32581C

Electrical Specifications

9.1.4Operating Conditions

Table 9-3lists the various power supplies of the SC3200 and provides the device operating conditions.

Table 9-3. Operating Conditions

Symbol

 

 

 

 

 

 

(Note 1)

Parameter

Min

Typ

Max

Unit

Comments

 

 

 

 

 

 

 

TC

Operating case temperature

0

-

85

oC

 

AVCCUSB

Analog power supply. Powers internal ana-

3.14

3.3

3.46

V

 

 

log circuits and some external signals (see

 

 

 

 

 

 

Table 9-4).

 

 

 

 

 

 

 

 

 

 

 

 

VBAT

Battery supply voltage. Powers RTC and

2.4

3.0

3.46

V

 

 

ACPI when VBAT is greater than VSB (by at

 

 

 

 

 

 

least 0.5V), and some external signals (see

 

 

 

 

 

 

Table 9-4).

 

 

 

 

 

 

 

 

 

 

 

 

VIO

I/O buffer power supply. Powers most of

3.14

3.3

3.46

V

 

 

the external signals (see Table 9-4); certain

 

 

 

 

 

 

signals within this power plane are 5V

 

 

 

 

 

 

tolerant.

 

 

 

 

 

 

 

 

 

 

 

 

VCORE

Core processor and internal digital power

1.71

1.8

1.99

V

 

 

supply. Powers internal digital logic, includ-

 

 

 

 

 

 

ing internal frequency multipliers.

 

 

 

 

 

 

 

 

 

 

 

 

VPLL2

PLL. Internal Phase Locked Loops (PLL)

3.14

3.3

3.46

V

 

VPLL3

power supply.

 

 

 

 

 

VSB

Standby power supply. Powers RTC and

3.14

3.3

3.46

V

 

 

ACPI when VSB is greater than VBAT-0.5V,

 

 

 

 

 

 

and some external signals (see Table 9-4).

 

 

 

 

 

 

 

 

 

 

 

 

VSBL

Standby logic. Powers internal logic

1.71

1.8

1.99

V

 

 

needed to support Standby VSB.

 

 

 

 

 

 

VSBL requires a 0.1 µF bypass capacitor to

 

 

 

 

 

 

VSS.

 

 

 

 

 

Note 1. For VIH (Input High Voltage), VIL (Input Low Voltage), IOH (Output High Current), and IOL (Output Low Current) op- erating conditions refer to Section 9.2 "DC Characteristics" on page 357.

Notes:

1)All power sources except VBAT must be connected, even if the function is not used.

2)VSB, and VSBL must be on if any other voltage is applied. VSB and VBAT voltages can be applied sepa- rately. See Section 9.3.15 "Power-Up Sequencing" on page 416.

3)The power planes of the SC3200 can be turned on or off. For more information, see Section 6.2.9 "Power Management Logic" on page 156.

4)It is recommended that the voltage difference between

VCORE and VSBL be less than 0.25V, in order to reduce leakage current. If the voltage difference exceeds 0.25V, excessive leakage current is used in gates that are connected on the boundary between voltage domains.

5)It is recommended that the voltage difference between

VIO and VSB be less than 0.25V, in order to reduce leakage current. If the voltage difference exceeds 0.25V, excessive leakage current is used in gates that are connected on the boundary between voltage domains.

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AMD Geode™ SC3200 Processor Data Book

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AMD SC3200 manual Operating Conditions, Symbol Parameter Min Typ Max Unit Comments, Vss