MC68HC705MC4MP datasheet(130/180 Pages) FREESCALE

130 / 180 page

Serial Communications Interface

MC68HC705MC4 — Rev. 2.0

Serial Communications Interface

WAKE — Wakeup Bit

This read/write bit determines which condition wakes up the SCI: a

logic 1 (address mark) in the most significant bit position of a received

character or an idle condition of the PD5/RDI pin. Reset has no effect

on the WAKE bit.

1 = Address mark wakeup

0 = Idle line wakeup

11.6.3 SCI Control Register 2

SCI control register 2 has the following functions:

•

Enables the SCI receiver and SCI receiver interrupts

•

Enables the SCI transmitter and SCI transmitter interrupts

•

Enables SCI receiver idle interrupts

•

Enables SCI transmission complete interrupts

•

Enables SCI wakeup

•

Transmits SCI break characters

TIE — Transmit Interrupt Enable

This read/write bit enables SCI interrupt requests when the TDRE bit

becomes set. Reset clears the TIE bit.

1 = TDRE interrupt requests enabled

0 = TDRE interrupt requests disabled

Address:

$000C

Bit 7

654321

Bit 0

Read:

TIE

TCIE

RIE

ILIE

RWU

SBK

Write:

Reset:

00000000

Figure 11-6. SCI Control Register 2 (SCCR2)

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

MC68HC705MC4MP 数据表(PDF) 130 Page - Freescale Semiconductor, Inc

MC68HC705MC4MP 数据表(HTML) 130 Page - Freescale Semiconductor, Inc

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

数据表下载