参数资料
型号: IDT70V525ML55BZI
厂商: IDT, Integrated Device Technology Inc
文件页数: 13/14页
文件大小: 0K
描述: IC SRAM 128KBIT 55NS 144FBGA
标准包装: 90
格式 - 存储器: RAM
存储器类型: SRAM - 三端口,异步
存储容量: 128K(8K x 16)
速度: 55ns
接口: 并联
电源电压: 2.7 V ~ 3.3 V
工作温度: -40°C ~ 85°C
封装/外壳: 144-LFBGA
供应商设备封装: 144-CABGA(7x7)
包装: 托盘
其它名称: 70V525ML55BZI
IDT70X525XML
Low Power 4K x 8 TriPort Static RAM
Interrupts
If the user chooses the interrupt function, a memory location (mailbox
or message center) is assigned to each port. Interrupt P 1 - P 2 of Port 1
( INT P 1 - P 2 ) is asserted when Port 2 writes to memory location FFE(HEX),
where a write is defined as CE = R/ W = V IL per Truth Table II. Port 1 clears
the interrupt by accessing address location FFE when BE 0 = V IL , R/ W is
a "don't care". Interrupt P 1 - P 3 of Port 1 ( INT P 1 - P 3 ) is asserted when Port
3 writes to memory location FFE (HEX), where a write is defined as CE =
R/ W = V IL . Port 1 clears the interrupt by accessing address location FFE
Truth Table II - Interrupt Flag
Port 1
Preliminary
Industrial Temperature Range
when BE 1 = V IL , R/ W is a "don't care". Port 2's interrupt flag ( INT P 2 - P 1 )
is asserted when Port 1 writes to memory location FFF (HEX), where a
write is defined as BE 0 = R/ W = V IL . Port 2 clears the interrupt by accessing
address location FFF when CE = V IL , R/ W is a "don't care". Likewise, Port
3's interrupt flag ( INT P 3 - P 1 ) is asserted when Port 1 writes to memory
location FFF (HEX), where a write is defined as BE 1 = R/ W = V IL . Port 3
clears the interrupt by accessing address location FFF when CE = V IL , R/
W is a "don't care".
Port 2 or 3
R/ W
BE 0
BE 1
OE
A 11 - A 0 INT P 1 - P 2 INT P 1 - P 3
R/ W
CE
OE
A 11 - A 0
INT P x - P 1
Function
L
X
L
X
X
X
X
X
L
X
H
X
X
L
X
H
H
X
L
X
X
H
X
L
X
X
X
X
X
L
X
L
FFF
X
FFF
X
X
FFE
X
FFE
X
X
X
X
L
H
X
X
X
X
X
X
X
X
L
H
X
X
X
X
L
X
L
X
X
L
X
L
L
X
L
X
X
L
X
L
X
X
X
X
X
FFF
X
FFF
FFE
X
FFE
X
L
H
L
H
X
X
X
X
Set P2 INT Flag
Reset P2 INT Flag
Set P3 INT Flag
Reset P3 INT Flag
Set P1 INT P1-P2 Flag (1)
Reset P1 INT P1-P2 Flag
Set P1 INT P1-P3 Flag (2)
Reset P1 INT P1-P3 Flag
NOTE:
1. Port 2 sets the INT P1 - P2 flag on Port 1 so all signals refer to Port 2.
2. Port 3 sets the INT P1 - P3 flag on Port 1 so all signals refer to Port 3.
13
6.42
5681 tbl 14
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