Power and Clocking

8

8.1Operating Conditions

Table 8-1shows voltage, frequency, and temperature specifications for the applications processor for four different ranges. The temperature specification for each range is constant; the frequency range is operation voltage dependent. On a prototype design, the VCC/PLL_VCC regulator should have a range from 0.85 V to 1.65 V. PLL_VCC and VCC must be connected together on the board or driven by the same supply.

Table 8-1. Voltage, Temperature, and Frequency Electrical Specifications

Symbol

Description

Min

Typical

Max

 

 

 

 

 

tA

Ambient Temperature

-40°C

85° C

VVSS

VSS, VSSN, VSSQ Voltage

-0.3 V

0 V

0.3 V

VVCCQ

VCCQ

3.0 V

3.3 V

3.6 V

VVCCN_H

VCCN @ 3.3V

3.0 V

3.3 V

3.6 V

VVCCN_L

VCCN @ 2.5V

2.375 V

2.5 V

2.625 V

Low Voltage Range (PXA210 and PXA250)

 

 

 

 

 

 

 

 

VVCC_L

VCC, PLL_VCC Voltage, Low Range

0.8075 V

0.85 V

0.935 V

fTURBO_L

Turbo Mode Frequency, Low Range

99.5 MHz

132.7 MHz

fSDRAM_L

External Synchronous Memory Frequency, Low Range

66.4 MHz

Medium Voltage Range (PXA250 and PXA210)

 

 

 

 

 

 

 

 

VVCC_M

VCC, PLL_VCC Voltage, Mid Range

0.9 V

1.0 V

1.1 V

fTURBO_M

Turbo Mode Frequency, Mid Range

99.5 MHz

199.1 MHz

fSDRAM_M

External Synchronous Memory Frequency, Mid Range

99.5 MHz

High Voltage Range (PXA250 applications processor only)

 

 

 

 

 

 

 

 

VVCC_H

VCC, PLL_VCC Voltage, High Range

1.0 V

1.1 V

1.21 V

fTURBO_H

Turbo Mode Frequency, High Range

99.5 MHz

298.7 MHz

fSDRAM_H

External Synchronous Memory Frequency, High Range

99.5 MHz

Peak Voltage Range (PXA250 applications processor only)

 

 

 

 

 

 

 

 

VVCC_P

VCC, PLL_VCC Voltage, Peak Range

1.17 V

1.3 V

1.43 V

fTURBO_P

Turbo Mode Frequency, Peak Range

99.5 MHz

398.2 MHz

fSDRAM_P

External Synchronous Memory Frequency, Peak Range

99.5 MHz

NOTE: When VCCN=2.5 V, the I/O signals that are supplied by VCCN are 2.5 V tolerant only. Do not apply 3.3 V to any pin supplied by VCCN in this case.

PXA250 and PXA210 Applications Processors Design Guide

8-1

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Intel PXA250 and PXA210 manual Power and Clocking, Operating Conditions, Symbol Description Min Typical Max

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.