參數(shù)資料
型號： MC68HCL05C8FB
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, PQFP44
封裝： QFP-44
文件頁數(shù)： 132/156頁
文件大?。?/td> 1755K
代理商： MC68HCL05C8FB
Serial Communications Interface (SCI)
SCI Input/Output (I/O) Registers
MC68HC05C8A — Rev. 4.0
Advance Information
MOTOROLA
Serial Communications Interface (SCI)
77
R8 — Bit 8 (Received)
When the SCI is receiving 9-bit characters, R8 is the ninth bit of the
received character. R8 receives the ninth bit from the receive shift
register at the same time that the SCDR receives the other eight bits.
Reset has no effect on the R8 bit.
T8 — Bit 8 (Transmitted)
When the SCI is transmitting 9-bit characters, T8 is the ninth bit of the
transmitted character. T8 is loaded into the transmit shift register at
the same time that SCDR is loaded into the transmit shift register.
Reset has no effect on the T8 bit.
M — Character Length Bit
This read/write bit determines whether SCI characters are 8 bits long
or 9 bits long. The ninth bit can be used as an extra stop bit, as a
receiver wakeup signal, or as a mark or space parity bit. Reset has no
effect on the M bit.
1 = 9-bit SCI characters
0 = 8-bit SCI characters
WAKE — Wakeup Bit
This read/write bit determines which condition wakes up the SCI: a
logic 1 (address mark) in the most significant bit position of a received
character or an idle condition of the PD0/RDI pin. Reset has no effect
on the WAKE bit.
1 = Address mark wakeup
0 = Idle line wakeup
Address: $000E
Bit 7
6
54321
Bit 0
Read:
R8
T8
0
M
WAKE
000
Write:
Reset:
Unaffected by reset
= Unimplemented
Figure 9-5. SCI Control Register 1 (SCCR1)
相關PDF資料
PDF描述
MC68HSC05C8FNR2 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PQCC44
MC68HSC05C8P 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDIP40
MC68HSC05K0DW 8-BIT, MROM, MICROCONTROLLER, PDSO16
MC68HCL05K0DWR3 8-BIT, MROM, MICROCONTROLLER, PDSO16
MC68HCL05K0P 8-BIT, MROM, MICROCONTROLLER, PDIP16
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