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Rainbow Electronics ATmega64C1 User Manual

Page 363

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363

7647A–AVR–02/08

ATmega32/64/M1/C1

19.3

Control Register .............................................................................................257

20

Analog Comparator ............................................................................. 258

20.1

Features ........................................................................................................258

20.2

Overview ........................................................................................................258

20.3

Use of ADC Amplifiers ...................................................................................259

20.4

Analog Comparator Register Description ......................................................260

21

Digital to Analog Converter - DAC ..................................................... 266

21.1

Features ........................................................................................................266

21.2

Operation .......................................................................................................267

21.3

Starting a Conversion ....................................................................................267

21.4

DAC Register Description ..............................................................................268

22

debugWIRE On-chip Debug System .................................................. 271

22.1

Features ........................................................................................................271

22.2

Overview ........................................................................................................271

22.3

Physical Interface ..........................................................................................271

22.4

Software Break Points ...................................................................................272

22.5

Limitations of debugWIRE .............................................................................272

22.6

debugWIRE Related Register in I/O Memory ................................................272

23

Boot Loader Support – Read-While-Write Self-Programming
ATmega32/64M1 272

23.1

Boot Loader Features ....................................................................................273

23.2

Application and Boot Loader Flash Sections .................................................273

23.3

Read-While-Write and No Read-While-Write Flash Sections ........................273

23.4

Boot Loader Lock Bits ...................................................................................276

23.5

Entering the Boot Loader Program ................................................................277

23.6

Addressing the Flash During Self-Programming ...........................................279

23.7

Self-Programming the Flash ..........................................................................280

24

Memory Programming ......................................................................... 289

24.1

Program And Data Memory Lock Bits ...........................................................289

24.2

Fuse Bits ........................................................................................................290

24.3

PSC Output Behavior During Reset ..............................................................291

24.4

Signature Bytes .............................................................................................293

24.5

Calibration Byte .............................................................................................293

24.6

Parallel Programming Parameters, Pin Mapping, and Commands ...............293

24.7

Serial Programming Pin Mapping ..................................................................296