ATTINY461-20MU Atmel, ATTINY461-20MU Datasheet - Page 239

• Manufacturer Part Number: ATTINY461-20MU
• Description: IC AVR MCU 4K 20MHZ 32-QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY461-20MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Processor Series: ATTINY4x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: 2-Wire, SPI, USI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 2
• 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: 10 bit, 11 Channel
• For Use With: ATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIPATAVRBC100 - REF DESIGN KIT BATTERY CHARGER770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2588E–AVR–08/10
13 USI – Universal Serial Interface .......................................................... 125
14 AC – Analog Comparator .................................................................... 137
15 ADC – Analog to Digital Converter ..................................................... 142
16 debugWIRE On-chip Debug System .................................................. 163
12.7
12.8
12.9
12.10
12.11
12.12
13.1
13.2
13.3
13.4
13.5
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
Compare Match Output Unit ............................................................................97
Modes of Operation .........................................................................................99
Timer/Counter Timing Diagrams ...................................................................106
Fault Protection Unit ......................................................................................107
Accessing 10-Bit Registers ............................................................................108
Register Description ......................................................................................112
Features ........................................................................................................125
Overview ........................................................................................................125
Functional Descriptions .................................................................................126
Alternative USI Usage ...................................................................................132
Register Descriptions ....................................................................................132
Analog Comparator Multiplexed Input ...........................................................137
Register Description ......................................................................................139
Features ........................................................................................................142
Overview ........................................................................................................142
Operation .......................................................................................................143
Starting a Conversion ....................................................................................144
Prescaling and Conversion Timing ................................................................145
Changing Channel or Reference Selection ...................................................148
ADC Noise Canceler .....................................................................................149
Analog Input Circuitry ....................................................................................150
Noise Canceling Techniques .........................................................................150
ADC Accuracy Definitions .............................................................................151
ADC Conversion Result .................................................................................153
Temperature Measurement ...........................................................................154
Register Description ......................................................................................155
Features ........................................................................................................163
Overview ........................................................................................................163
Physical Interface ..........................................................................................163
Software Break Points ...................................................................................164
Limitations of debugWIRE .............................................................................164
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