XC68HC11L0MFS1 View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

XC68HC11L0MFS1

ROM-based high-performance microcontrollers

Freescale Semiconductor 

Freescale Semiconductor, Inc.

TRANSMITTER

BAUD RATE

CLOCK

SCDR Tx BUFFER

(WRITE ONLY)

10 (11) - BIT Tx SHIFT REGISTER

H (8) 7 6 5 4 3 2 1 0 L

DDD1

PIN BUFFER

PD1

AND CONTROL

TxD

8

SCCR1 SCI CONTROL 1

TRANSMITTER

CONTROL LOGIC

FORCE PIN

DIRECTION (OUT)

8

SCSRINTERRUPT STATUS

8

TDRE

TIE

TC

TCIE

SCCR2 SCI CONTROL 2

SCI Rx

REQUESTS

SCI INTERRUPT

REQUEST

INTERNAL

DATA BUS

Figure 7-1 SCI Transmitter Block Diagram

11 SCI TX BLOCK

7.3 Receive Operation

During receive operations, the transmit sequence is reversed. The serial shift register

receives data and transfers it to a parallel receive data register (SCDR) as a complete

word. Refer to Figure 7-2. This double buffered operation allows a character to be

shifted in serially while another character is already in the SCDR. An advanced data

SERIAL COMMUNICATIONS INTERFACE

7-2

TECHNICAL DATA

For More Information On This Product,

Go to: www.freescale.com

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