upd78f0103hmca1-5a4-a Renesas Electronics Corporation., upd78f0103hmca1-5a4-a Datasheet - Page 259
upd78f0103hmca1-5a4-a
Manufacturer Part Number
upd78f0103hmca1-5a4-a
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0103HMCA1-5A4-A.pdf
(438 pages)
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Therefore, the maximum receivable baud rate at the transmission destination is as follows.
Similarly, the maximum permissible data frame length can be calculated as follows.
Therefore, the minimum receivable baud rate at the transmission destination is as follows.
The permissible baud rate error between UART6 and the transmission destination can be calculated from the
above minimum and maximum baud rate expressions, as follows.
Remarks 1. The permissible error of reception depends on the number of bits in one frame, input clock
10
11
8
20
50
100
255
× FLmax = 11 × FL −
Division Ratio (k)
FLmax =
BRmax = (FLmin/11)
BRmin = (FLmax/11)
2. k: Set value of BRGC6
frequency, and division ratio (k). The higher the input clock frequency and the higher the division
ratio (k), the higher the permissible error.
21k − 2
20k
Table 12-5. Maximum/Minimum Permissible Baud Rate Error
FL × 11
k + 2
2 × k
Maximum Permissible Baud Rate Error
−
−
× FL =
1
1
CHAPTER 12 SERIAL INTERFACE UART6
=
=
21k + 2
21k − 2
22k
20k
21k − 2
+3.53%
+4.26%
+4.56%
+4.66%
+4.72%
2 × k
User’s Manual U16846EJ3V0UD
Brate
Brate
FL
Minimum Permissible Baud Rate Error
−3.61%
−4.31%
−4.58%
−4.67%
−4.73%
259
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