upd78f0103hmca1-5a4-a Renesas Electronics Corporation., upd78f0103hmca1-5a4-a Datasheet - Page 204
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upd78f0103hmca1-5a4-a
Manufacturer Part Number
upd78f0103hmca1-5a4-a
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0103HMCA1-5A4-A.pdf
(438 pages)
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(1) Receive buffer register 0 (RXB0)
(2) Receive shift register 0 (RXS0)
(3) Transmit shift register 0 (TXS0)
204
This 8-bit register stores parallel data converted by receive shift register 0 (RXS0).
Each time 1 byte of data has been received, new receive data is transferred to this register from receive shift
register 0 (RXS0).
If the data length is set to 7 bits the receive data is transferred to bits 0 to 6 of RXB0 and the MSB of RXB0 is
always 0.
If an overrun error (OVE0) occurs, the receive data is not transferred to RXB0.
RXB0 can be read by an 8-bit memory manipulation instruction. No data can be written to this register.
RESET input or POWER0 = 0 sets this register to FFH.
This register converts the serial data input to the R
RXS0 cannot be directly manipulated by a program.
This register is used to set transmit data. Transmission is started when data is written to TXS0, and serial data is
transmitted from the T
TXS0 can be written by an 8-bit memory manipulation instruction. This register cannot be read.
RESET input, POWER0 = 0, or TXE0 = 0 sets this register to FFH.
Caution Do not write the next transmit data to TXS0 before the transmission completion interrupt signal
(INTST0) is generated.
CHAPTER 11 SERIAL INTERFACE UART0 (
X
D0 pin.
User’s Manual U16846EJ3V0UD
X
D0 pin into parallel data.
PD78F0102H AND 78F0103H ONLY)
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