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参数资料
型号： ST72C314N4TC
厂商： STMICROELECTRONICS
元件分类： 微控制器/微处理器
英文描述： 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64
封装： 14 X 14 MM, ROHS COMPLIANT, TQFP-64
文件页数： 147/150页
文件大小： 3530K
代理商： ST72C314N4TC
ST72334xx-Auto, ST72314xx-Auto, ST72124Jx-Auto
96/150
SERIAL COMMUNICATIONS INTERFACE (Cont’d)
DATA REGISTER (DR)
Read/Write
Reset Value: Undefined
Contains the Received or Transmitted data char-
acter, depending on whether it is read from or writ-
ten to.
The Data register performs a double function (read
and write) since it is composed of two registers,
one for transmission (TDR) and one for reception
(RDR).
The TDR register provides the parallel interface
between the internal bus and the output shift reg-
ister (see Figure 47).
The RDR register provides the parallel interface
between the input shift register and the internal
bus (see Figure 47).
BAUD RATE REGISTER (BRR)
Read/Write
Reset Value: 00xx xxxx (XXh)
Bit 7:6= SCP[1:0] First SCI Prescaler
These 2 prescaling bits allow several standard
clock division ranges:
Bit 5:3 = SCT[2:0] SCI Transmitter rate divisor
These 3 bits, in conjunction with the SCP1 and
SCP0 bits, define the total division applied to the
bus clock to yield the transmit rate clock in conven-
tional Baud Rate Generator mode.
Note: this TR factor is used only when the ETPR
fine tuning factor is equal to 00h; otherwise, TR is
replaced by the ETPR dividing factor.
Bit 2:0 = SCR[2:0] SCI Receiver rate divisor.
These 3 bits, in conjunction with the SCP1 and
SCP0 bits define the total division applied to the
bus clock to yield the receive rate clock in conven-
tional Baud Rate Generator mode.
Note: this RR factor is used only when the ERPR
fine tuning factor is equal to 00h; otherwise, RR is
replaced by the ERPR dividing factor.
7
0
DR7
DR6
DR5
DR4
DR3
DR2
DR1
DR0
7
0
SCP1 SCP0 SCT2 SCT1 SCT0 SCR2 SCR1 SCR0
PR Prescaling factor
SCP1
SCP0
1
0
3
0
1
4
1
0
13
1
TR dividing factor
SCT2
SCT1
SCT0
1
0
2
0
1
4
0
1
0
8
0
1
16
1
0
32
1
0
1
64
1
0
128
1
RR dividing factor
SCR2
SCR1
SCR0
1
0
2
0
1
4
0
1
0
8
0
1
16
1
0
32
1
0
1
64
1
0
128
1
相关PDF资料
PDF描述
ST72124J2TC/XXX 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44
ST72334J4TB/XXX 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44
ST72C314J2TC 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
ST72314N4TA/XXX 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP64
ST72314N4TB/XXX 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP64
相关代理商/技术参数
参数描述
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ST72C334J2T6 功能描述:8位微控制器 -MCU Flash 8K SPI/SCI RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72C334J4B6 功能描述:8位微控制器 -MCU Flash 16K SPI/SCI RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
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ST72C334J4T6/TR 制造商:STMicroelectronics 功能描述:
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