s-24c04c Seiko Instruments Inc., s-24c04c Datasheet - Page 24

• Manufacturer Part Number: s-24c04c
• Description: 2-wire Serial E2prom
• Manufacturer: Seiko Instruments Inc.

24
2-WIRE SERIAL E
S-24C04C
4. Acknowledge check
5. Built-in power-on-clear circuit
The I
error. This function allows detection of a communication failure during data communication between the master
device and S-24C04C. This function is effective to prevent malfunction, so it is recommended to perform an
acknowledge check with the master device.
The S-24C04C 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
Shown in Figure 27, raise the power supply voltage from 0.2 V max., within the time defined as t
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-24C04C.
*2. t
2
C-bus protocol includes an acknowledge check function as a handshake function to prevent a communication
INIT
V
is the time required to initialize the S-24C04C. No instructions are accepted during this time.
INIT
(Max.)
2
PROM
0.2 V
Figure 27 Raising Power Supply Voltage
t
INIT
Seiko Instruments Inc.
t
RISE
*2
(Max.)
(Max.)
RISE
= 200 ms seen in Figure 28. The power supply voltage
Power Supply Voltage (V
0 V
*1
CC
)
Rev.2.0
RISE
which is the
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