S-93C46A Datasheet, PDF (38/53 Pages) Seiko Instruments Inc – CMOS SERIAL E2PROM

trise (max)
Power voltage VCC
Vinit (max)
0.2v
5.0
4.0
3.0
2.0
0v (Note1)
*1 At 0 V, there is no potential difference
between the VCC and GND terminals of
the EEPROM.
tinit(max) (Note2)
*2 t.nit is the time required for EEPROM to
initialize internally. During this time period,
the EEPROM will not accept commands.
Fig. 1 Activation of the Power Voltage
Example) If the operating power voltage is
5 V, ensure that the power voltage reaches
5 V within 20.0 ms.
50 100 150 200 (msec)
Power-voltage activation time t_rise (max)
Fig. 2 Maximum power-voltage activation time
 Initialize time tinit
The EEPROM is instantly initialized when the power voltage is activated.
Since the EEPROM does not accept commands during initialization, the transmission of commands
to the EEPROM must be started after this initialization time period.
Fig. 3 shows the time required to initialize the EEPROM.
37