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Data and address bus on 52pin uPSD3234A40

san bcl

I'm using uPSD3234A40 (52pin TQFP) for my ckt. This chip does not have P0, P2, PA ports. I would like to implement data and address bus using the PLD logic. Is it possible?

The current board is with 8032 and PSD813 with address and data bus used to map display. Can I use the same firmware with the new board with uPSD3234A40-T6?

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  • 0 in reply to Drew Davis

    I have a current board with 80C32 and PSD813 with memory mapped I/Os like RAM, LCD etc. LCD has the data bus connected to it. What I want is to replace the MCU and PSD devices with a single uPSD IC WITHOUT CHANGING THE FIRMWARE.

    In the uPSD3234A-40 data sheet on page 127, Figure 63, its mentioned that the data bus can be copied to a port. How can that be done? Also refer to Figure 64 ans Table 92.

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  • 0 in reply to Drew Davis

    I have a current board with 80C32 and PSD813 with memory mapped I/Os like RAM, LCD etc. LCD has the data bus connected to it. What I want is to replace the MCU and PSD devices with a single uPSD IC WITHOUT CHANGING THE FIRMWARE.

    In the uPSD3234A-40 data sheet on page 127, Figure 63, its mentioned that the data bus can be copied to a port. How can that be done? Also refer to Figure 64 ans Table 92.

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