ATTINY28L-4AU Atmel, ATTINY28L-4AU Datasheet - Page 10

• Manufacturer Part Number: ATTINY28L-4AU
• Description: IC MCU AVR 2K FLASH 4MHZ 32-TQFP
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY28L-4AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 11
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFP, 32-VQFP
• Processor Series: ATTINY2x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 32 B
• Maximum Clock Frequency: 4 MHz
• Number Of Programmable I/os: 11
• Number Of Timers: 1
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Package: 32TQFP
• Device Core: AVR
• Family Name: ATtiny
• Maximum Speed: 4 MHz
• Ram Size: 32 Byte
• Operating Supply Voltage: 3.3|5 V
• For Use With: ATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIPATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Ram Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

Memories
I/O Memory
10
ATtiny28L/V
The I/O space definition of the ATtiny28 is shown in Table 3.
Table 3. ATtiny28 I/O Space
Note:
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.
Address Hex
$3F
$1B
$1A
$19
$16
$12
$11
$10
$08
$07
$06
$05
$04
$03
$02
$01
$00
Reserved and unused locations are not shown in the table.
Name
SREG
PORTA
PACR
PINA
PINB
PORTD
DDRD
PIND
ACSR
MCUCS
ICR
IFR
TCCR0
TCNT0
MODCR
WDTCR
OSCCAL
Function
Status Register
Data Register, Port A
Port A Control Register
Input Pins, Port A
Input Pins, Port B
Data Register, Port D
Data Direction Register, Port D
Input Pins, Port D
Analog Comparator Control and Status Register
MCU Control and Status Register
Interrupt Control Register
Interrupt Flag Register
Timer/Counter0 Control Register
Timer/Counter0 (8-bit)
Modulation Control Register
Watchdog Timer Control Register
Oscillator Calibration Register
1062F–AVR–07/06