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iii
CONTENT
S
CHAPTER 1
GUIDE
TO THIS MANUAL
1.
1 MANUAL CONTENTS ................................................................................................... 1-1
1.2 NOTATIONAL CONVENTIONS AND TERMINOLOGY ................................................ 1-3
1.
3 RELATED DOCUMENTS .............................................................................................. 1-5
1.
4 ELECTRONIC SUPPORT SYSTEMS ........................................................................... 1-8
1.4.
4 World Wide Web .....................................................................................................1-11
1.
5 TECHNICAL SUPPORT .............................................................................................. 1-11
1.
6 PRODUCT LITERATURE............................................................................................ 1-11
CHAPTER 2
ARCHITECTURAL
OVERVIEW
2.
1 TYPICAL APPLICATIONS............................................................................................. 2-1
2.
2 MICROCONTROLLER FEATURES .............................................................................. 2-1
2.
3 FUNCTIONAL OVERVIEW............................................................................................ 2-2
2.3.
1 CPU Control ..............................................................................................................2-4
2.3.
2 Register File ..............................................................................................................2-4
2.3.
3 Register Arithmetic-logic Unit (RALU) .......................................................................2-4
2.3.3.
1 Code Execution ....................................................................................................2-5
2.3.3.
2 Instruction Format ................................................................................................2-5
2.3.
4 Memory Interface Unit ...............................................................................................2-6
2.3.
5 Interrupt Service ........................................................................................................2-6
2.
4 INTERNAL TIMING........................................................................................................ 2-7
2.
5 INTERNAL PERIPHERALS........................................................................................... 2-8
2.5.
1 I/O Ports ....................................................................................................................2-9
2.5.
2 Serial I/O (SIO) Port ..................................................................................................2-9
2.5.
3 Event Processor Array (EPA) and Timer/Counters .................................................2-10
2.5.
4 Pulse-width Modulator (PWM) ................................................................................2-10
2.5.
5 Frequency Generator ..............................................................................................2-10
2.5.
6 Waveform Generator ..............................................................................................2-10
2.5.
7 Analog-to-digital Converter .....................................................................................2-11
2.5.
8 Watchdog Timer ......................................................................................................2-11
2.
6 SPECIAL OPERATING MODES ................................................................................. 2-11
2.6.
1 Reducing Power Consumption ...............................................................................2-11
2.6.
2 Testing the Printed Circuit Board ............................................................................2-11
2.6.
3 Programming the Nonvolatile Memory ....................................................................2-12