
367
7682C–AUTO–04/08
AT90CAN32/64/128
Notes:
1. All DC Characteristics contained in this datasheet are based on simulation and characterization of other AVR microcontrol-
lers manufactured in the same process technology. These values are preliminary values representing design targets, and
will be updated after characterization of actual silicon.
2. “Max” means the highest value where the pin is guaranteed to be read as low
3. “Min” means the lowest value where the pin is guaranteed to be read as high
4. Although each I/O port can sink more than the test conditions (20 mA at VCC = 5V, 10 mA at VCC = 3V) under steady state
conditions (non-transient), the following must be observed:
TQFP and QFN Package:
1] The sum of all IOL, for all ports, should not exceed 400 mA.
2] The sum of all IOL, for ports A0 - A7, G2, C3 - C7 should not exceed 300 mA.
3] The sum of all IOL, for ports C0 - C2, G0 - G1, D0 - D7, XTAL2 should not exceed 150 mA.
4] The sum of all IOL, for ports B0 - B7, G3 - G4, E0 - E7 should not exceed 150 mA.
5] The sum of all IOL, for ports F0 - F7, should not exceed 200 mA.
If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater
than the listed test condition.
5. Although each I/O port can source more than the test conditions (-20 mA at VCC = 5V, -10 mA at VCC = 3V) under steady
state conditions (non-transient), the following must be observed:
TQFP and QFN Package:
1] The sum of all IOH, for all ports, should not exceed -400 mA.
2] The sum of all IOH, for ports A0 - A7, G2, C3 - C7 should not exceed -300 mA.
3] The sum of all IOH, for ports C0 - C2, G0 - G1, D0 - D7, XTAL2 should not exceed 1-50 mA.
4] The sum of all IOH, for ports B0 - B7, G3 - G4, E0 - E7 should not exceed -150 mA.
5] The sum of all IOH, for ports F0 - F7, should not exceed -200 mA.
If IOH exceeds the test condition, VOH may exceed the related specification. Pins are not guaranteed to source current
greater than the listed test condition.
27.3
External Clock Drive Characteristics
Figure 27-1. External Clock Drive Waveforms
IACLK
Analog Comparator
Input Leakage Current
VCC = 5V
Vin = VCC/2
– 50
50
nA
tACID
Analog Comparator
Propagation Delay
Common Mode Vcc/2
VCC = 2.7V
170
ns
VCC = 5.0V
180
ns
TA = -40°C to +125°C, VCC = 2.7V to 5.5V (unless otherwise noted) (Continued)
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
V IL1
V IH1