參數(shù)資料
型號: MC68HCL05C9AFN
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 148/162頁
文件大小: 1093K
代理商: MC68HCL05C9AFN
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Serial Communications Interface (SCI)
Advance Information
MC68HC05C9A Rev. 5.0
86
Serial Communications Interface (SCI)
MOTOROLA
TE — Transmitter Enable Bit
Setting this read/write bit begins the transmission by sending a
preamble of 10 or 11 logic 1s from the transmit shift register to the
PD1/TDO pin. Resets clear the TE bit.
1 = Transmission enabled
0 = Transmission disabled
RE — Receiver Enable Bit
Setting this read/write bit enables the receiver. Clearing the RE bit
disables the receiver and receiver interrupts but does not affect the
receiver interrupt flags. Resets clear the RE bit.
1 = Receiver enabled
0 = Receiver disabled
RWU — Receiver Wakeup Enable Bit
This read/write bit puts the receiver in a standby state. Typically, data
transmitted to the receiver clears the RWU bit and returns the receiver
to normal operation. The WAKE bit in SCCR1 determines whether an
idle input or an address mark brings the receiver out of standby state.
Reset clears the RWU bit.
1 = Standby state
0 = Normal operation
SBK — Send Break Bit
Setting this read/write bit continuously transmits break codes in the
form of 10-bit or 11-bit groups of logic 0s. Clearing the SBK bit stops
the break codes and transmits a logic 1 as a start bit. Reset clears the
SBK bit.
1 = Break codes being transmitted
0 = No break codes being transmitted
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