M16C26A Datasheet, PDF(187/352 Page) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

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M16C26A Datasheet, PDF (187/352 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

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M16C/26A Group (M16C/26A, M16C/26B, M16C/26T)

13. Serial I/O

Table 13.1.4.2. Registers to Be Used and Settings in Special Mode 2

Register

U2TB(1)

U2RB(1)

Bit

0 to 7

0 to 7

Function

Set transmission data

Reception data can be read

OER

Overrun error flag

U2BRG 0 to 7

U2MR(1) SMD2 to SMD0

Set a transfer rate

Set to â0012â

CKDIR

Set this bit to â0â for master mode or â1â for slave mode

IOPOL

Set to â0â

U2C0

CLK1, CLK0

Select the count source for the U2BRG register

CRS

Invalid because CRD = 1

TXEPT

Transmit register empty flag

CRD

Set to â1â

NCH

Select TxD2 pin output format

CKPOL

Clock phases can be set in combination with the CKPH bit in the U2SMR3

register

UFORM

Set to â0â

U2C1

TE

Set this bit to â1â to enable transmission

TI

Transmit buffer empty flag

RE

Set this bit to â1â to enable reception

RI

Reception complete flag

U2IRS

Select UART2 transmit interrupt cause

U2RRM,

Set to â0â

U2LCH, U2ERE

U2SMR 0 to 7

Set to â0â

U2SMR2 0 to 7

Set to â0â

U2SMR3 CKPH

Clock phases can be set in combination with the CKPOL bit in the U2C0 register

NODC

Set to â0â

0, 2, 4 to 7

Set to â0â

U2SMR4 0 to 7

Set to â0â

NOTE:

1. Not all bits in the register are described above. Set those bits to â0â when writing to the registers in

Special Mode 2.

Rev. 2.00 Feb.15, 2007 page 170 of 329

REJ09B0202-0200

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