at90ls4433 ATMEL Corporation, at90ls4433 Datasheet - Page 101

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at90ls4433

Manufacturer Part Number
at90ls4433
Description
At90s4433 8-bit Avr Microcontroller With 4k Bytes Of In-system Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet

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Typical
Characteristics
1042H–AVR–04/03
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
switching 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.
The difference between Power-down mode with Brown-out Detector enabled and
Power-down mode with Watchdog Timer disabled represents the differential current
drawn by the Brown-out Detector.
Figure 70. Active Supply Current vs. Frequency
L
• V
35
30
25
20
15
10
5
0
CC
0
• f, where C
1
2
L
ACTIVE SUPPLY CURRENT vs. FREQUENCY
3
= load capacitance, V
4
5
6
Frequency (MHz)
T
A
7
= 25˚C
8
CC
= operating voltage and f = average
9
10
11
AT90S/LS4433
12
V
CC
13
= 2.7V
V
CC
14
= 3.0V
15
V
V
V
V
V
V
V
CC
CC
CC
CC
CC
CC
CC
= 6V
= 5.5V
= 5V
= 4.5V
= 4V
= 3.6V
= 3.3V
101

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