參數(shù)資料
型號: EM78P809NS
廠商: ELAN Microelctronics Corp .
元件分類: 8位微控制器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數(shù): 23/75頁
文件大?。?/td> 531K
代理商: EM78P809NS
EM78P809N
8-Bit Microcontroller
Product Specification
(V1.0) 07.26.2005
(This specification is subject to change without further notice)
19
URS
UART Status Register ( Address: 07h )
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
URRD8
EVEN
PRE
PRERR
OVERR
FMERR
URBF
RXE
Bit 7 ( URRD8 ) :
Receiving data bit 8
Bit 6 ( EVEN ) :
Select parity check
EVEN = “0” :
Odd parity
EVEN = “1” :
Even parity
Bit 5 ( PRE )
: Enable parity addition
PRE = “0” :
Disable
PRE = “1” :
Enable
Bit 4 ( PRERR ) :
Parity error flag.
Set to 1 when parity error occurred, and cleared to 0 by software.
Bit 3 ( OVERR ) :
Overrun error flag.
Set to 1 when overrun error occurred, and cleared to 0 by software.
Bit 2 ( FMERR ) :
Framing error flag.
Set to 1 when framing error occurred, and cleared to 0 by software.
Bit 1 ( URBF ) :
UART read buffer full flag.
Set to 1 when one character is received. Reset to 0 automatically when read
from the URS register. URBF will be cleared by hardware when receiving is
enabled. URBF bit is read-only. Therefore, reading the URS register is
necessary to avoid an overrun error.
Bit 0 ( RXE ) :
Enable receiving
RXE = “0” :
Disable
RXE = “1” :
Enable
URRD
UART Receive Data Buffer ( Address: 08h )
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
URRD7
URRD6
URRD5
URRD4
URRD3
URRD2
URRD1
URRD0
Bit 7 ~ Bit 0 ( URRD7 ~ URRD0 ) :
UART receive data buffer. Read only.
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