參數(shù)資料
型號(hào): MC68HC05C8FB
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數(shù): 126/156頁
文件大?。?/td> 1755K
代理商: MC68HC05C8FB
Serial Communications Interface (SCI)
SCI Operation
MC68HC05C8A — Rev. 4.0
Advance Information
MOTOROLA
Serial Communications Interface (SCI)
71
Figure 9-2. SCI Transmitter
0
T8
SCDR ($0011)
6
BIT 7
5
4321
BIT 0
BAUD RATE REGISTER (BAUD)
SCP0
SCR2
SCR1
$000D
R8
SCI CONTROL REGISTER 1 (SCCR1)
M
WAKE
$000E
TCIE
TIE
SCI CONTROL REGISTER 2 (SCCR2)
RIE
ILIE
TE
RE
RWU
SBK
$000F
SCP1
TC
TDRE
SCI STATUS REGISTER (SCSR)
RDRF
IDLR
OR
NF
$0010
BIT 6
BIT 7
SCI DATA REGISTER (SCDR)
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
$0011
FE
0
TRANSMIT SHIFT REGISTER
7
6
5
4
3
2
1
0
8
H
L
TRANSMITTER
CONTROL LOGIC
LO
A
D
F
R
O
M
SC
D
R
S
H
IF
T
EN
ABL
E
PR
EA
M
B
LE
(ALL
LOG
IC
1S)
BR
EAK
(A
LL
LOGI
C
0S
)
TDRE
TC
M
T8
TE
PIN BUFFER
AND CONTROL
PD1/
TDO
INTERNAL DATA BUS
SBK
TIE
TCIE
SCI
RECEIVE
REQUESTS
SCI
INTERRUPT
REQUEST
1X
BAUD RATE
CLOCK
0
SCR0
0
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