HYE18L256169BFX-7.5 datasheet(30/47 Pages) QIMONDA

Part #	HYE18L256169BFX-7.5

Description	DRAMs for Mobile Applications 256-Mbit Mobile-RAM

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Manufacturer	QIMONDA [Qimonda AG]

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Data Sheet

30

Rev. 1.01, 2007-01

07062006-V6ZK-PGR3

HY[B/E]18L256169BFX-7.5

256-Mbit Mobile-RAM

Functional Description

In the case of a WRITE being executed to completion, a PRECHARGE command issued at the optimum time (as

described above) provides the same operation that would result from the same WRITE burst with Auto Precharge

enabled. The disadvantage of the PRECHARGE command is that it requires that the command and address

busses be available at the appropriate time to issue the command. The advantage of the PRECHARGE command

is that it can be used to truncate bursts.

Figure 34

WRITE to PRECHARGE Timing

2.4.7

BURST TERMINATE

Figure 35

BURST TERMINATE Command

The BURST TERMINATE command is used to truncate

READ or WRITE bursts (with Auto Precharge

disabled). The most recently registered READ or

WRITE command prior to the BURST TERMINATE

command will be truncated, as shown in Figure 18 and

Figure 30, respectively.

The BURST TERMINATE command is not allowed for

truncation of READ or WRITE bursts with Auto

Precharge enabled.

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