MC68HC908GR4 MOTOROLA [Motorola, Inc], MC68HC908GR4 Datasheet - Page 247

• Manufacturer Part Number: MC68HC908GR4
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

18.5.3.7 Fast Data Tolerance
MC68HC908GR8 — Rev 4.0
MOTOROLA
With the misaligned character shown in
170 RT cycles at the point when the count of the transmitting device is
10 bit times
The maximum percent difference between the receiver count and the
transmitter count of a slow 9-bit character with no errors is
Figure 18-8
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
With the misaligned character shown in
154 RT cycles at the point when the count of the transmitting device is
10 bit times
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
Freescale Semiconductor, Inc.
For More Information On This Product,
Serial Communications Interface (SCI)
shows how much a fast received character can be
Go to: www.freescale.com
16 RT cycles + 10 RT cycles = 154 RT cycles.
16 RT cycles + 3 RT cycles = 163 RT cycles.
16 RT cycles = 160 RT cycles.
170 163
------------------------- -
154 160
------------------------- -
Figure 18-8. Fast Data
STOP
170
154
–
–
100
100
SAMPLES
DATA
Serial Communications Interface (SCI)
Figure
Figure
=
=
4.12%
3.90%
IDLE OR NEXT CHARACTER
·
18-7, the receiver counts
18-8, the receiver counts
Functional Description
Technical Data
247