UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 324

• Manufacturer Part Number: UPD78F0413GA-GAM-AX
• Description: 8BIT UC, 32K FLASH, 1KB RAM, LCD
• Manufacturer: NEC

Specifications of UPD78F0413GA-GAM-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 30
• Ram Memory Size: 1024Byte
• Cpu Speed: 10MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 32KB
• Oscillator Type: External, Internal

13.4.2 Asynchronous serial interface (UART) mode
baud rates.
(1) Registers used
324
POWER0 TXE0
In this mode, 1-byte data is transmitted/received following a start bit, and a full-duplex operation can be performed.
A dedicated UART baud rate generator is incorporated, so that communication can be executed at a wide range of
Note Can be set as port function, key interrupt, or serial interface UART6 (only when UART0 is stopped).
Remarks 1.
0
1
<1> Set the BRGC0 register (see Figure 13-4).
<2> Set bits 1 to 4 (SL0, CL0, PS00, and PS01) of the ASIM0 register (see Figure 13-2).
<3> Set bit 7 (POWER0) of the ASIM0 register to 1.
<4> Set bit 6 (TXE0) of the ASIM0 register to 1.
<5> Write data to the TXS0 register.
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
The relationship between the register settings and pins is shown below.
Asynchronous serial interface operation mode register 0 (ASIM0)
Asynchronous serial interface reception error status register 0 (ASIS0)
Baud rate generator control register 0 (BRGC0)
Port mode register 1 (PM1)
Port register 1 (P1)
Set bit 5 (RXE0) of the ASIM0 register to 1.
0
0
1
1
2.
and port register.
POWER0: Bit 7 of asynchronous serial interface operation mode register 0 (ASIM0)
TXE0:
RXE0:
PM1 :
P1 :
The functions within arrowheads (< >) can be assigned by setting the input switch control register
(ISC).
:
RXE0
0
1
0
1
Table 13-2. Relationship Between Register Settings and Pins
PM13
Note
Note
0
0
don’t care
Bit 6 of ASIM0
Bit 5 of ASIM0
Port mode register
Port output latch
P13
CHAPTER 13 SERIAL INTERFACE UART0
Note
Note
PM12
Data transmission is started.
User’s Manual U18698EJ1V0UD
Note
Note
1
1
P12
Note
Note
Transmission is enabled.
Reception is enabled.
Transmission/
Transmission
Reception
Operation
reception
UART0
Stop
TxD0/KR4/P13/<TxD6> RxD0/KR3/P12/<RxD6>
KR4/P13/<TxD6>
KR4/P13
TxD0
TxD0
Pin Function
KR3/P12/<RxD6>
KR3/P12
RxD0
RxD0