General
Absolute maximum ratings in Table 4 are stress ratings only, and functional operation at
the maximum is not guaranteed. Stress beyond these ratings may affect device reliability
or cause permanent damage to the device.
Unless otherwise stated, all specifications within this chapter apply over the temperature
range of -40°C to 105°C ambient temperature over the following supply ranges:
VSS = VSSA = 0 V, VDD = VDDA = 3.0 V to 3.6 V, CL ≤ 50 pF, fOP = 80 MHz.
CAUTION
This device contains protective circuitry to guard against
damage due to high static voltage or electrical fields. However,
normal precautions are advised to avoid application of any
voltages higher than maximum-rated voltages to this high-
impedance circuit. Reliability of operation is enhanced if
unused inputs are tied to an appropriate voltage level.
7.2 AC Electrical Characteristics
Tests are conducted using the input levels specified in Table 7. Unless otherwise
specified, propagation delays are measured from the 50ꢀ to the 50ꢀ point, and rise and
fall times are measured between the 10ꢀ and 90ꢀ points, as shown in Figure 3.
Low
High
V
IH
90%
50%
10%
Midpoint1
Fall Time
Input Signal
V
IL
Rise Time
The midpoint is V + (V – V )/2.
IL
IH
IL
Figure 3. Input Signal Measurement References
Figure 4 shows the definitions of the following signal states:
• Active state, when a bus or signal is driven, and enters a low impedance state
• Tri-stated, when a bus or signal is placed in a high impedance state
• Data Valid state, when a signal level has reached VOL or VOH
• Data Invalid state, when a signal level is in transition between VOL and VOH
MC56F8455x Advance Information Data Sheet, Rev. 2, 06/2012.
Freescale Semiconductor, Inc.
25
Preliminary
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