参数资料
型号: IDT70V9269L12PRFI8
厂商: IDT, Integrated Device Technology Inc
文件页数: 3/19页
文件大小: 0K
描述: IC SRAM 256KBIT 12NS 128TQFP
标准包装: 1,000
格式 - 存储器: RAM
存储器类型: SRAM - 双端口,同步
存储容量: 256K(16K x 16)
速度: 12ns
接口: 并联
电源电压: 3 V ~ 3.6 V
工作温度: -40°C ~ 85°C
封装/外壳: 128-LQFP
供应商设备封装: 128-TQFP(14x20)
包装: 带卷 (TR)
其它名称: 70V9269L12PRFI8
IDT70V9279/69S/L
High-Speed 32/16K x 16 Dual-Port Synchronous Static RAM
Pin Names
Industrial and Commercial Temperature Ranges
Left Port
CE 0L, CE 1L
R/ W L
OE L
A 0L - A 14L (1)
I/O 0L - I/O 15L
CLK L
UB L
LB L
Right Port
CE 0R, CE 1R
R/ W R
OE R
A 0R - A 14R (1)
I/O 0R - I/O 15R
CLK R
UB R
LB R
Names
Chip Enables (3)
Read/Write Enable
Output Enable
Address
Data Input/Output
Clock
Upper Byte Select (2)
Lower Byte Select (2)
ADS L
CNTEN L
CNTRST L
FT /PIPE L
ADS R
CNTEN R
CNTRST R
FT /PIPE R
V DD
V SS
Address Strobe Enable
Counter Enable
Counter Reset
Flow-Through / Pipeline
Power (3.3V)
Ground (0V)
NOTES:
1. Address A 14X is a NC for IDT70V9269.
2. LB and UB are single buffered regardless of state of FT /PIPE.
3. CE 0 and CE 1 are single buffered when FT /PIPE = V IL ,
CE 0 and CE 1 are double buffered when FT /PIPE = V IH ,
i.e. the signals take two cycles to deselect.
3743 tbl 01
Truth Table I—Read/Write and Enable Control (1,2,3)
OE
X
X
X
X
X
X
L
L
L
H
CLK
CE 0 (5)
H
X
L
L
L
L
L
L
L
L
CE 1 (5)
X
L
H
H
H
H
H
H
H
H
UB (4)
X
X
H
L
H
L
L
H
L
L
LB (4)
X
X
H
H
L
L
H
L
L
L
R/ W
X
X
X
L
L
L
H
H
H
X
Upper Byte
I/O 8-15
High-Z
High-Z
High-Z
D IN
High-Z
DATA IN
DATA OUT
High-Z
DATA OUT
High-Z
Lower Byte
I/O 0-7
High-Z
High-Z
High-Z
High-Z
DATA IN
DATA IN
High-Z
DATA OUT
DATA OUT
High-Z
Deselected –Power Down
Deselected –Power Down
Both Bytes Deselected
Write to Upper Byte Only
Write to Lower Byte Only
Write to Both Bytes
Read Upper Byte Only
Read Lower Byte Only
Read Both Bytes
Outputs Disabled
MODE
3743 tbl 02
NOTES:
1. "H" = V IH, "L" = V IL, "X" = Don't Care.
2. ADS , CNTEN , CNTRST = X.
3. OE is an asynchronous input signal.
4
LB and UB are single buffered regardless of state of FT /PIPE.
5. CE o and CE 1 are single buffered when FT /PIPE = V IL . CE o and CE 1 are double buffered when FT /PIPE = V IH , i.e. the signals take two cycles to deselect.
3
6.42
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