upd78f0114m6gb-8es Renesas Electronics Corporation., upd78f0114m6gb-8es Datasheet - Page 282
upd78f0114m6gb-8es
Manufacturer Part Number
upd78f0114m6gb-8es
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
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13.4.2 Asynchronous serial interface (UART) mode
performed.
baud rates.
(1) Registers used
282
In this mode, data of 1 byte is transmitted/received following a start bit, and a full-duplex operation can be
A dedicated UART baud rate generator is incorporated, so that communication can be executed at a wide range of
• Asynchronous serial interface operation mode register 6 (ASIM6)
• Asynchronous serial interface reception error status register 6 (ASIS6)
• Asynchronous serial interface transmission status register 6 (ASIF6)
• Clock selection register 6 (CKSR6)
• Baud rate generator control register 6 (BRGC6)
• Asynchronous serial interface control register 6 (ASICL6)
• Input switch control register (ISC)
• Port mode register 1 (PM1)
• Port register 1 (P1)
<1> Set the CKSR6 register (see Figure 13-8).
<2> Set the BRGC6 register (see Figure 13-9).
<3> Set bits 0 to 4 (ISRM6, SL6, CL6, PS60, PS61) of the ASIM6 register (see Figure 13-5).
<4> Set bits 0 and 1 (TXDLV6, DIR6) of the ASICL6 register (see Figure 13-10).
<5> Set bit 7 (POWER6) of the ASIM6 register to 1.
<6> Set bit 6 (TXE6) of the ASIM6 register to 1. → Transmission is enabled.
<7> Write data to transmit buffer register 6 (TXB6). → Data transmission is started.
The basic procedure of setting an operation in the UART mode is as follows.
Caution Take relationship with the other party of communication when setting the port mode register
Set bit 5 (RXE6) of the ASIM6 register to 1. → Reception is enabled.
and port register.
CHAPTER 13 SERIAL INTERFACE UART6
User’s Manual U16227EJ3V0UD
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