S-7760A Datasheet, PDF (9/53 Pages) Seiko Instruments Inc – PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)

PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E²PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ AC Electrical Characteristics
Table 9 Measurement Conditions
Input pulse voltage
Rising/falling time of input pulse
Output reference voltage
Output load
V_IL = 0.1 × V_CCH, V_IH = 0.9 × V_CCH
20 ns
0.5 × V_CCH
100 pF+ Pull-up resistor 1.0 kΩ
SDA
V_CCH
R=1.0 kΩ
C=100 pF
SCL
SDA IN
SDA OUT
Figure 10 Output Load Circuit
Table 10 AC Electrical Characteristics
Item
SCL clock frequency ^*1
SCL clock time “L” ^*1
SCL clock time “H” ^*1
SDA output delay time ^*1
SDA output hold time ^*1
Start condition setup time ^*1
Start condition hold time ^*1
Data input setup time ^*1
Data input hold time ^*1
Stop condition setup time ^*1
SCL, SDA rise time ^*1
SCL, SDA fall time ^*1
Bus release time ^*1
Noise suppression time ^*1
Frequency for external
oscillation input ^*2
Symbol
V_CCH = 2.3 to 4.5 V
Unit
Min.
Typ.
Max.
f_SCL
0
−
400 kHz
t_LOW
1.3
−
−
µs
t_HIGH
0.6
−
−
µs
t_AA
−
−
0.9
µs
t_DH
50
−
−
ns
t_SU.STA
0.6
−
−
µs
t_HD.STA
0.6
−
−
µs
t_SU.DAT
100
−
−
ns
t_HD.DAT
0
−
−
ns
t_SU.STO
0.6
−
−
µs
t_R
−
−
0.3
µs
t_F
−
−
0.3
µs
t_BUF
1.3
−
−
µs
t_I
−
−
50
ns
f_TEX
−
−
400 kHz
*1. The timing is defined by 10% and 90% of the waveform.
*2. When selecting the option for external oscillation input.
t_F
t_HIGH
t_LOW
t_R
t_SU.STA
t_HD.STA
t_HD.DAT t_SU.DAT
t_AA
t_DH
Figure 11 Bus Timing
Seiko Instruments Inc.
t_SU.STO
t_BUF
9