参数资料
型号: IDT7015L12JG
厂商: IDT, Integrated Device Technology Inc
文件页数: 15/20页
文件大小: 0K
描述: IC SRAM 72KBIT 12NS 68PLCC
标准包装: 18
格式 - 存储器: RAM
存储器类型: SRAM - 双端口,异步
存储容量: 72K(8K x 9)
速度: 12ns
接口: 并联
电源电压: 4.5 V ~ 5.5 V
工作温度: 0°C ~ 70°C
封装/外壳: 68-LCC(J 形引线)
供应商设备封装: 68-PLCC(24x24)
包装: 管件
IDT7015S/L
Waveform of Interrupt Timing
High-Speed 8K x 9 Dual-Port Static RAM
(1)
t WC
Military, Industrial and Commercial Temperature Ranges
ADDR "A"
INTERRUPT SET ADDRESS
(2)
t AS
(3)
t WR
(4)
CE "A"
R/ W "A"
t INS
(3)
INT "B"
2954 drw 17
t RC
ADDR "B"
t AS
(3)
INTERRUPT CLEAR ADDRESS
(2)
CE " B"
OE "B"
t INR (3)
INT "B"
2954 drw 18
NOTES:
1. All timing is the same for left and right ports. Port “A” may be either the left or right port. Port “B” is the port opposite from “A”.
2. See Interrupt Truth Table.
3. Timing depends on which enable signal ( CE or R/ W ) is asserted last.
4. Timing depends on which enable signal ( CE or R/ W ) is de-asserted first.
Truth Table III — Interrupt Flag (1)
Left Port
Right Port
R/ W L
L
X
X
X
CE L
L
X
X
L
OE L
X
X
X
L
A 12L -A 0L
1FFF
X
X
1FFE
INT L
X
X
L (3)
H (2)
R/ W R
X
X
L
X
CE R
X
L
L
X
OE R
X
L
X
X
A 12R -A 0R
X
1FFF
1FFE
X
INT R
L (2)
H (3)
X
X
Function
Set Right INT R Flag
Reset Right INT R Flag
Set Left INT L Flag
Reset Left INT L Flag
NOTES:
1. Assumes BUSY L = BUSY R = V IH .
2. If BUSY L = V IL , then no change.
3. If BUSY R = V IL , then no change.
15
6.42
2954 tbl 16
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