upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 228

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

228
Note If “reception as 0 parity” is selected, the parity is not judged. Therefore, bit 2 (PE6) of asynchronous serial
Cautions 1. To start the transmission, set POWER6 to 1 and then set TXE6 to 1. To stop the transmission,
Figure 10-2. Format of Asynchronous Serial Interface Operation Mode Register 6 (ASIM6) (2/2)
interface reception error status register 6 (ASIS6) is not set and the error interrupt does not occur.
2. To start the reception, set POWER6 to 1 and then set RXE6 to 1. To stop the reception, clear
3. Set POWER6 to 1 and then set RXE6 to 1 while a high level is input to the R
4. TXE6 and RXE6 are synchronized by the base clock (f
5. Set transmit data to TXB6 at least one base clock (f
6. Clear the TXE6 and RXE6 bits to 0 before rewriting the PS61, PS60, and CL6 bits.
7. Clear TXE6 to 0 before rewriting the SL6 bit.
8. Make sure that RXE6 = 0 when rewriting the ISRM6 bit.
ISRM6
PS61
CL6
clear TXE6 to 0, and then clear POWER6 to 0.
RXE6 to 0, and then clear POWER6 to 0.
POWER6 is set to 1 and RXE6 is set to 1 while a low level is input, reception is started.
transmission or reception again, set TXE6 or RXE6 to 1 at least two clocks of the base clock
after TXE6 or RXE6 has been cleared to 0. If TXE6 or RXE6 is set within two clocks of the
base clock, the transmission circuit or reception circuit may not be initialized.
number of stop bits = 1”, and therefore, is not affected by the set value of the SL6 bit.
SL6
0
0
1
1
0
1
0
1
0
1
Character length of data = 7 bits
Character length of data = 8 bits
Number of stop bits = 1
Number of stop bits = 2
“INTSRE6” occurs in case of error (at this time, INTSR6 does not occur).
“INTSR6” occurs in case of error (at this time, INTSRE6 does not occur).
PS60
0
1
0
1
Enables/disables occurrence of reception completion interrupt in case of error
CHAPTER 10 SERIAL INTERFACE UART6
Does not output parity bit.
Outputs 0 parity.
Outputs odd parity.
Outputs even parity.
Preliminary User’s Manual U19014EJ1V0UD
Transmission operation
Specifies character length of transmit/receive data
Specifies number of stop bits of transmit data
Reception is always performed with “the
XCLK6
) after setting TXE6 = 1.
Reception without parity
Reception as 0 parity
Judges as odd parity.
Judges as even parity.
XCLK6
) set by CKSR6.
Reception operation
Note
X
D6 pin. If
To enable