Intel Atom Processor N270 AU80586GE025D Data Sheet
Product codes
AU80586GE025D
Electrical Specifications
20
Datasheet
3
Electrical Specifications
3.1
Power and Ground Pins
For clean, on-chip power distribution, the processor will have a large number of VCC
(power) and VSS (ground) inputs. All power pins must be connected to V
CC
power
planes while all VSS pins must be connected to system ground planes. Use of multiple
power and ground planes is recommended to reduce I*R drop. The processor VCC pins
must be supplied the voltage determined by the VID (Voltage ID) pins.
3.2
FSB Clock (BCLK [1:0]) and Processor Clocking
BCLK [1:0] directly controls the FSB interface speed as well as the core frequency of
the processor. As in previous generation processors, the processor core frequency is a
multiple of the BCLK [1:0] frequency. The processor uses a differential clocking
implementation.
3.3
Voltage Identification
The processor uses seven voltage identification pins (VID [6:0]) to support automatic
selection of power supply voltages. The VID pins for the processor are CMOS outputs
driven by the processor VID circuitry. Table 3 specifies the voltage level corresponding
to the state of VID [6:0]. A “1” in this refers to a high-voltage level and a “0” refers to
low-voltage level.
Table 3. Voltage Identification Definition
VID6 VID5 VID4 VID3 VID2 VID1 VID0 V
CC
(V)
0 0 1 1 0 0 0
1.2000
0 0 1 1 0 0 1
1.1875
0 0 1 1 0 1 0
1.1750
0 0 1 1 0 1 1
1.1625
0 0 1 1 1 0 0
1.1500
0 0 1 1 1 0 1
1.1375
0 0 1 1 1 1 0
1.1250
0 0 1 1 1 1 1
1.1125
0 1 0 0 0 0 0
1.1000
0 1 0 0 0 0 1
1.0875
0 1 0 0 0 1 0
1.0750