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34AA04T-E/ST Datasheet(PDF) 9 Page - Microchip Technology

Part # 34AA04T-E/ST
Description  4K I2C??Serial EEPROM with Software Write-Protect
PDF  36 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

34AA04T-E/ST Datasheet(HTML) 9 Page - Microchip Technology

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 2014 Microchip Technology Inc.
DS20005271B-page 9
34AA04
5.2
Read Bank Address (RBA)
The Read Bank Address (RBA) command allows the
34AA04 to indicate which array bank is currently
selected.
The master generates a Start condition and transmits
the RBA control byte (Table 5-2), with the R/W bit set
to logic ‘1’. If Bank 0 is currently selected, the 34AA04
will respond with an Acknowledge signal. If Bank 1 is
currently selected, an Acknowledge will not be
generated. Regardless of the result, the master must
read at least one dummy byte from the 34AA04,
transmitting a Not Acknowledge signal after each byte,
and generate a Stop condition to end the command
(Figure 5-2).
FIGURE 5-2:
READ BANK ADDRESS
SP
Bus Activity
Master
SDA Line
Bus Activity
S
T
O
P
Control
Byte
N
o
A
C
K
S
T
A
R
T
01
1
0
1
Dummy
Byte
A1
C
K
Note 1:
The 34AA04 will only acknowledge if Bank 0 is currently selected.
110
2:
In accordance with the JEDEC spec, the master is allowed to read multiple dummy bytes,
transmitting a Not Acknowledge after each byte.



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