3069RF-ZTAT Datasheet, PDF (664/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

18.9.6 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 18.14 lists the return codes of status-read mode.
For the AC characteristics in status-read mode, see section 18.10.2, AC Characteristics and
Timing in Writer Mode.
Table 18.14 Return Codes of Status-Read Mode
Pin Name I/O7
I/O6
I/O5
I/O4
I/O3
Attribute Normal end Command Program- Erase error —
indicator error
ming error
Initial value 0
0
0
0
0
Indication
Normal
end: 0
Abnormal
end: 1
Command Program- Erase
—
error: 1
ming error: 1 error:1
Otherwise: 0 Otherwise: 0 Otherwise:
0
Note: I/O2 and I/O3 are undefined pins.
I/O2
—
0
—
I/O1
I/O0
Programming Invalid
or erase address
count
error
exceeded
0
0
Count
Invalid
exceeded: 1 address
Otherwise: 0 error: 1
Otherwise:
0
18.9.7 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 18.15 Truth Table of Status-Polling Output
Pin Name
I/O7
I/O6
I/O0 to 5
In Progress
0
0
0
Abnormal End —
1
0
0
1
0
0
Normal End
1
1
0
Rev. 5.0, 09/04, page 642 of 978