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參數資料
型號: W942516CH
廠商: WINBOND ELECTRONICS CORP
英文描述: 4M X 4 BANKS X 16 BIT DDR SDRAM
中文描述: 4米× 4銀行× 16位DDR SDRAM
文件頁數: 28/47頁
文件大小: 2809K
代理商: W942516CH
W942516CH
- 28 -
3.
CAS
Latency field (A6 to A4)
This field specifies the number of clock cycles from the assertion of the Read command to the first
data read. The minimum values of
CAS
Latency depends on the frequency of CLK.
A6
A5
A4
CAS Latency
Reserved
Reserved
2
3
Reserved
Reserved
2.5
Reserved
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
4. DLL Reset bit (A8)
This bit is used to reset DLL. When the A8 bit is "1", DLL is reset.
5. Mode Register /Extended Mode register change bits (BS0, BS1)
These bits are used to select MRS/EMRS.
BS1
0
0
1
BS0
0
1
x
A12-A0
Regular MRS Cycle
Extended MRS Cycle
Reserved
6. Extended Mode Register field
1) DLL Switch field (A0)
This bit is used to select DLL enable or disable
A0
0
1
DLL
Enable
Disable
2) Output Driver Size Control field (A1)
This bit is used to select Output Driver Size, both Full strength and Half strength are based on
JEDEC standard.
A1
0
1
Output Driver
Full Strength
Half Strength
7. Reserved field
Test mode entry bit (A7)
This bit is used to enter Test mode and must be set to "0" for normal operation.
Reserved bits (A9, A10, A11, A12)
These bits are reserved for future operations. They must be set to "0" for normal operation.
相關PDF資料
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相關代理商/技術參數
參數描述
W9425G6DH 制造商:WINBOND 制造商全稱:Winbond 功能描述:4M X 4 BANKS X 16 BITS DDR SDRAM
W9425G6EH 制造商:WINBOND 制造商全稱:Winbond 功能描述:4 M 】 4 BANKS 】 16 BITS DDR SDRAM
W9425G6EH_0812 制造商:WINBOND 制造商全稱:Winbond 功能描述:4 M × 4 BANKS × 16 BITS DDR SDRAM
W9425G6EH-5 功能描述:IC DDR-400 SDRAM 256MB 66TSSOPII RoHS:是 類別:集成電路 (IC) >> 存儲器 系列:- 標準包裝:1,000 系列:- 格式 - 存儲器:EEPROMs - 串行 存儲器類型:EEPROM 存儲容量:4K (512 x 8) 速度:400kHz 接口:I²C,2 線串口 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC(0.173",4.40mm 寬) 供應商設備封裝:8-MFP 包裝:帶卷 (TR)
W9425G6EH-5I 制造商:Winbond Electronics Corp 功能描述: