M93C86, M93C76, M93C66, M93C56, M93C46
Instructions
5.6
Write All
As with the Erase All Memory (ERAL) instruction, the format of the Write All Memory with
same Data (WRAL) instruction requires that a dummy address be provided. As with the
Write Data to Memory (WRITE) instruction, the format of the Write All Memory with same
Data (WRAL) instruction requires that an 8-bit data byte, or 16-bit data word, be provided.
This value is written to all the addresses of the memory device. The completion of the cycle
can be detected by monitoring the READY/BUSY line, as described next.
Figure 6. WRAL sequence
WRITE
S
ALL
D
1 0 0 0 1 Xn X0 Dn
CHECK
STATUS
D0
Q
ADDR
OP
CODE
DATA IN
1. For the meanings of Xn and Dn, please see Table 5., Table 6. and Table 7..
BUSY
READY
AI00880C
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