D12320VF25V Datasheet, PDF (786/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 17 ROM
17.28.6 Status-Read Mode
(1) Status-read mode is used to determine the type of an abnormal termination. Use this mode
when automatic programming or automatic erasure ends abnormally.
(2) The return code is retained until writing of a command that selects a mode other than status-
read mode.
Table 17.59 lists the return codes of status-read mode. For the AC characteristics in status-read
mode, see section 17.29.2, AC Characteristics and Timing in PROM Mode.
Table 17.59 Return Codes of Status-Read Mode
Pin Name I/O7
I/O6
I/O5
I/O4
I/O3 I/O2 I/O1
I/O0
Attribute Normal end Command Programming Erase error —
—
Programming Invalid
indicator error
error
or erase count address
exceeded
error
Initial value 0
0
0
0
0
0
0
0
Indication Normal Command Programming Erase
—
—
Count
Invalid
end: 0
error: 1
error: 1
error:1
exceeded: 1 address
Abnormal Otherwise: 0 Otherwise: 0 Otherwise: 0
Otherwise: 0 ^{error: 1}
end: 1
Otherwise:
0
Note: I/O3 and I/O2 are undefined pins.
17.28.7 Status Polling
(1) The I/O₇ status-polling output is a flag that indicates the operating status in auto-program or
auto-erase mode.
(2) The I/O₆ status-polling output is a flag that indicates normal/abnormal end of auto-program or
auto-erase mode.
Table 17.60 Truth Table of Status-Polling Output
Pin Name
I/O7
I/O6
I/O0 to I/O5
In Progress
0
0
0
Abnormal End —
1
0
0
1
0
0
Normal End
1
1
0
Rev.7.00 Feb. 14, 2007 page 752 of 1108
REJ09B0089-0700