參數(shù)資料
型號: MC68HC05PD6
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP80
封裝: PLASTIC, TQFP-80
文件頁數(shù): 10/165頁
文件大?。?/td> 841K
代理商: MC68HC05PD6
July 7, 1997
GENERAL RELEASE SPECIFICATION
MC68HC05PD6
SERIAL COMMUNICATIONS INTERFACE
MOTOROLA
REV 1.1
11-5
Figure 11-4. Example of Start-Bit Sampling Technique
Figure 11-5. SCI Articial Start following a Framing Error
Figure 11-6. SCI Start following a Break
16x INTERNAL SAMPLING CLOCK
RT CLOCK EDGES (for all three examples)
12345678
R
T
R
T
R
T
R
TT
R
T
R
T
R
T
R
1
1111
start
000
0
start qualiers
start edge verication samples
idle
1
1111
start
001
0
idle
noise
1
0
1
1111
start
001
0
idle
noise
RDI1
RDI2
RDI3
receive data in
data
expected stop
articial edge
data samples
data
(a) Case 1: Receive line low during articial edge
receive data in
data
expected stop
start edge
data samples
data
(b) Case 2: Receive line high during start edge
start bit
data
start
qualiers
samples
data
samples
data
samples
start edge
verication
samples
detected as
valid start edge
break
expected stop
receive data in
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