S-34C02A Datasheet, PDF (9/34 Pages) Seiko Instruments Inc – 2-WIRE CMOS SERIAL E2PROM FOR DIMM SERIAL PRESENCE DETECT

2-WIRE CMOS SERIAL E2PROM FOR DIMM SERIAL PRESENCE DETECT
Rev.1.2_00
S-34C02A
„ Operation
1. Start Condition
A start condition starts by changing the SDA line from “H” to “L” while the SCL line is “H”.
All operations start with a start condition.
2. Stop Condition
A stop condition starts by changing the SDA line from “L” to “H” while the SCL line is “H”.
During Read sequence if the S-34C02A receives a stop condition, its Read operation is interrupted so that the S-
34C02A goes in the standby mode.
During Write sequence if the S-34C02A receives a stop condition, the S-34C02A finishes installing Write data so that
the Write operation starts.
t_SU.STA t_HD.STA
t_SU.STO
SCL
SDA
(in)
Start Condition
Figure 6 Start / Stop Conditions
Stop Condition
Seiko Instruments Inc.
9