Datasheet

737
CE
A16-0
OE
WE
I/O7-0
t
wep
t
f
t
r
t
oe
t
df
t
ds
t
ds
t
dh
t
dh
t
ces
t
ceh
t
ce
t
ceh
t
nxtc
t
nxtc
t
nxtc
t
ces
H'71
t
wep
t
f
t
r
H'71
Note : I/O2 and I/O3 are undefined.
Figure 22.27 Status Read Mode Timing Waveforms
Table 22.19 Return Commands for the Status Read Mode
Pin Name I/O7 I/O6 I/O5 I/O4 I/O3 I/O2 I/O1 I/O0
Attribute Normal
end
identification
Command
error
Program-
ming error
Erase
error
— — Program-
ming or
erase count
exceeded
Effective
address error
Initial value 0 0 0 0 0 0 0 0
Indications Normal
end: 0
Abnormal
end: 1
Command
Error: 1
Otherwise: 0
Program-
ming
Error: 1
Otherwise: 0
Erasing
Error: 1
Otherwise: 0
— — Count
exceeded: 1
Otherwise: 0
Effective
address
Error: 1
Otherwise: 0
Note: D2 and D3 are undefined at present.
22.11.7 Status Polling
1. I/O7 status polling is a flag that indicates the operating status in auto-program/auto-erase
mode.
2. I/O6 status polling is a flag that indicates a normal or abnormal end in auto-program/auto-erase
mode.