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HT46RU67 Folha de dados(PDF) 40 Page - Holtek Semiconductor Inc

Nome de Peças HT46RU67
Descrição Electrónicos  100-pin LQFP
Download  68 Pages
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Fabricante Electrônico  HOLTEK [Holtek Semiconductor Inc]
Página de início  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT46RU67 Folha de dados(HTML) 40 Page - Holtek Semiconductor Inc

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HT46RU67/HT46CU67
Rev. 1.30
40
2014-06-10
· STOPS
此位用来设置停止位的长度为一位或两位。若 STOPS=1,表明有两位停止位;STOPS=0,表明只
有一位停止位。
· PRT
奇偶校验选择位。若 PRT=1,表明选择奇校验;若 PRT=0,表明选择偶校验。
· PREN
此位为奇偶校验使能位。若 PREN=1,表明使能奇偶校验;若 PREN=0,表明除能奇偶校验。
· BNO
BNO 用来定义数据长度格式,
选择为 8 位或 9 位数据。若 BNO=1,表明传输数据为 9 位;若 BNO=0,
表明传输数据为 8 位。若选择了 9 位数据长度格式,RX8 和 TX8 将分别存储接收和发送数据的第 9
位。
· UARTEN
此位为 UART 的使能位。若 UARTEN=0,UART 功能将除能,RX 和 TX 引脚可用作普通的输入
输出口;若 UARTEN=1,UART 功能将使能,TX 和 RX 引脚将分别由 TXEN 和 RXEN 控制。UART
除能将清除缓冲器,所有缓冲器中的数据将被忽略,另外波特率计数器、错误和状态标志位被复位,
TXEN、RXEN、TXBRK、RXIF、OERR、FERR 和 NF 将清零,而 TIDLE、TXIF 和 RIDLE 将置位,
UCR1、UCR2 和 BRG 寄存器中的其它位保持不变。若 UART 工作时 UARTEN 清零,所有发送和接
收将停止,模块也将复位成上述状态。当 UART 再次使能时,它将在上次配置下重新工作。
· UCR2 寄存器
UCR2 是 UART 的另一个控制寄存器,
它的主要功能是使能或除能发送和接收以及允许 UART 的各种
中断。它也可用来控制波特率,使能接收唤醒和地址侦测。
详细解释如下:
· TEIE
此位为发送寄存器为空时中断的使能或除能位。若 TEIE=1,当发送寄存器为空,TXIF 置位时,
UART 的中断请求标志置位;若 TEIE=0,UART 中断请求标志不受 TXIF 的影响。
· TIIE
此位为发送器空闲时中断的使能或除能位。若 TIIE=1,当发送寄存器空闲,TIDLE 置位时,UART
的中断请求标志置位;若 TIIE=0,UART 中断请求标志不受 TIDLE 的影响。


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