Datasheet
23
Electrical Specifications
4. The voltage specification requirements are measured across VCC_SENSE and VSS_SENSE lands at the
socket with a 100MHz bandwidth oscilloscope, 1.5 pF maximum probe capacitance, and 1 M
Ω minimum
impedance. The maximum length of ground wire on the probe should be less than 5 mm. Ensure external
noise from the system is not coupled into the oscilloscope probe.
5. Refer to Table 2-4 and Figure 2-1 for the minimum, typical, and maximum VCC allowed for a given current. The processor should not be subjected to any VCC and ICC combination wherein VCC exceeds VCC_MAX for a
given current.
6. The current specified is also for AutoHALT State.
7. The maximum instantaneous current the processor will draw while the thermal control circuit is active (as
indicated by the assertion of PROCHOT#) is the same as the maximum ICC for the processor.
8. ICC Stop-Grant is specified at VCC_MAX.
9. ICC_MAX is specified at VCC_MAX.
10.VTT must be provided via a separate voltage source and not be connected to VCC. This specification is
measured at the land.
11. Baseboard bandwidth is limited to 20 MHz.
12.This is maximum total current drawn from VTT plane by only the processor. This specification does not
include the current coming from RTT (through the signal line). Refer to the Voltage Regulator-Down (VRD)
10.1 Design Guide For Desktop and Transportable LGA775 Socket to determine the total ITT drawn by the
system.
13.Adherence to the voltage specifications for the processor are required to ensure reliable processor operation.
14.This is a steady-state ITT current specification, which is applicable when both VTT and VCC are high.
15.This is a power-up peak current specification that is applicable when VTT is high and VCC is low.
16.ISGNT and IENHANCED_AUTO_HALT are specified at VCC_TYP and TC = 50 °C.
17.These parameters are based on design characterization and are not tested.