ATtiny24A Atmel Corporation, ATtiny24A Datasheet - Page 183

• Manufacturer Part Number: ATtiny24A
• Manufacturer: Atmel Corporation

Specifications of ATtiny24A

• Flash (kbytes): 2 Kbytes
• Pin Count: 14
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 4
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 12
• Ext Interrupts: 12
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.12
• Eeprom (bytes): 128
• 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: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

21.1.1
21.2
21.2.1
8183D–AVR–04/11
ATtiny24A
Example
Current Consumption in Active Mode
Table 21-2.
Calculate the expected current consumption in idle mode with USI, TIMER0, and ADC enabled
at V
to add 5% for the USI, 10% for TIMER0, and 20% for the ADC. Reading from
page
total current consumption in idle mode with USI, TIMER0, and ADC enabled is therefore:
Figure 21-1.
I
CCTOT
PRR bit
PRTIM1
PRTIM0
PRUSI
PRADC
CC
213, we find that current consumption in idle mode at 2V and 1 MHz is about 0.04 mA. The
0,8
0,6
0,4
0,2
≈
= 2.0V and f = 1 MHz. From
1
0
0
0,05mA
Additional Current Consumption (percentage) in Active and Idle mode
0,1
×
Active Supply Current vs. Low Frequency
0.1 - 1.0 MHz, PRR = 0xFF
(
1
Current consumption additional to
active mode with external clock
(see
+
0,05
0,2
Figure 21-56
+
0,10
0,3
+
0,20
1 %
3 %
1 %
5 %
Table 21-2 on page
and
)
0,4
≈
Figure
0,06mA
Frequency (MHz)
0,5
21-57)
0,6
183, third column, we see that we need
Current consumption additional to
idle mode with external clock
(see
ATtiny24A/44A/84A
0,7
Figure 21-61
0,8
10 %
20 %
5 %
5 %
and
0,9
Figure 21-61 on
Figure
21-62)
1
5.5 V
5.0 V
4.5 V
4.0 V
3.3 V
2.7 V
1.8 V
183