s-24c128ci-t8t1u3 Seiko Instruments Inc., s-24c128ci-t8t1u3 Datasheet - Page 23

• Manufacturer Part Number: s-24c128ci-t8t1u3
• Description: 2-wire Serial Eeprom S-24c128c 128k-bit
• Manufacturer: Seiko Instruments Inc.

Rev.2.0
4. Acknowledge check
5. Built-in power-on-clear circuit
The I
communication error. This function allows detection of a communication failure during data communication
between the master device and S-24C128C. This function is effective to prevent malfunction, so it is
recommended to perform an acknowledge check with the master device.
The S-24C128C has a built-in power-on-clear circuit that initializes itself at the same time during power-on.
Unsuccessful initialization may cause a malfunction. To operate the power-on-clear circuit normally, the following
conditions must be satisfied to raise the power supply voltage.
5. 1 Raising power supply voltage
*2. t
Shown in Figure 25, raise the power supply voltage from 0.2 V max., within the time defined as t
the time required to reach the power supply voltage to be set.
For example, if the power supply voltage is 5.0 V, t
must be raised within 200 ms.
*1. 0 V means there is no difference in potential between the VCC pin and the GND pin of the S-24C128C.
_00_H
2
C-bus protocol includes an acknowledge check function as a handshake function to prevent a
INIT
V
INIT
is the time required to initialize the S-24C128C. No instructions are accepted during this time.
(Max.)
0.2 V
Figure 25 Raising Power Supply Voltage
t
INIT
Seiko Instruments Inc.
t
RISE
*2
(Max.)
(Max.)
RISE
= 200 ms seen in Figure 26. The power supply voltage
Power Supply Voltage (V
0 V
2-WIRE CMOS SERIAL E
*1
CC
)
S-24C128C
RISE
which is
2
PROM
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