S-7750C Datasheet, PDF (3/44 Pages) Seiko Instruments Inc – PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)

PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E²PROM CIRCUIT)
Rev.1.1_00
S-7750C
„ Block Diagram
V_CCH
WP
SDA
SCL
VCCH
E²PROM
8-bit × 12
Interface
Circuit
Data Register,
Mode Decode Logic
TIMEN
Circuit for Prevention
Malfunction by Low
Voltage
VSS
Control Port
Register
Timer Scale Setting
Register
Timer Setting
Register
Timer Enable
Register
VCCL
V_CCL
Data Output
Controller
(High / Low setting)
(Delay time setting)
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DO7
Decoder
Dividing
Circuit
Oscillation
Circuit
CLK
Figure 2
Seiko Instruments Inc.
3