MSP430x1xx Family User's Guide pdf datasheet download

MSP430x1xx Family User's Guide

About This Manual
This manual discusses modules and peripherals of the MSP430x1xx family of
devices. Each discussion presents the module or peripheral in a general
sense. Not all features and functions of all modules or peripherals are present
on all devices. In addition, modules or peripherals may differ in their exact
implementation between device families, or may not be fully implemented on
an individual device or device family.
Pin functions, internal signal connections and operational paramenters differ
from device-to-device. The user should consult the device-specific datasheet
for these details.
Related Documentation From Texas Instruments
For related documentation see the web site http://www.ti.com/msp430.
FCC Warning
This equipment is intended for use in a laboratory test environment only. It generates,
uses, and can radiate radio frequency energy and has not been tested
for compliance with the limits of computing devices pursuant to subpart J of
part 15 of FCC rules, which are designed to provide reasonable protection
against radio frequency interference. Operation of this equipment in other environments
may cause interference with radio communications, in which case
the user at his own expense will be required to take whatever measures may
be required to correct this interference.
Notational Conventions
Program examples, are shown in a special typeface.

1.1 Architecture

The MSP430 incorporates a 16-bit RISC CPU, peripherals, and a flexible clock
system that interconnect using a von-Neumann common memory address
bus (MAB) and memory data bus (MDB). Partnering a modern CPU with
modular memory-mapped analog and digital peripherals, the MSP430 offers
solutions for demanding mixed-signal applications.
Key features of the MSP430x1xx family include:
Ultralow-power architecture extends battery life
0.1-μA RAM retention
0.8-μA real-time clock mode
250-μA / MIPS active
High-performance analog ideal for precision measurement
12-bit or 10-bit ADC — 200 ksps, temperature sensor, VRef
12-bit dual-DAC
Comparator-gated timers for measuring resistive elements
Supply voltage supervisor
16-bit RISC CPU enables new applications at a fraction of the code size.
Large register file eliminates working file bottleneck
Compact core design reduces power consumption and cost
Optimized for modern high-level programming
Only 27 core instructions and seven addressing modes
Extensive vectored-interrupt capability
In-system programmable Flash permits flexible code changes, field
upgrades and data logging

1.2 Flexible Clock System

The clock system is designed specifically for battery-powered applications. A
low-frequency auxiliary clock (ACLK) is driven directly from a common 32-kHz
watch crystal. The ACLK can be used for a background real-time clock self
wake-up function. An integrated high-speed digitally controlled oscillator
(DCO) can source the master clock (MCLK) used by the CPU and high-speed
peripherals. By design, the DCO is active and stable in less than 6 μs.
MSP430-based solutions effectively use the high-performance 16-bit RISC
CPU in very short bursts.
Low-frequency auxiliary clock = Ultralow-power stand-by mode
High-speed master clock = High performance signal processing


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