We are looking to replace the Cypress CY7C4255V with the SN74V263. One issue that has come up is the retransmit pulse in standard mode. Fig 11 of data sheet shows that you need to wait until EF goes high before bringing REN low. Our current firmware does not use the EF signal but instead counts RCLK cycles. What is the maximum time for EF to return high after RT goes high?
We would also like some assistance in mapping the SN74V263 pins to the CY7C4255V functions as the TI part has many more features. Is there a TI resource to help?
Thanks,
Tom