S-7750C Datasheet, PDF (8/44 Pages) Seiko Instruments Inc – PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)

PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E²PROM CIRCUIT)
S-7750C
Rev.1.1_00
„ AC Electrical Characteristics
Table 8 Measurement Conditions
Input pulse voltage
Rising / falling time of input pulse
V_IL = 0.1×V_CCH, V_IH = 0.9×V_CCH
20 ns
Output reference voltage
Output load
0.5×V_CCH
100 pF+ Pull-up resistor 1.0 kΩ
SDA
V_CCH
R = 1.0 kΩ
C = 100 pF
Figure 7 Output Load Circuit
SCL
Table 9 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
Frequency for external oscillation input ^*2
Symbol
f_SCL
t_LOW
t_HIGH
t_AA
t_DH
t_SU.STA
t_HD.STA
t_SU.DAT
t_HD.DAT
t_SU.STO
t_R
t_F
t_BUF
t_I
f_TEX
V_CCH = 2.3 to 4.5 V
Unit
Min.
Typ.
Max.
0
−
400
kHz
1.0
−
−
µs
0.9
−
−
µs
−
−
0.9
µs
50
−
−
ns
0.6
−
−
µs
0.6
−
−
µs
100
−
−
ns
0
−
−
ns
0.6
−
−
µs
−
−
0.3
µs
−
−
0.3
µs
1.3
−
−
µs
−
−
50
ns
−
−
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_SU.STO
SDA IN
t_BUF
t_AA
t_DH
SDA OUT
Figure 8 Bus Timing
8
Seiko Instruments Inc.