AT24C256SC-09AT-2.7 Atmel, AT24C256SC-09AT-2.7 Datasheet - Page 10

• Manufacturer Part Number: AT24C256SC-09AT-2.7
• Manufacturer: Atmel

Specifications of AT24C256SC-09AT-2.7

• Main Category: EEPROM Module
• Sub-category: Serial-2Wire
• Module Type: 8Smart Card Module
• Device Core Size: 8b
• Organization: 32Kx8
• Total Density: 256KBit
• Chip Density: 256Kb
• Access Time (max): 900ns
• Maximum Clock Rate: 400KHz
• Operating Supply Voltage (typ): 3.3/5V
• Operating Current: 3mA
• Number Of Elements: 1
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Not Compliant

Figure 12. Random Read
Notes:
Figure 13. Sequential Read
10
1. * = DON’T CARE bit
2. † = DON’T CARE bit for the 128K
AT24C128SC/AT24C256SC
address and serially clocks out the data word. The microcontroller does not respond
with a zero but does generate a following stop condition (refer to Figure 12).
SEQUENTIAL READ: Sequential reads are initiated by either a current address read or
a random address read. After the microcontroller receives a data word, it responds with
an acknowledge. As long as the EEPROM receives an acknowledge, it will continue to
increment the data word address and serially clock out sequential data words. When the
memory address limit is reached, the data word address will “roll over” and the sequen-
tial read will continue. The sequential read operation is terminated when the
microcontroller does not respond with a zero but does generate a following stop condi-
tion (refer to Figure 13).
P
0
1661B–SEEPR–04/04