s-35192a Seiko Instruments Inc., s-35192a Datasheet - Page 7
s-35192a
Manufacturer Part Number
s-35192a
Description
3-wire Real-time Clock
Manufacturer
Seiko Instruments Inc.
Datasheet
1.S-35192A.pdf
(41 pages)
- Current page: 7 of 41
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Rev.1.2
AC Electrical Characteristics
*1. Since the output format of the SIO pin is Nch open-drain output, output data definition time is determined by the values
*2. Regarding the power supply voltage, refer to “ Recommended Operation Conditions”.
Clock pulse width
Setup time before CS rise
Hold time after CS rise
Input data setup time
Input data hold time
Output data definition time
Setup time before CS fall
Hold time after CS fall
Input rise/fall time
Input pulse voltage
Input pulse rise/fall time
Output determination voltage
Output load
of the load resistance (R
_00
Parameter
Table 7 Measurement Conditions
*1
L
) and load capacity (C
20 ns
V
80 pF + pull-up resistor 10 kΩ
V
IH
OH
= 0.8 × V
= 0.8 × V
t
t
t
t
t
t
t
t
t
Symbol
SCK
DS
CSH
ISU
IHO
ACC
CSS
DH
R
Table 8 AC Electrical Characteristics
, t
F
DD
DD
Seiko Instruments Inc.
, V
, V
Min.
IL
5
1
1
1
1
−
1
1
−
L
OL
) outside the IC. Therefore, use this value only as a reference value.
= 0.2 × V
= 0.2 × V
V
DD
*2
Typ.
DD
−
−
−
−
−
−
−
−
−
≥ 1.3 V
DD
250000
Max.
3.5
0.1
−
−
−
−
−
−
Remark
SIO
Figure 7 Output Load Circuit
3-WIRE REAL-TIME CLOCK
Min.
0.2
0.2
0.2
0.2
0.2
0.2
1
−
−
The power supplies of the IC
and load have the same
electrical potential.
V
DD
*2
Typ.
−
−
−
−
−
−
−
−
−
≥ 3.0 V
V
DD
(Ta = −40 to +85°C)
R = 10 kΩ
C = 80 pF
250000
Max.
0.05
1
−
−
−
−
−
−
S-35192A
Unit
µs
µs
µs
µs
µs
µs
µs
µs
µs
7
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