Figure 14.1 Block Diagram Of Sci3 - Renesas H8 Series Hardware Manual

16-bit single-chip microcomputer
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Section 14 Serial Communication Interface 3 (SCI3)
Clocked synchronous mode
• Data length: 8 bits
• Receive error detection: Overrun errors
SCK3
TXD
RXD
filter circuit
[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
Rev. 3.00 Sep. 14, 2006 Page 198 of 408
REJ09B0105-0300
External
clock
Baud rate
generator
Clock
Transmit/receive
control circuit
TSR
Noise
RSR

Figure 14.1 Block Diagram of SCI3

Internal clock (φ/64,φ/16, φ/4, φ)
BRC
SCR3
SPMR
BRR
SMR
SSR
TDR
RDR
Interrupt request
(TEI, TXI, RXI, ERI)

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