March 2001
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ST10R272L
USER’S MANUAL
1
INTRODUCTION
The ST10R272L is a new member of the ST10 family designed to give high performance in
applications where low-power operation is important.
The low-power features of the ST10R272L include:
•
3.3V operation: Half the power consumption of an equivalent 5V device (250mW at
25MHz).
•
Idle Mode: Consumes less than 100mW at 25MHz.
•
Power-Down Mode: Less than 170uW.
•
Static Design: Operates at a lower clock speed for lower power consumption.
The Performance Features of the ST10R272Linclude:
•
Operation up to 50MHz: Double the performance of existing ST10/C166 devices
•
On-chip DSP co-processor: Up to 25Mips DSP performance
The ST10R272L is fully software compatible with other members of the ST10 and C166
families. Most designs using R163 or R165 type devices can be adapted for the R272L with
minimal change, giving the immediate benefits of lower power consumption and higher
performance.
This manual describes the functionality of the ST10R272L. The architectural overview gives a
general description of the ST10R272L device. It describes in brief, the CPU performance, the
on-chip system resources, the clock generator, the peripheral blocks and the protected bits.
The detailed operation of the CPU, the MAC and the on-chip peripherals - parallel ports,
external bus interface, peripheral event controller, general purpose timers, serial interfaces,
watchdog timer, bootstrap loader, capcom units, pulse width module and the analog-digital
converter - are contained in the subsequent chapters. The operating modes - system reset,
power reduction, interrupt handling and system programming - are described in detail, in
separate chapters.The special function registers are listed by both name and hexadecimal
address. The instruction set is covered in the ‘ST10 Family Programming Manual’ and is not
described in this manual.
The DC and AC electrical characteristics and the pin description for each available package
are covered in the device Data Sheet and Errata Sheet, and are not described in this manual.
Before starting on a new design, verify the device characteristics with an up-to-date copy of
the device Data Sheet and Errata Sheet. An index of registers is contained at the back of the
manual.
