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ATmega48P 데이터시트 PDF




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기능 8-bit Microcontroller
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ATmega48P 데이터시트, 핀배열, 회로
8-bit AVR Microcontrollers
ATmega48P/PV / 88P/PV / 168P/PV
DATASHEET COMPLETE
Introduction
The Atmel® picoPower® ATmega48P/PV /88P/PV /168P/PV is a low-power
CMOS 8-bit microcontroller based on the AVR® enhanced RISC
architecture. By executing powerful instructions in a single clock cycle, the
ATmega48P/PV /88P/PV /168P/PV achieves throughputs close to 1MIPS
per MHz. This empowers system designer to optimize the device for power
consumption versus processing speed.
Feature
High Performance, Low Power Atmel®AVR® 8-Bit Microcontroller Family
Advanced RISC Architecture
131 Powerful Instructions
Most Single Clock Cycle Execution
32 x 8 General Purpose Working Registers
Fully Static Operation
Up to 20 MIPS Throughput at 20MHz
On-chip 2-cycle Multiplier
High Endurance Non-volatile Memory Segments
4K/8K/16KBytes of In-System Self-Programmable Flash program
Memory
256/512/512Bytes EEPROM
512/1K/1KBytes Internal SRAM
Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
Data Retention: 20 years at 85°C/100 years at 25°C(1)
Optional Boot Code Section with Independent Lock Bits
• In-System Programming by On-chip Boot Program
• True Read-While-Write Operation
Programming Lock for Software Security
Atmel® QTouch® Library Support
Capacitive Touch Buttons, Sliders and Wheels
QTouch and QMatrix® Acquisition
Up to 64 sense channels
Atmel-8025O-ATmega48P/PV / 88P/PV / 168P/PV_Datasheet_Complete-06/2016




ATmega48P pdf, 반도체, 판매, 대치품
13. System Clock and Clock Options............................................................................ 50
13.1. Clock Systems and Their Distribution.........................................................................................50
13.2. Clock Sources............................................................................................................................ 51
13.3. Low Power Crystal Oscillator......................................................................................................53
13.4. Full Swing Crystal Oscillator.......................................................................................................54
13.5. Low Frequency Crystal Oscillator...............................................................................................55
13.6. Calibrated Internal RC Oscillator................................................................................................56
13.7. 128kHz Internal Oscillator.......................................................................................................... 57
13.8. External Clock............................................................................................................................ 58
13.9. Timer/Counter Oscillator.............................................................................................................59
13.10. Clock Output Buffer....................................................................................................................59
13.11. System Clock Prescaler............................................................................................................. 59
13.12. Register Description...................................................................................................................60
14. PM - Power Management and Sleep Modes...........................................................64
14.1. Overview.....................................................................................................................................64
14.2. Sleep Modes...............................................................................................................................64
14.3. BOD Disable...............................................................................................................................65
14.4. Idle Mode....................................................................................................................................65
14.5. ADC Noise Reduction Mode.......................................................................................................65
14.6. Power-Down Mode.....................................................................................................................66
14.7. Power-save Mode.......................................................................................................................66
14.8. Standby Mode............................................................................................................................ 67
14.9. Extended Standby Mode............................................................................................................ 67
14.10. Power Reduction Register......................................................................................................... 67
14.11. Minimizing Power Consumption................................................................................................. 67
14.12. Register Description...................................................................................................................68
15. SCRST - System Control and Reset....................................................................... 73
15.1. Resetting the AVR...................................................................................................................... 73
15.2. Reset Sources............................................................................................................................73
15.3. Power-on Reset..........................................................................................................................74
15.4. External Reset............................................................................................................................75
15.5. Brown-out Detection...................................................................................................................75
15.6. Watchdog System Reset............................................................................................................ 76
15.7. Internal Voltage Reference.........................................................................................................76
15.8. Watchdog Timer......................................................................................................................... 77
15.9. Register Description................................................................................................................... 79
16. Interrupts................................................................................................................. 83
16.1. Interrupt Vectors in ATmega48P/PV...........................................................................................83
16.2. Interrupt Vectors in ATmega88P/PV...........................................................................................84
16.3. Interrupt Vectors in ATmega168P/PV.........................................................................................87
16.4. Register Description................................................................................................................... 90
17. EXINT - External Interrupts..................................................................................... 93
17.1. Pin Change Interrupt Timing.......................................................................................................93
17.2. Register Description................................................................................................................... 94
Atmel ATmega48P/PV / 88P/PV / 168P/PV [DATASHEET]
Atmel-8025O-ATmega48P/PV / 88P/PV / 168P/PV_Datasheet_Complete-06/2016
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ATmega48P 전자부품, 판매, 대치품
27.3. Register Description................................................................................................................. 306
28. ADC - Analog to Digital Converter......................................................................... 311
28.1. Features....................................................................................................................................311
28.2. Overview...................................................................................................................................311
28.3. Starting a Conversion...............................................................................................................313
28.4. Prescaling and Conversion Timing...........................................................................................314
28.5. Changing Channel or Reference Selection.............................................................................. 316
28.6. ADC Noise Canceler................................................................................................................ 318
28.7. ADC Conversion Result............................................................................................................321
28.8. Temperature Measurement...................................................................................................... 322
28.9. Register Description................................................................................................................. 322
29. DBG - debugWIRE On-chip Debug System.......................................................... 333
29.1. Features................................................................................................................................... 333
29.2. Overview...................................................................................................................................333
29.3. Physical Interface..................................................................................................................... 333
29.4. Software Break Points..............................................................................................................334
29.5. Limitations of debugWIRE........................................................................................................334
29.6. Register Description................................................................................................................. 334
30. Self-Programming the Flash..................................................................................336
30.1. Overview...................................................................................................................................336
30.2. Addressing the Flash During Self-Programming...................................................................... 337
30.3. Register Description................................................................................................................. 342
31. BTLDR - Boot Loader Support – Read-While-Write Self-Programming................ 345
31.1. Features................................................................................................................................... 345
31.2. Overview...................................................................................................................................345
31.3. Application and Boot Loader Flash Sections............................................................................345
31.4. Read-While-Write and No Read-While-Write Flash Sections...................................................346
31.5. Boot Loader Lock Bits.............................................................................................................. 348
31.6. Entering the Boot Loader Program...........................................................................................349
31.7. Addressing the Flash During Self-Programming...................................................................... 350
31.8. Self-Programming the Flash.....................................................................................................351
31.9. Register Description................................................................................................................. 360
32. MEMPROG- Memory Programming......................................................................363
32.1. Program And Data Memory Lock Bits...................................................................................... 363
32.2. Fuse Bits...................................................................................................................................364
32.3. Signature Bytes........................................................................................................................ 367
32.4. Calibration Byte........................................................................................................................ 367
32.5. Page Size................................................................................................................................. 367
32.6. Parallel Programming Parameters, Pin Mapping, and Commands.......................................... 367
32.7. Parallel Programming...............................................................................................................369
32.8. Serial Downloading...................................................................................................................376
33. Electrical Characteristics....................................................................................... 382
33.1. Absolute Maximum Ratings......................................................................................................382
Atmel ATmega48P/PV / 88P/PV / 168P/PV [DATASHEET]
Atmel-8025O-ATmega48P/PV / 88P/PV / 168P/PV_Datasheet_Complete-06/2016
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