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ATTINY28L Datasheet(PDF) 10 Page - ATMEL Corporation |
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ATTINY28L Datasheet(HTML) 10 Page - ATMEL Corporation |
10 / 13 page 10 ATtiny28L/V 1062F–AVR–07/06 Memories I/O Memory The I/O space definition of the ATtiny28 is shown in Table 3. Note: Reserved and unused locations are not shown in the table. All ATtiny28 I/O and peripherals are placed in the I/O space. The I/O locations are accessed by the IN and OUT instructions transferring data between the 32 general-pur- pose working registers and the I/O space. I/O registers within the address range $00 - $1F are directly bit-accessible using the SBI and CBI instructions. In these registers, the value of single bits can be checked by using the SBIS and SBIC instructions. Refer to the Instruction Set section for more details. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses should never be written. The I/O and peripherals control registers are explained in the following sections. Table 3. ATtiny28 I/O Space Address Hex Name Function $3F SREG Status Register $1B PORTA Data Register, Port A $1A PACR Port A Control Register $19 PINA Input Pins, Port A $16 PINB Input Pins, Port B $12 PORTD Data Register, Port D $11 DDRD Data Direction Register, Port D $10 PIND Input Pins, Port D $08 ACSR Analog Comparator Control and Status Register $07 MCUCS MCU Control and Status Register $06 ICR Interrupt Control Register $05 IFR Interrupt Flag Register $04 TCCR0 Timer/Counter0 Control Register $03 TCNT0 Timer/Counter0 (8-bit) $02 MODCR Modulation Control Register $01 WDTCR Watchdog Timer Control Register $00 OSCCAL Oscillator Calibration Register |
Similar Part No. - ATTINY28L_14 |
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Similar Description - ATTINY28L_14 |
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