AT24CS04-SSHM-T Atmel, AT24CS04-SSHM-T Datasheet - Page 7

• Manufacturer Part Number: AT24CS04-SSHM-T
• Description: EEPROM 4-Kbit Serial EEPROM
• Manufacturer: Atmel

Specifications of AT24CS04-SSHM-T

• Rohs: yes
• Memory Size: 4 Kbit
• Organization: 512 B x 8
• Data Retention: 100 yr
• Maximum Clock Frequency: 1000 KHz
• Maximum Operating Current: 6 uA
• Operating Supply Voltage: 1.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8

7.
Device Operation
Clock and Data Transitions: The SDA pin is normally pulled high with an external device. Data on the SDA pin may
change only during SCL low time periods (see
a Start or Stop condition as defined below.
Start Condition: A high-to-low transition of SDA with SCL high is a Start condition which must precede any other
command (see
Stop Condition: A low-to-high transition of SDA with SCL high is a Stop condition. After a read sequence, the Stop
command will place the EEPROM in a standby power mode (see
Acknowledge: All addresses and data words are serially transmitted to and from the EEPROM in 8-bit words. The
EEPROM sends a zero to acknowledge that it has received each word. This happens during the ninth clock cycle.
Standby Mode: The AT24CS04/08 features a low-power standby mode which is enabled upon power-up as well as after
the receipt of the Stop bit and the completion of any internal operations.
2-wire Software Reset: After an interruption in protocol, power loss, or system reset, any 2-wire part can be reset by
following these steps:
The device is ready for next communication after above steps have been completed.
Figure 7-1. Software reset
SDA
SCL
1.
2.
3.
Create a start bit condition.
Clock nine cycles.
Create another start bit followed by stop bit condition as shown in
Start
Bit
Figure 7-5 on page
1
9).
2
Dummy Clock Cycles
Figure 7-4 on page
3
Atmel AT24CS04/08 [PRELIMINARY DATASHEET]
Figure 7-5 on page
9). Data changes during SCL high periods will indicate
8
Figure
7-1.
9
9).
Start
Bit
8766C–SEEPR–9/2012
Stop
Bit
7