MEGA128CAN Datasheet, PDF (374/413 Pages) ATMEL Corporation – Microcontroller WITH 128K BYTES OF ISP FLASH AND CAN CONTROLLER

AT90CAN128 Typical • The following charts show typical behavior. These figures are not tested during
Characteristics
manufacturing. 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_L*V_CC*f where C_L = load capacitance, V_CC = operating voltage and f = average
switching frequency of I/O pin.
• The parts are characterized at frequencies higher than test limits. Parts are not
guaranteed 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
differential current drawn by the Watchdog Timer.
Active Supply Current
Figure 180. Active Supply Current vs. Frequency (0.1 - 1.0 MHz)
ACTIVE SUPPLY CURRENT vs. FREQUENCY (0.1 - 1 MHz)
3
2.5
2
1.5
1
0.5
0
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Frequency (MHz)
5.50V
5.00V
4.50V
4.00V
3.30V
3.00V
2.70V
374 AT90CAN128
4250E–CAN–12/04