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RX - 4803 SA / LC
8.7. V
and CE timing
DD
* When the power is turned to ON, use with CE = " L " ( V
timing chart.
V
DD
CE
Item
CE voltage when power is
turned to ON
CE=V
[V] time when power
CL
is turned to ON
8.8. Backup and Recovery
V
DD
V
CLK
0 V
t
R1
Item
Power supply
detection voltage ( 1 )
Power supply
detection voltage ( 2 )
Power supply
drop time
Initial power-up time
Clock maintenance
power-up time
Please control a power supply in the above agreement so that normalcy operates a detect circuit of power supply injection.
Please start a power supply at 0V by all means.
Before power supply change operation and a shift to backup state ,please set a CE terminal at a Low level
1.6 V
t
CL
V
CL
Symbol
CE impressed voltage
V
CL
until V
DD
Time to maintain CE=V
t
CL
until V
DD
t
F
Back up
Symbol
Condition
−
V
DET
−
V
LOW
−
t
F
−
t
R1
1.6V → V
DD
t
R2
1.6V → V
DD >
Page - 25
[V] in the diagram ) as illustrated in the following
CL
Remark
= 1.6 V
[V]
CL
= 1.6 V
V
DET
t
R2
Min.
Typ.
2
≤ 3.6V
5
3.6V
15
Specification
Unit
0.3 (Max.)
V
30 ( Min. )
ms
Max.
Unit.
2.2
V
1.6
V
µs /V
10
ms /V
µs /V
µs /V
ETM33E-04
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