
E
1.0.
PENTIUM
PROCESSOR WITH VOLTAGE REDUCTION TECHNOLOGY
3
INTRODUCTION
Intel is manufacturing a reduced power version of the
latest Pentium
processor, the Pentium processor
with voltage reduction technology, targeting the
mobile market. Voltage reduction technology allows
the processor to “talk” to industry standard 3.3-volt
components while its inner core, operating at
2.9 volts, consumes less power to promote a longer
battery life. The Pentium processor with voltage
reduction technology is offered in the Tape Carrier
Package (TCP) and the Staggered Pin Grid Array
(SPGA) package. It has all the advanced features of
the 3.3V Pentium except for the differences listed in
sections 3.1 and 7.1.1.
The Pentium processor with voltage reduction
technology has several features which allow high-
performance notebooks to be designed with the
Pentium processor, including the following:
TCP dimensions are ideal for small form-factor
designs.
TCP
has
superior
characteristics.
2.9V core and 3.3V I/O buffer V
CC
inputs reduce
power
consumption
maintaining 3.3V compatibility externally.
The SL Enhanced feature set, which was initially
implemented in the Intel486
TM
CPU.
thermal
resistance
significantly,
while
The architecture and internal features of the Pentium
processor with voltage reduction technology are
identical to the desktop version of the Pentium
processor specifications provided in the Pentium
Processor Family Developer’s Manual, Volume 1:
Pentium
used in mobile applications have been eliminated to
streamline it for mobile applications.
Processors, except several features not
This document should be used in conjunction with
the following related Pentium processor documents.
Pentium
Processor Family Developer’s Manual,
Volume 1: Pentium
241428)
Pentium
Processor Family Developer's Manual,
Volume 3: Architecture and Programming
Manual(Order Number: 241430)
Processors (Order Number:
2.0.
MICROPROCESSOR
ARCHITECTURE OVERVIEW
The Pentium processor with voltage reduction
technology extends the Intel Pentium family of
microprocessors. It is compatible with a host of other
Intel products.
The Pentium processor family consists of the
Pentium processor with voltage reduction technology
described in this document, the original mobile
Pentium processor and the various desktop Pentium
processors. "Pentium processor" will be used in this
document to refer to the entire Pentium processor
family in general.
The mobile Pentium processor family architecture
contains all of the features of the Intel486 CPU
family, and provides significant enhancements and
additions including the following:
Superscalar Architecture
Dynamic Branch Prediction
Pipelined Floating-Point Unit
Improved Instruction Execution Time
Separate 8K Code and 8K Data Caches
Writeback MESI Protocol in the Data Cache
64-Bit Data Bus
Bus Cycle Pipelining
Address Parity
Internal Parity Checking
Execution Tracing
Performance Monitoring
IEEE 1149.1 Boundary Scan
System Management Mode
Virtual Mode Extensions
Voltage Reduction Technology
SL Power Management Features