Datasheet

Intel
®
Pentium
®
4 Processor on 0.13 Micron Process Datasheet 17
Electrical Specifications
Power source characteristics must be stable when the supply to the voltage regulator is stable.
Refer to the appropriate platform design guide for timing details of the power up sequence. Refer to
the appropriate platform design guide for implementation details.
The Voltage Identification circuit requires an independent 1.2 V supply. This voltage must be
routed to the processor V
CC
VID pin. Figure 2-1 and Table 2-1 show the voltage and current
requirements of the V
CC
VID pin.
NOTE:
1. This specification applies to both static and transient components. The rising edge of V
CC
VID must be
monotonic from 0 to 1.1 V. See Figure 2-1 for current requirements. In this case, monotonic is defined as
continuously increasing with less than 50 mV of peak to peak noise for any width greater than 2 ns
superimposed on the rising edge.
Table 2-1. V
CC
VID Pin Voltage Requirements
Symbol Parameter Min Typ Max Unit Notes
V
CC
VID V
CC
for Voltage Identification circuit –5% 1.2 +10% V 1
Figure 2-1. V
CC
VID Pin Voltage and Current Requirements
V
CC
VID
1.2 V + 10%
1.2 V - 5%
4 ns
VIDs latched
30 mA
1.0 V
1 mA