參數資料
型號: MC68HC05P18MDWR3
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, PDSO28
封裝: SOIC-28
文件頁數: 144/144頁
文件大?。?/td> 1348K
代理商: MC68HC05P18MDWR3
MC68HC(8)05P18 — Rev. 2.0
Advance Information
MOTOROLA
Serial Input/Output Port (SIOP)
99
Advance Information — MC68HC05P18/MC68HC805P18
Section 11. Serial Input/Output Port (SIOP)
11.1 Contents
11.2 Introduction
The simple synchronous serial input/output port (SIOP) subsystem is
designed to provide efficient serial communications between peripheral
devices or other MCUs. The SIOP is implemented as a 3-wire
master/slave system with serial clock (SCK), serial data Input (SDI), and
serial data output (SDO). A block diagram of the SIOP is shown in
The SIOP subsystem shares its input/output pins with port B. When the
SIOP is enabled (SPE bit set in register SCR), port B data direction
registers (DDR) and data registers are modified by the SIOP. Although
port B DDR and data registers can be altered by application software,
these actions could affect the transmitted or received data.
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