7641 datasheet(205/385 Pages) RENESAS

205 / 385 page

Rev.2.00

Aug 28, 2006

page 74 of 148

7641 Group

REJ09B0336-0200

APPLICATION

2.4 UART

Fig. 2.4.21 Registers setting related to UART address mode

U1MOD

U1BRG

1916

1 0 0

U1CON

P3D

ICONA

UART1 mode register (Address : 3016)

UART clock :

UART clock prescaling :

φ/1

Character length : 8 bits

Parity checking disabled

Stop bit length : 1 stop bit

UART1 control register (Address : 3316)

Transmit disabled

Receive enabled

UART address mode enabled

Receive initializing

CTS function disabled

RTS function disabled

Port P3 direction register (Address : 0F16)

Input mode

UART1 receive buffer full interrupt enabled

Interrupt control register A (Address : 0516)

UART1 baud rate generator (Address : 3116)

U1STS

U1TRB1

Receiving data read

UART1 status register (Address : 3216)

UART1 transmit/receive buffer register 1 (Address : 3416)

Receive buffer full flag

Parity error flag

Framing error flag

Overrun error flag

Summing error flag

ICONB

Interrupt control register B (Address : 0616)

UART1 summing error interrupt disabled

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