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676
Start
Set EPROM writer to
write/verify mode
(V
CC
= 6.0 V
±
0.25 V,
V
PP
= 12.5 V
±
0.3 V)
Address = 0
n = 0
n + 1
→
n
Data write
(t
PW
= 0.2 ms
±
5%)
Data write
(t
OPW
= 0.2n ms)
Is verify
result OK?
No
Yes
Final
address?
No
Yes
Set EPROM
writer to read mode
(V
CC
= 5.0 V
±
0.25 V,
V
PP
= V
CC
)
All address
read results
OK?
No
Yes
End
No good
No
V
CC
: Power supply
V
PP
: PROM program power supply
t
PW
: Initial programming pulse width
t
OPW
: Over-programming pulse width
n = 25?
Yes
A 1
→
address
<
Preliminary
>
Figure 21.6 High-Speed, High-Reliability Programming Basic Flow
Содержание SH7041 Series
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Страница 923: ...SH7040 SH7041 SH7042 SH7043 SH7044 SH7045 Group Hardware Manual REJ09B0044 0600O ...