24AA256 Datasheet, PDF (5/12 Pages) Microchip Technology – 256K I 2 C CMOS Serial EEPROM

24AA256/24LC256
FIGURE 4-1: DATA TRANSFER SEQUENCE ON THE SERIAL BUS
(A) (B)
(D)
(D)
SCL
(C) (A)
SDA
START
CONDITION
ADDRESS OR
DATA
ACKNOWLEDGE ALLOWED
VALID
TO CHANGE
STOP
CONDITION
FIGURE 4-2: ACKNOWLEDGE TIMING
Acknowledge
Bit
SCL
12 345678 9 123
SDA
Data from transmitter
Transmitter must release the SDA line at this point
allowing the Receiver to pull the SDA line low to
acknowledge the previous eight bits of data.
Data from transmitter
Receiver must release the SDA line at this point
so the Transmitter can continue sending data.
© 1998 Microchip Technology Inc.
DS21203C-page 5