UPD78F0411GA-GAM-AX Datasheet, PDF (353/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 14 SERIAL INTERFACE UART6
Caution
When using the P113/SEG7/RxD6 pin as the P113 or RxD6 pin, set PF11ALL to 0 and ISC3 to 1,
after release of reset.
When using the P113/SEG7/RxD6 pin as the SEG7 pin, set PF11ALL to 1 and ISC3 to 0, after
release of reset.
(8) Port function register 1 (PF1)
This register sets the pin functions of P13/TxD0/KR4/TxD6 pin.
PF1 is set using a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets PF1 to 00H.
Figure 14-12. Format of Port Function Register 1 (PF1)
Address: FF20H After reset: 00H R/W
Symbol
7
6
5
4
3
2
1
0
PF1
0
0
0
0
PF13
0
0
0
PF13
0
1
Port (P13), key interrupt (KR4), UART0, UART6 output specification
Used as P13 or KR4
Used as TxD0 or TxD6
(9) Port mode register 1 (PM1)
This register sets port 1 input/output in 1-bit units.
When using the P13/TxD0/KR4/TxD6 pin for serial interface data output, clear PM13 to 0. The output latch of
P13 at this time may be 0 or 1.
When using the P12/RxD0/KR3/RXD6 pin for serial interface data input, set PM12 to 1. The output latch of P12 at
this time may be 0 or 1.
PM1 can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to FFH.
Figure 14-13. Format of Port Mode Register 1 (PM1)
Address: FF21H After reset: FFH R/W
Symbol
7
6
5
4
3
2
1
0
PM1
1
1
1
1
PM13
PM12
1
1
PM1n
0
1
P1n pin I/O mode selection (n = 2, 3)
Output mode (output buffer on)
Input mode (output buffer off)
User’s Manual U18698EJ1V0UD
351