S35390A Datasheet, PDF (8/51 Pages) Seiko Instruments Inc – FOR AUTOMOTIVE 105C OPERATION

FOR AUTOMOTIVE 105°C OPERATION 2-WIRE REAL-TIME CLOCK
S-35390A H Series
Rev.2.2_00
 AC Electrical Characteristics
Table 8 Measurement Conditions
Input pulse voltage
Input pulse rise / fall time
Output determination voltage
Output load
V_IH = 0.9 × V_DD, V_IL = 0.1 × V_DD
20 ns
V_OH = 0.5 × V_DD, V_OL = 0.5 × V_DD
100 pF + pull-up resistor 1 kΩ
SDA
V_DD
R = 1 kΩ
C = 100 pF
Remark The power supplies of the IC
and load have the same
electrical potential.
Figure 7 Output Load Circuit
Table 9 AC Electrical Characteristics
(Ta = −40°C to +105°C)
Item
Symbol
V_DD^*2 ≥ 1.3 V
Min. Typ. Max.
V_DD^*2 ≥ 3.0 V
Min. Typ. Max.
Unit
SCL clock frequency
f_SCL
0
−
100
0
−
400 kHz
SCL clock low time
t_LOW
4.7
−
−
1.3
−
−
μs
SCL clock high time
SDA output delay time^*1
t_HIGH
t_PD
4
−
−
0.6
−
−
μs
−
−
3.5
−
−
0.9 μs
Start condition setup time
t_SU.STA
4.7
−
−
0.6
−
−
μs
Start condition hold time
t_HD.STA
4
−
−
0.6
−
−
μs
Data input setup time
t_SU.DAT
250
−
−
100
−
−
ns
Data input hold time
t_HD.DAT
0
−
−
0
−
−
μs
Stop condition setup time
t_SU.STO
4.7
−
−
0.6
−
−
μs
SCL, SDA rise time
t_R
−
−
1
−
−
0.3 μs
SCL, SDA fall time
t_F
−
−
0.3
−
−
0.3 μs
Bus release time
t_BUF
4.7
−
−
1.3
−
−
μs
Noise suppression time
t_I
−
−
100
−
−
50
ns
*1. Since the output format of the SDA pin is Nch open-drain output, SDA output delay time is determined by the values of
the load resistance (R_L) and load capacity (C_L) outside the IC. Therefore, use this value only as a reference value.
*2. Regarding the power supply voltage, refer to " Recommended Operation Conditions".
t_F
t_HIGH
t_LOW
t_R
SCL
t_SU.STA ^tHD.STA
SDA
(S-35390A H Series input)
t_HD.DAT tSU.DAT
SDA
(S-35390A H Series output)
8
t_PD
Figure 8 Bus Timing
Seiko Instruments Inc.
t_SU.STO
t_BUF