ATtiny861 Atmel Corporation, ATtiny861 Datasheet - Page 198

• Manufacturer Part Number: ATtiny861
• Manufacturer: Atmel Corporation

Specifications of ATtiny861

• Flash (kbytes): 8 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): 0.5
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• 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

20.1.0.1
20.2
198
Active Supply Current
ATtiny261/461/861
Example
Table 20-2.
It is possible to calculate the typical current consumption based on the numbers from
for other V
Calculate the expected current consumption in idle mode with TIMER0, ADC, and USI enabled
at V
for the TIMER0, 27.3 % for the ADC, and 6.5 % for the USI module. Reading from
on page
The total current consumption in idle mode with TIMER0, ADC, and USI enabled, gives:
Figure 20-1. Active Supply Current vs. Low Frequency (0.1 - 1.0 MHz)
I
CC
PRR bit
PRTIM1
PRTIM0
PRUSI
PRADC
total
CC
≈
1,2
0,8
0,6
0,4
0,2
= 2.0V and F = 1MHz. From
0,085mA
1
0
201, we find that the idle current consumption is ~0,085 mA at V
0
CC
and frequency settings than listed in
Additional Current Consumption (percentage) in Active and Idle mode.
•
0,1
(
Additional Current consumption
compared to Active with external
clock (see
198
1
+
0,10
ACTIVE SUPPLY CURRENT vs. LOW FREQUENCY
and
0,2
Figure 20-2 on page
+
0,273
Figure 20-1 on page
26.9 %
0,3
1.7 %
2.6 %
7.1 %
+
0,065
Table
0,4
)
Frequency (MHz)
≈
0.1 - 1.0 MHZ
20-2, third column, we see that we need to add 10%
0,122mA
199)
0,5
Table
Additional Current consumption
compared to Idle with external
clock (see
201
0,6
20-2.
and
0,7
Figure 20-7 on page
Figure 20-6 on page
103.7 %
10.0 %
27.3 %
6.5 %
0,8
CC
= 2.0V and F=1MHz.
0,9
201)
2588E–AVR–08/10
Figure 20-6
1
Table 20-1
5.5 V
5.0 V
4.5 V
4.0 V
3.3 V
2.7 V
1.8 V