參數(shù)資料
型號: MC68HC08QT1MDWE
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO8
封裝: LEAD FREE, EIAJ, SOIC-8
文件頁數(shù): 6/176頁
文件大小: 1124K
代理商: MC68HC08QT1MDWE
MC68HC08QY/QT Family Data Sheet, Rev. 2
Freescale Semiconductor
103
Chapter 13
System Integration Module (SIM)
13.1 Introduction
This section describes the system integration module (SIM), which supports up to 24 external and/or
internal interrupts. Together with the central processor unit (CPU), the SIM controls all microcontroller unit
(MCU) activities. A block diagram of the SIM is shown in Figure 13-1. The SIM is a system state controller
that coordinates CPU and exception timing.
The SIM is responsible for:
Bus clock generation and control for CPU and peripherals
Stop/wait/reset/break entry and recovery
Internal clock control
Master reset control, including power-on reset (POR) and computer operating properly (COP)
timeout
Interrupt control:
Acknowledge timing
Arbitration control timing
Vector address generation
CPU enable/disable timing
13.2 RST and IRQ Pins Initialization
RST and IRQ pins come out of reset as PTA3 and PTA2 respectively. RST and IRQ functions can be
activated by programing CONFIG2 accordingly. Refer to Chapter 5 Configuration Register (CONFIG).
Table 13-1. Signal Name Conventions
Signal Name
Description
BUSCLKX4
Buffered clock from the internal, RC or XTAL oscillator circuit.
BUSCLKX2
The BUSCLKX4 frequency divided by two. This signal is again
divided by two in the SIM to generate the internal bus clocks
(bus clock = BUSCLKX4 ÷ 4).
Address bus
Internal address bus
Data bus
Internal data bus
PORRST
Signal from the power-on reset module to the SIM
IRST
Internal reset signal
R/W
Read/write signal
相關(guān)PDF資料
PDF描述
MC68HC08QT2CDWE 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO8
MC68HC08QT2MDWE 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO8
MC68HC08QY2VDTE 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
MC68HC08QY2MDTE 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
MC68HC08XK48PB 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP64
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC08QT2 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers
MC68HC08QT4 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers
MC68HC08QY1 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers
MC68HC08QY2 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers
MC68HC08QY4 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers