s908ab32ag0cfue Freescale Semiconductor, Inc, s908ab32ag0cfue Datasheet - Page 256

• Manufacturer Part Number: s908ab32ag0cfue
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Serial Communications Interface
Technical Data
256
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 15-8
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 15-8. Fast Data
STOP
170
154
–
–
×
×
100
100
SAMPLES
DATA
Figure
Figure
=
=
4.12%
3.90%
IDLE OR NEXT CHARACTER
·
15-7, the receiver counts
15-8, the receiver counts
MC68HC908AB32
Freescale Semiconductor
—
Rev. 1.1