs.
Do not leave ICSP pins RB6 (ICSPCLK) and RB7 (ICSPDAT) floating in production - either pull them to VDD with 10k resistors or assign them as outputs driving defined logic levels. Floating ICSP pins can cause unintended entry into programming mode during electrical noise events. Also, configure unused I/O pins as outputs driving low or as inputs with internal weak pull-ups enabled to minimize supply current and reduce EMI susceptibility.
Compliance Information
RoHS and REACH compliant per Microchip product page; lead-free finish. AEC-Q100 automotive qualification is available on the automotive-grade variant PIC16F18877-E/ML (extended temperature) - standard -I/ML is industrial-grade only.
