mc68hc908jb16 Freescale Semiconductor, Inc, mc68hc908jb16 Datasheet - Page 224
mc68hc908jb16
Manufacturer Part Number
mc68hc908jb16
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908JB16.pdf
(332 pages)
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Serial Communications Interface
Technical Data
224
With the misaligned character shown in
170 RT cycles at the point when the count of the transmitting device is
10 bit times × 16 RT cycles + 3 RT cycles = 163 RT cycles.
The maximum percent difference between the receiver count and the
transmitter count of a slow 9-bit character with no errors is
Fast Data Tolerance
Figure 12-8
misaligned without causing a noise error or a framing error. The fast stop
bit ends at RT10 instead of RT16 but is still there for the stop bit data
samples at RT8, RT9, and RT10.
For an 8-bit character, data sampling of the stop bit takes the receiver
9 bit times × 16 RT cycles + 10 RT cycles = 154 RT cycles.
With the misaligned character shown in
154 RT cycles at the point when the count of the transmitting device is
10 bit times × 16 RT cycles = 160 RT cycles.
The maximum percent difference between the receiver count and the
transmitter count of a fast 8-bit character with no errors is
RECEIVER
RT CLOCK
Serial Communications Interface Module (SCI)
shows how much a fast received character can be
170 163
------------------------- -
154 160
------------------------- -
Figure 12-8. Fast Data
STOP
170
154
–
–
×
×
100
100
SAMPLES
DATA
Figure
Figure
=
=
4.12%
3.90%
IDLE OR NEXT CHARACTER
·
12-7, the receiver counts
12-8, the receiver counts
MC68HC908JB16
Freescale Semiconductor
—
Rev. 1.1
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