ATTINY28L-4AI Atmel, ATTINY28L-4AI Datasheet - Page 79

• Manufacturer Part Number: ATTINY28L-4AI
• Description: IC AVR MCU 2KFLSH 4MHZ 3V 32TQFP
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY28L-4AI

• 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
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Ram Size: -
• Data Converters: -
• Connectivity: -

Table of Contents
1062F–AVR–07/06
Features................................................................................................. 1
Pin Configurations................................................................................ 1
Description ............................................................................................ 2
Architectural Overview......................................................................... 6
Timer/Counter0 ................................................................................... 24
Watchdog Timer.................................................................................. 27
Calibrated Internal RC Oscillator ...................................................... 29
Hardware Modulator ........................................................................... 30
Analog Comparator ............................................................................ 35
I/O Ports............................................................................................... 37
Memory Programming........................................................................ 45
Parallel Programming Characteristics.............................................. 52
Block Diagram ...................................................................................................... 2
Pin Descriptions.................................................................................................... 3
Clock Options ....................................................................................................... 4
General-purpose Register File.............................................................................. 7
ALU – Arithmetic Logic Unit.................................................................................. 7
Downloadable Flash Program Memory ................................................................ 7
Program and Data Addressing Modes.................................................................. 7
Subroutine and Interrupt Hardware Stack .......................................................... 10
Memory Access and Instruction Execution Timing ............................................. 10
I/O Memory ......................................................................................................... 11
Reset and Interrupt Handling.............................................................................. 12
Sleep Modes....................................................................................................... 21
Timer/Counter Prescaler..................................................................................... 24
Port A.................................................................................................................. 37
Port B.................................................................................................................. 40
Port D.................................................................................................................. 43
Program Memory Lock Bits ................................................................................ 45
Fuse Bits............................................................................................................. 45
Signature Bytes .................................................................................................. 45
Calibration Byte .................................................................................................. 45
Programming the Flash ...................................................................................... 45
Parallel Programming ......................................................................................... 46
ATtiny28L/V
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