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HD6473837H Datasheet, PDF (243/562 Pages) Renesas Technology Corp – Hardware Manual | |||
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Features
⢠Choice of 8-bit or 16-bit data length
⢠Choice of eight internal clock sources (Ï/1024, Ï/256, Ï/64, Ï/32, Ï/16, Ï/8, Ï/4, Ï/2) or an
external clock
⢠Interrupt requested at completion of transfer
Block Diagram
Figure 10.1 shows a block diagram of SCI1.
Ï
PSS
SCK1
SI1
Transmit/receive
control circuit
SCR1
SCSR1
Transfer bit counter
SDRU
SDRL
SO1
Notation:
SCR1: Serial control register 1
SCSR1: Serial control/status register 1
SDRU: Serial data register U
SDRL: Serial data register L
IRRS1: SCI1 interrupt request flag
PSS: Prescaler S
Figure 10.1 SCI1 Block Diagram
226
IRRS1
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