S-35770E01A-K8T2U Datasheet, PDF (9/26 Pages) Seiko Instruments Inc – CONVENIENCE TIMER

Rev.1.2_00
FOR AUTOMOTIVE 125°C OPERATION 2-WIRE COUNTER CONVENIENCE TIMER
S-35770 Series
 AC Electrical Characteristics
Table 7 Measurement Conditions
Input pulse voltage
Input pulse rise / fall time
Output reference voltage
Output load
V_IH = 0.8 × V_DD,
V_IL = 0.2 × V_DD
20 ns
V_OH = 0.7 × V_DD,
V_OL = 0.3 × V_DD
100 pF
Input pulse voltage
0.8 × V_DD
Output reference voltage
0.7 × VDD
0.2 × V_DD
0.3 × V_DD
Figure 9 Input / Output Waveform during AC Measurement
Table 8 AC Electrical Characteristics
(Ta = −40°C to +125°C)
Item
Symbol
V_DD = 1.5 V to 2.5 V
Min.
Max.
V_DD = 2.5 V to 5.5 V
Unit
Min.
Max.
SCL clock frequency
f_SCL
0
400
0
1000
kHz
SCL clock "L" time
t_LOW
1.3
−
0.4
−
μs
SCL clock "H" time
SDA output delay time^*1
t_HIGH
t_AA
0.6
−
0.3
−
μs
−
0.9
−
0.5
μs
Start condition set-up time
t_SU.STA
0.6
−
0.25
−
μs
Start condition hold time
t_HD.STA
0.6
−
0.25
−
μs
Data input set-up time
t_SU.DAT
100
−
80
−
ns
Data input hold time
t_HD.DAT
0
−
0
−
ns
Stop condition set-up time
t_SU.STO
0.6
−
0.25
−
μs
SCL, SDA rise time
t_R
−
0.3
−
0.3
μs
SCL, SDA fall time
t_F
−
0.3
−
0.3
μs
Bus release time
t_BUF
1.3
−
0.5
−
μs
Noise suppression time
t_l
−
50
−
50
ns
CLKIN clock frequency
f_CLKIN
0
400
0
1000
kHz
CLKIN clock "L" time
t_{CLKIN_L}
1.3
−
0.4
−
μs
CLKIN clock "H" time
t_{CLKIN_H}
0.6
−
0.3
−
μs
CLKIN rise time
t_{CLKIN_R}
−
0.3
−
0.3
μs
CLKIN fall time
t_{CLKIN_F}
−
0.3
−
0.3
μs
*1. Since the output form of the SDA pin is Nch open-drain output, the SDA output delay time is determined by the values of
the load resistance and load capacitance outside the IC. Figure 11 shows the relationship between the output load
values.
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