參數(shù)資料
型號(hào)： UPD4564841
廠商： Elpida Memory, Inc.
英文描述： 64M-bit Synchronous DRAM 4-bank, LVTTL
中文描述： 6400位同步DRAM 4銀行，LVTTL
文件頁數(shù)： 31/85頁
文件大?。?/td> 919K
代理商： UPD4564841
Data Sheet E0149N10
31
μ
PD4564441, 4564841, 4564163
12. Burst Termination
There are two methods to terminate a burst operation other than using a Read or a Write command. One is the
burst stop command and the other is the precharge command.
12.1 Burst Stop Command
During a read cycle, when the burst stop command is issued, the burst read data are terminated and the data bus
goes to Hi-Z after the /CAS latency from the burst stop command.
Read
Command
CLK
T0
T2
T1
T3
T4
T5
T6
T7
Burst length = X
Q1
Q2
Q3
DQ
/CAS latency = 2
Hi-Z
Q1
Q2
Q3
DQ
/CAS latency = 3
Hi-Z
BST
Remark
BST: Burst stop command
During a write cycle, when the burst stop command is issued, the burst write data are terminated and data bus goes
to Hi-Z at the same clock with the burst stop command.
D2
D3
D4
Write
DQ
Command
/CAS latency = 2, 3
CLK
T0
T2
T1
T3
T4
T5
T6
T7
Burst length = X
BST
Hi-Z
D1
Remark
BST: Burst stop command
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