YR0K42378FC000BA Renesas Electronics America, YR0K42378FC000BA Datasheet - Page 762
YR0K42378FC000BA
Manufacturer Part Number
YR0K42378FC000BA
Description
KIT EVAL FOR H8S/2378
Manufacturer
Renesas Electronics America
Series
H8®r
Type
MCUr
Datasheet
1.YR0K42378FC000BA.pdf
(1208 pages)
Specifications of YR0K42378FC000BA
Contents
Board
For Use With/related Products
H8S/2378
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
- Current page: 762 of 1208
- Download datasheet (8Mb)
Section 15 Serial Communication Interface (SCI, IrDA)
• Transmit shift register_3 (TSR_3)
• Receive data register_3 (RDR_3)
• Transmit data register_3 (TDR_3)
• Serial mode register_3 (SMR_3)
• Serial control register_3 (SCR_3)
• Serial status register_3 (SSR_3)
• Smart card mode register_3 (SCMR_3)
• Bit rate register_3 (BRR_3)
• Receive shift register_4 (RSR_4)
• Transmit shift register_4 (TSR_4)
• Receive data register_4 (RDR_4)
• Transmit data register_4 (TDR_4)
• Serial mode register_4 (SMR_4)
• Serial control register_4 (SCR_4)
• Serial status register_4 (SSR_4)
• Smart card mode register_4 (SCMR_4)
• Bit rate register_4 (BRR_4)
15.3.1
RSR is a shift register used to receive serial data that is input to the RxD pin and convert it into
parallel data. When one byte of data has been received, it is transferred to RDR automatically.
RSR cannot be directly accessed by the CPU.
15.3.2
RDR is an 8-bit register that stores receive data. When the SCI has received one byte of serial
data, it transfers the received serial data from RSR to RDR where it is stored. After this, RSR is
receive-enabled. Since RSR and RDR function as a double buffer in this way, enables continuous
receive operations to be performed. After confirming that the RDRF bit in SSR is set to 1, read
RDR for only once. RDR cannot be written to by the CPU.
15.3.3
TDR is an 8-bit register that stores transmit data. When the SCI detects that TSR is empty, it
transfers the transmit data written in TDR to TSR and starts transmission. The double-buffered
structures of TDR and TSR enable continuous serial transmission. If the next transmit data has
Rev.7.00 Mar. 18, 2009 page 694 of 1136
REJ09B0109-0700
Receive Shift Register (RSR)
Receive Data Register (RDR)
Transmit Data Register (TDR)
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