PIC18F4685-I/ML

Microcontrollers Overview

The PIC18F4685-I/ML is an 8-bit microcontroller from the PIC18(L)F468x family, manufactured by Microchip Technology. It features a PIC18 core with 96 kB of Flash program memory and 3.25 kB of data RAM. The device operates at a maximum clock frequency of 40 MHz and includes 36 I/O lines across five ports. Key peripherals include an ECAN module, a 10-bit ADC with 11 channels, MSSP (SPI/I2C), and Enhanced USART. It utilizes a QFN-44 package and supports a supply voltage range of 4.5 V to 5.5 V.

Microcontrollers Feature Summary

• Integrated ECAN module supporting CAN 2.0B specification with flexible message buffering and filtering capabilities.
• nanoWatt technology enabling multiple power-managed modes including Idle and Sleep for reduced consumption.
• Flexible oscillator structure with internal block, PLL, and external options for robust clock management.
• High-endurance Enhanced Flash and Data EEPROM memory with self-programmability under software control.

Microcontrollers Applications

• Industrial communication systems requiring CAN bus connectivity
• Battery-powered embedded devices utilizing low-power modes
• Automotive applications compliant with CAN protocols
• General-purpose control systems needing high-performance 8-bit processing

Microcontrollers Procurement Notes

Verify that the ordering suffix 'I' corresponds to the industrial temperature range (-40°C to +85°C) and 'ML' indicates the QFN-44 package. Confirm RoHS compliance status through official Microchip documentation or distributor specifications before finalizing procurement orders.

Microcontrollers Selection Notes

Select this component when 96 kB of program memory and integrated ECAN functionality are required within a compact QFN-44 footprint. Ensure the application voltage aligns with the standard 4.5V to 5.5V operating range; consider the LF variant if lower voltage operation down to 2.0V is necessary.

Microcontrollers Part Context

This part belongs to the PIC18F2682/2685/4682/4685 family of enhanced flash microcontrollers. It shares architectural similarities with the PIC18F4682 but offers increased program memory capacity. The device is designed for applications balancing computational performance with power efficiency and advanced peripheral integration.

Microcontrollers Replacement Considerations

PIC18F4682-I/ML: Identical pinout and peripherals but with 80 kB Flash memory instead of 96 kB.

Microcontrollers FAQ

Does the PIC18F4685 support the Extended Instruction Set?

Yes, the device provides an optional extension to the standard PIC18 instruction set, adding eight new instructions and Indexed Literal Offset Addressing mode.

What is the maximum message bit rate for the ECAN module?

The ECAN module supports message bit rates up to 1 Mbps.