參數(shù)資料
型號： ST72T121J2T6
元件分類： 8位微控制器
英文描述： 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
中文描述： 8位微控制器與2/4/8K字節(jié)在系統(tǒng)可編程閃存
文件頁數(shù)： 62/93頁
文件大?。?/td> 915K
代理商： ST72T121J2T6
62/93
ST72E121 ST72T121
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 34
) 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.
Table 16. SCI Register Map and Reset Values
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 34
) 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.
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.)
50
Register
Name
7
6
5
4
3
2
1
0
SR
Reset Value
DR
Reset Value
BRR
Reset Value
CR1
Reset Value
CR2
Reset Value
ERPR
Reset Value
ETPR
Reset Value
TDRE
1
DR7
-
SCP1
0
R8
-
TIE
0
ERPR7
0
TC
1
DR6
-
SCP0
0
T8
-
TCIE
0
ERPR6
0
RDRF
0
DR5
-
SCT2
x
IDLE
0
DR4
-
SCT1
x
M
-
ILIE
0
OR
0
DR3
-
SCT0
x
WAKE
-
TE
0
NF
0
DR2
-
SCR2
x
FE
0
DR1
-
SCR1
x
-
0
51
DR0
-
SCR0
x
52
53
-
-
-
-
54
RIE
0
RE
0
RWU
0
SBK
0
55
ERPR5
0
ERPR4
0
ERPR3
0
ERPR2
0
ERPR1
0
ERPR0
0
57
ETPR7
0
ETPR6
0
ETPR5
0
ETPR4
0
ETPR3
0
ETPR2
0
ETPR1
0
ETPR0
0
62
相關(guān)PDF資料
PDF描述
ST72T121J4B6 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
ST72T121J4T6 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
ST72121 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
ST72121J2 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST72T121J2T6S 制造商:STMicroelectronics 功能描述:
ST72T121J4B6 功能描述:8位微控制器 -MCU OTP EPROM 16K SPI/SC RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
ST72T121J4T6 功能描述:8位微控制器 -MCU OTP EPROM 16K SPI/SC RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
ST72T121J4T6S 制造商:STMicroelectronics 功能描述:
ST72T141K2B6 功能描述:8位微控制器 -MCU OTP EPROM 8K SPI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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