ATTINY20-SSU Atmel, ATTINY20-SSU Datasheet - Page 221

• Manufacturer Part Number: ATTINY20-SSU
• Description: MCU AVR 2KB FLASH 12MHZ 14SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY20-SSU

• 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: *
• Processor Series: ATtiny
• Core: AVR
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: SPI, TWI
• Maximum Clock Frequency: 12 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 2
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

8235B–AVR–04/11
13 Timer/Counter Prescaler ..................................................................... 105
14 Analog Comparator ............................................................................. 108
15 Analog to Digital Converter ................................................................ 112
16 SPI – Serial Peripheral Interface ......................................................... 129
17 TWI – Two Wire Slave Interface .......................................................... 138
12.6
12.7
12.8
12.9
12.10
12.11
13.1
13.2
13.3
14.1
14.2
15.1
15.2
15.3
15.4
15.5
15.6
15.7
15.8
15.9
15.10
15.11
15.12
15.13
16.1
16.2
16.3
16.4
16.5
Output Compare Units .....................................................................................83
Compare Match Output Unit ............................................................................85
Modes of Operation .........................................................................................86
Timer/Counter Timing Diagrams .....................................................................93
Accessing 16-bit Registers ..............................................................................95
Register Description ........................................................................................99
Prescaler Reset .............................................................................................105
External Clock Source ...................................................................................105
Register Description ......................................................................................107
Analog Comparator Multiplexed Input ...........................................................109
Register Description ......................................................................................109
Features ........................................................................................................112
Overview ........................................................................................................112
Operation .......................................................................................................113
Starting a Conversion ....................................................................................114
Prescaling and Conversion Timing ................................................................115
Changing Channel or Reference Selection ...................................................118
ADC Noise Canceler .....................................................................................119
Analog Input Circuitry ....................................................................................119
Noise Canceling Techniques .........................................................................120
ADC Accuracy Definitions .............................................................................120
ADC Conversion Result .................................................................................123
Temperature Measurement ...........................................................................123
Register Description ......................................................................................124
Features ........................................................................................................129
Overview ........................................................................................................129
SS Pin Functionality ......................................................................................133
Data Modes ...................................................................................................134
Register Description ......................................................................................135
ATtiny20
iii