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參數(shù)資料
| 型號： | AS4SD4M16A2-8 |
| 英文描述： | x16 SDRAM |
| 中文描述： | x16內(nèi)存 |
| 文件頁數(shù)： | 22/51頁 |
| 文件大小： | 1071K |
| 代理商： | AS4SD4M16A2-8 |
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S DR A M
AS4SD16M16
Austin Semiconductor, Inc.
AS4SD16M16
Rev. 1.5 6/03
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
22
TRUTH TABLE 2: CKE
1,2,3,4
CKEn-1
CKEn
CURRENT STATE
Power-Down
Self Refresh
Clock Suspend
Power-Down
Self Refresh
Clock Suspend
All Banks Idle
All Banks Idle
Reading or Writing
COMMANDn
X
X
X
ACTIONn
NOTES
Maintain Power-Down
Maintain Self Refresh
Maintain Clock Suspend
COMMAND INHIBIT or NOP Exit Power-Down
COMMAND INHIBIT or NOP Exit Self Refresh
X
COMMAND INHIBIT or NOP Power-Down Entry
AUTO REFRESH
VALID
See Truth Table 3
5
6
7
Exit Clock Suspend
Self Refresh Entry
Clock Suspend Entry
H
H
L
L
H
H
L
L
NOTES:
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 t
CKS
is met).
6. Exiting self refresh at clock edge
n
will put the device in the all banks idle state once t
XSR
is met. COMMAND INHIBIT or NOP
commands should be issued on any clock edges occurring during the t
XSR
period. A minimum of two NOP commands must be
provided during t
XSR
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
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS5010 | Voltage Reference |
| AS5010GN | Voltage Reference |
| AS5010HN | Voltage Reference |
| AS5010JT | Voltage Reference |
| AS5010KT | Voltage Reference |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS4SD4M16DG-10/IT | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4 Meg x 16 SDRAM Synchronous DRAM Memory |
| AS4SD4M16DG-10/XT | 制造商:Micross Components 功能描述:SDRAM-SDR,64MB - Trays |
| AS4SD4M16DG-8/ET | 制造商:Micross Components 功能描述:SDRAM-SDR,64MB - Trays |
| AS4SD4M16DG-8/IT | 制造商:Micross Components 功能描述:SDRAM-SDR,64MB - Trays |
| AS4SD4M16DG-8/XT | 制造商:Micross Components 功能描述:SDRAM-SDR,64MB - Trays |
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