MC68HC705C9A_1 Datasheet, PDF (87/157 Pages) Freescale Semiconductor, Inc – General Release Specification

Freescale Semiconductor, Inc.
General Release Specification
Receive Data In (RDI)
16X INTERNAL SAMPLING CLOCK
RT CLOCK EDGES FOR ALL THREE EXAMPLES
1RT 2RT 3RT 4RT 5RT 6RT 7RT
IDLE
START
RDI
1
1
1
1
1
1
1
1
0
0
0
0
START
NOISE
RDI
1
1
1
1
1
1
1
1
0
0
1
0
NOISE
RDI
START
1
1
1
0
1
1
1
1
0
0
0
0
Figure 9-4. SCI Examples of Start Bit Sampling Techniques
PREVIOUS BIT
SAMPLES
NEXT BIT
RDI
16RT 1RT
8RT 9RT 10RT
16RT 1RT
Figure 9-5. SCI Sampling Technique Used on All Bits
MC68HC705C9A — Rev. 2.0
Serial Communications Interface (SCI)
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