參數(shù)資料
型號(hào): ADSP-2181BS-115
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號(hào)處理
英文描述: DSP Microcomputer
中文描述: 24-BIT, 14.4 MHz, OTHER DSP, PQFP128
封裝: PLASTIC, QFP-128
文件頁(yè)數(shù): 18/32頁(yè)
文件大?。?/td> 290K
代理商: ADSP-2181BS-115
REV. D
ADSP-2181
–18–
Parameter
Min
Max
Unit
Memory Write
Switching Characteristics
:
t
DW
t
DH
t
WP
t
WDE
t
ASW
t
DDR
t
CWR
t
AW
t
WRA
t
WWR
Data Setup before
WR
High
Data Hold after
WR
High
WR
Pulsewidth
WR
Low to Data Enabled
A0–A13,
xMS
Setup before
WR
Low
Data Disable before
WR
or
RD
Low
CLK OUT High to
WR
Low
A0–A13,
xMS
, Setup before
WR
Deasserted
A0–A13,
xMS
Hold after
WR
Deasserted
WR
High to
RD
or
WR
Low
0.5t
CK
– 7 + w
0.25t
CK
– 2
0.5t
CK
– 5 + w
0
0.25t
CK
– 4
0.25t
CK
– 4
0.25t
CK
– 5
0.75t
CK
– 9 + w
0.25t
CK
– 3
0.5t
CK
– 5
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
0.25 t
CK
+ 7
w = wait states
×
t
CK
.
xMS
=
PMS
,
DMS
,
CMS
,
IOMS
,
BMS
.
CLKOUT
A0–A13
D
t
WP
t
AW
t
CWR
t
DH
t
WDE
t
DW
t
ASW
t
WWR
t
WRA
t
DDR
DMS
,
PMS
,
BMS
,
CMS
,
IOMS
RD
WR
Figure 12. Memory Write
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