Rainbow-electronics ATtiny43U Manual de usuario Pagina 179
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8048B–AVR–03/09
11.4 Register Description ........................................................................................78
12 8-bit Timer/Counter with PWM (Timer/Counter0 and Timer/Counter1) .
79
12.1 Features ..........................................................................................................79
12.2 Overview ..........................................................................................................79
12.3 Timer/Counter Clock Sources .........................................................................80
12.4 Counter Unit ....................................................................................................80
12.5 Output Compare Unit .......................................................................................81
12.6 Compare Match Output Unit ............................................................................83
12.7 Modes of Operation .........................................................................................84
12.8 Timer/Counter Timing Diagrams .....................................................................88
12.9 Register Description ........................................................................................90
13 Timer/Counter Prescaler ....................................................................... 98
13.1 Prescaler Reset ...............................................................................................98
13.2 External Clock Source .....................................................................................98
13.3 Register Description ........................................................................................99
14 USI – Universal Serial Interface .......................................................... 100
14.1 Features ........................................................................................................100
14.2 Overview ........................................................................................................100
14.3 Functional Descriptions .................................................................................101
14.4 Alternative USI Usage ...................................................................................107
14.5 Register Descriptions ....................................................................................107
15 Analog Comparator ............................................................................. 112
15.1 Analog Comparator Multiplexed Input ...........................................................112
15.2 Register Description ......................................................................................113
16 Analog to Digital Converter ................................................................ 115
16.1 Features ........................................................................................................115
16.2 Overview ........................................................................................................115
16.3 ADC Operation ..............................................................................................116
16.4 Starting a Conversion ....................................................................................116
16.5 Prescaling and Conversion Timing ................................................................117
16.6 Changing Channel or Reference Selection ...................................................120
16.7 ADC Noise Canceler .....................................................................................121
16.8 Analog Input Circuitry ....................................................................................122
16.9 Analog Noise Canceling Techniques .............................................................122
- Features 1
- 4. AVR CPU Core 7
- Initial Value00000000 9
- ATtiny43U 10
- 4.6 Stack Pointer 11
- 5. Memories 15
- 6.3 System Clock Prescaler 27
- 7.1 Sleep Modes 31
- 0 1 ADC Noise Reduction 35
- 1 0 Power-down 35
- 11Reserved 35
- SM1 SM0 Sleep Mode 35
- START MODE 41
- 8.6 Component Selection 43
- 8.11 Register Description 47
- 9.2 Reset Sources 49
- 9.3 Power-on Reset 49
- 9.6 Watchdog Reset 51
- 9.8 Watchdog Timer 51
- 10. Interrupts 57
- 10.3 Register Description 59
- DATA B U S 63
- INSTRUCTIONS 65
- SYNC LATCH 65
- SYSTEM CLK 65
- 11.3 Alternate Port Functions 67
- 12.1 Features 79
- 12.2 Overview 79
- 12.5 Output Compare Unit 81
- DATA BU S 83
- (Toggle) 85
- MAX - 1 MAX BOTTOM BOTTOM + 1 89
- 13.3 Register Description 99
- 14.3 Functional Descriptions 101
- 8048B–AVR–03/09 103
- A B D EC F 105
- 14.4 Alternative USI Usage 107
- 14.5 Register Descriptions 107
- Initial Value 0 0 0 0 0 0 0 0 109
- Bit 7 6 5 4 3 2 1 0 109
- 0x0E (0x2E) 109
- 0x10 (0x30) MSB LSB USIBR 111
- Read/Write R R R R R R R R 111
- 15.2 Register Description 113
- 16.1 Features 115
- 16.2 Overview 115
- 16.7 ADC Noise Canceler 121
- Output Code 123
- 16.11 ADC Conversion Result 125
- 16.12 Temperature Measurement 125
- 17.1 Features 131
- 17.2 Overview 131
- 17.3 Physical Interface 131
- Bit 76543210 135
- Rd ––––––LB2LB1 135
- 18.9 Register Description 137
- 19. Memory Programming 139
- 19.7 Serial Programming 151
- 20.2 DC Characteristics 155
- 20.4 Clock Characteristics 157
- Gain Calibration) 161
- = 5V ± 10% 163
- 21.1 Boost Converter 165
- 22. Register Summary 167
- 23. Instruction Set Summary 169
- 24. Ordering Information 171
- 25.2 20S2 173
- 27.1 Rev. 8048B-03/09 175
- 27.2 Rev. 8048A-02/09 175
- Table of Contents 177
- Headquarters International 182
- Product Contact 182
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