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| D12320VF25V Datasheet, PDF (652/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents | |||
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Section 17 ROM
FWE
A18 to A0
CE
OE
WE
I/O7
I/O6
I/O5 to I/O0
tpns tces
Address stable
tceh tnxtc
tpnh
tnxtc
tf
twep
tr
tas
tds
tdh
tah
Data transfer
1 byte to 128 bytes
H'40
twsts tspa
twrite
Programming operation
end identification signal
Programming normal
end identification signal
H'00
Figure 17.26 Auto-Program Mode Timing Waveforms
17.11.6 Auto-Erase Mode
⢠Auto-erase mode supports only total memory erasing.
⢠Do not perform a command write during auto-erasing.
⢠Confirm normal end of auto-erasing by checking I/O6. Alternatively, status read mode can also
be used for this purpose (the I/O7 status polling pin is used to identify the end of an auto-erase
operation).
⢠Status polling I/O6 and I/O7 pin information is retained until the next command write. As long
as the next command write has not been performed, reading is possible by enabling CE and
OE.
Rev.7.00 Feb. 14, 2007 page 618 of 1108
REJ09B0089-0700
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