參數(shù)資料
型號: DSP5685xUM
廠商: 飛思卡爾半導體(中國)有限公司
英文描述: 16-bit Digital Signal Controllers
中文描述: 16位數(shù)字信號控制器
文件頁數(shù): 33/60頁
文件大?。?/td> 836K
代理商: DSP5685XUM
External Memory Interface Timing
56854 Technical Data, Rev. 6
Freescale Semiconductor
33
Figure 4-10 External Memory Interface Timing
Figure 4-11 External Memory Interface Timing
Operating Conditions: V
SS
= V
SSIO
= V
SSA
= 0 V, V
DD
= 1.62-1.98 V, V
DDIO
= V
DDA
=
3.0–3.6V, T
A
= –40
°
to +120
°
C, C
L
< 50pF, P = 8.333ns
Characteristic
Symbol
Wait States
Configuration
D
M
Wait States
Controls
Unit
Address Valid to WR Asserted
t
AWR
WWS=0
-0.79
0.50
WWSS
ns
WWS>0
-1.98
0.69
WR Width Asserted to WR
Deasserted
t
WR
WWS=0
-0.86
0.19
WWS
ns
WWS>0
-0.01
0.00
Data Out Valid to WR Asserted
t
DWR
WWS=0
-1.52
0.00
WWSS
ns
WWS=0
- 5.69
0.25
WWS>0
-2.10
0.19
WWS>0
-4.66
0.50
Valid Data Out Hold Time after WR
Deasserted
t
DOH
-1.47
0.25
WWSH
ns
Valid Data Out Set Up Time to WR
Deasserted
t
DOS
-2.36
0.19
WWS,WWSS
ns
-4.67
0.50
Valid Address after WR
Deasserted
t
WAC
-1.60
0.25
WWSH
t
DRD
t
RDD
t
AD
t
DOH
t
DOS
t
DWR
t
RDWR
t
WAC
t
WRRD
t
WR
t
AWR
t
WRWR
t
ARDD
t
RDA
t
RDRD
t
RD
t
ARDA
Data Out
Data In
A0-Axx,CS
RD
WR
D0-D15
Note: During read-modify-write instructions and internal instructions, the address lines do not change state.
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