MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 259
MC68HC708AS48
Manufacturer Part Number
MC68HC708AS48
Description
Advance Information
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC68HC708AS48.pdf
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MC68HC708AS48
MOTOROLA
—
Rev. 4.0
To verify the start bit and to detect noise, data recovery logic takes
samples at RT3, RT5, and RT7.
the start bit verification samples.
If start bit verification is not successful, the RT clock is reset and a new
search for a start bit begins.
To determine the value of a data bit and to detect noise, recovery logic
takes samples at RT8, RT9, and RT10.
results of the data bit samples.
Serial Communications Interface (SCI)
RT8, RT9, and RT10
RT3, RT5, and RT7
Samples
Samples
Table 17-1. Start Bit Verification
Table 17-2. Data Bit Recovery
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
Table 17-1
Determination
Verification
Start Bit
Data Bit
Yes
Yes
Yes
Yes
No
No
No
No
Serial Communications Interface (SCI)
0
0
0
1
0
1
1
1
Table 17-2
summarizes the results of
Noise Flag
Noise Flag
summarizes the
Functional Description
0
1
1
0
1
0
0
0
0
1
1
1
1
1
1
0
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