79RC64574 Datasheet, PDF (17/28 Pages) Integrated Device Technology – Advanced 64-bit Microprocessors Product Family

79RC64574™ 79RC64575™
Power Consumption—RC64575
Note: The following table assumes a 4:1 pipeline to bus clock ratio.
Parameter
RC64575 200MHz
Typical¹
Max
RC64575 250MHz
Typical¹
Max
Conditions
I_CC stand-by —
—
active,
64-bit
bus
option⁴
510 mA²
600 mA²
60 mA²
120 m²A
680 mA²
800 mA²
—
—
600 mA²
700 mA²
60 mA²
120 m²A
810 mA²
950 mA²
C_L = 0pF³
C_L = 50pF
C_L = 0pF
No SysAd activity³
Vcc = 2.63V
C_L = 50pF
R4x00 compatible writes,
T_C = 25^oC
Vcc = 2.63V
660 mA²
880 mA⁵
770 mA²
1050 mA⁵
C_L = 50pF
Pipelined writes or write re-issue,
T_C = 25^oC³
Vcc = 2.63V
1. _{Typical integer instruction mix and cache miss rates.}
2. _{These are not tested. They are the results of engineering analysis and are provided for reference only.}
3. _{Guaranteed by design.}
4. _{In 32-bit bus option, use RC64574 power consumption values.}
5. _{These are the specifications IDT tests to insure compliance.}
RC64575 Power Curves
The following two graphs contain power curves that show power consumption at various bus frequencies. Power consumption is based on the
values for R4x00 compatible write mode, shown in the table above.
Note: Only pipeline frequencies that are integer multiples (2x, 3x, etc.) of bus frequencies are supported.
1100
900
700
7x
500
300
100
20
3x
2x
5x
6x
4x
40
60
80
100 120
System Bus Speed (MHz)
Figure 4 Typical Power Usage - RC64575
2x Mode
3x Mode
4x Mode
5x Mode
6x Mode
7x Mode
17 of 28
December 14, 2001