HD6433935 Hitachi, HD6433935 Datasheet - Page 255

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

2. Block Diagram
Figure 10-1 shows a block diagram of SCI1.
ø
SCK1
SI
SO
Notation:
SCR1:
SCSR1: Serial control status register 1
SDRU:
SDRL:
IRRS1:
PSS:
W
/4
1
ø
1
Serial control register 1
Serial data register U
Serial data register L
Serial 1 interrupt request flag
Prescaler S
PSS
Transmit/receive
Figure 10-1 SCI1 Block Diagram
control circuit
Transfer bit counter
SCSR1
SDRU
SCR1
SDRL
IRRS1
243