UPD78F0138 NEC, UPD78F0138 Datasheet - Page 322
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UPD78F0138
Manufacturer Part Number
UPD78F0138
Description
(UPD78xxxx) 8-Bit Single-Chip Microcontrollers
Manufacturer
NEC
Datasheet
1.UPD78F0138.pdf
(558 pages)
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322
Remark T
INTST6
T
X
D6
If the number of bits set by BRGC6 runs short, adjust the number of bits by setting the base clock of
UART6.
INTST6: Transmission completion interrupt request
Set TXE6 bit of ASIM6 register to 1 to
enable transmission.
Read BRGC6 register and save current
set value of BRGC6 register to general-
purpose register.
Set value to BRGC6 register to realize
desired SBF length.
Set character length of data to 8 bits
and parity to 0 or even using ASIM6
register.
X
Clear TXE6 and RXE6 bits of ASIM6
register to 0 (to disable transmission/
reception).
Set TXB6 register to "00H" and start
transmission.
D6:
Figure 14-22. Example of Setting Procedure of SBF Transmission (Flowchart)
T
X
INTST6 occurred?
D6 pin (output)
1
Start
2
Yes
3
CHAPTER 14 SERIAL INTERFACE UART6
Figure 14-23. SBF Transmission
4
User’s Manual U16228EJ2V0UD
No
5
6
7
8
Clear TXE6 and RXE6 bits of ASIM6
register to 0.
Set TXE6 bit of ASIM6 register to 1 to
enable transmission.
Rewrite saved BRGC6 value to BRGC6
register.
Re-set PS61 bit, PS60 bit, and CL6 bit
of ASIM6 register to desired value.
9
10
11
End
12
13
Stop
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