參數(shù)資料
型號: KM44S4020CT
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: 2M x 4Bit x 2 Banks Synchronous DRAM(2M x 4位 x 2組同步動態(tài)RAM)
中文描述: 2米x 4位× 2銀行同步DRAM(2米× 4位× 2組同步動態(tài)RAM)的
文件頁數(shù): 39/44頁
文件大?。?/td> 604K
代理商: KM44S4020CT
TIMING DIAGRAM - I
CMOS SDRAM
ELECTRONICS
REV. 4 Nov. '97
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Read Interrupted by Precharge Command & Read Burst Stop Cycle @Burst Length=Full page
HIGH
Row Active
(A-Bank)
: Don't care
*Note :
1. At full page mode, burst is end at the end of burst. So auto precharge is possible.
2. About the valid DQs after burst stop, it is same as the case of
Both cases are illustrated above timing diagram. See the label 0. 1, 2 on them.
But at burst write, Burst stop and RAS interrupt should be compared carefully.
Refer the timing diagram of "Full page write burst stop cycle".
3. Burst stop is valid at every burst length.
RAS interrupt.
*Note 2
Precharge
(A-Bank)
Burst Stop
Read
(A-Bank)
Read
(A-Bank)
1
2
1
2
BA
A
10
/AP
CL=2
CL=3
DQ
ADDR
CAS
RAS
CS
CKE
CLOCK
WE
DQM
QAa0
QAa1
QAa2
QAa3
QAa4
QAa0
QAa1
QAa2
QAa3
QAa4
QAb0
QAb1
QAb2
QAb3
QAb4
QAb5
QAb0
QAb1
QAb2
QAb3
QAb4
QAb5
RAa
CAa
CAb
RAa
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