24AA512-I/ST Microchip Technology, 24AA512-I/ST Datasheet - Page 11

• Manufacturer Part Number: 24AA512-I/ST
• Description: EEPROM 512KB 1.8V 400KHZ 8TSSOP
• Manufacturer: Microchip Technology

Specifications of 24AA512-I/ST

• Memory Size: 512K (64K x 8)
• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Speed: 100kHz, 400kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-TSSOP
• Memory Configuration: 64K X 8
• Ic Interface Type: 2 Wire, I2C, Serial
• Clock Frequency: 400kHz
• Access Time: 900ns
• Supply Voltage Range: 1.7V To 5.5V
• Memory Case Style: TSSOP
• No. Of Pins: 8
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.0
Since the device will not acknowledge during a write
cycle, this can be used to determine when the cycle is
complete (this feature can be used to maximize bus
throughput). Once the Stop condition for a Write
command has been issued from the master, the device
initiates the internally timed write cycle. ACK polling
can be initiated immediately. This involves the master
sending a Start condition, followed by the control byte
for a Write command (R/W = 0). If the device is still
busy with the write cycle, then no ACK will be returned.
If no ACK is returned, then the Start bit and control byte
must be re-sent. If the cycle is complete, then the
device will return the ACK and the master can then
proceed with the next Read or Write command. See
Figure 7-1 for flow diagram.
© 2007 Microchip Technology Inc.
ACKNOWLEDGE POLLING
24AA512/24LC512/24FC512
FIGURE 7-1:
Send Control Byte
Initiate Write Cycle
Write Command
with R/W = 0
Condition to
Acknowledge
Send Stop
Send Start
Did Device
(ACK = 0)?
Operation
Send
Next
ACKNOWLEDGE POLLING
FLOW
Yes
DS21754H-page 11
No