ATtiny28L

Manufacturer Part NumberATtiny28L
ManufacturerAtmel Corporation
ATtiny28L datasheets
 


Specifications of ATtiny28L

Flash (kbytes)2 KbytesPin Count28
Max. Operating Frequency4 MHzCpu8-bit AVR
Hardware Qtouch AcquisitionNoMax I/o Pins11
Ext Interrupts10Usb SpeedNo
Usb InterfaceNoGraphic LcdNo
Video DecoderNoCamera InterfaceNo
Analog Comparators1Resistive Touch ScreenNo
Temp. SensorNoCrypto EngineNo
Sram (kbytes)0.03Self Program MemoryNO
Dram MemoryNoNand InterfaceNo
PicopowerNoTemp. Range (deg C)-40 to 85
I/o Supply Class1.8 to 5.5Operating Voltage (vcc)1.8 to 5.5
FpuNoMpu / Mmuno / no
Timers132khz RtcNo
Calibrated Rc OscillatorYes  
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Typical
Characteristics
1062F–AVR–07/06
The following charts show typical behavior. These figures are not tested during manu-
facturing. All current consumption measurements are performed with all I/O pins
configured as inputs and with internal pull-ups enabled. A sine wave generator with rail-
to-rail output is used as clock source.
The power consumption in Power-down mode is independent of clock selection.
The current consumption is a function of several factors, such as: operating voltage,
operating frequency, loading of I/O pins, switching rate of I/O pins, code executed and
ambient temperature. The dominating factors are operating voltage and frequency. The
current drawn from capacitive loaded pins may be estimated (for one pin) as C
where C
= Load Capacitance, V
L
CC
quency of I/O pin.
The parts are characterized at frequencies and voltages higher than test limits. Parts are
not guaranteed to function properly at frequencies and voltages higher than the ordering
code indicates.
The difference between current consumption in Power-down mode with Watchdog
Timer enabled and Power-down mode with Watchdog Timer disabled represents the dif-
ferential current drawn by the Watchdog Timer.
Figure 42. Active Supply Current vs. Frequency
ACTIVE SUPPLY CURRENT vs. FREQUENCY
18
16
14
12
10
8
6
4
2
V
= 2.1V
CC
0
V
= 1.8V
CC
0
1
2
3
4
5
ATtiny28L/V
= Operating Voltage and f = Average Switching Fre-
T
= 25˚C
A
V
V
V
= 3.6V
CC
V
= 3.3V
CC
V
= 3.0V
CC
V
= 2.7V
CC
V
= 2.4V
CC
6
7
8
9
10
11
12
13
Frequency (MHz)
• V
• f,
L
CC
V
= 6.0V
CC
V
= 5.5V
CC
V
= 5.0V
CC
= 4.5V
CC
= 4.0V
CC
14
15
57