Toshiba TMP95 chip select signal sequencement modify

Hello,

I am currently working on an old micro controller, the TMP95C64F/265F.

I am currently experiencing a problem with the chip select functionality for accessing external memory. In our case, we also use this functionality to activate flip-flops with the nWR and nCS pins.

The nWR and nCS pins are toggling low (active) before loading the data D0..D15 as an output. We are using nWR and nCS to activate a flip-flop that takes D0 D15 as an input, so this has the effect of copying the wrong data as an output since the copy is done before D0 .. D15 are updated.

Here are the waveforms and timings from the datasheet:


Here is my question: Does anyone know if we can change the sequencing order within the microcontroller? For example by updating D0 D15 first, and toggling nWR or nCS only after the update.

Thanks,
marty