PXA270 datasheet(53/126 Pages) INTEL

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Electrical, Mechanical, and Thermal Specification

5-3

Intel® PXA270 Processor

Electrical Specifications

Table 5-3 shows the supported memory frequency and memory supply voltage operating ranges for

the PXA270 processor.

VVCC3b

Voltage applied on VCC_LCD @2.5V

(+10 / -10%)

2.25

2.50

2.75

VVCC3c

Voltage applied on VCC_LCD @3.0V

(+10 / -10%)

2.70

3.0

3.30

VVCC3d

Voltage applied on VCC_LCD @3.3V

(+10 / -10%)

2.97

3.3

3.63

Tsysramp

Ramp Rate

—

mV/uS

VCC_IO Voltages

VVCC4a

Voltage applied on VCC_IO @3.0V

(+10 / -10.3%)

2.69175

3.0

3.30

VVCC4b

Voltage applied on VCC_IO @3.3V

(+10 / -10%)

2.97

3.3

3.63

Tsysramp

Ramp Rate

—

mV/uS

NOTE: VCC_IO must be maintained at a voltage as high as or higher than, all other supplies except for

VCC_BATT and VCC_USB

VCC_USIM Voltages

VVCC5a

Voltage applied on VCC_USIM @1.8V

(+20 / -5%)

1.71

1.80

2.16

VVCC5b

Voltage applied on VCC_USIM @3.0V

(+10 / -10%)

2.70

3.0

3.30

Tsysramp

Ramp Rate

—

mV/uS

NOTE: If the system does NOT use the USIM module, VCC_USIM can be tied to VCC_IO (at any supported

VCC_IO voltage level). This allows the GPIO’s on VCC_USIM to be used at the same voltage level as

VCC_IO GPIO’s.

NOTE: Software must NOT configure USIM signals to be used if this is done.

VCC_SRAM Voltage

VVCC6

Voltage applied on VCC_SRAM @1.1V

(+10 / -10%)

0.99

1.10

1.21

Tpwrramp

Ramp Rate

—

mV/uS

VCC_USB Voltage

VVCC7a

Voltage applied on VCC_USB @3.0V

(+10 / -10%)

2.70

3.00

3.30

VVCC7b

Voltage applied on VCC_USB @3.3V

(+10 / -10%)

2.97

3.30

3.63

Tsysramp

Ramp Rate

—

mV/uS

† System design must ensure that the device case temperature is maintained within the specified limits. In

some system applications it may be necessary to use external thermal management (for example, a

package-mounted heat spreader) or configure the device to limit power consumption and maintain

acceptable case temperatures.

Table 5-2. Voltage, Temperature, and Frequency Electrical Specifications (Sheet 2 of 2)

Symbol

Description

Min

Typical

Max

Units

PXA270 Datasheet(PDF) 53 Page - Intel Corporation

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