參數(shù)資料
型號(hào): K4S160822D
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: 2Mx8 SDRAM 1M x 8bit x 2 Banks Synchronous DRAM LVTTL
中文描述: 2Mx8 SDRAM的1M × 8位× 2銀行同步DRAM LVTTL
文件頁數(shù): 42/46頁
文件大小: 1183K
代理商: K4S160822D
KM48S2120D
CMOS SDRAM
- 42
Rev.1.0 (Mar. 1999)
0
1
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8
9
10
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18
19
Burst Read Single bit Write Cycle @Burst Length=2
HIGH
Row Active
(A-Bank)
Row Active
(A-Bank)
Write with
Auto Precharge
(B-Bank)
: Don't care
*Note :
1. BRSW modes is enabled by setting A
9
"High" at MRS (Mode Register Set).
At the BRSW Mode, the burst length at write is fixed to "1" regaredless of programmed burst length.
2. When BRSW write command with auto precharge is executed, keep it in mind that t
RAS
should not be violated.
Auto precharge is executed at the burst-end cycle, so in the case of BRSW write command,
the next cycle starts the precharge.
Write
(A-Bank)
*Note 1
Row Active
(B-Bank)
Read
(A-Bank)
Read with
Auto Precharge
(A-Bank)
Precharge
(A-Bank)
*Note 2
BA
A
10
/AP
CL=2
CL=3
DQ
ADDR
CAS
RAS
CS
CKE
CLOCK
WE
DQM
DAa0
DAa0
QAb0
QAb1
QAb0
QAb1
DBc0
DBc0
QAd0
QAd1
QAd0
QAd1
RAa
CAa
RBb
CAb
RAc
CBc
CAd
RAc
RAa
RBb
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