ATTINY20-MMHR Atmel, ATTINY20-MMHR Datasheet - Page 219

• Manufacturer Part Number: ATTINY20-MMHR
• Description: MCU AVR 2KB FLASH 12MHZ 20QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY20-MMHR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 12MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 12
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Table of Contents
8235B–AVR–04/11
1
2
3
4
5
6
7
Features ..................................................................................................... 1
Pin Configurations ................................................................................... 2
Overview ................................................................................................... 4
General Information ................................................................................. 6
CPU Core .................................................................................................. 7
Memories ................................................................................................ 15
Clock System ......................................................................................... 18
Power Management and Sleep Modes ................................................. 25
1.1
3.1
3.2
3.3
3.4
3.5
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
5.1
5.2
5.3
6.1
6.2
6.3
6.4
6.5
7.1
7.2
Pin Description ..................................................................................................2
Resources .........................................................................................................6
Code Examples .................................................................................................6
Capacitive Touch Sensing .................................................................................6
Data Retention ...................................................................................................6
Disclaimer ..........................................................................................................6
Architectural Overview .......................................................................................7
ALU – Arithmetic Logic Unit ...............................................................................8
Status Register ..................................................................................................8
General Purpose Register File ..........................................................................9
Stack Pointer ...................................................................................................10
Instruction Execution Timing ...........................................................................10
Reset and Interrupt Handling ...........................................................................11
Register Description ........................................................................................13
In-System Re-programmable Flash Program Memory ....................................15
Data Memory ...................................................................................................15
I/O Memory ......................................................................................................17
Clock Subsystems ...........................................................................................18
Clock Sources .................................................................................................19
System Clock Prescaler ..................................................................................20
Starting ............................................................................................................20
Register Description ........................................................................................22
Sleep Modes ....................................................................................................25
Software BOD Disable .....................................................................................26
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