- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄361238 > Q67100-Q1044 (SIEMENS AG) 256 K x 4-Bit Dynamic RAM Low Power 256 K x 4-Bit Dynamic RAM PDF資料下載
參數(shù)資料
| 型號： | Q67100-Q1044 |
| 廠商： | SIEMENS AG |
| 英文描述： | 256 K x 4-Bit Dynamic RAM Low Power 256 K x 4-Bit Dynamic RAM |
| 中文描述： | 256畝× 4位動態(tài)隨機存儲器的低功耗256畝× 4位動態(tài)隨機存儲器 |
| 文件頁數(shù)： | 12/53頁 |
| 文件大?。?/td> | 418K |
| 代理商： | Q67100-Q1044 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁當前第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁
HYB 39S64400/800/160BT(L)
64-MBit Synchronous DRAM
Data Book
12
12.99
terminate once the burst length has been reached. In other words, unlike burst length of 2, 3 or 8,
full page burst continues until it is terminated using another command.
Similar to the page mode of conventional DRAM’s, burst read or write accesses on any column
address are possible once the RAS cycle latches the sense amplifiers. The maximum
t
RAS
or the
refresh interval time limits the number of random column accesses. A new burst access can be
done even before the previous burst ends. The interrupt operation at every clock cycle is supported.
When the previous burst is interrupted, the remaining addresses are overridden by the new address
with the full burst length. An interrupt which accompanies an operation change from a read to a write
is possible by exploiting DQM to avoid bus contention.
When two or more banks are activated sequentially, interleaved bank read or write operations are
possible. With the programmed burst length, alternate access and precharge operations on two or
more banks can realize fast serial data access modes among many different pages. Once two or
more banks are activated, column to column interleave operation can be done between different
pages.
Refresh Mode
SDRAM has two refresh modes, Auto Refresh and Self Refresh. Auto Refresh is similar to the CAS
-before-RAS refresh of conventional DRAMs. All of banks must be precharged before applying any
refresh mode. An on-chip address counter increments the word and the bank addresses and no
bank information is required for both refresh modes.
The chip enters the Auto Refresh mode, when RAS and CAS are held low and CKE and WE are
held high at a clock timing. The mode restores word line after the refresh and no external precharge
Burst Length and Sequence
Burst
Length
Starting
Address
(A2 A1 A0)
Sequential Burst Addressing
(decimal)
Interleave Burst
Addressing
(decimal)
2
xx0
xx1
0, 1
1, 0
0, 1
1, 0
4
x00
x01
x10
x11
0, 1, 2, 3
1, 2, 3, 0
2, 3, 0, 1
3, 0, 1, 2
0, 1, 2, 3
1, 0, 3, 2
2, 3, 0, 1
3, 2, 1, 0
8
000
001
010
011
100
101
110
111
0 1 2 3 4 5 6 7
1 2 3 4 5 6 7 0
2 3 4 5 6 7 0 1
3 4 5 6 7 0 1 2
4 5 6 7 0 1 2 3
5 6 7 0 1 2 3 4
6 7 0 1 2 3 4 5
7 0 1 2 3 4 5 6
0 1 2 3 4 5 6 7
1 0 3 2 5 4 7 6
2 3 0 1 6 7 4 5
3 2 1 0 7 6 5 4
4 5 6 7 0 1 2 3
5 4 7 6 1 0 3 2
6 7 4 5 2 3 0 1
7 6 5 4 3 2 1 0
Full Page
(optional)
nnn
Cn, Cn+1, Cn+2,.....
not supported
相關PDF資料 |
PDF描述 |
|---|---|
| Q67100-Q1049 | 4M x 4-Bit Dynamic RAM |
| Q67100-Q1050 | CAP 6.8UF 35V 20% TANT SMD-7343-31 TR-7 |
| Q67100-Q1051 | 4M x 4-Bit Dynamic RAM |
| Q67100-Q1054 | 256 K x 4-Bit Dynamic RAM Low Power 256 K x 4-Bit Dynamic RAM |
| Q67100-Q957 | 2M x 36-Bit Dynamic RAM Module |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| Q67100-Q1049 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:4M x 4-Bit Dynamic RAM 2k & 4k Refresh |
| Q67100-Q1050 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:4M x 4-Bit Dynamic RAM 2k & 4k Refresh |
| Q67100-Q1051 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:4M x 4-Bit Dynamic RAM |
| Q67100-Q1054 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:256 K x 4-Bit Dynamic RAM Low Power 256 K x 4-Bit Dynamic RAM |
| Q67100-Q1056 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:1 M x 1-Bit Dynamic RAM Low Power 1 M ⅴ 1-Bit Dynamic RAM |
發(fā)布緊急采購，3分鐘左右您將得到回復。