ATTINY25-20SUR Atmel, ATTINY25-20SUR Datasheet - Page 231

• Manufacturer Part Number: ATTINY25-20SUR
• Description: MCU AVR 2KB FLASH 20MHZ 8SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY25-20SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 6
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2586M–AVR–07/10
14 Dead Time Generator ........................................................................... 108
15 USI – Universal Serial Interface .......................................................... 111
16 Analog Comparator ............................................................................. 123
17 Analog to Digital Converter ................................................................ 126
18 debugWIRE On-chip Debug System .................................................. 143
13.1
13.2
13.3
14.1
15.1
15.2
15.3
15.4
15.5
16.1
16.2
17.1
17.2
17.3
17.4
17.5
17.6
17.7
17.8
17.9
17.10
17.11
17.12
17.13
18.1
18.2
18.3
18.4
18.5
Timer/Counter1 Prescaler ...............................................................................98
Counter and Compare Units ............................................................................98
Register Description ......................................................................................103
Register Description ......................................................................................109
Features ........................................................................................................111
Overview ........................................................................................................111
Functional Descriptions .................................................................................112
Alternative USI Usage ...................................................................................117
Register Descriptions ....................................................................................118
Analog Comparator Multiplexed Input ...........................................................123
Register Description ......................................................................................124
Features ........................................................................................................126
Overview ........................................................................................................126
Operation .......................................................................................................127
Starting a Conversion ....................................................................................128
Prescaling and Conversion Timing ................................................................129
Changing Channel or Reference Selection ...................................................132
ADC Noise Canceler .....................................................................................132
Analog Input Circuitry ....................................................................................133
Noise Canceling Techniques .........................................................................134
ADC Accuracy Definitions .............................................................................134
ADC Conversion Result .................................................................................136
Temperature Measurement ...........................................................................137
Register Description ......................................................................................138
Features ........................................................................................................143
Overview ........................................................................................................143
Physical Interface ..........................................................................................143
Software Break Points ...................................................................................144
Limitations of debugWIRE .............................................................................144
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