PIC18F4685-E/P

Microcontrollers Overview

The PIC18F4685-E/P is an 8-bit microcontroller from the PIC18(L)Fxx80 family, housed in a 40-pin PDIP package. It features 96 KB of Flash program memory and 3,250 bytes (3.25 kB) of data RAM. The device supports a maximum clock frequency of 40 MHz and includes an ECAN module for Controller Area Network communication. It integrates an 11-channel 10-bit ADC, two analog comparators, and standard serial interfaces including EUSART, I2C, and SPI.

Microcontrollers Feature Summary

• Integrated ECAN module supporting CAN 2.0B ACTIVE specification with multiple message buffering modes
• Enhanced Capture/Compare/PWM module providing up to four PWM outputs with auto-shutdown capabilities
• Flexible oscillator structure with internal block and PLL support for frequencies up to 40 MHz
• High-endurance non-volatile memory with 100,000 erase/write cycles for Flash and 1,000,000 for Data EEPROM

Microcontrollers Applications

• Controller Area Network (CAN) bus communication systems
• Industrial control applications requiring robust serial communication
• Embedded motor control using ECCP PWM outputs
• Data acquisition systems utilizing the 10-bit A/D converter

Microcontrollers Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range (-40°C to +125°C) as per Microchip documentation. Confirm the 'P' suffix corresponds to the 40-pin Plastic Dual In-line Package (PDIP). Ensure compatibility with your design voltage requirements, noting that standard 'F' devices operate between 4.2V and 5.5V.

Microcontrollers Selection Notes

Select this component when high-capacity program storage (96 KB) and hardware ECAN support are required in an 8-bit architecture. It is suitable for designs needing multiple PWM channels and analog inputs. Consider the PDIP package only if through-hole mounting is necessary; otherwise, explore QFN or TQFP variants for surface-mount applications.

Microcontrollers Part Context

This part belongs to the PIC18F2682/2685/4682/4685 family, which shares core CPU architecture and peripheral sets. The primary differentiator within this family is the memory size and pin count. The PIC18F4685 represents the high-memory variant with 40 pins, offering more I/O and analog channels compared to the 28-pin PIC18F2685.

Microcontrollers Replacement Considerations

The PIC18F4682 serves as a lower-memory alternative within the same package family. For direct functional substitution with identical specifications but different packaging, consider the PIC18F4685-I/ML or PIC18F4685-E/PT.