ADSP-21061 Analog Devices, ADSP-21061 Datasheet - Page 15

• Manufacturer Part Number: ADSP-21061
• Description: ADSP-2106x SHARC DSP Microcomputer Family
• Manufacturer: Analog Devices

POWER DISSIPATION ADSP-21061 (5 V)
These specifications apply to the internal power portion of V
tion of external supply current and total supply current. For a complete discussion of the code used to measure power dissipation, see
the technical note “SHARC Power Dissipation Measurements.”
Specifications are based on the following operating scenarios:
Operation
Instruction Type
Instruction Fetch
Core Memory Access
Internal Memory DMA
To estimate power consumption for a specific application, use the following equation where % is the amount of time your program
spends in that state:
Parameter
I
I
I
I
I
NOTES
1
2
3
4
5
%PEAK × I
The test program used to measure I
power measurements made using typical applications are less than specified.
I
I
Idle denotes ADSP-21061 state during execution of IDLE instruction.
Idle16 denotes ADSP-21061 state during execution of IDLE16 instruction.
DDINHIGH
DDINLOW
DDIDLE
DDIDLE16
DDINPEAK
DDINHIGH
DDINLOW
is a composite average based on a range of low activity code.
is a composite average based on a range of high activity code.
DDINPEAK
Supply Current (Internal)
Supply Current (Internal)
Supply Current (Internal)
Supply Current (Idle)
Supply Current (Idle16)
+ %HIGH × I
DDINPEAK
Peak Activity (I
Multifunction
Cache
2 per Cycle (DM and PM)
1 per Cycle
DDINHIGH
represents worst case processor operation and is not sustainable under normal application conditions. Actual internal
4
5
1
2
3
+ %LOW × I
DDINPEAK
)
Test Conditions
t
t
t
t
t
t
t
t
t
V
V
DDINLOW
CK
CK
CK
CK
CK
CK
CK
CK
CK
DD
DD
DD
= 25 ns, V
= 20 ns, V
= 30 ns, V
= 25 ns, V
= 20 ns, V
= 30 ns, V
= 25 ns, V
= 20 ns, V
= 30 ns, V
= max
= max
only. See the Power Dissipation section of this data sheet for calcula-
High Activity (I
Multifunction
Internal Memory
1 per Cycle (DM)
1 per 2 Cycles
+ %IDLE × I
DD
DD
DD
DD
DD
DD
DD
DD
DD
= max
= max
= max
= max
= max
= max
= max
= max
= max
DDIDLE
DDINHIGH
ADSP-21061/ADSP-21061L
+ %IDLE16 × I
)
Max
595
680
850
460
540
670
270
320
390
200
55
Low Activity (I
Single Function
Internal Memory
None
1 per 2 Cycles
DDIDLE16
= power consumption
DDINLOW
Unit
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
)