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Rev. 1.0, 07/01, page 100 of 372
A15–A0
I/O7–I/O0
t
acc
t
acc
t
oh
t
oh
Address stableAddress stable
Figure 7-8 CE and OE Enable State Read Timing Waveforms
A15–A0
I/O7–I/O0
t
acc
t
ce
t
oe
t
oe
t
ce
t
acc
t
oh
t
df
t
df
t
oh
Address stableAddress stable
Figure 7-9 CE and OE Clock System Read Timing Waveforms
7.6.4 Auto-Program Mode
1. When reprogramming previously programmed addresses, perform auto-erasing before auto-
programming.
2. Perform auto-programming once only on the same address block. It is not possible to program
an address block that has already been programmed.
3. In auto-program mode, 128 bytes are programmed simultaneously. This should be carried out
by executing 128 consecutive byte transfers. A 128-byte data transfer is necessary even when
programming fewer than 128 bytes. In this case, H'FF data must be written to the extra
addresses.
4. The lower 7 bits of the transfer address must be low. If a value other than an effective address
is input, processing will switch to a memory write operation but a write error will be flagged.
5. Memory address transfer is performed in the second cycle (figure 7-10). Do not perform
transfer after the third cycle.
6. Do not perform a command write during a programming operation.