PD45128163G5-A10LI-9JF 데이터 시트보기 (PDF) - Elpida Memory, Inc

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PD45128163G5-A10LI-9JF

128M-bit Synchronous DRAM 4-bank, LVTTL WTR (Wide Temperature Range)

Elpida Memory, Inc 

µPD45128441-I, 45128841-I, 45128163-I

11. Read / Write Command Interval

11.1 Read to Read Command Interval

During a read cycle, when new Read command is issued, it will be effective after /CAS latency, even if the previous

read operation does not completed. READ will be interrupted by another READ.

The interval between the commands is 1 cycle minimum. Each Read command can be issued in every clock

without any restriction.

Burst length = 4, /CAS latency = 2

T0

T1

T2

T3

T4

T5

T6

T7

T8

T9

CLK

Command

READ A READ B

Hi-Z

DQ

QA1

QB1

QB2

QB3

QB4

1cycle

11.2 Write to Write Command Interval

During a write cycle, when a new Write command is issued, the previous burst will terminate and the new burst will

begin with a new Write command. WRITE will be interrupted by another WRITE.

The interval between the commands is minimum 1 cycle. Each Write command can be issued in every clock

without any restriction.

Burst length = 4, /CAS latency = 2

T0

T1

T2

T3

T4

T5

T6

T7

T8

CLK

Command

DQ

WRITE A WRITE B

Hi-Z

DA1

DB1

DB2

DB3

DB4

1cycle

28

Preliminary Data Sheet E0233N10

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