UPD78F0138 NEC, UPD78F0138 Datasheet - Page 290
UPD78F0138
Manufacturer Part Number
UPD78F0138
Description
(UPD78xxxx) 8-Bit Single-Chip Microcontrollers
Manufacturer
NEC
Datasheet
1.UPD78F0138.pdf
(558 pages)
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(3) Example of setting baud rate
290
Baud Rate
115200
153600
230400
10400
19200
31250
38400
76800
Remark TPS01, TPS00: Bits 7 and 6 of baud rate generator control register 0 (BRGC0) (setting of base clock
[bps]
2400
4800
9600
TPS01,
TPS00
k:
f
ERR:
X
−
−
3
3
3
2
2
2
1
1
1
:
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 13-4. Set Data of Baud Rate Generator
))
CHAPTER 13 SERIAL INTERFACE UART0
ERR[%]
−1.36
−1.36
1.73
0.16
1.73
1.73
1.73
1.73
−
−
0
User’s Manual U16228EJ2V0UD
TPS01,
TPS00
−
3
3
3
2
2
2
1
1
1
1
27
14
13
27
17
14
27
18
14
f
−
9
k
X
= 8.38 MHz
Calculated
116389
149643
232778
10072
19398
30809
38796
77593
Value
4850
9353
−
ERR[%]
−2.58
−3.15
−1.41
−2.58
−2.58
1.03
1.03
1.03
1.03
1.03
−
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[%]
−2.58
−2.58
−2.58
1.03
1.03
0.72
1.03
1.03
−
−
−
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