AT24C04A-10PU-2.7 Atmel, AT24C04A-10PU-2.7 Datasheet - Page 6

• Manufacturer Part Number: AT24C04A-10PU-2.7
• Description: EEPROM 4K 2-WIRE 1M CYCLES - 10MS 2.7V
• Manufacturer: Atmel

Specifications of AT24C04A-10PU-2.7

• Product Category: EEPROM
• Rohs: yes
• Memory Size: 4 Kbit
• Organization: 512 x 8
• Data Retention: 100 yr
• Maximum Clock Frequency: 0.4 MHz
• Maximum Operating Current: 3 mA
• Operating Supply Voltage: 2.7 V, 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Package / Case: PDIP-8
• Access Time: 900 ns
• Interface Type: 2-Wire
• Minimum Operating Temperature: - 40 C
• Factory Pack Quantity: 50
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 2.7 V

Device Operation
6
AT24C02A/04A
CLOCK and DATA TRANSITIONS: The SDA pin is normally pulled high with an exter-
nal device. Data on the SDA pin may change only during SCL low time periods (see
Figure 2). Data changes during SCL high periods will indicate a start or stop condition as
defined below.
Figure 2. Data Validity
START CONDITION: A high-to-low transition of SDA with SCL high is a start condition
that must precede any other command (see Figure 3).
Figure 3. Start and Stop Definition
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 Figure 3).
ACKNOWLEDGE: All addresses and data words are serially transmitted to and from
the EEPROM in 8-bit words.
received each word. This happens during the ninth clock cycle.
STANDBY MODE: The AT24C02A/04A/08A/16A features a low-power standby mode
that is enabled: (a) upon power-up and (b) after the receipt of the Stop bit and the com-
pletion of any internal operations.
MEMORY RESET: After an interruption in protocol, power loss or system reset, any
two-wire part can be reset by following these steps:
1. Clock up to 9 cycles
2. Look for SDA high in each cycle while SCL is high
3. Create a start condition as SDA is high.
.
The EEPROM sends a “0” to acknowledge that it has
0976Q–SEEPR–8/05