HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 288

• Manufacturer Part Number: HD6433640
• Description: H8/3644 Series Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

Figure 10.1 shows a block diagram of SCI1.
282
ø
SCK
SI
SO
Legend:
SCR1:
SCSR1:
SDRU:
SDRL:
IRRS1:
PSS:
1
1
1
PSS
Serial control register 1
Serial control/status register 1
Serial data register U
Serial data register L
SCI1 interrupt request flag
Prescaler S
Figure 10.1 SCI1 Block Diagram
Transmit/receive
control circuit
Transfer bit counter
SCSR1
SDRU
SCR1
SDRL
IRRS1