STTS424E02BDA3E STMICROELECTRONICS [STMicroelectronics], STTS424E02BDA3E Datasheet - Page 13

• Manufacturer Part Number: STTS424E02BDA3E
• Description: Memory module temperature sensor with a 2 Kb SPD EEPROM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

STTS424E02
3.2
Figure 6.
SMBus/I
The physical address for the TS is different than that used by the EEPROM. The TS physical
address is binary 0 0 1 1 A2 A1 A0 RW, where A2, A1, and A0 are the three slave sub-
address pins, and the LSB “RW” is the READ/WRITE flag.
The EEPROM physical address is binary 1 0 1 0 A2 A1 A0 RW for the memory array and is
0 1 1 0 A2 A1 A0 RW for permanently set write protection mode.
SDA
(continued)
SDA
SCL
(continued)
SCL
2
SMBus/I
C slave sub-address decoding
Master
Start
by
2
1
0
D15
C write to pointer register, followed by a write data word
1
0
D14
Address Byte
MSB Data Byte
1
D13
1
D12
A2 A1 A0 R/W
D11
D10
D9
STTS424E02
STTS424E02
D8
ACK
by
ACK
9
by
9
0
1
D7
1
0
D6
0
Pointer Byte
LSB Data Byte
D5
0
D4
Temperature sensor operation
0
D3
D2 D1 D0
D2
D1
STTS424E02
STTS424E02
D0
ACK
No ACK
by
9
by
9
AI14012
Master
Cond.
Stop
by
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