M34E02-FMB1TP datasheet(17/34 Pages) STMICROELECTRONICS

Teilenummer	M34E02-FMB1TP

Bauteilbeschribung	2 Kbit serial presence detect (SPD) EEPROM for double data rate (DDR1 and DDR2) DRAM modules

PDF	34 Pages

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Hersteller	STMICROELECTRONICS [STMicroelectronics]

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17 / 34 page

M34E02, M34E02-F

Device operation

Doc ID 10367 Rev 10

17/34

3.8.4

Acknowledge in Read mode

For all Read commands, the device waits, after each byte read, for an acknowledgment

during the 9th bit time. If the bus master does not drive Serial Data (SDA) low during this

time, the device terminates the data transfer and switches to its Standby mode.

Figure 10.

Read mode sequences

The seven most significant bits of the device select code of a Random Read (in the 1st and 3rd bytes) must

be identical.

Dev select *

Byte address

Dev select

Data out 1

AI01942b

Data out N

Current

Address

Read

Dev select

Data out

Random

Address

Read

Dev select *

Data out

Sequential

Current

Read

Data out N

Dev select *

Byte address

Sequential

Random

Read

Dev select *

Data out 1

ACK

R/W

NO ACK

ACK

R/W

ACK

R/W

ACK

NO ACK

R/W

NO ACK

ACK

R/W

ACK

R/W

ACK

NO ACK

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