M16CSLASH26 datasheet(137/239 Pages) RENESAS

137 / 239 page

Renesas Technology Corp.

Clock Asynchronous Serial I/O (UART) Mode

131

M16C/26 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Under

development

Preliminary Specifications Rev. 0.9

Specifications in this manual are tentative and subject to change.

Figure 1.15.18. UARTi transmit/receive mode register in UART mode

Symbol

Address

When reset

UiMR(i=0,1)

03A016, 03A816

0016

CKDIR

UARTi transmit / receive mode registers

Internal / external clock

select bit

STPS

PRY

PRYE

0 : Internal clock

1 : External clock (Note)

Bit name

Function

Bit symbol

SMD0

SMD1

SMD2

Serial I/O mode select bit

b2 b1 b0

0 : One stop bit

1 : Two stop bits

0 : Parity disabled

1 : Parity enabled

1 0 0 : Transfer data 7 bits long

1 0 1 : Transfer data 8 bits long

1 1 0 : Transfer data 9 bits long

Valid when bit 6 = “1”

0 : Odd parity

1 : Even parity

Stop bit length select bit

Odd / even parity

select bit

Parity enable bit

Symbol

Address

When reset

U2MR

037816

0016

CKDIR

UART2 transmit / receive mode register

Internal / external clock

select bit

STPS

PRY

PRYE

IOPOL

Must always be fixed to “0”

Bit name

Function

Bit symbol

SMD0

SMD1

SMD2

Serial I/O mode select bit

b2 b1 b0

0 : One stop bit

1 : Two stop bits

0 : Parity disabled

1 : Parity enabled

0 : No reverse

1 : Reverse

1 0 0 : Transfer data 7 bits long

1 0 1 : Transfer data 8 bits long

1 1 0 : Transfer data 9 bits long

Valid when bit 6 = “1”

0 : Odd parity

1 : Even parity

Stop bit length select bit

Odd / even parity

select bit

Parity enable bit

TxD, RxD I/O polarity

reverse bit (Note)

Note: Usually set to “0”.

Note: Set the corresponding port direction register to "0".

Reserved

Must always be "0".

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