ATtiny28L Atmel Corporation, ATtiny28L Datasheet - Page 57

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ATtiny28L

Manufacturer Part Number
ATtiny28L
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATtiny28L

Flash (kbytes)
2 Kbytes
Pin Count
28
Max. Operating Frequency
4 MHz
Cpu
8-bit AVR
Hardware Qtouch Acquisition
No
Max I/o Pins
11
Ext Interrupts
10
Usb Speed
No
Usb Interface
No
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
0.03
Self Program Memory
NO
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
1
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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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
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
18
16
14
12
10
8
6
4
2
0
L
= Load Capacitance, V
0
V
CC
= 1.8V
1
2
ACTIVE SUPPLY CURRENT vs. FREQUENCY
3
4
V
CC
= 2.1V
5
CC
Frequency (MHz)
= Operating Voltage and f = Average Switching Fre-
6
T
A
7
V
= 25˚C
CC
= 2.4V
8
V
CC
9
= 2.7V
10
V
V
CC
CC
= 3.3V
= 3.0V
11
12
ATtiny28L/V
V
CC
= 3.6V
13
V
V
CC
CC
= 4.5V
= 4.0V
14
V
V
V
CC
CC
CC
= 6.0V
= 5.5V
= 5.0V
15
L
• V
CC
• f,
57

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