S7760A Datasheet, PDF (5/54 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.2.0_01
S-7760A
 Equivalent Circuit of I/O Pin
This IC’s I/O pin does not have an element of pull-up or pull-down. The SDA line has an open drain output. The followings
are equivalent circuits.
TIMEN, CLK
SCL
Figure 4 TIMEN, CLK Pin
SCL
Figure 5 SCL Pin (When selecting CLK option)
Open drain output
Figure 6 SCL Pin (When selecting BPDX option)
SDA
Open drain output
Figure 7 SDA Pin
5