atmega323l ATMEL Corporation, atmega323l Datasheet - Page 218

• Manufacturer Part Number: atmega323l
• Description: Atmega323 8-bit Avr Microcontroller With 32k Bytes Of In-system Programmable Flash
• Manufacturer: ATMEL Corporation

ATmega323 Typical
Characteristics –
Preliminary Data
218
ATmega323(L)
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
ing frequency of I/O pin.
The parts are characterized at frequencies higher than test limits. Parts are not guaran-
teed to function properly at frequencies 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 108. Active Supply Current vs. Frequency
L
*
V
CC
*f where C
60
50
40
30
20
10
0
0
1
L
2
= load capacitance, V
ACTIVE SUPPLY CURRENT vs. FREQUENCY
3
4
5
Frequency (MHz)
6
V
T = 25˚C
cc
= 2.7V
A
CC
7
= operating voltage and f = average switch-
8
V
cc
= 3.0V
9
V
V
cc
cc
= 3.6V
= 3.3V
10
V
cc
= 4V
11
V
V
cc
cc
= 5V
= 4.5V
12
13
V
cc
= 5.5V
14
V
1457G–AVR–09/03
cc
= 6V
15