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34AA04T-E/ST Datasheet(PDF) 17 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) 17 Page - Microchip Technology

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 2014 Microchip Technology Inc.
DS20005271B-page 17
34AA04
FIGURE 9-3:
READ PROTECTION STATUS
TABLE 9-4:
DEVICE RESPONSE WHEN READING WRITE PROTECTION STATUS
Status
Command
ACK
Data Byte
ACK
Protected with SWPn
RPSn
NoACK
Don’t Care
NoACK
Not Protected
RPSn
ACK
Don’t Care
NoACK
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
A
1
0
Dummy
Byte
A
1
2
A
1
1
A2
C
K
Note 1:
Chip Select bits A0-A2 vary depending on which RPS command is being performed.
2:
The 34AA04 will only acknowledge if the specified block is not currently write-protected.
3:
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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