Renesas H8S/2318 series, Hardware Manual

Page: 759 / 1121

Rev. 5.00, 12/03, page 729 of 1088
Table 17-59 Return Codes of Status-Read Mode
Pin Name I/O
7
I/O
6
I/O
5
I/O
4
I/O
3
I/O
2
I/O
1
I/O
0
Attribute Normal end
indicator Command
error Programming
error Erase error — — Programming
or erase count
exceeded Invalid
address
error
Initial value 0 0 0 0 0 0 0 0
Indication Normal
end: 0
Abnormal
end: 1
Command
error: 1
Otherwise:
0
Programming
error: 1
Otherwise: 0
Erase
error:1
Otherwise:
0
— — Count
exceeded: 1
Otherwise: 0
Invalid
address
error: 1
Otherwise:
0
Note: I/O
3
and I/O
2
are undefined pins.
17.28.7 Status Polling
(1) The I/O
7
status-polling output is a flag that indicates the operating status in auto-program or
auto-erase mode.
(2) The I/O
6
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 In Progress Abnormal End — Normal End
I/O
7
0 1 0 1
I/O
6
0 0 1 1
I/O
0
to I/O
5
0 0 0 0
17.28.8 Time Taken in Transition to PROM Mode
Until oscillation has stabilized and while PROM mode is being set up, the LSI is unable to accept
commands. After the PROM-mode setup time has elapsed, the LSI enters memory-read mode. See
section 17.29.2, AC Characteristics and Timing in PROM Mode.
17.28.9 Notes on Using PROM Mode
(1) When programming addresses which have previously been programmed, apply auto-erasing
before auto-programming.
(2) When using PROM mode to program a chip that has been programmed/erased in an on-board
programming mode, auto-erasing before auto-programming is recommended.