32 Megabit (4M x 8-Bit) Flash Memory
29F0408
FIGURE 30. AC WAVEFORMS FOR POWER TRANSITION
READY/BUSY
The device has a R/B output that provides a hardware method of indicating the completion of a page pro-
gram, erase and random read completion. The R/B pin is normally high but transitions to low after program
or erase command is written to the command register or random read is begin after address loading. It
returns to high when the internal controller has finished the operation. The pin is an open-drain driver
thereby allowing two or more R/B outputs to be Or-tied. An appropriate pull-up resister is required for proper
operation and the value may be calculated by following equation.
11.08.02 Rev 2
All data sheets are subject to change without notice 29
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