S-24CS16A0I-D8S1G Seiko Instruments, S-24CS16A0I-D8S1G Datasheet - Page 15

• Manufacturer Part Number: S-24CS16A0I-D8S1G
• Description: IC EEPROM 16KBIT 400KHZ 8DIP
• Manufacturer: Seiko Instruments

Specifications of S-24CS16A0I-D8S1G

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 16K (2K x 8)
• Speed: 400kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-DIP
• Organization: 2 K x 8
• Interface Type: 2-Wire
• Maximum Clock Frequency: 0.4 MHz
• Access Time: 1 us
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.8 V
• Maximum Operating Current: 4 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 1.8 V, 5.5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Rev.5.2
6. 3 Write Protection
6. 4 Acknowledge Polling
SCL
SDA
WP
Write protection is available in the S-24CS16A. When the WP pin is connected to the V
memory area is forbidden at all.
When the WP pin is connected to the GND, the write protection is invalid, and write operation in all memory area is
available.
Fix the level of the WP pin from the rising edge of SCL for loading the last write data (D0) until the end of the write
time (10 ms max.). If the WP pin changes during this time, the address data being written at this time is not
guaranteed.
There is no need for using write protection, the WP pin should be connected to the GND. The write protection is
valid in the operating voltage range.
Acknowledge polling is used to know the completion of the write cycle in the E
After the E
response is made to the signal transmitted by the master device.
Accordingly the master device can recognize the completion of the write cycle in the E
response from the slave device after transmitting the start condition, the device address and the read / write
instruction code to the E
That is, if the E
generates an acknowledge, the write cycle has been completed.
Keep the level of the WP pin fixed until acknowledge is confirmed.
It is recommended to use the read instruction “1” as the read / write instruction code transmitted by the master
device.
_00
Write Data
2
PROM receives a stop condition and once starts the write cycle, all operations are forbidden and no
2
PROM does not generate an acknowledge, the write cycle is in progress and if the E
D0
2
PROM, namely to the slave devices.
Acknowledge
Figure 16 WP Pin Fixed Period
WP Pin Fixed Period
Seiko Instruments Inc.
Condition
Stop
t
WR
2-WIRE CMOS SERIAL E
2
PROM.
2
PROM by detecting a
CC
Condition
, write operation to
Start
S-24CS16A
2
PROM
2
PROM
15