S-7760A Datasheet, PDF (33/53 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
6. SDA pin and SCL pin noise suppression time
The S-7760A includes a built-in low-pass filter at the SDA and SCL pins to suppress noise.
This filter suppresses noise with the width of less than 130 ns when the power supply voltage is 3.0 V.
Refer to noise suppression time (t_l) in Table 10 regarding details of the assurable value.
400
300
Noise suppression time (t_I) Max.
[ns]
200
100
0
2.0
3.0
4.0
5.0
Power supply voltage V_CCH [V]
Figure 37 Noise Suppression Time for SDA and SCL Pins (CMOS input type)
400
300
Noise suppression time (tI) Max.
[ns]
200
100
0
2.0
3.0
4.0
5.0
Power supply voltage VCCH [V]
Figure 38 Noise Suppression Time for SDA and SCL Pins (Low voltage input type)
Seiko Instruments Inc.
33