HD64336900G Datasheet, PDF (216/408 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

SCK3
External
clock
Clock
Baud rate
generator
BRC
Transmit/receive
control circuit
Internal clock ( /64, /16, /4, )
BRR
SMR
SCR3
SSR
SPMR
TXD
RXD
Noise
filter circuit
TSR
RSR
TDR
RDR
[Legend]
RSR: Receive shift register
RDR: Receive data register
TSR: Transmit shift register
TDR: Transmit data register
SMR: Serial mode register
SCR3: Serial control register 3
SSR: Serial status register
BRR: Bit rate register
BRC: Bit rate counter
SPMR: Sampling mode register
Figure 14.1 Block Diagram of SCI3
Interrupt request
(TEI, TXI, RXI, ERI)
Rev. 1.00, 11/03, page 188 of 376