ADSP-21060 Analog Devices, ADSP-21060 Datasheet - Page 14

• Manufacturer Part Number: ADSP-21060
• Description: ADSP-2106x SHARC DSP Microcomputer Family
• Manufacturer: Analog Devices

POWER DISSIPATION ADSP-21060 (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
NOTESS
1
2
3
ADSP-21060/ADSP-21060L
The test program used to measure I
power measurements made using typical applications are less than specified.
I
Idle denotes ADSP-21060L state during execution of IDLE instruction.
DDINPEAK
DDINHIGH
DDINLOW
DDIDLE
DDINHIGH
is a composite average based on a range of high activity code. I
%PEAK × I
Supply Current (Internal)
Supply Current (Internal)
Supply Current (Internal)
Supply Current (Idle)
DDINPEAK
DDINPEAK
Peak Activity (I
Multifunction
Cache
2 per Cycle (DM and PM)
1 per Cycle
+ %HIGH × I
represents worst case processor operation and is not sustainable under normal application conditions. Actual internal
3
1
2
2
DDINHIGH
DDINPEAK
+ %LOW × I
)
Test Conditions
t
t
t
t
t
t
V
CK
CK
CK
CK
CK
CK
DDINLOW
DD
DD
= 30 ns, V
= 25 ns, V
= 30 ns, V
= 25 ns, V
= 30 ns, V
= 25 ns, V
= max
only. See the Power Dissipation section of this data sheet for calcula-
is a composite average based on a range of low activity code.
Multifunction
Internal Memory
High Activity (I
1 per Cycle (DM)
1 per 2 Cycles
DDINLOW
DD
DD
DD
DD
DD
DD
= max
= max
= max
= max
= max
= max
+ %IDLE × I
DDINHIGH
)
DDIDLE
Max
745
850
575
670
340
390
200
= power consumption
Low Activity (I
Single Function
Internal Memory
None
1 per 2 Cycles
DDINLOW
Units
mA
mA
mA
mA
mA
mA
mA
)