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參數(shù)資料
| 型號： | ADSP-2181KS-115 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | DSP Microcomputer |
| 中文描述： | 24-BIT, 14.4 MHz, OTHER DSP, PQFP128 |
| 封裝： | PLASTIC, QFP-128 |
| 文件頁數(shù)： | 13/32頁 |
| 文件大?。?/td> | 290K |
| 代理商： | ADSP-2181KS-115 |
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ADSP-2181
–13–
REV. D
E SD SE NSIT IVIT Y
T he ADSP-2181 is an ESD (electrostatic discharge) sensitive device. Electrostatic charges readily
accumulate on the human body and equipment and can discharge without detection. Permanent
damage may occur to devices subjected to high energy electrostatic discharges.
T he ADSP-2181 features proprietary ESD protection circuitry to dissipate high energy discharges
(Human Body Model). Per method 3015 of MIL-ST D-883, the ADSP-2181 has been classified as
a Class 1 device.
Proper ESD precautions are recommended to avoid performance degradation or loss of function-
ality. Unused devices must be stored in conductive foam or shunts, and the foam should be
discharged to the destination before devices are removed.
TIMNGPARAMETERS
GE NE RAL NOT E S
Use the exact timing information given. Do not attempt to
derive parameters from the addition or subtraction of others.
While addition or subtraction would yield meaningful results for
an individual device, the values given in this data sheet reflect
statistical variations and worst cases. Consequently, you cannot
meaningfully add up parameters to derive longer times.
T IMING NOT E S
Switching Characteristics
specify how the processor changes its
signals. You have no control over this timing—circuitry external
to the processor must be designed for compatibility with these
signal characteristics. Switching characteristics tell you what the
processor will do in a given circumstance. You can also use switch-
ing characteristics to ensure that any timing requirement of a
device connected to the processor (such as memory) is satisfied.
Timing Requirements
apply to signals that are controlled by cir-
cuitry external to the processor, such as the data input for a read
operation. T iming requirements guarantee that the processor
operates correctly with other devices.
ME MORY T IMING SPE CIFICAT IONS
T he table below shows common memory device specifications
and the corresponding ADSP-2181 timing parameters, for your
convenience.
Memory
Device
Specification
ADSP-2181 T iming
T iming
Parameter
Parameter
Definition
Address Setup to
Write Start
Address Setup to
Write End
Address Hold T ime
t
ASW
A0–A13,
xMS
Setup before
WR
Low
A0–A13,
xMS
Setup before
WR
Deasserted
A0–A13,
xMS
Hold after
WR
Deasserted
Data Setup before
WR
High
Data Hold after
WR
High
RD
Low to Data Valid
A0–A13,
xMS
to Data Valid
t
AW
t
WRA
Data Setup T ime
t
DW
Data Hold T ime
OE
to Data Valid
Address Access T ime t
AA
t
DH
t
RDD
xMS
=
PMS
,
DMS
,
BMS
,
CMS
,
IOMS
.
FRE QUE NCY DE PE NDE NCY FOR T IMING
SPE CIFICAT IONS
t
CK
is defined as 0.5t
CK I
. T he ADSP-2181 uses an input clock
with a frequency equal to half the instruction rate: a 16.67 MHz
input clock (which is equivalent to 60 ns) yields a 30 ns proces-
sor cycle (equivalent to 33 MHz). t
CK
values within the range of
0.5t
CK I
period should be substituted for all relevant timing pa-
rameters to obtain the specification value.
Example: t
CK H
= 0.5t
CK
– 7 ns = 0.5 (25 ns) – 7 ns = 8 ns
ABSOLUT E MAX IMUM RAT INGS
*
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
Input Voltage . . . . . . . . . . . . . . . . . . . . . –0.3 V to V
DD
+ 0.3 V
Output Voltage Swing . . . . . . . . . . . . . . –0.3 V to V
DD
+ 0.3 V
Operating T emperature Range (Ambient) . . . . –40
°
C to +85
°
C
Storage T emperature Range . . . . . . . . . . . . . –65
°
C to +150
°
C
Lead T emperature (5 sec) T QFP . . . . . . . . . . . . . . . . +280
°
C
Lead T emperature (5 sec) PQFP . . . . . . . . . . . . . . . . . +280
°
C
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. T hese are stress ratings only; functional operation of
the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
WARNNG
ESD SENSITIVE DEVICE
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADSP-2181KS-133 | DSP Microcomputer |
| ADSP-2181KS-160 | DSP Microcomputer |
| ADSP-2181KST-115 | DSP Microcomputer |
| ADSP-2181KST-133 | DSP Microcomputer |
| ADSP-2181KST-160 | DSP Microcomputer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADSP2181KS133 | 制造商:AD 功能描述:New 制造商:Analog Devices 功能描述: |
| ADSP-2181KS-133 | 制造商:Analog Devices 功能描述:DSP Fixed-Point 16-Bit 33.3MHz 33.3MIPS 128-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:DSP W/LARGE RAM, 33MIPS C GRDE, PQFP - Bulk 制造商:Analog Devices 功能描述:IC MICROCOMPUTER DSP |
| ADSP2181KS160 | 制造商:AD 功能描述:* |
| ADSP-2181KS-160 | 制造商:Analog Devices 功能描述:DSP Fixed-Point 16-Bit 40MHz 40MIPS 128-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:16BIT DSP,5V,40MHZ,32K WORDS RAM,128PQFP - Bulk 制造商:Analog Devices 功能描述:Digital Signal Processor IC Supply Volta |
| ADSP-2181KST-115 | 制造商:Analog Devices 功能描述:DSP Fixed-Point 16-Bit 28.8MHz 28.8MIPS 128-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:DSP W/LARGE RAM, 28.8MIPS C GRDE, TQFP - Bulk |
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