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24LC21A-IP Datasheet(PDF) 8 Page - Microchip Technology

Part # 24LC21A-IP
Description  1K 2.5V Dual Mode I 2 C Serial EEPROM
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

24LC21A-IP Datasheet(HTML) 8 Page - Microchip Technology

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24LC21A
DS21160F-page 8
 2003 Microchip Technology Inc.
FIGURE 3-5:
BUS TIMING START/STOP
FIGURE 3-6:
BUS TIMING DATA
3.1.6
SLAVE ADDRESS
After generating a Start condition, the bus master
transmits the slave address consisting of a 7-bit device
code (1010000) for the 24LC21A.
The eighth bit of slave address determines whether the
master device wants to read or write to the 24LC21A
(Figure 3-7).
The 24LC21A monitors the bus for its corresponding
slave
address
continuously.
It
generates
an
Acknowledge bit if the slave address was true and it is
not in a programming mode.
FIGURE 3-7:
CONTROL BYTE
ALLOCATION
SCL
SDA
START
STOP
VHYS
TSU:STO
THD:STA
TSU:STA
SCL
SDA
IN
SDA
OUT
TSU:STA
TSP
TAA
TF
TLOW
THIGH
THD:STA
THD:DAT
TSU:DAT
TSU:STO
TBUF
TAA
TR
Operation
Slave Address
R/W
Read
1010000
1
Write
1010000
0
R/W
A
10
1
0
0
0
0
READ/WRITE
START
SLAVE ADDRESS


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