M34C02-LDW1G View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

M34C02-LDW1G

2 Kbit Serial I²C Bus EEPROM for DIMM serial presence detect

STMicroelectronics 

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Signal description

Figure 5. I2C bus protocol

SCL

M34C02-W, M34C02-L, M34C02-R

SDA

START

Condition

SDA

Input

SDA

Change

STOP

Condition

SCL

SDA

1

2

3

MSB

7

8

9

ACK

START

Condition

SCL

1

2

3

7

8

9

SDA

MSB

ACK

STOP

Condition

AI00792B

Table 2.

Device Select Code

Device Type Identifier(1)

Chip Enable Address(2) RW

b7

b6

b5

b4

b3

b2

b1

b0

Memory Area Select Code

(two arrays)

1

0

1

0

E2

E1

E0

RW

Protection Register Select

Code

0

1

1

0

E2

E1

E0

RW

1. The most significant bit, b7, is sent first.

2. E0, E1 and E2 are compared against the respective external pins on the memory device.

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