M32CSLASH86 datasheet(209/505 Pages) RENESAS

209 / 505 page

Page 186

17. Serial I/O

)

(

Function

UARTi Bit Rate Register (i=0 to 4)(1, 2)

Setting Range

Symbol

Address

After Reset

U0BRG to U4BRG 036916, 02E916, 033916, 032916, 02F916

Indeterminate

If the setting value is m, the UiBRG register

divides a count source by m+1

0016 to FF16

NOTES:

1. Use the MOV instruction to set the UiBRG register.

2. Set the UiBRG register while no data transfer occurs.

UARTi Transmit/Receive Mode Register (i=0 to 4)

Symbol

Address

After Reset

U0MR to U4MR

036816, 02E816, 033816, 032816, 02F816

0016

CKDIR

STPS

PRY

IOPOL

PRYE

SMD0

SMD2

SMD1

Serial I/O Mode Select

Bit

Internal/External Clock

Select Bit

Stop Bit Length Select

Bit

Odd/Even Parity Select

Bit

Parity Enable Bit

TxD,RxD Input/Output

Polarity Switch Bit

0 0 0: Serial I/O disabled

0 0 1: Clock synchronous serial I/O mode

0 1 0: I2C mode

1 0 0: UART mode, 7-bit transfer data

1 0 1: UART mode, 8-bit transfer data

1 1 0: UART mode, 9-bit transfer data

b2 b1 b0

0: Not inversed

1: Inverse

0 : 1 stop bit

1 : 2 stop bits

Enables when PRYE = 1

0 : Odd parity

1 : Even parity

0 : Disables a parity

1 : Enables a parity

0 : Internal clock

1 : External clock

Bit Name

Bit

Symbol

Do not set value other than the above

Function

Figure 17.3 U0BRG to U4BRG Registers and U0MR to U4MR Registers

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