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M68ICS08GR Fiches technique(PDF) 244 Page - Freescale Semiconductor, Inc

No de pièce M68ICS08GR
Description  M68HC08 Microcontrollers
PDF  408 Pages
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Fabricant  FREESCALE [Freescale Semiconductor, Inc]
Site Internet  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

M68ICS08GR Fiches technique(HTML) 244 Page - Freescale Semiconductor, Inc

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Serial Communications Interface (SCI)
Technical Data
MC68HC908GR8 — Rev 4.0
244
Serial Communications Interface (SCI)
MOTOROLA
Start bit verification is not successful if any two of the three verification
samples are logic 1s. 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. Table 18-3 summarizes the
results of the data bit samples.
Table 18-2. Start Bit Verification
RT3, RT5, and RT7 Samples
Start Bit
Verification
Noise Flag
000
Yes
0
001
Yes
1
010
Yes
1
011
No
0
100
Yes
1
101
No
0
110
No
0
111
No
0
Table 18-3. Data Bit Recovery
RT8, RT9, and RT10 Samples
Data Bit Determination
Noise Flag
000
0
0
001
0
1
010
0
1
011
1
1
100
0
1
101
1
1
110
1
1
111
1
0
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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