20.11.7 Status Polling; 20.11.8 Programmer Mode Transition Time - Hitachi H8S/2646 Hardware Manual

Table 20-18 Status Read Mode Return Commands
Pin Name I/O7
Attribute Normal
end
decision
Initial value 0
Indications Normal
end: 0
Abnormal
end: 1
Note: I/O2 and I/O3 are undefined.

20.11.7 Status Polling

1. The I/O7 status polling flag indicates the operating status in auto-program/auto-erase mode.
2. The I/O6 status polling flag indicates a normal or abnormal end in auto-program/auto-erase
mode.
Table 20-19 Status Polling Output Truth Table
During Internal
Pin Name Operation
I/O7 0
I/O6 0
I/O0–I/O5 0

20.11.8 Programmer Mode Transition Time

Commands cannot be accepted during the oscillation stabilization period or the programmer mode
setup period. After the programmer mode setup time, a transition is made to memory read mode.
Table 20-20 Stipulated Transition Times to Command Wait State
Item
Standby release (oscillation
stabilization time)
Programmer mode setup time
V hold time
CC
I/O6 I/O5
Command Program-
error ming error
0 0
Command Program-
error: 1 ming
error: 1
Otherwise: 0
Otherwise: 0
Abnormal End
1
0
0
Symbol
t
osc1
t
bmv
t
dwn
I/O4 I/O3 I/O2
Erase — —
error
0 0 0
Erasing — —
error: 1
Otherwise: 0
—
0
1
0
Min Max
30 —
10 —
0 —
I/O1 I/O0
Program- Effective
ming or address error
erase count
exceeded
0 0
Count Effective
exceeded: 1 address
error: 1
Otherwise: 0
Otherwise: 0
Normal End
1
1
0
Unit
ms
ms
ms
707