NEC V854 UPD703006 User Manual page 289

Table 8-6. Baud Rate Generators 0 to 3 Set-up Values (when typical clocks are used) (1/2)
Baud Rate [bps]
BPR
110 —
150 5
300 4
600 3
1200 2
2400 1
4800 0
9600 0
10400 0
19200 0
31250 0
38400 0
76800 0
153600 0
Baud Rate [bps]
BPR
110
150
300
600
1200
2400
4800
9600
10400
19200
31250
38400
76800
153600
307200
614400
Note Cannot be used because the error is too great.
φ : Internal system clock
Remark
CHAPTER 8 SERIAL INTERFACE FUNCTION
(a) UART
φ = 33 MHz φ = 25 MHz
BRGC Error BPR BRGC
— — 5 222
215 0.07% 5 163
215 0.07% 4 163
215 0.07% 3 163
215 0.07% 2 163
215 0.07% 1 163
215 0.07% 0 163
107 0.39% 0 81
100 0.84% 0 75
54 0.54% 0 41
33 0.00% 0 25
27 0.54% 0 20
13 3.29% 0 10
7 1.30% 0
φ = 19.660 MHz φ = 14.746 MHz
BRGC Error BPR BRGC
5 176 0.83% 5
5 128 0.00% 4
4 128 0.00% 3
3 128 0.00% 2
2 128 0.00% 1
1 128 0.00% 0
0 128 0.00% 0
0 64 0.00% 0
0 60 1.54% 0
0 32 0.00% 0
0 20 1.70% 0
0 16 0.00% 0
0 8 0.00% 0
0 4 0.00% 0
0 2 0.00% —
0 1 0.00% —
User's Manual U11969EJ3V0UM00
φ = 16 MHz
Error BPR BRGC
0.02% 5 142
0.15% 4 208
0.15% 3 208
0.15% 2 208
0.15% 1 208
0.15% 0 208
0.15% 0 104
0.47% 0 52
0.16% 0 48
0.72% 0 26
0.00% 0 16
1.73% 0 13
1.73% 0 6 6.99%
5 1.73% 0 3 8.51%
φ = 12.288 MHz
Error BPR BRGC
131 0.07% 4 218
192 0.00% 4 160
192 0.00% 3 160
192 0.00% 2 160
192 0.00% 1 160
192 0.00% 0 160
96 0.00% 0 80
48 0.00% 0 40
44 0.70% 0 37
24 0.00% 0 20
15 1.69% 0 12
12 0.00% 0 10
6 0.00% 0 5
3 0.00% — —
— — — —
— — — —
φ = 12.5 MHz
Error BPR BRGC Error
0.03% 4 222 0.02%
0.16% 4 163 0.15%
0.16% 3 163 0.15%
0.16% 2 163 0.15%
0.16% 1 163 0.15%
0.16% 0 162 0.47%
0.16% 0 82 0.76%
0.16% 0 40 1.73%
0.16% 0 38 1.16%
0.16% 0 20 1.73%
0.00% 0 13 3.85%
0.16% 0 10 1.73%
Note
0 5 1.73%
Note — — —
φ = 9.830 MHz
Error BPR BRGC Error
0.08% 4 176 0.02%
0.00% 4 128 0.00%
0.00% 3 128 0.00%
0.00% 2 128 0.00%
0.00% 1 128 0.00%
0.00% 0 128 0.00%
0.00% 0 64 0.00%
0.00% 0 32 0.00%
0.21% 0 30 1.54%
0.00% 0 16 0.00%
2.40% 0 10 1.70%
0.00% 0 8 0.00%
0.00% 0 4 0.00%
— 0 2 0.00%
— 0 1 0.00%
— — — —
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