MC-78F0712-KIT Renesas Electronics America, MC-78F0712-KIT Datasheet - Page 230

• Manufacturer Part Number: MC-78F0712-KIT
• Description: KIT REF SYSTEM 78K0 UPD78F0712
• Manufacturer: Renesas Electronics America

Specifications of MC-78F0712-KIT

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

<R>
(1) Receive buffer register 00 (RXB00)
(2) Receive shift register 00 (RXS00)
(3) Transmit shift register 00 (TXS00)
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This 8-bit register stores parallel data converted by receive shift register 00 (RXS00).
Each time 1 byte of data has been received, new receive data is transferred to this register from receive shift
register 00 (RXS00).
If the data length is set to 7 bits the receive data is transferred to bits 0 to 6 of RXB00 and the MSB of RXB00 is
always 0.
If an overrun error (OVE00) occurs, the receive data is not transferred to RXB00.
RXB00 can be read by an 8-bit memory manipulation instruction. No data can be written to this register.
RESET input or POWER00 = 0 sets this register to FFH.
This register converts the serial data input to the RxD00 pin into parallel data.
RXS00 cannot be directly manipulated by a program.
This register is used to set transmit data. Transmission is started when data is written to TXS00, and serial data
is transmitted from the T
TXS00 can be written by an 8-bit memory manipulation instruction. This register cannot be read.
RESET input, POWER00 = 0, or TXE00 = 0 sets this register to FFH.
Cautions 1. Set transmit data to TXS00 at least two base clock (f
2. Do not write the next transmit data to TXS00 before the transmission completion interrupt
signal (INTST00) is generated.
X
D00 pin.
CHAPTER 14 SERIAL INTERFACE UART00
User’s Manual U17890EJ2V0UD
XCLK0
) after setting TXE00 = 1.