參數(shù)資料
型號: TSC21020F-20SCHXXX
廠商: ATMEL CORP
元件分類: 數(shù)字信號處理外設(shè)
英文描述: 40-BIT, DSP-FLOATING POINT PROCESSOR, UUC
封裝: DIE
文件頁數(shù): 16/37頁
文件大?。?/td> 483K
代理商: TSC21020F-20SCHXXX
TSC21020F
Rev. E – Oct. 05, 1998
23
Memory Read
Parameter
20 MHz
Frequency
Dependency*
Unit
Parameter
Min
Max
Min
Max
Unit
Timing Requirement
tDAD
Address, Select to Data Valid
37
37 + DT
ns
tDRLD
xRD Low to Data Valid
24
24 + 5DT/8
ns
tHDA
Data Hold from Address, Select
0
ns
tHDRH
Data Hold from xRD High
–1
ns
tDAAK
xACK Delay from Address
27
27 + 7DT/8
ns
tDRAK
xACK Delay from xRD Low
15
15 + DT/2
ns
tSAK
xACK Setup before CLKIN High
14
14 + DT/4
ns
tHAK
xACK Hold after CLKIN High
0
ns
Switching Characteristic
tDARL
Address, Select to xRD Low
8
8 + 3DT/8
ns
tDAP
xPAGE Delay from Address, Select
1
ns
tDCKRL
CLKIN High to xRD Low
16
26
16 + DT/4
26 + DT/4
ns
tRW
xRD Pulse Width
26
26 + 5DT/8
ns
tRWR
xRD High to xRD, xWR Low
17
17 + 3DT/8
ns
NOTES
*
DT = tCK – 50 ns
x = PM or DM ; Address = PMA23-0, DMA31-0 ; Data = PMD47-0, DMD39-0 ; Select = PMS1-0, DMS3-0.
Figure 10. Memory Read
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