AK6420AM Datasheet, PDF (7/15 Pages) Asahi Kasei Microsystems – 2K / 4K / 8Kbit Serial CMOS EEPROM

ASAHI KASEI
[AK6420A/40A/80A]
Read
The read instruction is the only instruction which outputs serial data on the DO pin. When the 17th falling
edge of SK is received , the DO pin will come out of high impedance state and shift out the data from D15 first
in descending order which is located at the address specified in the instruction.
The data in the next address can be read sequentially by continuing to provide clock. The address
automatically cycles to the next higher address after the 16bit data shifted out.
AK6420A ^{• •} When the highest address is reached ($7F), the address counter rolls over to
address $00 allowing the read cycle to be continued indefinitely.
AK6440A ^{• •} When the highest address is reached ($FF), the address counter rolls over to
address $00 allowing the read cycle to be continued indefinitely.
AK6480A ^{• •} When the highest address is reached ($1FF), the address counter rolls over to
address $000 allowing the read cycle to be continued indefinitely.
DAS01E-00
-7-
1999/05