欢迎访问ic37.com |
会员登录 免费注册
发布采购

AS4SD4M16DG-10/XT 参数 Datasheet PDF下载

AS4SD4M16DG-10/XT图片预览
型号: AS4SD4M16DG-10/XT
PDF下载: 下载PDF文件 查看货源
内容描述: 4梅格×16 SDRAM同步动态随机存取存储 [4 Meg x 16 SDRAM Synchronous DRAM Memory]
分类和应用: 存储内存集成电路光电二极管动态存储器时钟
文件页数/大小: 50 页 / 1139 K
品牌: AUSTIN [ AUSTIN SEMICONDUCTOR ]
 浏览型号AS4SD4M16DG-10/XT的Datasheet PDF文件第21页浏览型号AS4SD4M16DG-10/XT的Datasheet PDF文件第22页浏览型号AS4SD4M16DG-10/XT的Datasheet PDF文件第23页浏览型号AS4SD4M16DG-10/XT的Datasheet PDF文件第24页浏览型号AS4SD4M16DG-10/XT的Datasheet PDF文件第26页浏览型号AS4SD4M16DG-10/XT的Datasheet PDF文件第27页浏览型号AS4SD4M16DG-10/XT的Datasheet PDF文件第28页浏览型号AS4SD4M16DG-10/XT的Datasheet PDF文件第29页  
SDRAM  
AS4SD4M16  
Austin Semiconductor, Inc.  
TRUTH TABLE 2-CKE1,2,3,4  
CKEn-1  
CKEn  
CURRENT STATE  
COMMANDn  
ACTIONn  
NOTES  
Power-Down  
Self Refresh  
Clock Suspend  
X
X
X
Maintain Power-Down  
Maintain Self Refresh  
Maintain Clock Suspend  
Exit Power-Down  
L
L
Power-Down  
COMMAND INHIBIT or NOP  
COMMAND INHIBIT or NOP  
X
COMMAND INHIBIT or NOP  
AUTO REFRESH  
VALID  
5
6
7
L
H
Self Refresh  
Exit Self Refresh  
Clock Suspend  
All Banks Idle  
All Banks Idle  
Reading or Writing  
Exit Clock Suspend  
Power-Down Entry  
Self Refresh Entry  
Clock Suspend Entry  
H
H
L
See Truth Table 3  
H
NOTE:  
1. CKE n is the logic state of CKE at clock edge n; CKE n-1 was the state of CKE at the previous clock edge.  
2. Current state is the state of the SDRAM immediately prior to clock edge n.  
3. COMMAND n is the command registered at clock edge n, and ACTION n is a result of COMMAND n .  
4. All states and sequences not shown are illegal or reserved.  
5. Exiting power-down at clock edge n will put the device in the all banks idle state in time for clock edge n + 1  
(provided that tCKS is met).  
6. Exiting self refresh at clock edge n will put the device in the all banks idle state once tXSR is met. COMMAND  
INHIBIT or NOP commands should be issued on any clock edges occurring during the tXSR period. A  
minimum of two NOP commands must be provided during tXSR period.  
7. After exiting clock suspend at clock edge n, the device will resume operation and recognize the next  
command at clock edge n + 1.  
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.  
AS4SD4M16  
Rev. 1.5 10/01  
25  
 复制成功!