Hitachi H8/3692 ユーザーズマニュアル
Rev. 71, 07/01, page 101 of 372
7. Perform one auto-program operation for a 128-byte block for each address. Two or more
additional programming operations cannot be performed on a previously programmed address
block.
block.
8. Confirm normal end of auto-programming by checking I/O6. Alternatively, status read mode
can also be used for this purpose (I/O7 status polling is used as the auto-program operation end
decision pin).
decision pin).
9. Status polling I/O6 and I/O7 pin information is retained until the next command write. As long
as the next command write has not been performed, reading is possible by enabling
CE and
OE.
10. Table 7-11 shows the AC characteristics.
Table 7-11 AC Characteristics in Auto-Program Mode (Conditions: V
CC
= 5.0 V ±0.5 V,
V
SS
= 0 V, T
a
= 25°C ±5°C)
Item
Symbol
Min
Max
Unit
Notes
Command write cycle
t
nxtc
20
—
µs
Figure 7-10
CE
hold time
t
ceh
0
—
ns
CE
setup time
t
ces
0
—
ns
Data hold time
t
dh
50
—
ns
Data setup time
t
ds
50
—
ns
Write pulse width
t
wep
70
—
ns
Status polling start time
t
wsts
1
—
ms
Status polling access time
t
spa
—
150
ns
Address setup time
t
as
0
—
ns
Address hold time
t
ah
60
—
ns
Memory write time
t
write
1
3000
ms
WE
rise time
t
r
—
30
ns
WE
fall time
t
f
—
30
ns