Voltage detectors bd52xxg/fve bd53xxg/fve, And power supply for the reset detection (v, Side, it can be used – Rainbow Electronics BD5323G_FVE User Manual
Page 6: When the capacitor c, For noise filtering is connected to v, Rev.a
Output delay time "L H"
C
L
Capacitance
[pF]
C
L
Capacitance
[pF]
dela
y time [
µ
s]
Output delay time "H L"
dela
y time [
µ
s]
10000
30
31
32
33
34
35
36
37
38
39
40
1000
100
[BD5227G/FVE]
5V
V
DET
+0.5V
R
L
=100K
C
L
V
DD
V
OUT
C
T
GND
C
T
5V
V
DET
+0.5V
R
L
=100K
C
L
V
DD
V
OUT
C
T
GND
0
400
500
600
100
200
300
700
800
900
1000
100
1000
10000
[BD5227G/FVE]
(Noise filtering
capacitor)
(Noise filtering
capacitor)
( )
BD52XXX
V
DD2
V
DD1
R
L
R
ST
C
L
C
T
GND
( )
BD53XXX
V
DD1
C
L
C
T
GND
R
ST
Micro
controller
Micro
controller
Application circuit
1) Application circuit as ordinal supply detection reset is shown below.
Output type of BD52XXG/FVE series (Open drain type) and BD53XXG/FVE series (CMOS type) is different.
An example of usage is shown below.
1 When the power supply of microcontroller (V
DD2
) and power supply for the reset detection (V
DD1
) is different.
Provide RL for the output of a product with open drain output (BD52XXG/FVE series) on the V
DD2
side,
as shown in Fig.10.
2 When the power supply of microcontroller and that of reset is same (V
DD1
).
A product with CMOS output (BD53XXG/FVE series) can be used as shown in Fig.11. Or if RL is provided
with open drain output (BD52XXG/FVE series) on the V
DD1
side, it can be used.
Fig.10 Open collector output type
Fig.11 CMOS output type
Fig.14 Delay time I/O condition
Fig.12
Fig.13
When the capacitor C
L
for noise filtering is connected to V
OUT
pin (reset signal input pin of microcontroller),
make a setting in consideration of the wave rounding of the rise and fall of V
OUT
pin.
6/15
Voltage detectors
BD52XXG/FVE
BD53XXG/FVE
Detection voltage V
DET
[V]
Release voltage
(V
DET
+ V
DET
)
0.5V
T
PLH
0.5V
5V
V
DD
V
OUT
V
OUT
=5VX0.5 [V]
T
PHL
Rev.A