atmega2560::clock Namespace Reference

Clock definitions. More...

Enumerations
enum class	Source : uint8_t {   ExternalClock = 0 , InternalCalibratedRC = 1 , Internal128kHzRC = 2 , LowFrequencyCrystal = 3 ,   CrystalOscillator = 4 }
	Main clock source types. More...
enum class	Domain : uint8_t {   CPU = 0 , IO = 1 , Flash = 2 , ADC = 3 ,   AsynchronousTimer = 4 }
	Clock distribution domains. More...
enum class	SUTCode : uint8_t { SUT00 = 0 , SUT01 = 1 , SUT10 = 2 , SUT11 = 3 }
	CKSEL fuse startup time subfield. More...
enum class	CKSELCode : uint8_t {   ExternalClock = 0x0 , Reserved = 0x1 , InternalCalibratedRC = 0x2 , Internal128kHzRC = 0x3 ,   LowFrequencyCrystalOption0 = 0x4 , LowFrequencyCrystalOption1 = 0x5 , FullSwingCrystalOption0 = 0x6 , FullSwingCrystalOption1 = 0x7 ,   LowPowerCrystalOption0 = 0x8 , LowPowerCrystalOption1 = 0x9 , LowPowerCrystalOption2 = 0xA , LowPowerCrystalOption3 = 0xB ,   LowPowerCrystalOption4 = 0xC , LowPowerCrystalOption5 = 0xD , LowPowerCrystalOption6 = 0xE , LowPowerCrystalOption7 = 0xF }
	All CKSEL3:0 fuse encodings from datasheet Table 10-1. More...
enum class	Prescaler : uint16_t {   Divide1 = 1 , Divide2 = 2 , Divide4 = 4 , Divide8 = 8 ,   Divide16 = 16 , Divide32 = 32 , Divide64 = 64 , Divide128 = 128 ,   Divide256 = 256 }
	CPU prescaler values. More...
enum	: uint32_t {   internal_calibrated_rc_hz = 8000000UL , internal_128khz_rc_hz = 128000UL , timer2_async_crystal_hz = 32768UL , factory_default_oscillator_hz = 8000000UL ,   factory_default_cpu_hz = 1000000UL , standard_max_cpu_hz_at_4v5 = 16000000UL , low_voltage_max_cpu_hz_at_2v7 = 8000000UL , low_voltage_max_cpu_hz_at_1v8 = 2000000UL }
	Clock ratings and defaults. More...
enum	: uint8_t { factory_default_divisor = 8 , system_prescaler_count = 9 }
	Prescaler facts. More...

Detailed Description

Clock definitions.

Enumeration Type Documentation

anonymous enum

anonymous enum : uint8_t

Prescaler facts.

Enumerator
factory_default_divisor	factory default divisor.
system_prescaler_count	system prescaler count.

anonymous enum

anonymous enum : uint32_t

Clock ratings and defaults.

Enumerator
internal_calibrated_rc_hz	internal calibrated rc hz.
internal_128khz_rc_hz	internal 128khz rc hz.
timer2_async_crystal_hz	timer2 async crystal hz.
factory_default_oscillator_hz	factory default oscillator hz.
factory_default_cpu_hz	factory default cpu hz.
standard_max_cpu_hz_at_4v5	standard max cpu hz at 4v5.
low_voltage_max_cpu_hz_at_2v7	low voltage max cpu hz at 2v7.
low_voltage_max_cpu_hz_at_1v8	low voltage max cpu hz at 1v8.

CKSELCode

enum class atmega2560::clock::CKSELCode : uint8_t

strong

All CKSEL3:0 fuse encodings from datasheet Table 10-1.

Enumerator
ExternalClock	External clock.
Reserved	Reserved encoding.
InternalCalibratedRC	Calibrated internal RC oscillator.
Internal128kHzRC	Internal 128 kHz RC oscillator.
LowFrequencyCrystalOption0	Low-frequency crystal option.
LowFrequencyCrystalOption1	Low-frequency crystal option.
FullSwingCrystalOption0	Full-swing crystal option.
FullSwingCrystalOption1	Full-swing crystal option.
LowPowerCrystalOption0	Low-power crystal option.
LowPowerCrystalOption1	Low-power crystal option.
LowPowerCrystalOption2	Low-power crystal option.
LowPowerCrystalOption3	Low-power crystal option.
LowPowerCrystalOption4	Low-power crystal option.
LowPowerCrystalOption5	Low-power crystal option.
LowPowerCrystalOption6	Low-power crystal option.
LowPowerCrystalOption7	Low-power crystal option.

Domain

enum class atmega2560::clock::Domain : uint8_t

strong

Clock distribution domains.

Enumerator
CPU	CPU clock.
IO	Peripheral I/O clock.
Flash	Flash interface clock.
ADC	ADC clock.
AsynchronousTimer	Asynchronous timer clock.

Prescaler

enum class atmega2560::clock::Prescaler : uint16_t

strong

CPU prescaler values.

Enumerator
Divide1	System prescaler division 1.
Divide2	System prescaler division 2.
Divide4	System prescaler division 4.
Divide8	System prescaler division 8.
Divide16	System prescaler division 16.
Divide32	System prescaler division 32.
Divide64	System prescaler division 64.
Divide128	System prescaler division 128.
Divide256	System prescaler division 256.

Source

enum class atmega2560::clock::Source : uint8_t

strong

Main clock source types.

Enumerator
ExternalClock	External clock input.
InternalCalibratedRC	Calibrated internal RC oscillator.
Internal128kHzRC	Internal 128 kHz oscillator.
LowFrequencyCrystal	Low-frequency crystal oscillator.
CrystalOscillator	External crystal or ceramic resonator.

SUTCode

enum class atmega2560::clock::SUTCode : uint8_t

strong

CKSEL fuse startup time subfield.

Enumerator
SUT00	Startup code 00.
SUT01	Startup code 01.
SUT10	Startup code 10.
SUT11	Startup code 11.