24C00-I/SN Microchip Technology, 24C00-I/SN Datasheet - Page 7

• Manufacturer Part Number: 24C00-I/SN
• Description: IC EEPROM 128BIT 400KHZ 8SOIC
• Manufacturer: Microchip Technology

Specifications of 24C00-I/SN

• Memory Size: 128 (16 x 8)
• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Speed: 400kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (3.9mm Width)
• Memory Configuration: 16 X 8
• Ic Interface Type: 2 Wire, I2C, Serial
• Clock Frequency: 400kHz
• Access Time: 3500ns
• Supply Voltage Range: 4.5V To 5.5V
• Memory Case Style: SOIC
• 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.
FIGURE 7-2:
© 2007 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 0
Control
Byte
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
DS21178G-page 7
No
A
C
K
P
S
T
O
P