7643 datasheet(379/424 Pages) RENESAS

379 / 424 page

7643 Group

REJ09B0133-0200

APPENDIX

3.5 Control registers

Rev.2.00

Aug 28, 2006

page 56 of 98

UART mode register

b7 b6 b5 b4 b3 b2 b1 b0

UART mode register

(UMOD : address 3016)

Name

Functions

At reset R W

UART clock prescaling

select bits (PS)

Parity select bit (PMD)

Parity enable bit (PEN)

Stop bit length select bit

(STB)

b2b1

0 0 :

φ/1

0 1 :

φ/8

1 0 :

φ/32

1 1 :

φ/256

0 : 1 stop bit

1 : 2 stop bits

0 : Even parity

1 : Odd parity

0 : Parity checking disabled

1 : Parity checking enabled

UART character length

select bit (LE1, 0)

b7b6

0 0 : 7 bits

0 1 : 8 bits

1 0 : 9 bits

1 1 : Not available

Nothing is arranged for this bit.

Fix this bit to “0”.

UART baud rate generator

b7 b6 b5 b4 b3 b2 b1 b0

UART baud rate generator

(UBRG: address 3116)

Undefined

Functions

At reset R W

Undefined

qThe UBRG determines the baud rate for transfer.

qThis is a 8-bit counter with its reload register. This generator divides

the frequency of the count source by 1/(n + 1), where “n” is the

value written to the UBRG.

Fig. 3.5.23 Structure of Timer UART mode register

Fig. 3.5.24 Structure of UART baud rate generator

7643 Datasheet(PDF) 379 Page - Renesas Technology Corp

7643 Datasheet(HTML) 379 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL