upd78f0103 Renesas Electronics Corporation., upd78f0103 Datasheet - Page 227

• Manufacturer Part Number: upd78f0103
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(3) Example of setting baud rate
Baud Rate
115200
153600
230400
10400
19200
31250
38400
76800
2400
4800
9600
Remark TPS01, TPS00: Bits 7 and 6 of baud rate generator control register 0 (BRGC0) (setting of base clock
[bps]
TPS01,
TPS00
k:
f
ERR:
X
3
3
3
2
2
2
1
1
1
:
CHAPTER 11 SERIAL INTERFACE UART0 ( PD780102, 780103, 78F0103 ONLY)
16
15
20
16
22
16
11
f
8
8
k
X
= 10.0 MHz
Calculated
113636
156250
227273
10417
19531
31250
39063
78125
Value
9766
(f
Value set by the MDL04 to MDL00 bits of BRGC0 (k = 8, 9, 10, ..., 31)
X1 input clock oscillation frequency
Baud rate error
XCLK0
Table 11-4. Set Data of Baud Rate Generator
))
ERR[%]
1.73
0.16
1.73
1.73
1.73
1.73
1.36
1.36
0
User’s Manual U15836EJ5V0UD
TPS01,
TPS00
3
3
3
2
2
2
1
1
1
1
27
14
13
27
17
14
27
18
14
f
k
9
X
= 8.38 MHz
Calculated
116389
149643
232778
10072
19398
30809
38796
77593
Value
4850
9353
ERR[%]
1.03
1.03
1.03
1.03
1.03
2.58
3.15
1.41
2.58
2.58
TPS01,
TPS00
3
3
2
2
2
2
1
1
27
14
27
25
14
27
14
f
9
k
X
= 4.19 MHz
Calculated
116389
10475
18705
38796
74821
Value
2425
4676
9699
ERR[%]
1.03
1.03
0.72
1.03
1.03
2.58
2.58
2.58
227