- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄294758 > 97SD3240RPQI (MAXWELL TECHNOLOGIES) 1.25Gb SDRAM 8-Meg X 40-Bit X 4-Banks PDF資料下載
參數(shù)資料
| 型號： | 97SD3240RPQI |
| 廠商： | MAXWELL TECHNOLOGIES |
| 元件分類： | DRAM |
| 英文描述： | 1.25Gb SDRAM 8-Meg X 40-Bit X 4-Banks |
| 中文描述： | 32M X 40 SYNCHRONOUS DRAM, 6 ns, QFP132 |
| 封裝： | STACK, QFP-132 |
| 文件頁數(shù)： | 29/39頁 |
| 文件大?。?/td> | 759K |
| 代理商： | 97SD3240RPQI |
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頁當前第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
97SD3240
M
em
o
ry
35
All data sheets are subject to change without notice
2006 Maxwell Technologies
All rights reserved.
1.25Gb (8-Meg X 40-Bit X 4-Banks) SDRAM
05.10.06 Rev 4
Writing
Refresh
Auto-Refresh: All the banks must be precharged before executing an auto-refresh command. Since the
auto-refresh command updates the internal counter every time it is executed and determines the banks and
the ROW addresses to be refreshed, external address specification is not required. The refresh cycle is
8192 cycles/6.4 ms. (8192 cycles are requires to refresh all the ROW addresses.) The output buffer
becomes High-Z after auto-refresh start. In addition, since a precharge has been completed by an internal
operation after the auto-refresh, an additional precharge operation by the precharge command is not
required.
Self-refresh1: After executing a self-refresh command, the self-refresh operation continues while CKE is
held Low. During self-refresh operation, all ROW addresses are refreshed by the internal refresh timer. A
self-refresh is terminated by a self-refresh exit command. Before and after self-refresh mode, execute auto-
refresh to all refresh addresses in or within 6.4ms period on the condition (1) and (2) below.
(1) Enter self-refresh mode within 7.8 us after either burst refresh or distributed refresh at equal interval until
all refresh addresses are completed.
(2) Start burst refresh or distributed refresh at equal interval to all refresh addreses within 7.8 us after exiting
from self-refresh mode.
Others
Power-down mode: The SDRAM enters power-down mode when CKE goes Low in the IDLE state. In
power-down mode, power consumption is suppressed by deactivating the input initial circuit. Power-down
mode continues while CKE is held Low. In addition, by setting CKE to High, the SDRAM exits from the
1. Self refresh mode should only be used at temperatures below 70°C.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 97SD3240RPQK | 1.25Gb SDRAM 8-Meg X 40-Bit X 4-Banks |
| 97SD3240 | 1.25Gb SDRAM 8-Meg X 40-Bit X 4-Banks |
| 97SD3248RPQE | 1.5Gb SDRAM 8-Meg X 48-Bit X 4-Banks |
| 97SD3248 | RESISTOR WW POWER 700 OHM 5W |
| 98030-1014 | 96 CONTACT(S), MALE, STRAIGHT TWO PART BOARD CONNECTOR, PRESS FIT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 97SD3240RPQK | 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:1.25Gb SDRAM 8-Meg X 40-Bit X 4-Banks |
| 97SD3248 | 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:1.5Gb SDRAM 8-Meg X 48-Bit X 4-Banks |
| 97SD3248_06 | 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:1.5Gb SDRAM 8-Meg X 48-Bit X 4-Banks |
| 97SD3248RPQE | 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:1.5Gb SDRAM 8-Meg X 48-Bit X 4-Banks |
| 97SD3248RPQH | 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:1.5Gb SDRAM 8-Meg X 48-Bit X 4-Banks |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。