Aeroflex Circuit Technology

SCD1663 REV A 4/28/98 Plainview NY (516) 694-6700

6

AC Waveforms for Flash Memory Read Operations

Output Valid

High Z

High Z

Outputs

OE

FWE

FCE

Addresses

Addresses Stable

FWE

OE

FCE

Data

Addresses

5.0V

5555H

PA

Data Polling

PA

D7

PD

AOH

Write/Erase/Program

Operation for Flash Memory, FWE Controlled

Notes:

1. PA is the address of the memory location to be programmed.

2. PD is the data to be programmed at byte address.

3. D7 is the 0utput of the complement of the data written to the deviced.

4. Dout is the output of the data written to the device.

5. Figure indicates last two bus cycles of four bus cycle sequence.