24AA00-I/P Microchip Technology, 24AA00-I/P Datasheet - Page 7

• Manufacturer Part Number: 24AA00-I/P
• Description: IC EEPROM 128BIT 400KHZ 8DIP
• Manufacturer: Microchip Technology

Specifications of 24AA00-I/P

• Memory Size: 128 (16 x 8)
• Package / Case: 8-DIP (0.300", 7.62mm)
• Operating Temperature: -40°C ~ 85°C
• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Speed: 100kHz, 400kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.7 V ~ 5.5 V
• Organization: 16 K x 8
• Interface Type: I2C
• Maximum Clock Frequency: 0.4 MHz
• Access Time: 4 ms
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.7 V
• Maximum Operating Current: 5 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 4.5 V, 5.5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 24AA00-I/PR; 24AA00-I/PR

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.
FIGURE 7-2:
 2003 Microchip Technology Inc.
SDA LINE
BUS ACTIVITY
MASTER
BUS ACTIVITY
X = Don’t Care Bit
ACKNOWLEDGE POLLING
S
T
A
R
T
S
1
BYTE WRITE
0
1
CONTROL
BYTE
0
X
X
X
0
A
C
K
X
X
X
ADDRESS
24AA00/24LC00/24C00
WORD
X
FIGURE 7-1:
A
C
K
Initiate Write Cycle
Send Control Byte
Write Command
with R/W = 0
Acknowledge
Condition to
Send Stop
(ACK = 0)?
Did Device
Send Start
Operation
ACKNOWLEDGE
POLLING FLOW
Send
Next
DATA
YES
DS21178D-page 7
NO
A
C
K
P
S
T
O
P