ATtiny461A Atmel Corporation, ATtiny461A Datasheet - Page 294

• Manufacturer Part Number: ATtiny461A
• Manufacturer: Atmel Corporation

Specifications of ATtiny461A

• Flash (kbytes): 4 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 16
• Ext Interrupts: 16
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.25
• Eeprom (bytes): 256
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

iv
ATtiny261A/461A/861A
17 Self-Programming the Flash ............................................................... 163
18 Memory Programming ......................................................................... 168
19 Electrical Characteristics .................................................................... 185
20 Typical Characteristics ........................................................................ 197
16.4
16.5
16.6
17.1
17.2
17.3
17.4
17.5
17.6
17.7
17.8
17.9
18.1
18.2
18.3
18.4
18.5
18.6
18.7
19.1
19.2
19.3
19.4
19.5
19.6
19.7
19.8
19.9
20.1
20.2
20.3
Software Break Points ...................................................................................162
Limitations of debugWIRE .............................................................................162
Register Description ......................................................................................162
Performing Page Erase by SPM ....................................................................163
Filling the Temporary Buffer (Page Loading) .................................................163
Performing a Page Write ...............................................................................164
Addressing the Flash During Self-Programming ...........................................164
EEPROM Write Prevents Writing to SPMCSR ..............................................165
Reading Fuse and Lock Bits from Software ..................................................165
Preventing Flash Corruption ..........................................................................166
Programming Time for Flash when Using SPM ............................................166
Register Description ......................................................................................167
Program And Data Memory Lock Bits ...........................................................168
Fuse Bytes .....................................................................................................169
Signature Bytes .............................................................................................170
Calibration Byte .............................................................................................170
Page Size ......................................................................................................171
Serial Programming .......................................................................................171
Parallel Programming ....................................................................................175
Absolute Maximum Ratings* .........................................................................185
DC Characteristics .........................................................................................185
Speed ............................................................................................................187
Clock Characteristics .....................................................................................187
System and Reset Characteristics ................................................................188
ADC Characteristics ......................................................................................190
Analog Comparator Characteristics ...............................................................193
Serial Programming Characteristics ..............................................................193
Parallel Programming Characteristics ...........................................................194
Supply Current of I/O modules ......................................................................197
ATtiny261A ....................................................................................................199
ATtiny461A ....................................................................................................225
8197C–AVR–05/11