24C01C-E/P Microchip Technology, 24C01C-E/P Datasheet - Page 10

• Manufacturer Part Number: 24C01C-E/P
• Description: IC EEPROM 1KBIT 400KHZ 8DIP
• Manufacturer: Microchip Technology

Specifications of 24C01C-E/P

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 1K (128 x 8)
• Speed: 100kHz, 400kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

24C01C
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.
DS21201J-page 10
ACKNOWLEDGE POLLING
FIGURE 7-1:
Initiate Write Cycle
Send Control Byte
Write Command
Acknowledge
with R/W = 0
Condition to
Did Device
(ACK = 0)?
Send Stop
Send Start
Operation
Send
Next
ACKNOWLEDGE
POLLING FLOW
© 2008 Microchip Technology Inc.
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