IS66/67WVR4M8ALL/BLL

Integrated Silicon Solution, Inc.- www.issi.com

11

Rev. A2

07/08/2024

4.5 READ/WRITE TERMINATION

All reads and writes must be followed immediately by a clock pulse of CE# HIGH in order to terminate the read

and writes, and set the device into standby status.

CE# must transition to HIGH after the tHD (Clock rising edge to CE# HIGH).

Figure 4.1 Command Termination (Standard Device)

CE#

CLK

WL Terminated

Data In/Out

SI/SO/SIO

tHD

As for optional device, one more clock is required to terminate operation with CE# not active setup time and hold

time.

Call factory for optional device.

Figure 4.2 Command Termination (Optional Device)

CE#

CLK

WL Terminated

Data In/Out

SI/SO/SIO

Clocking Optional