Power and Clocking

Table 8-3. Power Consumption Specifications (Sheet 2 of 2)

Symbol

Description

Min1

Typical1

Max1

 

 

 

 

 

PVCCN_HB

Power from VCCN Supply, High Range (PXA250 applications

115 mW

250 mW

@2.5V

processor)

 

 

 

 

 

 

 

 

PVCCN_HB

Power from VCCN Supply, High Range (PXA250 applications

160 mW

440 mW

@3.3V

processor)

 

 

 

 

 

 

 

 

PT_IDLE_H

Total Power, IDLE Mode, High Range

135mW

 

 

 

 

 

Peak Voltage Range (PXA250 applications processor only)

 

 

 

 

 

 

 

 

PT_P

Total Power, Peak Range

635 mW

950 mW

PVCC_P

Power from VCC Supply, Peak Range

470 mW

360 mW

PVCCN_P

Power from VCCN Supply, Peak Range

115 mW

255 mW

@2.5V

 

 

 

 

 

 

 

 

 

PVCCN_P

Power from VCCN Supply, Peak Range

160 mW

440 mW

@3.3V

 

 

 

 

 

 

 

 

 

PT_IDLE_H

Total Power, IDLE Mode, High Range

185mW

 

 

 

 

 

NOTE: 1. These numbers are pre-silicon estimates, and will be replaced with the correct values when characterization is complete.

8.4Oscillator Electrical Specifications

The applications processor contains two oscillators – 32.768 kHz and 3.6864 MHz; each chosen for a specific crystal. When choosing a crystal, match the crystal parameters as closely as possible.

8.4.132.768 kHz Oscillator Specifications

The 32.768 kHz Oscillator is connected between the TXTAL (amplifier input) and TEXTAL (amplified output). The 32.768 kHz specifications are shown in Table 8-4.

Table 8-4. 32.768 kHz Oscillator Specifications (Sheet 1 of 2)

Symbol

Description

Min

Typical

Max

 

 

 

 

 

Crystal Specifications - Typical is FOX NC38

 

 

 

 

 

 

 

 

FXT

Crystal Frequency, TXTAL/TEXTAL

32.768 kHz

LMT

Motional Inductance, TXTAL/TEXTAL

6827.81 H

CMT

Motional Capacitance, TXTAL/TEXTAL

3.455 fF

RMT

Motional Resistance, TXTAL/TEXTAL

6 k

16 k

35 k

COT

Shunt Capacitance TXTAL to TEXTAL

1.6 pF

CLT

Load Capacitance TXTAL/TEXTAL

12.5 pF

Amplifier Specifications

 

 

 

 

 

 

 

 

VIH_X

Input High Voltage, TXTAL

0.8 V*VCC

VCC

VIL_X

Input Low Voltage, TXTAL

VSS

0.2 V*VCC

IIN_XT

Input Leakage, TXTAL

1 A

CIN_XT

Input Capacitance, TXTAL/TEXTAL

18 pF

25 pF

8-4

PXA250 and PXA210 Applications Processors Design Guide

Page 72
Image 72
Intel PXA250 and PXA210 manual Oscillator Electrical Specifications, 1 32.768 kHz Oscillator Specifications, Ptidleh

PXA250 and PXA210 specifications

The Intel PXA250 and PXA210 processors, part of the Intel XScale architecture, were introduced in the early 2000s, targeting mobile and embedded applications. They are known for their low power consumption, high performance, and advanced multimedia capabilities, making them suitable for a wide range of devices, including PDAs, smartphones, and other portable computing devices.

The PXA250, which operates at clock speeds ranging from 400 MHz to 624 MHz, features a superscalar architecture that allows it to issue multiple instructions per clock cycle. This enhances the overall performance for demanding applications while maintaining low power usage. It supports a variety of peripheral interfaces, including USB, Ethernet, and various memory types, which contributes to its versatility in different product designs.

One of the key technologies in the PXA250 is the integrated Intel Smart Repeat Technology, which optimizes data processing, thereby reducing the amount of power consumed during operation. This feature is particularly important for battery-powered devices, as it extends the overall battery life, allowing for longer usage times in mobile environments. Additionally, the PXA250 includes a dedicated graphics acceleration unit, which enables enhanced graphics and multimedia performance suited to modern applications at the time.

In contrast, the PXA210 is a more entry-level processor, aimed at cost-sensitive applications. Operating at lower clock speeds, typically around 200 MHz to 400 MHz, it forgoes some of the advanced performance features of the PXA250 while still offering a good balance of performance and power efficiency. The PXA210 is less complex, making it suitable for simpler devices that do not require the extensive capabilities of the PXA250.

Both processors utilize the Intel XScale architecture, which is based on the ARM instruction set. They are built on a 0.13-micron process technology, enabling higher density and lower power consumption compared to their predecessors. With integrated memory controllers and bus interfaces, they facilitate efficient data handling and connectivity options.

In summary, both the Intel PXA250 and PXA210 processors played a crucial role in the evolution of mobile computing by providing powerful processing capabilities with energy efficiency. Their features and technologies enabled device manufacturers to create innovative products that catered to the growing demand for portable devices during that era.