24AA01T MICROCHIP [Microchip Technology], 24AA01T Datasheet - Page 8

• Manufacturer Part Number: 24AA01T
• Description: 1K I2C Serial EEPROM
• Manufacturer: MICROCHIP [Microchip Technology]

24AA01/24LC01B
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 =
busy with the write cycle, no ACK will be returned. 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 a flow diagram of
this operation.
FIGURE 5-1:
DS21711C-page 8
ACKNOWLEDGE POLLING
Initiate Write Cycle
Send Control Byte
Write Command
with R/W = 0
Acknowledge
Condition to
Send Stop
(ACK = 0)?
Did Device
Send Start
Operation
Send
Next
ACKNOWLEDGE POLLING
FLOW
Yes
0
). If the device is still
No
6.0
The 24XX01 can be used as a serial ROM when the
WP pin is connected to V
inhibited and the entire memory will be write-protected.
WRITE-PROTECTION
 2003 Microchip Technology Inc.
CC
. Programming will be