參數資料
型號: AS9C25256M2018L-200BI
廠商: ALLIANCE SEMICONDUCTOR CORP
元件分類: DRAM
英文描述: TERM. F/O CABLE SC-SC/ DPLX/RISER/10M/BLUE
中文描述: 256K X 18 DUAL-PORT SRAM, 7.5 ns, PBGA256
封裝: BGA-256
文件頁數: 17/30頁
文件大?。?/td> 1100K
代理商: AS9C25256M2018L-200BI
AS9C25512M2018L
AS9C25256M2018L
9/24/04, v.1.2
Alliance Semiconductor
P. 17 of 30
Interrupt timing wave form
[2]
Notes:
1. Parameters t
CYC
,t
CH
and t
CL
are different in Flow-through and Pipeline mode of operation and can be different for different ports (Refer AC Timing characteristics).
2. Chip Selected (CE0 = L and CE1 =H). True for both ports.
3. Address indicated is the Internal Address used and is dependent on the Address counter control inputs for that cycle.
4. 7FFFF (3FFFF for AS9C25256M2018L) is the Mailbox for port B and 7FFFE (3FFFE for AS9C25256M2018L) is the Mailbox for port A.
5. “Aa” and “Ab” refer to any other valid address other than 7FFFF or 7FFFE (3FFFF or 3FFFE for AS9C25256M2018L).
t
CYC[1]
t
CH[1]
t
CL[1]
CLK
A
R/W
A[2]
t
WS
t
WH
t
AS
t
AH
INT
A
ADDRESS
A[3]
CLK
B
R/W
B[2]
ADDRESS
B[3]
INT
B
7FFFF
t
WH
t
WS
t
CYC[1]
t
CH[1]
t
CL[1]
t
SINT
t
RINT
t
SINT
t
RINT
t
AH
t
AS
7FFFF
7FFFE
7FFFF
7FFFE
7FFFE
Don’t care
[4]
[4]
Aa
Aa
Aa
Aa
Ab
Ab
Ab
Ab
[5]
[5]
Aa
Ab
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相關代理商/技術參數
參數描述
AS9C25256M2018L-200FC 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:2.5V 512/256K x 18 Synchronous Dual-port SRAM with 3.3V or 2.5V interface
AS9C25256M2018L-200FI 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:2.5V 512/256K x 18 Synchronous Dual-port SRAM with 3.3V or 2.5V interface
AS9C25256M2018L-200TC 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:2.5V 512/256K x 18 Synchronous Dual-port SRAM with 3.3V or 2.5V interface
AS9C25256M2018L-200TI 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:2.5V 512/256K x 18 Synchronous Dual-port SRAM with 3.3V or 2.5V interface
AS9C25256M2018L-250BC 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:2.5V 512/256K x 18 Synchronous Dual-port SRAM with 3.3V or 2.5V interface