300
CHAPTER 16 SERIAL INTERFACE UART0
User’s Manual U15798EJ2V0UD
• Error tolerance range for baud rate
The tolerance range for the baud rate depends on the number of bits per frame and the counter’s division
rate [1/(16 + k)].
Figure 16-6 shows an example of the baud rate error tolerance range.
Figure 16-6. Baud Rate Error Tolerance (When k = 0), Including Sampling Errors
Basic timing
START
D0
D7
P
STOP
High-speed
limit timing
START
D0
D7
P
STOP
Low-speed
limit timing
START
D0
D7
P
STOP
32T
64T
256T
288T
320T
352T
Ideal
sampling
point
304T
336T
30.45T
60.9T
304.5T
15.5T
15.5T
0.5T
Sampling error
33.55T
67.1T
301.95T
335.5T
Remark
T: 5-bit counter’s source clock cycle
Baud rate error tolerance (when k = 0) =
±
15.5
×
100 = 4.8438 (%)
320
Содержание mPD780344 Series
Страница 2: ...2 User s Manual U15798EJ2V0UD MEMO...