22 of 30 May 4, 2004
IDT 79RC32332
Power Consumption
3.3V Device
Note: This table is based on a 2:1 pipeline-to-bus clock ratio.
2.5V Device
Note: This table is based on a 2:1 pipeline-to-bus clock ratio.
Power Ramp-up
3.3V Device
There is no special requirement for how fast V
cc
I/O ramps up to 3.3V. However, all timing references are based on a stable V
cc
I/O.
2.5V Device
The 2.5V core supply (and 2.5V V
cc
P supply) can be fully powered without the 3.3V I/O supply. However, the 3.3V I/O supply cannot exceed the
2.5V core supply by more than 1 volt during power up. A sustained large power difference could potentially damage the part. Inputs should not be
driven until the part is fully powered. Specifically, the input high voltages should not be applied until the 3.3V I/O supply is powered.
There is no special requirement for how fast V
cc
I/O ramps up to 3.3V. However, all timing references are based on a stable V
cc
I/O.
Parameter 100MHz 133MHz 150MHz
Unit Conditions
Typical Max. Typical Max. Typical Max.
I
CC
Normal mode 360 480 480 630 550 700 mA C
L
= (See Figure 5, Output Loading
for AC Testing)
T
a
= 25
o
C
V
cc
Core = 3.46V (for max. values)
V
cc
I/O = 3.46V (for max. values)
V
cc
Core = 3.3V (for typical values)
V
cc
I/O = 3.3V (for typical values)
Standby mode
1
1.
RISCore 32300 CPU core enters Standby mode by executing WAIT instructions. On-chip logic outside the CPU core continues to function.
250 370 330 480 390 540 mA
Power
Dissipation
Normal mode 1.2 1.7 1.5 2.2 1.7 2.4 W
Standby mode
1
0.83 1.3 1.1 1.7 1.3 1.9 W
Table 10 Power Consumption — 3.3V Device
Parameter 100MHz 133MHz 150MHz
Unit Conditions
Typical Max. Typical Max. Typical Max.
I
CC
I/O Normal mode 24 81 32 93 35 104 mA C
L
= (See Figure 5, Output Loading
for AC Testing)
T
a
= 25
o
C
V
cc
Core = 2.625V (for max. values)
V
cc
I/O = 3.46V (for max. values)
V
cc
Core = 2.5V (for typical values)
V
cc
I/O = 3.3V (for typical values)
Standby mode
1
1.
RISCore 32300 CPU core enters Standby mode by executing WAIT instructions. On-chip logic outside the CPU core continues to function.
2812932104mA
I
CC
core Normal mode 232 301 298 392 333 438 mA
Standby mode
1
120 269 151 319 168 345 mA
Power
Dissipation
Normal mode 0.66 1.07 0.85 1.35 0.95 1.51 W
Standby mode
1
0.31 0.94 0.38 1.10 0.43 1.21 W
Table 11 Power Consumption — 2.5V Device
