參數(shù)資料
型號: SPAK56F8346FV60
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 數(shù)字信號處理
英文描述: 16-BIT, 240 MHz, OTHER DSP, PQFP144
封裝: 20 X 20 MM, 0.50 MM PITCH, 1.40 MM HEIGHT, PLASTIC, LQFP-144
文件頁數(shù): 37/156頁
文件大?。?/td> 2219K
代理商: SPAK56F8346FV60
External Memory Interface Timing
MOTOROLA
56F8346 Technical Data
131
Preliminary
Table 10-17 External Memory Interface Timing
Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98 V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL ≤ 50pF, P = 8.333ns
Characteristic
Symbol
Wait States
Configuration
DM
Wait States
Controls
Unit
Address Valid to WR Asserted
tAWR
WWS=0
TBD
WWSS
ns
WWS>0
TBD
WR Width Asserted to WR
Deasserted
tWR
WWS=0
TBD
WWS
ns
WWS>0
TBD
Data Out Valid to WR Asserted
tDWR
WWS=0
TBD
WWSS
ns
WWS=0
TBD
WWS>0
TBD
WWS>0
TBD
Valid Data Out Hold Time after WR
Deasserted
tDOH
TBD
WWSH
ns
Valid Data Out Set Up Time to WR
Deasserted
tDOS
-2.051
0.5 + DCA
WWS,WWSS
ns
-8.995
0.5
Valid Address after WR
Deasserted
tWAC
TBD
WWSH
ns
RD Deasserted to Address Invalid
tRDA
TBD
RWSH
ns
Address Valid to RD Deasserted
tARDD
TBD
RWSS,RWS
ns
Valid Input Data Hold after RD
Deasserted
tDRD
TBD
N/A1
1.
N/A since device captures data before it deasserts RD
ns
RD Assertion Width
tRD
TBD
RWS
ns
Address Valid to Input Data Valid
tAD
-14.798
1.00
RWSS,RWS
ns
-19.661
1.25 + DCA
Address Valid to RD Asserted
tARDA
TBD
RWSS
ns
RD Asserted to Input Data Valid
tRDD
TBD
RWSS,RWS
ns
TBD
WR Deasserted to RD Asserted
tWRRD
TBD
WWSH,RWSS
ns
RD Deasserted to RD Asserted
tRDRD
TBD2
2.
If RWSS = RWSH = 0, RD does not deassert during back-to-back reads and D=0.00 should be used.
TBD
RWSS,RWSH
MDAR,BMDAR
ns
WR Deasserted to WR Asserted
tWRWR
WWS=0
TBD
WWSS, WWSH
ns
WWS>0
TBD
RD Deasserted to WR Asserted
tRDWR
TBD
MDAR, BMDAR,
RWSH, WWSS
ns
TBD
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