HD6413308 Hitachi Semiconductor, HD6413308 Datasheet - Page 218

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HD6413308

Manufacturer Part Number
HD6413308
Description
Hitachi Single-Chip MicroComputer
Manufacturer
Hitachi Semiconductor
Datasheet

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M = {(0.5 – 1/2N) – (D – 0.5)/N – (L – 0.5)F}
When D = 0.5 and F= 0
Basic clock
Receive data
Sync sampling
Data sampling
M: Receive margin
N: Ratio of basic clock to baud rate (N=16)
D: Duty factor of clock—ratio of High pulse width to Low width (0.5 to 1.0)
L: Frame length (9 to 12)
F: Absolute clock frequency deviation
M = (0.5 –1/2
0
1 2
Figure 9-6. Sampling Timing (Asynchronous Mode)
Start bit
16)
3
4
5 6 7 8 9
100 [%] = 46.875%
–7.5 pulses
10
1112
1314 1516
205
1 2 3 4 5 6 7 8 9
+7.5 pulses
D0
100 [%]
10 11
12
131415 16
(1)
(2)
1
2
D1
3 4 5

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