Rainbow Electronics AT93C46C - Manual (Page 6)

6
AT93C46C
1122D–SEEPR–08/02
ERASE ALL (ERAL): The Erase All (ERAL) instruction programs every bit in the
memory array to the logic “1” state and is primarily used for testing purposes. The DO
pin outputs the READY/BUSY status of the part if CS is brought high after being kept
low for a minimum of 250 ns (t
CS
). The ERAL instruction is valid only at V
CC
= 5.0V
±
10%.
WRITE ALL (WRAL): The Write All (WRAL) instruction programs all memory loca-
tions with the data patterns specified in the instruction. The DO pin outputs the
READY/BUSY status of the part if CS is brought high after being kept low for a minimum
of 250 ns (t
CS
). The WRAL instruction is valid only at V
CC
= 5.0V
± 10%.
ERASE/WRITE DISABLE (EWDS): To protect against accidental data disturb, the
Erase/Write Disable (EWDS) instruction disables all programming modes and should be
executed after all programming operations. The operation of the READ instruction is
independent of both the EWEN and EWDS instructions and can be executed at any
time.