Samsung C8278X ユーザーズマニュアル
S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
ELECTRICAL
DATA
17-9
Table 17-6. Battery Level Detector Electrical Characteristics
(T
A
= 25
°
C, V
DD
= 2.0 V to 3.6 V)
Parameter Symbol
Conditions Min
Typ
Max
Unit
Operating voltage of BLD
V
DDBLD
−
2.0
−
3.6 V
Voltage of BLD
V
BLD
BLDCON.2-.0 = 000b
2.0
2.2
2.4
BLDCON.2-.0 = 101b
2.15
2.4
2.65
BLDCON.2-.0 = 011b
2.5
2.8
3.1
Current consumption
I
BLD
V
DD
= 3.3 V
−
70 120
µA
V
DD
= 2.2 V
−
50 100
Hysteresis voltage of BLD
∆V
BLDCON.2-0 = 000b,
101b, 011b
101b, 011b
−
10 100 mV
BLD circuit response time
T
B
Fw = 32.768 kHz
−
−
1 ms
Table 17-7. LVR (Low Voltage Reset) Electrical Characteristics
(T
A
= 25
°
C)
Parameter Symbol
Conditions Min
Typ
Max
Unit
Voltage of LVR
V
LVR
T
A
= 25
°
C
2.0 2.2 2.4 V
V
DD
voltage rising time
t
R
−
10
−
−
µs
V
DD
voltage off time
t
OFF
−
0.5
−
−
s
Hysteresis voltage of LVR
∆V
−
−
10 100 mV
Current consumption
I
DDPR
V
DD
= 3.3 V
−
70 120
µA
NOTES:
1. The current of LVR circuit is consumed when LVR is enabled by "Smart Option"
2. Current consumed when low voltage reset circuit is provided internally.
1. The current of LVR circuit is consumed when LVR is enabled by "Smart Option"
2. Current consumed when low voltage reset circuit is provided internally.
t
R
t
OFF
0.9 V
DD
0.1 V
DD
V
DD
Figure 17-6. LVR (Low Voltage Reset) Timing