AT88SC0104CA-MJ Atmel, AT88SC0104CA-MJ Datasheet - Page 7

• Manufacturer Part Number: AT88SC0104CA-MJ
• Description: IC EEPROM 1KBIT 4MHZ M2J
• Manufacturer: Atmel
• Series: CryptoMemory®r

Specifications of AT88SC0104CA-MJ

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 1K (128 x 8)
• Speed: 4MHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: M2 J, Smart Card Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.
7.1.
7.1.1. Start condition
7.1.2. Stop condition
7.1.3. ACKNOWLEDGE
7.2.
5200ES–CRYPT–08/09
Device Operations for Synchronous Protocols
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
defined below.
A high-to-low transition of SDA with SCL high defines a START condition which must precede all commands (see
Figure 7
A low-to-high transition of SDA with SCL high defines a STOP condition. After a read sequence, the STOP condition
will place the EEPROM in a standby power mode (see
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 (see
page 9).
Memory Reset
After an interruption in communication due protocol errors, power loss or any reason, perform "Acknowledge Polling" to
properly recover from the condition. Acknowledge polling consists of sending a start condition followed by a valid
CryptoMemory command byte and determining if the device responded with an ACKNOWLEDGE.
Figure 4.
SDA OUT
SDA IN
SCL
on page 8).
Bus Time for 2-Wire Serial Communications. SCL: Serial Clock, SDA: Serial Data I/O
t
Figure 6
SU.STA
on page 8). Data changes during SCL high periods will indicate a start or stop condition as
t
HD.STA
t
t
F
LOW
t
AA
t
HIGH
t
HD.DAT
Figure 7
on page 8).
t
LOW
t
t
SU.DAT
DH
AT88SC0104CA
t
R
Figure 8
t
SU.STO
t
BUF
on
7