S-34C04A Datasheet, PDF (11/22 Pages) Seiko Instruments Inc – FOR DIMM SERIAL PRESENCE DETECT

Rev.1.0_01_U
2-WIRE SERIAL E²PROM FOR DIMM SERIAL PRESENCE DETECT
S-34C04A
8. Timeout
This IC has the timeout function. If the SCL stays "L" for the time tTIMEOUT or more, this IC resets the serial interface
and returns to standby mode. If the SCL stays "L" for less than the tTIMEOUT, this IC does not reset the serial interface.
The tTIMEOUT is 30 ms typ.
t_TIMEOUT.MIN
t_TIMEOUT.MAX
CASE 1 _SCL
CASE 2 ^SCL
CASE 3 _SCL
CASE1: SCL clock time "L" ≥ tTIMEOUT.MAX, this IC will reset the bus communication and return to standby mode.
CASE2: SCL clock time "L" < tTIMEOUT.MIN, this IC will not reset the bus communication.
CASE3: tTIMEOUT.MIN ≤ SCL clock time "L" < tTIMEOUT.MAX, this IC may or may not reset the bus communication.
Figure 7 The Examples of the Timeout Timing
When this IC is not in the range of the clock frequency specified by AC characteristics, it may not perform
communication normally.
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