PIC18F8490T-I/PT

Microcontrollers Overview

The PIC18F8490T-I/PT is an 8-bit microcontroller from the PIC18(L)F8x90 family, manufactured by Microchip Technology. It features a PIC18 core with 16 kB of Flash program memory and 768 bytes of data RAM. The device operates at a maximum clock frequency of 40 MHz and supports a wide voltage range of 2.0 V to 5.5 V. It is housed in an 80-pin TQFP package and provides 66 I/O lines. Key peripherals include a 10-bit ADC with 12 channels, dual CCP modules, MSSP supporting SPI and I2C, and enhanced USARTs.

Microcontrollers Feature Summary

• Integrated LCD driver module capable of driving up to 192 pixels with programmable timing and bias configurations.
• nanoWatt technology enables significant power reduction through alternate run modes, multiple idle states, and low-power peripheral operation.
• Flexible oscillator structure includes internal block, PLL multiplier, and external crystal/RC options for robust clock management.
• Enhanced Addressable USART supports RS-232, RS-485, and LIN 1.2 protocols with auto-wake-up and baud rate detection.

Microcontrollers Applications

• Applications requiring direct LCD panel interfacing with low power consumption
• Battery-powered embedded systems utilizing nanoWatt sleep and idle modes
• Industrial control devices needing LIN bus or RS-485 communication
• General-purpose 8-bit processing tasks with analog signal acquisition

Microcontrollers Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging when ordering. Confirm the '-I' designation corresponds to the industrial temperature range of -40°C to +85°C. Ensure the datasheet revision matches the silicon version required for your design. Check for any end-of-life notices as this component may be subject to obsolescence.

Microcontrollers Selection Notes

Select this model over the PIC18F8390 if 16 kB of Flash memory is required instead of 8 kB. Choose this part over the PIC18LF8490 if standard voltage operation (4.2V-5.5V) is sufficient, though the LF variant offers wider voltage support. Consider the 80-pin TQFP package constraints for PCB layout compared to smaller pin-count alternatives.

Microcontrollers Part Context

This component belongs to the PIC18F6390/6490/8390/8490 family of 64/80-pin Flash microcontrollers. It shares the same core architecture and peripheral set as the PIC18F6490, differing primarily in package size and available I/O pins. The family emphasizes low power and LCD integration within the PIC18 enhanced instruction set environment.

Microcontrollers Replacement Considerations

PIC18F8490-I/PT is the non-tape-and-reel equivalent. PIC18LF8490T-I/PT is the low-voltage variant with identical functionality but extended voltage range. Cross-model migration to larger devices like the PIC18F87J90 requires pinout verification.