ATtiny44A Atmel Corporation, ATtiny44A Datasheet - Page 174

• Manufacturer Part Number: ATtiny44A
• Manufacturer: Atmel Corporation

Specifications of ATtiny44A

• Flash (kbytes): 4 Kbytes
• Pin Count: 14
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 6
• 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): 0.25
• 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: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

Table 20-1.
Notes:
20.3
174
Symbol
I
CC
1. Typical values at 25°C.
2. “Min” means the lowest value where the pin is guaranteed to be read as high.
3. “Max” means the highest value where the pin is guaranteed to be read as low.
4. Not tested in production.
5. Although each I/O port can sink more than the test conditions (10 mA at V
6. Although each I/O port can source more than the test conditions (10 mA at V
7. The RESET pin must tolerate high voltages when entering and operating in programming modes and, as a consequence,
8. These are test limits, which account for leakage currents of the test environment. Actual device leakage currents are lower.
9. Values are with external clock using methods described in
10. BOD Disabled.
Speed
ATtiny24A/44A/84A
conditions (non-transient), the sum of all I
may exceed the related specification. Pins are not guaranteed to sink current greater than the listed test condition.
conditions (non-transient), the sum of all I
may exceed the related specification. Pins are not guaranteed to source current greater than the listed test condition.
has a weak drive strength as compared to regular I/O pins. See
(starting on
enabled (PRR = 0xFF) and there is no I/O drive.
Parameter
Supply Current,
Active Mode
Supply Current,
Idle Mode
Supply Current,
Power-Down Mode
DC Characteristics. T
(9)
page
(9)
The maximum operating frequency of the device depends on V
relationship between maximum frequency and V
Figure 20-1.
226).
(10)
A
= -40°C to +85°C (Continued)
20 MHz
Condition
f = 1 MHz, V
f = 4 MHz, V
f = 8 MHz, V
f = 1 MHz, V
f = 4 MHz, V
f = 8 MHz, V
WDT enabled, V
WDT disabled, V
4 MHz
Maximum Frequency vs. V
OL
OH
1.8V
(for all ports) should not exceed 60 mA. If I
(for all ports) should not exceed 60 mA. If I
CC
CC
CC
CC
CC
CC
= 2V
= 3V
= 5V
= 2V
= 3V
= 5V
CC
CC
= 3V
= 3V
“Minimizing Power Consumption” on page
Figure
CC
Min
21-87,
CC
is linear in the region 1.8V < V
CC
CC
= 5V, 5 mA at V
Figure
= 5V, 5 mA at V
Typ
0.25
0.04
0.25
0.13
1.2
4.4
1.3
4.5V
21-88,
4
(1)
OL
OH
CC.
exceeds the test conditions, V
exceeds the test condition, V
As shown in
Figure
CC
CC
= 3V) under steady state
= 3V) under steady state
21-89, and
5.5V
Max
35. Power Reduction is
0.5
0.2
0.6
10
2
2
7
2
Figure
CC
8183D–AVR–04/11
Figure 21-90
< 4.5V.
20-1, the
Units
mA
mA
mA
mA
mA
mA
µA
µA
OH
OL