MPC8347 FREESCALE [Freescale Semiconductor, Inc], MPC8347 Datasheet - Page 23

• Manufacturer Part Number: MPC8347
• Description: Integrated Host Processor Hardware Specifications
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

7
This section describes the DC and AC electrical specifications for the DUART interface of the
MPC8347EA.
7.1
Table 20
7.2
Table 21
Freescale Semiconductor
Minimum baud rate
Maximum baud rate
Oversample rate
Notes:
1. Actual attainable baud rate will be limited by the latency of interrupt processing.
2. The middle of a start bit is detected as the 8
values are sampled each 16
DUART
provides the DC electrical characteristics for the DUART interface of the MPC8347EA.
provides the AC timing parameters for the DUART interface of the MPC8347EA.
DUART DC Electrical Characteristics
DUART AC Electrical Specifications
MPC8347EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 3
High-level input voltage
Low-level input voltage
Input current
(0.8 V ≤V
High-level output voltage,
I
Low-level output voltage,
I
Note:
1. Note that the symbol V
OH
OL
and
= 100 μA
= –100 μA
Table
IN
Parameter
≤ 2 V)
2.
th
Table 20. DUART DC Electrical Characteristics
Parameter
sample.
Table 21. DUART AC Timing Specifications
IN
, in this case, represents the OV
th
sampled 0 after the 1-to-0 transition of the start bit. Subsequent bit
Symbol
V
V
V
V
I
OH
IN
OL
IH
IL
OV
DD
–0.3
Min
—
—
2
– 0.2
IN
symbol referenced in
OV
DD
+/- 5
Max
0.8
0.2
> 1,000,000
—
+ 0.3
Value
256
16
Unit
μA
Table 1
V
V
V
V
baud
baud
Unit
—
Notes
1
2
DUART
23