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MSP430x2xx系列用户使用手册.
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2006 Mixed Signal Products
User’s Guide
SLAU144B
IMPORTANT NOTICE
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TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI
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Copyright 2005, Texas Instruments Incorporated
Related Documentation From Texas Instruments
iii
Preface
Read This First
About This Manual
This manual discusses modules and peripherals of the MSP430x2xx 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 gen-
erates, 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 en-
vironments 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.
Glossary
iv
Glossary
ACLK Auxiliary Clock See Basic Clock Module
ADC Analog-to-Digital Converter
BOR Brown-Out Reset See System Resets, Interrupts, and Operating Modes
BSL Bootstrap Loader See www.ti.com/msp430 for application reports
CPU Central Processing Unit See RISC 16-Bit CPU
DAC Digital-to-Analog Converter
DCO Digitally Controlled Oscillator See Basic Clock Module
dst Destination See RISC 16-Bit CPU
FLL Frequency Locked Loop See FLL+ in MSP430x4xx Family User’s Guide
GIE General Interrupt Enable See System Resets Interrupts and Operating Modes
INT(N/2) Integer portion of N/2
I/O Input/Output See Digital I/O
ISR Interrupt Service Routine
LSB Least-Significant Bit
LSD Least-Significant Digit
LPM Low-Power Mode See System Resets Interrupts and Operating Modes
MAB Memory Address Bus
MCLK Master Clock See Basic Clock Module
MDB Memory Data Bus
MSB Most-Significant Bit
MSD Most-Significant Digit
NMI (Non)-Maskable Interrupt See System Resets Interrupts and Operating Modes
PC Program Counter See RISC 16-Bit CPU
POR Power-On Reset See System Resets Interrupts and Operating Modes
PUC Power-Up Clear See System Resets Interrupts and Operating Modes
RAM Random Access Memory
SCG System Clock Generator See System Resets Interrupts and Operating Modes
SFR Special Function Register
SMCLK Sub-System Master Clock See Basic Clock Module
SP Stack Pointer See RISC 16-Bit CPU
SR Status Register See RISC 16-Bit CPU
src Source See RISC 16-Bit CPU
TOS Top-of-Stack See RISC 16-Bit CPU
WDT Watchdog Timer See Watchdog Timer
Register Bit Conventions
v
Register Bit Conventions
Each register is shown with a key indicating the accessibility of the each
individual bit, and the initial condition:
Register Bit Accessibility and Initial Condition
Key Bit Accessibility
rw Read/write
r Read only
r0 Read as 0
r1 Read as 1
w Write only
w0 Write as 0
w1 Write as 1
(w) No register bit implemented; writing a 1 results in a pulse.
The register bit is always read as 0.
h0 Cleared by hardware
h1 Set by hardware
−0,−1 Condition after PUC
−(0),−(1)
Condition after POR
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