X28HC256_15 Datasheet, PDF (11/19 Pages) Intersil Corporation – 256k, 32k x 8-Bit, 5V, Byte Alterable EEPROM

LAST
WE ^WRITE
CE
OE
V_IH
I/O₇
A₀ TO A₁₄
An
X28HC256
HIGH Z
V_OL
An
An
An
An
An
FIGURE 8. DATA POLLING BUS SEQUENCE
WRITE DATA
WRITES
NO
COMPLETE?
YES
SAVE LAST DATA
AND ADDRESS
READ LAST
ADDRESS
IO₇
NO
COMPARE?
YES
X28HC256
READY
FIGURE 9. DATA POLLING SOFTWARE FLOW
V_OH
X28HC256
READY
An
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FN8108.5
August 27, 2015