Data Sheet.
HY[B/E]18L512160BF-7.5
512-Mbit Mobile-RAM
2.4.5.1
READ Burst Termination
Data from any READ burst may be truncated using the BURST TERMINATE command (see Page 35), provided that Auto
Precharge was not activated. The BURST TERMINATE latency is equal to the CAS latency (that is, the BURST TERMINATE
command must be issued x clock cycles before the clock edge at which the last desired data element is valid, where x equals
the CAS latency for READ bursts minus 1). This is shown in Figure 18. The BURST TERMINATE command may be used to
terminate a full-page READ which does not self-terminate.
FIGURE 18
Terminating a READ Burst
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"URST ,ENGTH ꢁ ꢂ IN THE CASE SHOWNꢃ
ꢄ SUBSEQUENT ELEMENTS OF $ATA /UT ARE PROVIDED IN THE PROGRAMMED ORDER FOLLOWING $/ Nꢃ 4HE
BURST IS TERMINATED AFTER THE ꢅRD DATA ELEMENTꢃ
2.4.5.2
Clock Suspend Mode for READ Cycles
Clock suspend mode allows the extension of any read burst in progress by a variable number of clock cycles. As long as CKE
is registered LOW, the following internal clock pulse(s) will be ignored and data on DQ will remain driven, as shown in
Figure 19.
Rev. 1.22, 2006-12
24
01132005-06IU-IGVM
QIMONDA [ QIMONDA AG ]
