Datasheet

30 Datasheet
Electrical Specifications
9. VCC
L2
/VCC
3.3
and I
CCL2
/I
CC3.3
supply the second level cache (“Discrete” cache type only). Unless otherwise
noted, this specification applies to all Pentium III processor cache sizes. Systems should be designed for
these specifications, even if a smaller cache size is used.
10.Max I
CC measurements are measured at VCC max voltage, maximum temperature, under maximum signal
loading conditions. The Max Icc currents specified do not occur simultaneously under the stress
measurement condition.
11.Voltage regulators may be designed with a minimum equivalent internal resistance to ensure that the output
voltage, at maximum current output, is no greater than the nominal (i.e., typical) voltage level of V
CC
CORE
(V
CC
CORE_TYP
). In this case, the maximum current level for the regulator, Icc
CORE_REG
, can be reduced from
the specified maximum current Icc
CORE _MAX
and is calculated by the equation:
Icc
CORE_REG
= Icc
CORE_MAX
× VCC
CORE_TYP
/ (VCC
CORE_TYP
+ VCC
CORE
Tolerance, Transient)
12.The current specified is the current required for a single Pentium III processor. A similar amount of current is
drawn through the termination resistors on the opposite end of the AGTL+ bus, unless single-ended
termination is used (see Section 2.1).
13.The current specified is also for AutoHALT state.
14.Maximum values are specified by design/characterization at nominal V
CC
CORE
and nominal VCC
L2
/VCC
3.3
.
15.Based on simulation and averaged over the duration of any change in current. Use to compute the maximum
inductance tolerable and reaction time of the voltage regulator. This parameter is not tested.
16.dI
CC
/dt specifications are measured and specified at the SC242 connector pins.
17.V
CC
5
and ICC
5
are not used by the Pentium III processors. The VCC
5
supply is used for the test equipment
and tools.
18.This specification applies to the Pentium III processor with CPUID=067xh.
19.This specification applies to the Pentium III processor with CPUID=068xh.
20.Max I
CC
measurements are measured at VCC nominal voltage, maximum temperature, under maximum
signal loading conditions. The Max Icc currents specified do not occur simultaneously under the stress
measurement condition.
21..This specification applies to the Pentium III processor with CPUID=0683h operating at 1.0 GHz.