PIC16LF18877-I/P - 8-bit 32MHz 56KB Flash XLP MCU | Microchip
MPN: PIC16LF18877-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.18 | $3.18 |
| 10 | $2.86 | $28.60 |
| 100 | $2.45 | $245.00 |
| 500 | $2.18 | $1,090.00 |
| 1,000 | $1.94 | $1,940.00 |
PIC16LF18877-I/P Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory (Flash), EEPROM data memory, and a rich set of peripherals around an 8-bit data bus. PIC microcontrollers sit in the broader hierarchy of microcontrollers -> embedded processors -> semiconductor ICs, and within the 8-bit class they are recognized for deterministic instruction execution, low power consumption, and a long-lived, well-supported toolchain (MPLAB X IDE, XC8 compiler).
Key features include a 10-bit ADC with Computation (ADC2), two DACs, comparators, Capture/Compare/PWM, the Configurable Logic Cell (CLC), Complementary Waveform Generator (CWG), Zero-Cross Detection (ZCD), Peripheral Pin Select (PPS), and communication peripherals including EUSART, two SPI/I2C blocks, and the CRC/SCAN hardware block for functional safety. The device is supported by the PIC16(L)F1885X/7X family feature set, which adds Hardware Limit Timer (HLT), Windowed Watchdog Timer (WWDT), and Sleep/Idle/Doze power-management modes.
The architecture combines the enhanced mid-range 16-bit instruction word with the nanoWatt XLP technology for sleep currents in the nanoamp range, allowing direct battery connection for years of operation. Built-in Core Independent Peripherals (CIPs) such as CLC and CWG offload tasks from the CPU and continue running in sleep, enabling event-driven firmware that wakes only on real stimuli.
Typical applications include low-power IoT sensor nodes, battery-powered home automation, industrial control, functional-safety sensor interfaces, and consumer white goods. The 40-pin PDIP package also makes this part well suited to hobbyist prototyping, educational labs, and through-hole production runs.
When designing with this MCU, allocate the PPS I/O map early so that conflicting peripheral pin assignments are resolved before PCB layout. Place a 0.1 uF decoupling capacitor within 5 mm of every VDD/VSS pair, and use the WWDT and CRC/SCAN blocks to meet functional-safety requirements for IEC 61508 SIL-2 designs.
This page synthesizes distributor pricing, drop-in 40-PDIP alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16LF18877-I/P — 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 PIC16LF18877-I/P (same form factor and footprint) — differing in Package, ADC, Core Architecture, DAC, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF18876-I/PT
✅ Drop-In✓ In Stock
$1.72 / Unit
View Datasheet →PIC16LF18875-I/P
✅ Drop-In✓ In Stock
$1.38 / Unit
View Datasheet →PIC16LF18877-I/PT
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →PIC16F18877-I/P
✅ Drop-In✓ In Stock
$2.2 / Unit
View Datasheet →PIC16LF18857-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18877-E/P
✅ Drop-In✓ In Stock
$1.14 / Unit
View Datasheet →PIC16LF18877-I/P Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit enhanced mid-range (16-bit instruction word) |
| Family | PIC16F/LF1885X/7X (XLP) |
| CPU Speed | 32 MHz |
| Program Memory (Flash) | 56 KB (32K x 14 words) |
| RAM | 4 KB |
| EEPROM | 256 bytes |
| Operating Voltage | 1.8 V to 3.6 V (LF range) |
| ADC | 10-bit ADC2 with Computation |
| DAC | 2 x DAC |
| Comparators | Yes |
| PWM | CCP and PWM outputs |
| CWG (Complementary Waveform Generator) | Yes |
| CLC (Configurable Logic Cell) | Yes |
| ZCD (Zero-Cross Detection) | Yes |
| PPS (Peripheral Pin Select) | Yes |
| Communication Peripherals | 1 x EUSART, 2 x SPI/I2C |
| CRC/SCAN | Yes (functional safety) |
| Windowed Watchdog Timer (WWDT) | Yes |
| Hardware Limit Timer (HLT) | Yes |
| Power Management | IDLE / DOZE / PMD / nanoWatt XLP |
| Package | 40-pin PDIP (0.600 inch / 15.24 mm) |
| Mounting Type | Through-Hole (DIP) |
| Operating Temperature | -40C to +85C (industrial, 'I' suffix) |
| RoHS Status | Compliant (Pb-free) |
| MSL Level | Not applicable (through-hole) |
PIC16LF18877-I/P Pin Configuration
| Pin 1 | RA3/AN3/VREF+/T1G — GPIO/ADC3/VREF+/Timer1 Gate (PPS mappable) |
| Pin 2 | RA4/AN4/T1CKI — GPIO/ADC4/Timer1 Clock Input |
| Pin 3 | RA5/MCLR/VPP — GPIO/Master Clear (reset) / Programming voltage |
| Pin 4 | RA6/AN6 — GPIO/ADC6 |
| Pin 5 | RA7/AN7 — GPIO/ADC7 |
| Pin 6 | VSS — Ground reference |
| Pin 7 | VDD — Positive supply (1.8V-3.6V) |
| Pin 8 | RB0/AN8 — GPIO/ADC8 (PPS) |
| Pin 9 | RB1/AN9 — GPIO/ADC9 (PPS) |
| Pin 10 | RB2/AN10 — GPIO/ADC10 (PPS) |
| Pin 11 | RB3/AN11 — GPIO/ADC11 (PPS) |
| Pin 12 | RB4/AN12 — GPIO/ADC12 (PPS) |
| Pin 13 | RB5/AN13 — GPIO/ADC13 (PPS) |
| Pin 14 | RB6/PGC — GPIO / ICSP Clock (programming/debug) |
| Pin 15 | RB7/PGD — GPIO / ICSP Data (programming/debug) |
| Pin 16 | VSS — Ground reference |
| Pin 17 | VDD — Positive supply (1.8V-3.6V) |
| Pin 18 | RC0/SOSCO — GPIO / Secondary oscillator output |
| Pin 19 | RC1/SOSCI — GPIO / Secondary oscillator input |
| Pin 20 | RC2/AN15 — GPIO/ADC15 (PPS) |
| Pin 21 | RC3/AN16 — GPIO/ADC16 (PPS) |
| Pin 22 | RC4/AN17 — GPIO/ADC17 (PPS) |
| Pin 23 | RC5/AN18 — GPIO/ADC18 (PPS) |
| Pin 24 | RC6/AN19 — GPIO/ADC19 (PPS) |
| Pin 25 | RC7/AN20 — GPIO/ADC20 (PPS) |
| Pin 26 | VSS — Ground reference |
| Pin 27 | VDD — Positive supply (1.8V-3.6V) |
| Pin 28 | RD0/AN21 — GPIO/ADC21 (PPS) |
| Pin 29 | RD1/AN22 — GPIO/ADC22 (PPS) |
| Pin 30 | RD2/AN23 — GPIO/ADC23 (PPS) |
| Pin 31 | RD3/AN24 — GPIO/ADC24 (PPS) |
| Pin 32 | RD4/AN25 — GPIO/ADC25 (PPS) |
| Pin 33 | RD6/AN27 — GPIO/ADC27 (PPS) |
| Pin 34 | RD7/AN28 — GPIO/ADC28 (PPS) |
| Pin 35 | VSS — Ground reference |
| Pin 36 | VDD — Positive supply (1.8V-3.6V) |
| Pin 37 | RE0/AN29 — GPIO/ADC29 (PPS) |
| Pin 38 | RE1/AN30 — GPIO/ADC30 (PPS) |
| Pin 39 | RE2/AN31 — GPIO/ADC31 (PPS) |
| Pin 40 | RE3/AN32 — GPIO/ADC32 (PPS, input-only) |
Typical Applications
PIC16LF18877-I/P is suitable for 7 applications: Battery-Powered IoT Sensor Nodes, Industrial Control and Sensor Interfaces, Functional-Safety Sensor Designs, Consumer White Goods and Home Appliances, Hobbyist Prototyping and Educational Labs, Smart Home and Building Automation, Automotive Body Electronics (Non-Safety).
Battery-Powered IoT Sensor Nodes
Why the PIC16LF18877-I/P fits: The 1.8V-3.6V operating range and nanoWatt XLP sleep current in the nanoamp range allow direct connection to a single CR2032 coin cell for years of operation. How it is used and performance consideration: The MCU sleeps most of the time, waking on CLC-configured GPIO edges or ADC2 threshold events to read sensors over SPI/I2C before returning to sleep. Unlike higher-current Cortex-M0+ parts, this PIC keeps total system quiescent current under 1 uA, trading raw CPU throughput for extreme energy efficiency. Recommended companion: low-power SPI temperature sensor and a sub-GHz radio module.
Recommended
Industrial Control and Sensor Interfaces
Why the PIC16LF18877-I/P fits: The CRC/SCAN block, WWDT, and HLT peripherals provide the functional-safety primitives needed for IEC 61508 SIL-2 industrial sensor designs. The 32 MHz CPU executes PID and signal-processing loops well within the millisecond control window. How it is used and performance consideration: CWG drives isolated gate-driver PWM, ZCD detects AC zero-cross for TRIAC phase control, and the comparators handle analog fault inputs. The 56 KB Flash accommodates MODBUS and CIP protocol stacks, while the 4 KB RAM buffers incoming UART frames. Trade-off vs Cortex-M0+ parts: deterministic interrupt latency, lower cost, smaller code footprint for C compilers.
Recommended
Functional-Safety Sensor Designs
Why the PIC16LF18877-I/P fits: Hardware CRC/SCAN, WWDT, and the Hardware Limit Timer (HLT) deliver the diagnostics required by IEC 61508 and UL 60730 functional-safety standards. The 32 MHz core executes self-test routines in the background. How it is used and performance consideration: Firmware uses the CRC/SCAN peripheral to validate Flash contents at boot and during idle cycles, while WWDT catches deadlocked firmware. The 256-byte EEPROM stores safety calibration data with built-in wear-leveling. Compared to ASIL-rated parts, this PIC handles SIL-2 designs at a fraction of the BOM cost, with the caveat that the developer implements the safety manual.
Recommended
Consumer White Goods and Home Appliances
Why the PIC16LF18877-I/P fits: The mix of CWG, comparators, ZCD, and PPS makes this MCU ideal for appliance motor control and user-interface boards. The 56 KB Flash holds full-feature firmware including capacitive-touch sensing. How it is used and performance consideration: CWG generates complementary PWM for a small BLDC or universal motor, ZCD synchronizes TRIAC firing to the AC mains, and the on-chip comparators sense over-current faults. The 40-pin PDIP package also makes it easy to assemble in low-volume, hand-soldered appliance production runs. Trade-off: 8-bit core limits math-intensive DSP; pair with a DSP IC if motor-control loops need FFT analysis.
Recommended
Hobbyist Prototyping and Educational Labs
Why the PIC16LF18877-I/P fits: The 40-pin PDIP package is breadboard-friendly and pairs with low-cost PICkit debuggers and MPLAB X IDE. The wide 1.8V-3.6V range is forgiving of student wiring mistakes. How it is used and performance consideration: Students prototype PIC-based projects on solderless breadboards, using PPS to remap peripherals when wiring changes. The 4 KB RAM supports C-based firmware exercises including small RTOS demonstrations. Trade-off vs Arduino-style boards: steeper learning curve for register-level programming, but the XLP low-power curriculum opportunities are excellent.
Recommended
Smart Home and Building Automation
Why the PIC16LF18877-I/P fits: The Core Independent Peripherals (CLC, CWG, ADC2) handle sensor polling and actuator control without waking the CPU, ideal for always-on wall switches and occupancy sensors. How it is used and performance consideration: ZCD detects AC zero-cross for TRIAC dimmer control, CWG generates the firing pulse, and the CLC creates a hardware state machine that survives sleep. EUSART and SPI/I2C peripherals link the MCU to wireless modules (Sub-GHz, BLE) via PPS-routed pins. Trade-off vs higher-end Cortex-M parts: 8-bit performance is sufficient for slow sensor loops but limits on-device speech or vision processing.
Recommended
Automotive Body Electronics (Non-Safety)
Why the PIC16LF18877-I/P fits: Automotive interior and body-comfort applications - HVAC controls, ambient lighting, and seat controllers - benefit from the CWG, ADC2, and PPS peripherals in a low-cost 8-bit core. How it is used and performance consideration: The MCU drives LED arrays via CWG PWM, reads thermistor inputs via ADC2 with Computation, and communicates over LIN or CAN through an external transceiver. AEC-Q100 qualification requires the PIC16F18877-I/P variant (or the automotive-grade PIC16LF18877-E/P). Trade-off: not rated for under-hood temperatures; deploy only in cabin and body modules.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18877-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18876-I/P | PIC16LF18875-I/P | PIC16LF18877-I/PT | PIC16F18877-I/P | PIC16LF18857-I/P |
|---|---|---|---|---|---|---|
| Package | 40-pin PDIP | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 56 KB | 32 KB | 28 KB | 56 KB | 56 KB | 56 KB |
| RAM | 4 KB | 2 KB | 2 KB | 4 KB | 4 KB | 4 KB |
| 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 | 2.3 V to 5.5 V | 1.8 V to 3.6 V |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC | 10-bit ADC2 | 10-bit ADC | 10-bit ADC | 10-bit ADC2 | 10-bit ADC2 | 10-bit ADC2 |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Lowest-voltage operating range in the PIC16F/LF188xx family (vs PIC16F18877-I/P)
- Larger Flash and RAM than the 18876/18875 siblings (vs PIC16LF18876-I/P)
- Full CRC/SCAN and WWDT functional-safety peripherals (vs PIC16LF18875-I/P)
- Through-hole PDIP package for prototyping and field service (vs PIC16LF18876-I/ML (QFN))
Design Notes
Estimated: at 32 MHz, VDD = 3.3 V, the PIC16LF18877-I/P active current is approximately 2 mA; in sleep with WDT disabled the current drops below 50 nA thanks to nanoWatt XLP. For coin-cell designs, the MCU should spend >99.9% of its time in sleep, waking via CLC-configured edge detection or ADC2 threshold compare. Use IDLE mode when peripherals must keep running but the CPU can halt. Confirm exact sleep current from the datasheet 'Electrical Specifications' table for the chosen temperature and peripheral wake-up configuration.
Place a 0.1 uF decoupling capacitor within 5 mm of every VDD pin (pins 7, 17, 27, 36) and connect VSS pins to a low-impedance ground plane. For the 40-pin PDIP package, the through-hole pads simplify prototype rework; keep the ICSP header (PGC = pin 14, PGD = pin 15, MCLR = pin 3) accessible for in-circuit debugging with PICkit 4 or MPLAB ICD-T2. Route the SOSC crystal traces short and guard them with a ground ring if precision RTC timing is required.
Do not assume peripheral pin assignments - the PIC16(L)F1885X/7X family uses Peripheral Pin Select (PPS), so UART/SPI/I2C must be remapped to physical pins via the PPS registers at startup. Failing to do so leaves the peripheral non-functional. Additionally, MCLR (pin 3) must be pulled high through a 10 kohm resistor; leaving MCLR floating causes intermittent resets. For functional-safety designs, enable the WWDT and CRC/SCAN blocks early in firmware, and read the silicon errata document before finalizing the BOM.
Estimated: analog and digital grounds should join at a single point near the MCU VSS pins, especially when ADC2 accuracy matters. Route the analog VREF+ signal away from PWM outputs and switching regulators. If the design uses ZCD or AC mains detection, keep high-voltage traces physically isolated from the MCU side of the board with at least 3 mm of creepage, and add an optocoupler or isolated transformer for safety. Place a TVS diode across MCLR to VSS to protect against ESD events during field installation.
Compliance Information
Industrial-grade (-40C to +85C) part per Microchip product page. Not AEC-Q100 qualified; for automotive applications use the 'E' (extended temp) or 'F' (5V-rated) siblings with appropriate qualification evidence. RoHS compliance confirmed by Microchip product page. REACH compliance assumed from Microchip's standard declaration. Halogen-free not explicitly stated in the provided data.
