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M38K09RFS Datasheet(PDF) 178 Page - Renesas Technology Corp

Part # M38K09RFS
Description  RENESAS 8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES
PDF  328 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M38K09RFS Datasheet(HTML) 178 Page - Renesas Technology Corp

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2.4 Serial I/O
Rev.2.00
Oct 05, 2006
page 49 of 111
38K0 Group
REJ09B0337-0200
APPLICATION
Fig. 2.4.15 Registers setting related to transmitting side
Serial I/O status register (Address : 2716)
SIOSTS
Transmit buffer empty flag
• Confirm that the data has been transferred from Transmit buffer
register to Transmit shift register.
• When this flag is “1”, it is possible to write the next transmission
data in to Transmit buffer register.
Transmitting side
Transmit shift register shift completion flag
Confirm completion of transmitting 1-byte data with this flag.
“1” : Transmit shift completed
b7
b0
Interrupt edge selection register (Address : 0FF316)
INTEDGE
INT1 interrupt edge selection bit : Falling edge active
b7
b0
Baud rate generator (Address : 0FE216)
BRG
Set “division ratio – 1”.
11
b7
b0
Serial I/O control register (Address : 0FE016)
SIOCON
BRG counter source selection bit : f(XIN)
Serial I/O synchronous clock selection bit : BRG/4
Transmit enable bit : Transmit enabled
Receive enable bit : Receive disabled
Serial I/O mode selection bit : Clock synchronous serial I/O
Serial I/O enable bit : Serial I/O enabled
b7
b0
0
0
0
11
1
0



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