Attiny43u – Rainbow Electronics ATtiny43U User Manual

Page 180

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iv

8048B–AVR–03/09

ATtiny43U

16.10

ADC Accuracy Definitions .............................................................................123

16.11

ADC Conversion Result .................................................................................125

16.12

Temperature Measurement ...........................................................................125

16.13

Register Description ......................................................................................126

17

debugWIRE On-chip Debug System .................................................. 131

17.1

Features ........................................................................................................131

17.2

Overview ........................................................................................................131

17.3

Physical Interface ..........................................................................................131

17.4

Software Break Points ...................................................................................132

17.5

Limitations of debugWIRE .............................................................................132

17.6

Register Description ......................................................................................132

18

Self-Programming the Flash ............................................................... 133

18.1

Performing Page Erase by SPM ....................................................................133

18.2

Filling the Temporary Buffer (Page Loading) .................................................133

18.3

Performing a Page Write ...............................................................................134

18.4

Addressing the Flash During Self-Programming ...........................................134

18.5

EEPROM Write Prevents Writing to SPMCSR ..............................................135

18.6

Reading the Fuse and Lock Bits from Software ............................................135

18.7

Preventing Flash Corruption ..........................................................................137

18.8

Programming Time for Flash when Using SPM ............................................137

18.9

Register Description ......................................................................................137

19

Memory Programming ......................................................................... 139

19.1

Program And Data Memory Lock Bits ...........................................................139

19.2

Fuse Bytes .....................................................................................................140

19.3

Device Signature Imprint Table .....................................................................141

19.4

Page Size ......................................................................................................142

19.5

Parallel Programming Parameters, Pin Mapping, and Commands ...............142

19.6

Parallel Programming ....................................................................................144

19.7

Serial Programming .......................................................................................151

20

Electrical Characteristics .................................................................... 155

20.1

Absolute Maximum Ratings* .........................................................................155

20.2

DC Characteristics .........................................................................................155

20.3

Speed Grades ...............................................................................................156

20.4

Clock Characteristics .....................................................................................157

20.5

System and Reset Characteristics ................................................................158

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