參數(shù)資料
型號： M38049FFLSP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 16.8 MHz, MICROCONTROLLER, PDIP64
封裝： 17 X 56.40 MM, 1.78 MM HEIGHT, PLASTIC, SDIP-64
文件頁數(shù)： 71/129頁
文件大?。?/td> 1721K
代理商： M38049FFLSP
Rev.1.00
Oct 27, 2008
Page 46 of 128
REJ03B0266-0100
3804 Group (Spec.L)
Fig. 40 Structure of serial I/O1 control registers
b7
Transmit buffer empty flag (TBE)
0: Buffer full
1: Buffer empty
Receive buffer full flag (RBF)
0: Buffer empty
1: Buffer full
Transmit shift completion flag (TSC)
0: Transmit shift in progress
1: Transmit shift completed
Overrun error flag (OE)
0: No error
1: Overrun error
Parity error flag (PE)
0: No error
1: Parity error
Framing error flag (FE)
0: No error
1: Framing error
Summing error flag (SE)
0: (OE) U (PE) U (FE)=0
1: (OE) U (PE) U (FE)=1
Not used (returns “1” when read)
UART1 control register
(UART1CON : address 001B16)
Character length selection bit (CHAS)
0: 8 bits
1: 7 bits
Parity enable bit (PARE)
0: Parity checking disabled
1: Parity checking enabled
Parity selection bit (PARS)
0: Even parity
1: Odd parity
Stop bit length selection bit (STPS)
0: 1 stop bit
1: 2 stop bits
P45/TXD1 P-channel output disable bit (POFF)
0: CMOS output (in output mode)
1: N-channel open drain output (in output mode)
Not used (return “1” when read)
BRG count source selection bit (CSS)
0: f(XIN) (f(XCIN) in low-speed mode)
1: f(XIN)/4 (f(XCIN)/4 in low-speed mode)
Serial I/O1 synchronous clock selection bit (SCS)
0: BRG output divided by 4 when clock synchronous
serial I/O1 is selected, BRG output divided by 16
when UART is selected.
1: External clock input when clock synchronous serial
I/O1 is selected, external clock input divided by 16
when UART is selected.
SRDY1 output enable bit (SRDY)
0: P47 pin operates as normal I/O pin
1: P47 pin operates as SRDY1 output pin
Transmit interrupt source selection bit (TIC)
0: Interrupt when transmit buffer has emptied
1: Interrupt when transmit shift operation is completed
Transmit enable bit (TE)
0: Transmit disabled
1: Transmit enabled
Receive enable bit (RE)
0: Receive disabled
1: Receive enabled
Serial I/O1 mode selection bit (SIOM)
0: Clock asynchronous (UART) serial I/O
1: Clock synchronous serial I/O
Serial I/O1 enable bit (SIOE)
0: Serial I/O1 disabled
(pins P44 to P47 operate as normal I/O pins)
1: Serial I/O1 enabled
(pins P44 to P47 operate as serial I/O1 pins)
Serial I/O1 control register
(SIO1CON : address 001A16)
Serial I/O1 status register
(SIO1STS : address 001916)
b0
b7
b0
b7
b0
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