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CAT34C02 Fiches technique(PDF) 9 Page - ON Semiconductor

No de pièce CAT34C02
Description  2 kb I2C EEPROM for DDR2 DIMM Serial Presence Detect
Download  14 Pages
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Fabricant  ONSEMI [ON Semiconductor]
Site Internet  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CAT34C02 Fiches technique(HTML) 9 Page - ON Semiconductor

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CAT34C02
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9
Table 9. SWP COMMANDS
WP
PSWP RSWP
X
1
XX
No
GND
0X
0
Yes
X
Yes
X
Yes
Yes
0X
0
Yes
X
Yes
X
No
No
X0
X
1
Yes
X
GND GND
1
X
001
X
No
X
GND GND
0
1
001
X
No
GND GND GND
0
0
0
0
1
0
Yes
X
Yes
X
Yes
Yes
GND GND
0
0
0
0
1
0
Yes
X
Yes
X
No
No
X
GND GND
0
0
0
0
1
1
Yes
X
GND
1
X
011
X
No
GND GND
0
X
0
1
1
0
Yes
X
Yes
X
Yes
Yes
GND
0
X
0
1
1
0
Yes
X
Yes
X
No
No
X
GND
0
X
0
1
1
1
Yes
Set
RSWP
Clear
RSWP
0110
Slave Address
Set
PSWP
Action
Control Pin Levels
Flag State
ACK
?
Write
Cycle
ACK
?
ACK
?
Address
Byte
Data
Byte
b7 to b4
A2
A1
A0
b3 b2 b1 b0
(Note 12)
(Note 13)
A2 A1 A0
A2 A1 A0
A2 A1 A0
A2 A1 A0
A2
A1
A0
A2
A1
A0
A2
A1
A0
A2
A1
A0
VHV
VHV
VHV
VHV
VHV
VHV
VHV
VHV
VHV
VCC
VCC
VCC
VCC
VCC
VCC
VCC
12.Here A2, A1 and A0 are either at VCC or GND.
13.1 stands for ‘Set’, 0 stands for ‘Not Set’, X stands for ‘don’t care’.
BYTE
ADDRESS
SLAVE
ADDRESS
S
A
C
K
A
C
K
DATA
S
T
O
P
P
BUS ACTIVITY:
MASTER
SDA LINE
S
T
A
R
T
X = Don’t Care
X
N
O
A
C
K
or
A
C
K
Figure 14. Software Write Protect (Write)
XX X X X X X X XX XX X X X
SLAVE
ADDRESS
S
N
O
A
C
K
or
A
C
K
S
T
O
P
P
BUS ACTIVITY:
MASTER
SDA LINE
S
T
A
R
T
Figure 15. Software Write Protect (Read)


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