Hitachi H8/3692 ユーザーズマニュアル
Rev. 71, 07/01, page 103 of 372
Table 7-12 AC Characteristics in Auto-Erase 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 7-11
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
ests
1
—
ms
Status polling access time
t
spa
—
150
ns
Memory erase time
t
erase
100
40000
ms
WE
rise time
t
r
—
30
ns
WE
fall time
t
f
—
30
ns
A15–A0
I/O7
I/O6
I/O5–I/O0
t
wep
t
ds
t
dh
t
f
t
r
t
ests
t
erase
t
spa
t
ces
t
ceh
t
nxtc
t
nxtc
H'20
H'20
H'00
Erase end
decision signal
Erase normal
end
decision signal
Figure 7-11 Auto-Erase Mode Timing Waveforms