ATtiny861 Automotive Atmel Corporation, ATtiny861 Automotive Datasheet - Page 199

• Manufacturer Part Number: ATtiny861 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATtiny861 Automotive

• Flash (kbytes): 8 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 16 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 150
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 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

24.3
24.3.1
7753F–AVR–01/11
Supply Current of I/O modules
Example
The tables and formulas below can be used to calculate the additional current consumption for
the different I/O modules in Active and Idle mode. The enabling or disabling of the I/O modules
are controlled by the Power Reduction Register. See
page 38
Table 24-1.
Table 24-2.
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
page
The total current consumption in idle mode with TIMER0, ADC, and USI enabled, gives:
I
CC
PRR bit
PRTIM1
PRTIM0
PRUSI
PRADC
total
CC
PRR bit
PRTIM1
PRTIM0
198, we find that the idle current consumption is ~0,085 mA at V
PRADC
PRUSI
= 2.0V and F = 1MHz. From
for details.
0.085mA
CC
and frequency settings than listed in
Additional Current Consumption for the different I/O modules (absolute values)
Additional Current Consumption (percentage) in Active and Idle mode
1
Typical numbers
65 uA
7 uA
5 uA
18 uA
clock (see
+
compared to Active with external
Additional Current consumption
V
0.10
CC
and
= 2V, F = 1MHz
+
Figure 24-2 on page
0.273
Figure 24-1 on page 197
+
26.9%
ATtiny261/ATtiny461/ATtiny861
2.6%
1.7%
7.1%
Table
0.065
24-2, third column, we see that we need to add 10%
0.122mA
423 uA
39 uA
25 uA
111 uA
198)
V
CC
Table
= 3V, F = 4MHz
“PRR – Power Reduction Register” on
24-2.
compared to Idle with external clock
Additional Current consumption
CC
1787 uA
165 uA
457 uA
102 uA
103.7%
10.0%
27.3%
V
= 2.0V and F=1MHz.
6.5%
CC
= 5V, F = 8MHz
Figure 24-3 on
Table 24-1
199