参数资料
型号: MC68HC705PD6
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP80
封装: QFP-80
文件页数: 7/165页
文件大小: 841K
代理商: MC68HC705PD6
GENERAL RELEASE SPECIFICATION
July 7, 1997
MOTOROLA
SERIAL COMMUNICATIONS INTERFACE
MC68HC05PD6
11-2
REV 1.1
Any SCI two-wire system requires receive data in (RDI) and transmit data out
(TDO).
Figure 11-1. Serial Communications Interface Block Diagram
SCI interrupt
INTERNAL BUS
TRANSMIT
DATA
REGISTER
TRANSMIT
DATA SHIFT
REGISTER
RECEIVE
DATA SHIFT
REGISTER
RECEIVE
DATA
REGISTER
TIE
TCIE
RIE
ILIE
TE
RE
RWU
SBK
FE
NF
OR
IDLE
RDRF
TC
TDRE
TRANSMIT
CONTROL
FLAG
CONTROL
RECEIVE
CONTROL
WAKE UP
UNIT
RATE GENERATOR
SCP1
SCP0
SCR2
SCR1
SCR0
R8
T8
M
WAKE
SCCR1
–––
BAUD RATE
REGISTER
INTERNAL
PROCESSOR
CLOCK
7
TD0
RDI
see note
NOTE:
The serial data communications data register (SCDAT) is controlled by the R/W signal.
It is the transmit data register when written and receive data register when read.
SCCR2
SCSR
TE
SBK
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