UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 338

• Manufacturer Part Number: UPD78F0537DGA(T)-9EV-A
• Description: 8BIT MCU, 128K FLASH, 7KB RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F0537DGA(T)-9EV-A

• Controller Family/series: UPD78
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

14.3 Registers Controlling Serial Interface UART0
(1) Asynchronous serial interface operation mode register 0 (ASIM0)
338
Address: FF70H After reset: 01H R/W
Serial interface UART0 is controlled by the following five registers.
• 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)
Notes 1.
Symbol
ASIM0
This 8-bit register controls the serial communication operations of serial interface UART0.
This register can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to 01H.
Figure 14-2. Format of Asynchronous Serial Interface Operation Mode Register 0 (ASIM0) (1/2)
2.
The input from the R
Asynchronous serial interface reception error status register 0 (ASIS0), transmit shift register 0 (TXS0),
and receive buffer register 0 (RXB0) are reset.
POWER0
POWER0
RXE0
TXE0
0
<7>
Note 1
1
0
1
0
1
Disables operation of the internal operation clock (fixes the clock to low level) and asynchronously
resets the internal circuit
Enables operation of the internal operation clock.
Disables transmission (synchronously resets the transmission circuit).
Enables transmission.
Disables reception (synchronously resets the reception circuit).
Enables reception.
TXE0
<6>
X
D0 pin is fixed to high level when POWER0 = 0.
CHAPTER 14 SERIAL INTERFACE UART0
RXE0
<5>
User’s Manual U17260EJ6V0UD
Enables/disables operation of internal operation clock
Note 2
.
PS01
4
Enables/disables transmission
Enables/disables reception
PS00
3
CL0
2
SL0
1
0
1