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28
μ
PD16675A
Switching Characteristics
(Unless otherwise specified, T
A
=
40 to
+
85
°
C, V
DD1
= 2.7 to 3.3 V, V
CHA
= H: V
DD2
= 2.7 to 3.6 V or V
CHA
= L:
V
DD2
= 2.7 to 5.5 V)
Parameter
Symbol
Condition
MIN.
TYP.
MAX.
Unit
Oscillation frequency
f
OSC
Self-oscillation
21
30
50
kHz
Transfer delay time
t
PHL
SCK
↓→
DATA
↓
100
ns
t
PLH
SCK
↓→
DATA
↑
300
ns
Remark
The TYP. value is a reference value when T
A
= 25
°
C.
The time for one frame is obtained with the following formula.
1 frame = 1/f
OSC
×
8
×
number of duties
If f
OSC
= 30 kHz and 1/34 duty, then the result is:
1 frame = 33
μ
s
×
8
×
34 = 9.1 ms
Required Conditions for Timing
(Unless otherwise specified, T
A
=
40 to
+
85
°
C, V
DD1
= 2.7 to 3.3 V, V
CHA
= H: V
DD2
= 2.7 to 3.6 V or V
CHA
= L:
V
DD2
= 2.7 to 5.5 V)
(1) Common
Parameter
Symbol
Condition
MIN.
TYP.
MAX.
Unit
Clock frequency
f
OSC
OSC
IN
external clock
20
30
50
kHz
High level clock pulse width
t
WHC1
OSC
IN
external clock
10
25
μ
s
Low level clock pulse width
t
WLC1
OSC
IN
external clock
10
25
μ
s
High level clock pulse width
t
WHC2
OSC
BRI
external clock
400
ns
Low level clock pulse width
t
WLC2
OSC
BRI
external clock
400
ns
Rise/fall time
t
r
, t
f
OSC
BRI
external clock
100
ns
Reset pulse width
t
WRE
Reset pin
1.0
μ
s
Remark
The TYP. value is a reference value when T
A
= 25
°
C.
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