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CHAPTER 16 ASYNCHRONOUS SERIAL INTERFACE (UART)
User’s Manual U16890EJ1V0UD
463
16.6.3 Baud rate setting example
Table 16-4. Baud Rate Generator Setting Data
f
XX
= 20 MHz
f
XX
= 16 MHz
f
XX
= 10 MHz
Baud Rate
(bps)
f
UCLK
k
ERR
f
UCLK
k
ERR
f
UCLK
k
ERR
300
f
XX
/512
41H (65)
0.16
f
XX
/1024
1AH (26)
0.16
f
XX
/256
41H (65)
0.16
600
f
XX
/256
41H (65)
0.16
f
XX
/1024
0DH (13)
0.16
f
XX
/128
41H (65)
0.16
1200
f
XX
/128
41H (65)
0.16
f
XX
/512
0DH (13)
0.16
f
XX
/64
41H (65)
0.16
2400
f
XX
/64
41H (65)
0.16
f
XX
/256
0DH (13)
0.16
f
XX
/32
41H (65)
0.16
4800
f
XX
/32
41H (65)
0.16
f
XX
/128
0DH (13)
0.16
f
XX
/16
41H (65)
0.16
9600
f
XX
/16
41H (65)
0.16
f
XX
/64
0DH (13)
0.16
f
XX
/8
41H (65)
0.16
10400
f
XX
/64
0FH (15)
0.16
f
XX
/64
0CH (12)
0.16
f
XX
/32
0FH (15)
0.16
19200
f
XX
/8
41H (65)
0.16
f
XX
/32
0DH (13)
0.16
f
XX
/4
41H (65)
0.16
24000
f
XX
/32
0DH (13)
0.16
f
XX
/2
A7H (167)
0.20
f
XX
/16
0DH (13)
0.16
31250
f
XX
/32
0AH (10)
0.00
f
XX
/32
08H (8)
0.00
f
XX
/16
0AH (10)
0
33600
f
XX
/2
95H (149)
0.13
f
XX
/2
77H (119)
0.04
f
XX
95H (149)
0.13
38400
f
XX
/4
41H (65)
0.16
f
XX
/16
0DH (13)
0.16
f
XX
/2
41H (65)
0.16
48000
f
XX
/16
0DH (13)
0.16
f
XX
/2
53H (83)
0.40
f
XX
/8
0DH (13)
0.16
56000
f
XX
/2
59H (89)
0.32
f
XX
/2
47H (71)
0.60
f
XX
59H (89)
0.32
62500
f
XX
/16
0AH (10)
0.00
f
XX
/16
08H (8)
0.00
f
XX
/8
0AH (10)
0.00
76800
f
XX
/2
41H (65)
0.16
f
XX
/8
0DH (13)
0.16
f
XX
41H (65)
0.16
115200
f
XX
/2
2BH (43)
0.94
f
XX
/2
23H (35)
0.79
f
XX
2BH (43)
0.94
153600
f
XX
/2
21H (33)
1.36
f
XX
/4
0DH (13)
0.16
f
XX
21H (33)
1.36
312500
f
XX
/4
08H (8)
0
f
XX
/2
0DH (13)
1.54
f
XX
/2
08H (8)
0.00
Caution The allowable frequency of the base clock (f
UCLK
) is as follows.
REGC = V
DD
= 4.0 to 5.5 V: f
UCLK
≤
12 MHz
REGC = Capacity, V
DD
= 4.0 to 5.5 V: f
UCLK
≤
6 MHz
REGC = V
DD
= 2.7 to 4.0 V: f
UCLK
≤
6 MHz
Remark
f
XX
:
Main clock frequency
f
UCLK
:
Base clock frequency
k:
Set values of BRGCn.MDLn7 to BRGCn.MDLn0 bits
ERR:
Baud rate error [%]
n = 0, 1