Memory ICs
•Electrical characteristic curves
1.35
1.30
1.25
1.20
1.15
– 20
0
20
40
60
80
AMBIENT TEMPERATURE: Ta (°C)
Fig. 1 Reset circuit 1 detector
voltage vs.
ambient temperature
280
240
200
160
120
80
– 20
0
20
40
60
80
AMBIENT TEMPERATURE: Ta (°C)
Fig. 3 Reset circuit 1 high level
transmission delay time vs.
ambient temperature
100
80
60
40
20
0
– 20
0
20
40
60
80
AMBIENT TEMPERATURE: Ta (°C)
Fig. 5 Reset circuit 2 Hysteresis
voltage vs.
ambient temperature
BH6150F
25
20
15
10
5
– 20
0
20
40
60
80
AMBIENT TEMPERATURE: Ta (°C)
Fig. 2 Reset circuit 1 Hysteresis
voltage vs.
ambient temperature
4.4
4.3
4.2
4.1
4.0
3.8
– 20
0
20
40
60
80
AMBIENT TEMPERATURE: Ta (°C)
Fig. 4 Reset circuit 2 detector
voltage vs.
ambient temperature
200
160
Ct0 = L, Ct1 = L
120
Ct0 = H, Ct1 = H
80
Ct0 = H, Ct1 = L
40
Ct0 = L, Ct1 = H
0
– 20
0
20
40
60
80
AMBIENT TEMPERATURE: Ta (°C)
Fig. 6 Reset circuit 2 high level
transmission delay time vs.
ambient temperature
7