Mobile Pentium III Processor in BGA2 and Micro-PGA2 Packages Datasheet
Intel Corporation
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Introduction
Using Intel’s advanced 0.18 micron process technology, the Intel
mobile Pentium III processor
is offered at speeds of 400 MHz, 450 MHz, and 500 MHz while still offering lower power for long
battery life. Other performance advancements include the addition of new Internet Streaming
SIMD instructions, an advanced transfer cache architecture, and a processor system bus speed of
100 MHz. These features are offered in BGA2 and micro-PGA2 packages that are up to 20%
smaller than those offered for the mobile Intel Pentium II processor. All of these technologies
make it possible to offer this outstanding performance in mobile PCs offered in a variety of shapes
and sizes.
Intel mobile Pentium III processor featuring Intel
SpeedStep technology is the next dramatic
step towards achieving near desktop performance. This exciting new processor has two
performance modes and allows real-time dynamic switching of the voltage and frequency between
the modes. This occurs by switching the bus ratios, core operating voltage, and core processor
speeds without resetting the system.
There are two performance modes offered, Maximum Performance and Battery Optimized
Performance. Maximum Performance mode provides near desktop performance and runs at 600
or 650 MHz. Battery Optimized Performance mode provides the best balance between
performance and battery life and operates at a lower frequency of 500MHz.
The integrated L2 cache is designed to help improve performance, and it complements the system
bus by providing critical data faster and reducing total system power consumption. The mobile
Pentium III processor’s 64-bit wide Gunning Transceiver Logic (GTL+) system bus provides a
glue-less, point-to-point interface for an I/O bridge/memory controller, and is compatible with the
440BX AGPset, 440ZX-M AGPset, and the 440MX Chipset. Figure 1 shows the various parts of a
mobile Pentium III processor/440BX or 440ZX-M AGPset -based system and how the mobile
Pentium III processor connects to them. Figure 2 shows an alternative mobile Pentium III
processor/440MX Chipset - based system.