HD6433935 Hitachi, HD6433935 Datasheet - Page 268

• Manufacturer Part Number: HD6433935
• Description: 8-Bit MICROCONTROLLER
• Manufacturer: Hitachi

2. Block diagram
Figure 10-3 shows a block diagram of SCI3.
256
TXD
RXD
Notation:
RSR:
RDR:
TSR:
TDR:
SMR:
SCR3:
SSR:
BRR:
BRC:
SPCR:
Clock
SCK
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
3x
SPCR
External
clock
Baud rate generator
Transmit/receive
control circuit
Figure 10-3 SCI3 Block Diagram
RSR
TSR
BRC
Internal clock (ø/64, ø/16, øw/2, ø)
SCR3
SMR
BRR
RDR
SSR
TDR
Interrupt request
(TEI, TXI, RXI, ERI)