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7480 Datasheet(PDF) 151 Page - Renesas Technology Corp

Part # 7480
Description  8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES
PDF  337 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7480 Datasheet(HTML) 151 Page - Renesas Technology Corp

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7480 Group and 7481 Group User's Manual
1-134
HARDWARE
(4)
Setting of UART
Figures 1.14.21 and 1.14.22 show the setting of UART.
Figure 1.14.21 Setting of UART (1)
1.14 Serial I/O
Serial I/O receive interrupt disabled
Serial I/O transmit interrupt disabled
Procedure 2 Disabling serial I/O transmit/receive interrupt
Interrupt control register 1 (ICON1) [Address 00FE16]
b7
b0
00
Baud rate value is set
Procedure 3 Setting baud rate generator when BRG output/16 is selected as synchronous clock
Baud rate generator (BRG) [Address 00E416]
Transmission operation stop and initialized
Receive operation stop and initialized
Procedure 1 Stop of serial I/O operation and initialization
Serial I/O control register (SIOCON) [Address 00E216]
b7
b0
00
Procedure 4 Setting serial I/O control register
Serial I/O control register (SIOCON) [Address 00E216]
b7
b0
1 0
X
BRG count source selection
(valid only when BRG output/16 is selected as synchronous clock)
0: f(XIN)/4
1: f(XIN)/16
Notes 1: When BRG output/16 is selected as the synchronous clock,
P16/SCLK pin can be used as port pin P16 because the synchronous clock
is not output externally from SCLK pin.
Serial I/O synchronous clock selection
0: BRG output/16 (Note 1)
1: External clock input/16
This bit is invalid when UART is selected.
Transmit interrupt source selection (valid only when transmitting)
0: when transmit buffer is empty
1: when transmit shift operation is completed
Transmit enable selection
0: transmit disabled
1: transmit enabled
Receive enable selection
0: receive disabled
1: receive enabled
Clock asynchronous serial I/O (UART) selected
Serial I/O enabled (P14–P16 are operated as serial I/O pin)



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