參數(shù)資料
型號： ST72124J2T
廠商： 意法半導(dǎo)體
英文描述： 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
中文描述： 8位單電壓閃存，ADC和16位定時器，SPI和脊髓損傷界面微控制器
文件頁數(shù)： 96/153頁
文件大?。?/td> 1533K
代理商： ST72124J2T
ST72334J/N, ST72314J/N, ST72124J
96/153
SERIAL COMMUNICATIONS INTERFACE
(Cont’d)
EXTENDED RECEIVE PRESCALER DIVISION
REGISTER (ERPR)
Read/Write
Reset Value: 0000 0000 (00h)
Allows setting of the Extended Prescaler rate divi-
sion factor for the receive circuit.
Bit 7:1 =
ERPR[7:0]
8-bit Extended Receive Pres-
caler Register.
The extended Baud Rate Generator is activated
when a value different from 00h is stored in this
register. Therefore the clock frequency issued
from the 16 divider (see Figure 3.) is divided by the
binary factor set in the ERPR register (in the range
1 to 255).
The extended baud rate generator is not used af-
ter a reset.
EXTENDED TRANSMIT PRESCALER DIVISION
REGISTER (ETPR)
Read/Write
Reset Value:0000 0000 (00h)
Allows setting of the External Prescaler rate divi-
sion factor for the transmit circuit.
Bit 7:1 =
ETPR[7:0]
8-bit Extended Transmit Pres-
caler Register.
The extended Baud Rate Generator is activated
when a value different from 00h is stored in this
register. Therefore the clock frequency issued
from the 16 divider (see Figure 3.) is divided by the
binary factor set in the ETPR register (in the range
1 to 255).
The extended baud rate generator is not used af-
ter a reset.
Table 18. SCI Register Map and Reset Values
7
0
ERPR
7
ERPR
6
ERPR
5
ERPR
4
ERPR
3
ERPR
2
ERPR
1
ERPR
0
7
0
ETPR
7
ETPR
6
ETPR
5
ETPR
4
ETPR
3
ETPR
2
ETPR
1
ETPR
0
Address
(Hex.)
Register
Label
7
6
5
4
3
2
1
0
0050h
SCISR
Reset Value
TDRE
1
TC
1
RDRF
0
IDLE
0
OR
0
NF
0
FE
0
0
0051h
SCIDR
Reset Value
MSB
x
x
x
x
x
x
x
LSB
x
0052h
SCIBRR
Reset Value
SOG
0
0
VPOL
x
2FHDET
x
HVSEL
x
VCORDIS
x
CLPINV
x
BLKINV
x
0053h
SCICR1
Reset Value
R8
x
T8
x
0
M
x
WAKE
x
0
0
0
0054h
SCICR2
Reset Value
TIE
0
TCIE
0
RIE
0
ILIE
0
TE
0
RE
0
RWU
0
SBK
0
0055h
SCIPBRR
Reset Value
MSB
0
0
0
0
0
0
0
LSB
0
0057h
SCIPBRT
Reset Value
MSB
0
0
0
0
0
0
0
LSB
0
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