Detailed Description

Content of the device:

core0: the core
watchdog0: watchdog (WDG)
int0: Low level interrupt (INT0)
porta: general purpose I/O port A (PORTA)
- (porta,0..7): general purpose I/O pins (PA0..PA7)
- (porta,pcic): pin change interrupt controller
portb: general purpose I/O port B (PORTB)
- (portb,0..3): general purpose I/O pins (PB0..PB3)
- (portb,pcic): pin-change interrupt controller
counter0: 8-bit counter-timer (TCNT0)
- (counter0,prescaler): counter0/counter1 prescaler
- (counter0,compare0): compare unit 0 of counter0
  - (counter0,compare0,pin): counter0 compare0 output (OC0A)
- (counter0,compare1): compare unit 1 of counter0
  - (counter0,compare1,pin): counter0 compare1 output (OC0B)
- (counter0,pin): external clock source (T0)
counter1: 16-bit counter-timer (TCNT1)
- (counter1,prescaler): counter0/counter1 prescaler
- (counter1,compare0): compare unit 0 of counter1
  - (counter1,compare0,pin): counter1 compare0 output (OC1A)
- (counter1,compare1): compare unit 1 of counter1
  - (counter1,compare1,pin): counter1 compare1 output (OC1B)
- (counter1,capture0): capture unit 0 of counter1
  - (counter1,capture0,pin): counter1 capture0 input (ICP1)
- (counter1,pin): external clock source (T1)
usi0: Universal Serial Interface
- (pin,usck): USI clock (3 wire mode)
- (pin,di): USI data input (3 wire mode)
- (pin,do): USI data output (3 wire mode)
acmp0: analog Comparator
- (pin,ain0): analog comparator positive input (AIN0)
- (pin,ain1): analog comparator negative input (AIN1)
adc0: 10-bit Analog to Digital Converter (ADC)
- (pin,adc0..7): ADC inputs
flash0: Flash memory
eeprom0: EEPROM memory

Modules
	ATtiny24

	ATtiny44

	ATtiny84

Target device description
These definitions are computed by HWA from the target device name.
#define	HW_DEVICE_ATTINYX4

#define	HW_DEVICE_RAM_START 0x0060

#define	HW_DEVICE_APP_START 0x0022

Fuse bytes
These definitions are computed by HWA from the target device name and the definitions provided by the user.
#define	HW_DEVICE_FUSE_EB (0xFE \| HW_DEVICE_SELFPRGEN)

#define	HW_DEVICE_FUSE_HB

#define	HW_DEVICE_FUSE_LB

User-defineable symbols
Before including the device-specific header, the user can define these symbols to describe the configuration of the target device. HWA defines undefined symbols with factory values.
#define	HW_DEVICE_CLK_SRC rc_8MHz

#define	HW_DEVICE_CLK_PSC 8

#define	HW_DEVICE_STARTUP_DELAYS

#define	HW_DEVICE_CLOCK_OUTPUT disabled

#define	HW_DEVICE_SELF_PROGRAMMING enabled

#define	HW_DEVICE_EXTERNAL_RESET enabled

#define	HW_DEVICE_DEBUG_WIRE disabled

#define	HW_DEVICE_SERIAL_PROGRAMMING enabled

#define	HW_DEVICE_WATCHDOG_ALWAYS_ON no

#define	HW_DEVICE_PRESERVE_EEPROM_FROM_CHIP_ERASE no

#define	HW_DEVICE_BROWNOUT_DETECTION off

Macro Definition Documentation

◆ HW_DEVICE_APP_START

#define HW_DEVICE_APP_START 0x0022

Address of first application byte (after IRQ vector table)

◆ HW_DEVICE_ATTINYX4

#define HW_DEVICE_ATTINYX4

Device family

◆ HW_DEVICE_BROWNOUT_DETECTION

#define HW_DEVICE_BROWNOUT_DETECTION off

Brown-out detection level

off
1700_2000mV
2500_2900mV
4100_4500mV

◆ HW_DEVICE_CLK_PSC

#define HW_DEVICE_CLK_PSC 8

Clock prescaler

1: Clock not prescaled
8: Clock divided by 8

◆ HW_DEVICE_CLK_SRC

#define HW_DEVICE_CLK_SRC rc_8MHz

How the device is clocked.

external: External source on pin CLKI
rc_8MHz: Internal RC oscillator
rc_128kHz: Internal RC oscillator (watchdog)
low_freq_xosc: Crystal/resonator oscillator between pins XTAL1 and XTAL2
xosc: Crystal/resonator oscillator between pins XTAL1 and XTAL2

◆ HW_DEVICE_CLOCK_OUTPUT

#define HW_DEVICE_CLOCK_OUTPUT disabled

Whether the device outputs its clock

enabled
disabled

◆ HW_DEVICE_DEBUG_WIRE

#define HW_DEVICE_DEBUG_WIRE disabled

Whether the Debug Wire is operationnal

enabled
disabled

◆ HW_DEVICE_EXTERNAL_RESET

#define HW_DEVICE_EXTERNAL_RESET enabled

Whether the device can be reset via its RESET pin

enabled
disabled

◆ HW_DEVICE_FUSE_EB

#define HW_DEVICE_FUSE_EB (0xFE | HW_DEVICE_SELFPRGEN)

Computed value of the fuse extended byte.

◆ HW_DEVICE_FUSE_HB

#define HW_DEVICE_FUSE_HB

Value:

  HW_DEVICE_RSTDISBL<<7 |                       \
  HW_DEVICE_DWEN<<6 |                           \
  HW_DEVICE_SPIEN<<5 |                          \
  HW_DEVICE_WDTON<<4 |                          \
  HW_DEVICE_EESAVE<<3 |                         \
  HW_DEVICE_BODLEVEL

Computed value of the fuse high byte.

◆ HW_DEVICE_FUSE_LB

#define HW_DEVICE_FUSE_LB

Value:

  HW_DEVICE_CKDIV8<<7 |                         \
  HW_DEVICE_CKOUT<<6 |                          \
  HW_DEVICE_SUT10<<4 |                          \
  HW_DEVICE_CKSEL31<<1 |                        \
  HW_DEVICE_CKSEL0

Computed value of the fuse low byte.

◆ HW_DEVICE_PRESERVE_EEPROM_FROM_CHIP_ERASE

#define HW_DEVICE_PRESERVE_EEPROM_FROM_CHIP_ERASE no

Whether the EEPROM memory is erased when a chip erase occurs

enabled
disabled

◆ HW_DEVICE_RAM_START

#define HW_DEVICE_RAM_START 0x0060

Address of first RAM byte

◆ HW_DEVICE_SELF_PROGRAMMING

#define HW_DEVICE_SELF_PROGRAMMING enabled

Whether the device can write into its Flash program memory

enabled
disabled

◆ HW_DEVICE_SERIAL_PROGRAMMING

#define HW_DEVICE_SERIAL_PROGRAMMING enabled

Whether the device can be programmed via the SPI

enabled
disabled

◆ HW_DEVICE_STARTUP_DELAYS

#define HW_DEVICE_STARTUP_DELAYS

Startup delays

Valid values depend on the clocking configuration.

6CK_14CK
6CK_14CK_4ms
6CK_14CK_64ms
1KCK_4ms
1KCK_64ms
32KCK_64ms
258CK_14CK_4ms
258CK_14CK_64ms
1KCK_14CK
1KCK_14CK_4ms
1KCK_14CK_64ms
16KCK_14CK
16KCK_14CK_4ms
16KCK_14CK_64ms

◆ HW_DEVICE_WATCHDOG_ALWAYS_ON

#define HW_DEVICE_WATCHDOG_ALWAYS_ON no

Whether the watchdog is always running

enabled
disabled