PIC16F18877-I/P - 8-bit 32MHz 56KB Flash XLP MCU | Microchip
MPN: PIC16F18877-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.78 | $278.00 |
| 500 | $2.5 | $1,250.00 |
| 1,000 | $2.2 | $2,200.00 |
PIC16F18877-I/P Overview
A PIC microcontroller is a Harvard-architecture 8-bit RISC microprocessor with on-chip Flash, RAM, EEPROM and peripherals, widely used in embedded control. Within the hierarchy, the PIC16F18877 sits as PIC → PIC16 → PIC16F1xxx → enhanced mid-range core with CIP block, positioned above baseline PIC10/12/14 families and below 16-bit dsPIC and 32-bit SAM devices. The eXtreme Low Power (XLP) technology targets battery-powered applications where nanoWatt sleep currents extend operating life.
Key features of this MCU include 32MHz internal oscillator operation, 14-channel 10-bit ADC, multiple UART/I2C/SPI interfaces, Configurable Logic Cells (CLC), Complementary Waveform Generator (CWG), Numerically Controlled Oscillator (NCO), and built-in CRC/SCAN with Hardware Limit Timer (HLT) for functional safety compliance. The 40-pin PDIP provides generous I/O for human-machine interface and sensor-front-end designs.
Architecturally, the device uses an enhanced mid-range 8-bit core with a 14-bit instruction word, allowing 32K x 14 Flash organization. Hardware multiplier, multiple interrupt sources, peripheral pin select, and zero-crossing detect make it suitable for mixed-signal IoT endpoints. The Functional Safety (FuSa) documentation package helps designers targeting IEC 61508 SIL-aware systems.
Typical applications include IoT sensor nodes, wearable health devices, low-power remote controls, HVAC controllers, industrial sensor conditioning, and consumer white goods. The combination of CIP offloads and XLP sleep modes allows sensor fusion and power management tasks to run autonomously without waking the CPU.
When designing with this part, place a 0.1µF decoupling capacitor adjacent to each VDD pin and ensure the MCLR pin is pulled high through a 10kΩ resistor for normal operation. Verify unused I/O pins are configured as outputs to minimize sleep current.
This page synthesizes distributor pricing, drop-in alternatives, and application design notes not found in the standalone manufacturer datasheet, enabling faster component selection.
Drop-in alternatives for PIC16F18877-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 PIC16F18877-I/P (same form factor and footprint) — differing in ADC, Mounting Type, Package, Communication, EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18876-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18875-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18857-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18877-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F46K22-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1847-I/P
✅ Drop-In✓ In Stock
$1.65 / Unit
View Datasheet →ATMEGA328P-PU
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →PIC16F18877-I/P Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC enhanced mid-range |
| CPU Frequency | 32 MHz |
| Program Memory | 56 KB Flash (32K x 14 words) |
| SRAM | 4 KB |
| EEPROM | 256 B |
| Package | 40-pin PDIP |
| Operating Voltage | 1.8 V to 5.5 V |
| Temperature Range | -40 °C to +85 °C (Industrial) |
| ADC | 10-bit, 14 channels |
| I/O Pins | 36 (approx., per package) |
| Communication | UART, I2C, SPI |
| Timers | Multiple 8/16-bit |
| CIP Peripherals | CLC, CWG, NCO, CRC/SCAN, HLT |
| Functional Safety | FuSa documentation package |
| Mounting Type | Through-Hole (DIP) |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Instruction Word | 14-bit |
PIC16F18877-I/P Pin Configuration
| Pin 1 | MCLR — Master Clear (reset, active low) |
| Pin 2 | RA0 — Port A bit 0 / analog input |
| Pin 3 | RA1 — Port A bit 1 / analog input |
| Pin 4 | RA2 — Port A bit 2 / analog input |
| Pin 5 | RA3 — Port A bit 3 / analog input |
| Pin 6 | RA4 — Port A bit 4 |
| Pin 7 | RA5 — Port A bit 5 |
| Pin 8 | RA6 — Port A bit 6 |
| Pin 9 | RA7 — Port A bit 7 |
| Pin 10 | RB0 — Port B bit 0 / analog input |
| Pin 11 | RB1 — Port B bit 1 / analog input |
| Pin 12 | RB2 — Port B bit 2 / analog input |
| Pin 13 | RB3 — Port B bit 3 / analog input |
| Pin 14 | RB4 — Port B bit 4 |
| Pin 15 | RB5 — Port B bit 5 |
| Pin 16 | RB6 — Port B bit 6 / ICD clock |
| Pin 17 | RB7 — Port B bit 7 / ICD data |
| Pin 18 | VDD — Positive supply voltage |
| Pin 19 | VSS — Ground reference |
| Pin 20 | RC0 — Port C bit 0 |
| Pin 21 | RC1 — Port C bit 1 |
| Pin 22 | RC2 — Port C bit 2 |
| Pin 23 | RC3 — Port C bit 3 |
| Pin 24 | RC4 — Port C bit 4 |
| Pin 25 | RC5 — Port C bit 5 |
| Pin 26 | RC6 — Port C bit 6 / TX |
| Pin 27 | RC7 — Port C bit 7 / RX |
| 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 |
| Pin 40 | VDD — Positive supply voltage (second pair) |
Typical Applications
PIC16F18877-I/P is suitable for 7 applications: Battery-Powered IoT Sensor Nodes, Wearable Health & Fitness Devices, HVAC & Building Automation Controllers, Industrial Sensor Conditioning & IO-Link, Consumer White Goods & Appliances, Low-Power Remote Controls & RF Key Fobs, Automotive Body & Interior Modules (non-safety).
Battery-Powered IoT Sensor Nodes
The PIC16F18877-I/P's eXtreme Low Power (XLP) nanoWatt sleep modes and 56KB Flash support firmware-rich sensor-fusion IoT endpoints. With peripheral pin select and Core Independent Peripherals (CIP), the CPU can remain asleep while CLC/NCO offload signal conditioning, achieving microamp sleep current. Operating at 32MHz and 1.8V-5.5V lets it run directly from a 3.6V lithium primary cell.
Recommended
Wearable Health & Fitness Devices
The PIC16F18877-I/P fits wearable designs due to its 4KB RAM buffering sensor data and 14-channel 10-bit ADC for biosignal acquisition (heart rate, SpO2, motion). Its CWG drives haptic-feedback PWM, and CLC implements custom wake-up logic without CPU intervention. The 40-PDIP is suited for prototype through-hole wearable boards, simplifying rework in lab testing.
Recommended
HVAC & Building Automation Controllers
The PIC16F18877-I/P handles HVAC control loops with its 14-channel ADC reading multiple temperature/humidity sensors and PWM driving damper actuators. The HLT and CRC/SCAN Functional Safety (FuSa) peripherals help meet IEC 61508 SIL-aware requirements for heating/cooling safety. Multiple UART/SPI ports drive Modbus or BACnet transceivers in industrial HVAC systems.
Recommended
Industrial Sensor Conditioning & IO-Link
In industrial 4-20mA loop-powered sensors, the PIC16F18877-I/P conditions analog signals via its 10-bit ADC and drives SPI IO-Link transceivers. Its CIP block (CLC, CWG, NCO) offloads pulse counting for flowmeters and PWM for proportional valves, allowing deterministic response without software latency. -40°C to +85°C industrial grade fits factory floor environments.
Recommended
Consumer White Goods & Appliances
The PIC16F18877-I/P powers appliance control boards (washing machines, dishwashers, ovens) with its high-pin-count 40-PDIP enabling direct keypad, LCD, and motor-driver interfacing. The CRC/SCAN peripheral runs memory integrity checks to satisfy consumer-safety regulations. Industrial -40°C to +85°C operation tolerates the heat of enclosed appliance cabinets.
Recommended
Low-Power Remote Controls & RF Key Fobs
The PIC16F18877-I/P's nanoWatt XLP sleep is ideal for coin-cell powered RF key fobs and remote controls, achieving multi-year battery life. The CWG generates carrier waveforms and the NCO synthesizes frequency-shift keying, offloading RF encoding from the CPU. UART interfaces directly to sub-GHz transceivers like the MRF89XA.
Recommended
Automotive Body & Interior Modules (non-safety)
The PIC16F18877-I/P drives non-safety automotive body modules such as interior lighting, seat controllers, and mirror adjusters via its CWG/PWM outputs and 14-channel ADC reading switches/potentiometers. Functional Safety documentation assists with FMEA review. Note: For AEC-Q100 qualified parts, consider PIC16F18877-E/P or automotive-grade equivalents.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18877-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18876-I/P | PIC16F18875-I/P | PIC16F18857-I/P | PIC16LF18877-I/P | PIC18F46K22-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 |
| Core | 8-bit PIC16 enhanced mid-range | 8-bit PIC16 enhanced mid-range | 8-bit PIC16 enhanced mid-range | 8-bit PIC16 enhanced mid-range | 8-bit PIC16 enhanced mid-range | 8-bit PIC18 advanced |
| CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 64 MHz |
| Flash | 56 KB | 56 KB | 32 KB (-43%) | 28 KB (-50%) | 56 KB | 64 KB (+14%) |
| RAM | 4 KB | 4 KB | 2 KB (-50%) | 2 KB (-50%) | 4 KB | 3.8 KB |
| Operating Voltage | 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 (lower) | 1.8 V to 5.5 V |
| ADC | 10-bit, 14 channels | 10-bit, 14 channels | 10-bit, 14 channels | 10-bit, 24 channels | 10-bit, 14 channels | 10-bit, 28 channels |
| XLP / Low Power | Yes (nanoWatt XLP) | Yes | Yes | Yes | Yes (extended) | Yes |
| Functional Safety (FuSa) | Yes (HLT, CRC/SCAN) | Yes | Yes | Yes | Yes | Limited |
Key Differentiators
- Full Functional Safety (FuSa) documentation with HLT and CRC/SCAN (vs PIC18F46K22-I/P)
- Richest CIP block in the 40-PDIP PIC16 family (vs PIC16F18875-I/P)
- Highest ADC channel count in the 40-PDIP PIC16 lineup (vs PIC16F18857-I/P)
- Lower-power F variant for tighter Iq budget (vs PIC16LF18877-I/P)
Design Notes
Place a 0.1µF ceramic decoupling capacitor adjacent to each VDD pin (pins 18 and 40 on the 40-PDIP) and a bulk 10µF tantalum or ceramic capacitor at the regulator output. For battery-powered designs, route VDD through a low-Iq LDO such as MCP1700 (1.6µA Iq) to maximize XLP sleep performance. Estimated: at 32MHz active current ≈ 5 mA; with 0.1µF local decoupling, ripple remains below 50 mV.
Configure all unused I/O pins as outputs and drive them low to minimize sleep-mode leakage. Do not float the MCLR pin; tie it to VDD through a 10kΩ resistor to prevent spurious resets. When using the internal oscillator, verify OSCCON settings match FCY=32MHz requirements; an external 32.768kHz crystal can be used on SOSCO/SOSCI for RTC accuracy.
Keep the trace between the ICSPDAT/ICSPCLK pins (RB7/RB6) and the programming header shorter than 100mm to ensure reliable in-circuit programming. Place the ICSP header at the edge of the board with a 100Ω series resistor on each line for EMI suppression. For PDIP through-hole designs, allow generous via stitching around the chip to provide thermal and signal return paths.
When using SPI at high speeds (>8MHz), add a 33Ω series resistor on SCK and MOSI lines near the MCU to dampen reflections. Keep analog input traces short and route them away from PWM outputs (e.g., CCP1) to avoid coupling. The 10-bit ADC achieves best accuracy with an input bandwidth below the Nyquist rate (~4kHz at 32MHz); add an external RC filter for noisy sensors.
Compliance Information
RoHS and lead-free per Microchip product page. Industrial temperature grade -40°C to +85°C. Not AEC-Q100 qualified; choose -E/P extended or -VAO automotive variants for automotive applications.
