DocID4997 Rev 13

15/33

M93C86xx M93C76xx M93C66xx M93C56xx M93C46xx

Instructions

5.2.3

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 5. WRAL sequence

1. For the meanings of Xn and Dn, please see Table 4, Table 5 and Table 6.

AI00880C

S

WRITE

ALL

DATA IN

D

Q

ADDR

OP

CODE

Dn

D0

BUSY

READY

CHECK

STATUS

1

0 0

0

1 Xn X0