MPC8548E Freescale, MPC8548E Datasheet - Page 25

• Manufacturer Part Number: MPC8548E
• Description: Integrated Processor
• Manufacturer: Freescale

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7
This section describes the DC and AC electrical specifications for the DUART interface of the
MPC8548E.
7.1
Table 19
7.2
Table 20
Freescale Semiconductor
High-level input voltage
Low-level input voltage
Input current (V
High-level output voltage (OV
Low-level output voltage (OV
Note:
1. Note that the symbol V
Minimum baud rate
Maximum baud rate
Oversample rate
Notes:
1. Guaranteed by design.
2. f
3. Actual attainable baud rate will be limited by the latency of interrupt processing.
4. The middle of a start bit is detected as the 8
sampled each 16
CCB
refers to the internal platform clock.
DUART
provides the DC electrical characteristics for the DUART interface.
provides the AC timing parameters for the DUART interface.
DUART DC Electrical Characteristics
DUART AC Electrical Specifications
IN
1
MPC8548E PowerQUICC™ III Integrated Processor Hardware Specifications, Rev. 4
= 0 V or V
th
sample.
IN
, in this case, represents the OV
Parameter
DD
IN
DD
= V
= min, I
= min, I
DD)
Table 19. DUART DC Electrical Characteristics
Parameter
Table 20. DUART AC Timing Specifications
OL
OH
= 2 mA)
= –2 mA)
th
sampled 0 after the 1-to-0 transition of the start bit. Subsequent bit values are
IN
symbol referenced in
Symbol
V
V
V
V
I
OH
IN
OL
IH
IL
Table 1
f
CCB
–0.3
Min
2.4
—
—
f
2
/1,048,576
CCB
Value
and
16
/16
Table
OV
2.
DD
Max
0.8
0.4
±5
—
baud
baud
Unit
+ 0.3
—
1, 2, 3
Notes
Unit
1, 2
1, 4
DUART
μA
V
V
V
V
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