参数资料
型号: MC68HC05C12ACB
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42
封装: SHRINK, PLASTIC, DIP-42
文件页数: 128/156页
文件大小: 756K
代理商: MC68HC05C12ACB
Serial Communications Interface (SCI)
SCI I/O Registers
MC68HC05C12A Rev. 3.0
General Release Specification
MOTOROLA
Serial Communications Interface (SCI)
73
NON-DISCLOSURE
AGREEMENT
REQUIRED
M — Character Length
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 one (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
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