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參數(shù)資料
| 型號(hào)： | 70V9389L9PRFI8 |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | SRAM |
| 英文描述： | 64K X 18 DUAL-PORT SRAM, 20 ns, PQFP128 |
| 封裝： | TQFP-128 |
| 文件頁(yè)數(shù)： | 8/19頁(yè) |
| 文件大?。?/td> | 211K |
| 代理商： | 70V9389L9PRFI8 |
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6.42
16
IDT70V9389/289L
High-Speed 3.3V 64K x18/x16 Dual-Port Synchronous Pipelined Static RAM
Industrial & Commercial Temperature Ranges
ADDRESS
(4)
An
D0
tCH2
tCL2
tCYC2
Q0
Q1
0
CLK
DATAIN
R/W
CNTRST
4856 drw 17
INTERNAL
(3)
ADDRESS
ADS
CNTEN
tSRST tHRST
tSD
tHD
tSW tHW
COUNTER
RESET
WRITE
ADDRESS 0
READ
ADDRESS 0
READ
ADDRESS 1
READ
ADDRESS n
Qn
An + 1
An + 2
READ
ADDRESS n+1
DATAOUT
(5)
tSA tHA
1
An
An + 1
(6)
Ax
tSAD tHAD
tSCN tHCN
(6)
Timing Waveform of Write with Address Counter Advance
(Flow-Through or Pipelined Outputs)(1)
Timing Waveform of Counter Reset (Pipelined Outputs)(2)
ADDRESS
An
CLK
DATAIN
Dn
Dn + 1
Dn + 2
ADS
CNTEN(7)
tCH2
tCL2
tCYC2
4856 drw 16
INTERNAL
(3)
ADDRESS
An
(7)
An + 1
An + 2
An + 3
An + 4
Dn + 3
Dn + 4
tSA
tHA
tSAD tHAD
WRITE
COUNTER HOLD
WRITE WITH COUNTER
WRITE
EXTERNAL
ADDRESS
WRITE
WITH COUNTER
tSD tHD
NOTES:
1.
CE0, UB, LB, and R/W = VIL; CE1 and CNTRST = VIH.
2. CE0, UB, LB = VIL; CE1 = VIH.
3. The "Internal Address" is equal to the "External Address" when
ADS = VIL and equals the counter output when ADS = VIH.
4. Addresses do not have to be accessed sequentially since
ADS = VIL constantly loads the address on the rising edge of the CLK; numbers are for reference use only.
5. Output state (High, Low, or High-impedance) is determined by the previous cycle control signals.
6. No dead cycle exists during counter reset. A READ or WRITE cycle may be coincidental with the counter reset cycle. ADDR0 will be accessed. Extra cycles
are shown here simply for clarification.
7.
CNTEN = VIL advances Internal Address from ‘An’ to ‘An +1’. The transition shown indicates the time required for the counter to advance.
The ‘An +1’ Address is written to during this cycle.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IDT70V9289L9PRF8 | 64K X 16 DUAL-PORT SRAM, 20 ns, PQFP128 |
| 710026-3 | 25 mm2, COPPER ALLOY, TIN FINISH, WIRE TERMINAL |
| 710027-5 | 35 mm2, COPPER ALLOY, TIN FINISH, WIRE TERMINAL |
| 710027-2 | 35 mm2, COPPER ALLOY, TIN FINISH, WIRE TERMINAL |
| 710027-1 | 35 mm2, COPPER ALLOY, TIN FINISH, WIRE TERMINAL |
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