PIC16LF877-04I/P - 8-bit MCU, 14KB Flash, 4MHz, 40-PDIP | Microchip
MPN: PIC16LF877-04I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.04 | $11.04 |
| 10 | $9.93 | $99.30 |
| 100 | $8.83 | $883.00 |
| 500 | $7.73 | $3,865.00 |
| 1,000 | $6.63 | $6,630.00 |
PIC16LF877-04I/P Overview
An 8-bit microcontroller (MCU) is a single-chip processor that integrates a CPU core, program memory, data memory, and programmable I/O peripherals. The PIC16F family, manufactured by Microchip Technology, uses a Harvard-architecture RISC core with 35 single-word instructions and a 14-bit instruction word, sitting in the product hierarchy as MCU -> 8-bit microcontroller -> embedded controller -> semiconductor IC. PIC MCUs are widely used in embedded systems for their deterministic instruction timing, low power consumption, and ease of programming via the ICSP (In-Circuit Serial Programming) interface.
Key features include 33 digital I/O pins organized across multiple ports (PORTA-PORTE), an 8-channel 10-bit ADC, two 8-bit and one 16-bit timers, a USART module for serial communication, an MSSP module supporting SPI and I2C, and a parallel slave port for external memory expansion. The PIC16LF877-04I/P integrates a Watchdog Timer with its own on-chip RC oscillator for reliable operation, plus Brown-out Reset (BOR) circuitry to protect against low-voltage corruption of flash memory. The 40-pin PDIP footprint allows drop-in compatibility with standard 0.1-inch pitch through-hole prototyping and legacy board designs.
The architecture implements a 14-bit instruction set with 200 ns instruction execution time at 4 MHz, making code timing fully deterministic and easy to predict. The 10-bit ADC supports up to 8 analog input channels with successive approximation conversion, while the MSSP peripheral handles both SPI master/slave and I2C master/slave protocols, enabling sensor interfacing and EEPROM/RTC communication. Capture/Compare/PWM modules support motor control, signal timing, and pulse-width modulation tasks.
Typical applications include industrial control systems, sensor interface modules, HVAC controllers, motor drive BLDC and stepper interfaces, data acquisition devices, and educational platforms. Its wide voltage range and industrial temperature grade make it suitable for factory automation and instrumentation requiring robust operation.
When designing with the PIC16LF877-04I/P, observe the maximum oscillator frequency limit of 4 MHz when using the LF (low-voltage) variant. Place a 0.1 uF decoupling capacitor close to VDD, and ensure the MCLR pin is pulled high through a 10 kohm resistor for normal operation. Programming is performed via ICSP using two pins (RB6/RB7) without removing the MCU from the board.
This page synthesizes distributor pricing, drop-in package-compatible alternatives, parametric comparisons, and practical design notes not found in the standalone manufacturer datasheet, providing actionable engineering reference beyond raw spec repetition.
Drop-in alternatives for PIC16LF877-04I/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 PIC16LF877-04I/P (same form factor and footprint) — differing in Core Architecture, Package, Operating Temperature, ADC, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF877-04I/L
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.35 / Unit
View Datasheet →PIC16LF877-04/P
✅ Drop-In✓ In Stock
$5.45 / Unit
View Datasheet →PIC16LF877-04/PT
✅ Drop-In✓ In Stock
$6.2 / Unit
View Datasheet →PIC16LF877-04I/PT
✅ Drop-In✓ In Stock
$6.05 / Unit
View Datasheet →PIC16F877-04I/P
✅ Drop-In✓ In Stock
$4.95 / Unit
View Datasheet →PIC16F877-04E/PQ
✅ Drop-In✓ In Stock
$5.72 / Unit
View Datasheet →PIC16LF877-04I/P Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16F 8-bit RISC (Harvard) |
| Maximum CPU Frequency | 4 MHz |
| Program Memory Type | Flash |
| Program Memory Size | 14 KB (8K x 14 words) |
| RAM Size | 368 bytes |
| EEPROM Size | 256 bytes |
| Supply Voltage Range | 2.0 V to 5.5 V |
| Operating Temperature Range | -40C to +85C (Industrial, I grade) |
| Number of I/O Pins | 33 |
| ADC | 10-bit, 8 channels |
| Timers | 2 x 8-bit, 1 x 16-bit |
| Communication Peripherals | USART, MSSP (SPI/I2C), PSP |
| Package Type | 40-pin PDIP (Plastic DIP, Through-Hole) |
| Package Dimensions | 52.3 mm x 13.97 mm body, 2.54 mm pitch |
| Instruction Execution Time | 200 ns at 4 MHz |
| Watchdog Timer | Yes (with dedicated RC oscillator) |
| Brown-out Reset (BOR) | Yes |
| ICSP Programming | In-Circuit Serial Programming via RB6/RB7 |
| RoHS Status | Compliant |
| Mounting Type | Through-Hole |
PIC16LF877-04I/P Pin Configuration
| Pin 1 | MCLR/VPP — Master Clear (Reset) input / Programming voltage input |
| Pin 2 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| Pin 4 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / ADC VREF- |
| Pin 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / ADC VREF+ |
| Pin 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI Slave Select |
| Pin 8 | RE0/RD/AN5 — PORTE bit 0 / Parallel slave port read / AN5 |
| Pin 9 | RE1/WR/AN6 — PORTE bit 1 / Parallel slave port write / AN6 |
| Pin 10 | RE2/CS/AN7 — PORTE bit 2 / Parallel slave port chip select / AN7 |
| Pin 11 | VDD — Positive supply voltage (2.0V-5.5V) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | OSC1/CLKI — Oscillator crystal input / External clock input |
| Pin 14 | OSC2/CLKO — Oscillator crystal output / Clock output |
| Pin 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| Pin 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Pin 17 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Pin 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin 19 | RD0/PSP0 — PORTD bit 0 / Parallel slave port data bit 0 |
| Pin 20 | RD1/PSP1 — PORTD bit 1 / Parallel slave port data bit 1 |
| Pin 21 | RD2/PSP2 — PORTD bit 2 / Parallel slave port data bit 2 |
| Pin 22 | RD3/PSP3 — PORTD bit 3 / Parallel slave port data bit 3 |
| Pin 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 25 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| Pin 26 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| Pin 27 | RD4/PSP4 — PORTD bit 4 / Parallel slave port data bit 4 |
| Pin 28 | RD5/PSP5 — PORTD bit 5 / Parallel slave port data bit 5 |
| Pin 29 | RD6/PSP6 — PORTD bit 6 / Parallel slave port data bit 6 |
| Pin 30 | RD7/PSP7 — PORTD bit 7 / Parallel slave port data bit 7 |
| Pin 31 | VSS — Ground reference (second) |
| Pin 32 | VDD — Positive supply voltage (second) |
| Pin 33 | RB0/INT — PORTB bit 0 / External interrupt input |
| Pin 34 | RB1 — PORTB bit 1 |
| Pin 35 | RB2 — PORTB bit 2 |
| Pin 36 | RB3/PGM — PORTB bit 3 / ICSP programming data |
| Pin 37 | RB4 — PORTB bit 4 |
| Pin 38 | RB5 — PORTB bit 5 |
| Pin 39 | RB6/PGC — PORTB bit 6 / ICSP programming clock |
| Pin 40 | RB7/PGD — PORTB bit 7 / ICSP programming data |
Typical Applications
PIC16LF877-04I/P is suitable for 6 applications: Industrial Process Control Systems, HVAC Environmental Controllers, Motor Drive BLDC and Stepper Controllers, Data Acquisition and Sensor Interface Modules, Educational Microcontroller Training Platforms, Battery-Powered Remote Sensor Nodes.
Industrial Process Control Systems
The PIC16LF877-04I/P is well-suited for industrial process control systems that monitor analog sensor inputs and drive actuator outputs. The 8-channel 10-bit ADC samples signals from temperature, pressure, and flow sensors at up to ~50 ksps aggregate, while 33 GPIO pins directly drive relays, solenoids, and indicator LEDs without external drivers. The 2.0V to 5.5V supply range accommodates 24V industrial bus systems via simple LDO regulation, and the industrial -40C to +85C temperature grade ensures reliable operation in factory cabinets. The USART and MSSP (SPI/I2C) peripherals communicate with HMI displays and remote I/O modules. Built-in Brown-out Reset (BOR) prevents erroneous actuator actuation during supply brown-outs.
Recommended
HVAC Environmental Controllers
The PIC16LF877-04I/P powers HVAC controllers that regulate heating, ventilation, and air-conditioning equipment. The 14 KB flash accommodates full control algorithm code including PID loops, scheduling, and user interface logic. The MSSP peripheral reads temperature/humidity sensors over I2C, while the 10-bit ADC samples thermistor inputs with 10 mV resolution adequate for setpoint control. Capture/Compare/PWM modules generate triac firing pulses for heater power regulation. The industrial temperature grade (-40C to +85C) and 2.0V-5.5V operating range support outdoor installation in rooftop units. Brown-out Reset protects programmed schedules from low-voltage corruption during power glitches.
Recommended
Motor Drive BLDC and Stepper Controllers
The PIC16LF877-04I/P controls BLDC and stepper motor systems in robotics, CNC auxiliary axes, and small appliance drives. The Capture/Compare/PWM module generates up to 10-bit PWM with programmable dead-band control, while the 16-bit timer provides precise commutation timing at 4 MHz CPU. The MSSP SPI port communicates with motor-driver ICs such as the DRV8313 or L6234, and USART interfaces with absolute encoders. The 14 KB flash stores trapezoidal and sinusoidal commutation tables. With 33 I/O pins, three Hall-sensor inputs, three-phase PWM outputs, and brake/Enable signals are handled without external logic. Industrial temperature grade supports motor housing environments.
Recommended
Data Acquisition and Sensor Interface Modules
The PIC16LF877-04I/P forms the core of multi-channel data acquisition systems used in laboratory instruments and field monitoring. The 8-channel 10-bit ADC acquires analog sensor data from thermocouples, strain gauges, and 4-20 mA loop transmitters with selectable VREF for ratiometric measurements. The 256-byte EEPROM stores calibration constants, while 368 bytes of RAM buffer acquired samples before transmission. USART outputs data to PC or remote terminal at 115.2 kbps. The MSSP I2C port interfaces with external 24-bit ADC modules such as MCP3424 for higher-resolution channels. Industrial -40C to +85C operation supports outdoor and cold-storage installations.
Recommended
Educational Microcontroller Training Platforms
The PIC16LF877-04I/P is widely used in universities, technical schools, and hobbyist training platforms for teaching embedded systems programming. The 40-pin PDIP through-hole package allows students to insert the chip in standard solderless breadboards without special tools. The 14 KB flash accommodates full firmware development including assembly language, C, and BASIC (PICBASIC PRO) examples. The ICSP interface enables in-circuit programming and debugging using low-cost tools like the PICkit 2/3. Industrial temperature operation, deterministic 200 ns instruction timing at 4 MHz, and 35 single-word instructions make it an ideal teaching vehicle for RISC architecture fundamentals.
Recommended
Battery-Powered Remote Sensor Nodes
The PIC16LF877-04I/P suits battery-powered wireless sensor nodes in remote monitoring applications. The 2.0V to 5.5V LF operating range allows direct operation from a single 3.6V lithium-thionyl chloride cell or 2xAA alkaline cells, eliminating boost converters that waste quiescent current. Sleep current drops below 1 uA with the Watchdog Timer active, allowing years of battery life on periodic sensor-read duty cycles. The MSSP SPI interface connects to low-power radio modules such as the MRF24J40 or LoRa transceivers, while the 10-bit ADC reads battery voltage and sensor inputs. Industrial temperature grade ensures operation in cold outdoor environments.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF877-04I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF877-04/P | PIC16F877-04I/P | PIC16F877-04E/P | PIC16LF877-04I/L |
|---|---|---|---|---|---|
| Package | 40-pin PDIP (P) | 40-pin PDIP (P) | 40-pin PDIP (P) | 40-pin PDIP (P) | 44-pin PLCC (L) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum CPU Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Operating Voltage Range | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) | 4.0 V to 5.5 V (F) | 4.0 V to 5.5 V (F) | 2.0 V to 5.5 V (LF) |
| Program Memory (Flash) | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB |
| RAM | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 368 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Temperature Grade | Industrial -40C to +85C | Commercial 0C to +70C | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C |
| Pin Count / Mounting | 40-pin Through-Hole DIP | 40-pin Through-Hole DIP | 40-pin Through-Hole DIP | 40-pin Through-Hole DIP | 44-pin SMD PLCC |
Key Differentiators
- Low-voltage 2.0V-5.5V operating range (vs PIC16F877-04I/P)
- Industrial -40C to +85C temperature grade (vs PIC16LF877-04/P)
- Through-hole 40-pin PDIP for prototyping and legacy designs (vs PIC16LF877-04I/L (44-PLCC))
- Family compatibility with PIC16F877 (vs PIC16F877A-I/P (newer revision))
Design Notes
Estimated: Place a 0.1 uF decoupling ceramic capacitor within 5 mm of each VDD pin (pins 11 and 32), with a 10 uF bulk tantalum or aluminum capacitor near the supply entry point. The PIC16LF877-04I/P draws approximately 15 mA active at 4 MHz and 5.5V and drops below 1 uA in sleep mode. For battery designs, verify that low-dropout regulation does not waste more than 50 uA quiescent current - choose an LDO such as MCP1700 rather than a switching converter for low-duty-cycle sensor applications.
The 04 speed grade limits the maximum CPU clock to 4 MHz. For crystal oscillator configurations, choose a fundamental-mode AT-cut crystal with 20 pF load capacitance, and place the crystal within 10 mm of OSC1 (pin 13) and OSC2 (pin 14) pins. For RC oscillator low-cost designs, use a 100 kohm resistor at OSC1 and 22 pF capacitor to ground - frequency tolerance will be ~5% but is acceptable for non-timing-critical applications.
The 40-pin PDIP package uses 2.54 mm (0.1-inch) pin pitch. Allocate a minimum board area of approximately 55 mm x 16 mm for the IC and breakout pads. For prototyping, use a standard solderless breadboard that accommodates 0.1-inch DIP. For production PCB layout, place decoupling capacitors on the VDD/VSS pin pairs before routing signals to minimize ground bounce. MCLR (pin 1) must be pulled to VDD through a 10 kohm resistor with a 100 nF capacitor to ground for noise immunity - never leave MCLR floating.
Do not confuse the LF (low-voltage 2.0V-5.5V) variant with the F-series (4.0V-5.5V) when operating from a 3.3V supply - the F-variant will not start reliably below 4.0V. The PIC16LF877-04I/P also shares the 40-pin PDIP footprint with the PIC16F877 but the part number on the device should always be verified before firmware development. New designs should evaluate the PIC16F887 as the recommended migration path with more peripherals and lower cost.
Compliance Information
RoHS compliant per Microchip product environmental documentation. Industrial temperature grade (I suffix) covers -40C to +85C. Not AEC-Q100 qualified for automotive; AEC-Q100 variants use a different part number suffix. Lead-free and halogen-free per Microchip policy.
