Rainbow-electronics ATtiny2313 Instrukcja Użytkownika Strona 209

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ATtiny2313
2543A–AVR–08/03
USART Register Description ............................................................................ 131
Examples of Baud Rate Setting........................................................................ 136
Universal Serial Interface – USI....................................................... 140
Overview........................................................................................................... 140
Functional Descriptions .................................................................................... 141
Alternative USI Usage ...................................................................................... 146
USI Register Descriptions................................................................................. 146
Analog Comparator .......................................................................... 151
debugWIRE On-chip Debug System............................................... 153
Features............................................................................................................ 153
Overview........................................................................................................... 153
Physical Interface ............................................................................................. 153
Software Break Points ...................................................................................... 154
Limitations of debugWIRE ................................................................................ 154
debugWIRE Related Register in I/O Memory ................................................... 154
Self-Programming the Flash............................................................ 155
Addressing the Flash During Self-Programming .............................................. 156
Memory Programming...................................................................... 160
Program And Data Memory Lock Bits .............................................................. 160
Fuse Bits........................................................................................................... 161
Signature Bytes ................................................................................................ 162
Calibration Byte ................................................................................................ 162
Parallel Programming Parameters, Pin Mapping, and Commands .................. 163
Serial Programming Pin Mapping..................................................................... 165
Parallel Programming ....................................................................................... 165
Serial Downloading........................................................................................... 173
Electrical Characteristics................................................................. 178
Absolute Maximum Ratings*............................................................................. 178
External Clock Drive Waveforms ...................................................................... 180
External Clock Drive ......................................................................................... 180
ATtiny2313 Typical Characteristics – Preliminary Data................ 181
Register Summary............................................................................ 198
Instruction Set Summary ................................................................. 200
Ordering Information........................................................................ 202
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