24AA32A-I/SN Microchip Technology, 24AA32A-I/SN Datasheet - Page 9

• Manufacturer Part Number: 24AA32A-I/SN
• Description: IC EEPROM 32KBIT 400KHZ 8SOIC
• Manufacturer: Microchip Technology

Specifications of 24AA32A-I/SN

• Memory Size: 32K (4K 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-SOIC (3.9mm Width)
• Memory Configuration: 4K X 8
• Ic Interface Type: I2C
• Clock Frequency: 400kHz
• Supply Voltage Range: 1.7V To 5.5V
• Memory Case Style: SOIC
• No. Of Pins: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 24AA32AI/SN

5.0
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 then 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, the Start bit and control byte must
be re-sent. If the cycle is complete, the device will
return the ACK and the master can then proceed with
the next Read or Write command. See Figure 5-1 for
flow diagram of this operation.
© 2007 Microchip Technology Inc.
ACKNOWLEDGE POLLING
FIGURE 5-1:
24AA32A/24LC32A
Initiate Write Cycle
Send Control Byte
Write Command
with R/W = 0
Condition to
Acknowledge
Send Stop
Send Start
Did Device
(ACK = 0)?
Operation
Send
Next
ACKNOWLEDGE POLLING
FLOW
Yes
No
DS21713H-page 9