參數(shù)資料
型號: MC68HC912BL16FU8
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64
封裝: QFP-64
文件頁數(shù): 116/128頁
文件大小: 3326K
代理商: MC68HC912BL16FU8
MC68HC912BL16
88
MC68HC912BL16TS/D
Figure 22 Serial Communications Interface Block Diagram
13.2.1 Data Format
The serial data format requires the following conditions:
An idle-line in the high state before transmission or reception of a message.
A start bit (logic zero), transmitted or received, that indicates the start of each character.
Data that is transmitted or received least significant bit (LSB) first.
A stop bit (logic one), used to indicate the end of a frame. (A frame consists of a start bit, a char-
acter of eight or nine data bits and a stop bit.)
A BREAK is defined as the transmission or reception of a logic zero for one frame or more.
This SCI supports hardware parity for transmit and receive.
Rx Baud Rate
Tx Baud Rate
MCLK
DIVIDER
10-11 BIT SHIFT REG
MSB
TxD BUFFER/SC0DRL
TxMTR CONTROL
SC0CR2/SCI CTL 2
SC0CR1/SCI CTL 1
SC0SR1/INTSTATUS
DATARECOVERY
10-11 BIT SHIFT REG
RxD BUFFER/SC0DRL
SC0BD/SELECT
LSB
RxD
TxD
WAKE-UP LOGIC
SC0CR1/SCI CTL 1
SC0SR1/INTSTATUS
SC0CR2/SCI CTL 2
INT REQUEST LOGIC
MSB
LSB
INT REQUEST LOGIC
SCI RECEIVER
SCI
TRANSMITTER
DATABUS
PARITY
DETECT
PARITY
GENERATOR
HC12B32 SCI BLOCK
TO
INTERNAL
LOGIC
BAUDRATE
CLOCK
PS0
PS1
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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