hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 375

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

10.1.2
Figure 10.1 shows a block diagram of SCI3.
TXD
RXD
[Legend]
RSR:
RDR:
TSR:
TDR:
SMR:
SCR3:
SSR:
BRR:
BRC:
SPCR:
32
32
Clock
SCK
Block Diagram
Receive shift register
Receive data register
Transmit shift register
Transmit data register
Serial mode register
Serial control register 3
Serial status register
Bit rate register
Bit rate counter
Serial port control register
32
External
SPCR
clock
Baud rate generator
Transmit/receive
control circuit
Figure 10.1 SCI3 Block Diagram
TSR
RSR
BRC
Internal clock (φ/64, φ/16, φ
Section 10 Serial Communication Interface
Rev. 7.00 Mar 10, 2005 page 333 of 652
SCR3
SMR
RDR
BRR
SSR
TDR
W
/2, φ)
Interrupt request
(TEI, TXI, RXI, ERI)
REJ09B0042-0700