参数资料
型号: MC68HC08QY4MDW
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
封装: 1.27 MM PITCH, PLASTIC, MS-013AA, SOIC-16
文件页数: 6/178页
文件大小: 2311K
代理商: MC68HC08QY4MDW
MC68HC08QY/QT Family Data Sheet, Rev. 1
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
相关PDF资料
PDF描述
MC68HC08QY4VDTE 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
MC9S12XD64VAA 16-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP80
MP-1-12.0288MHZ QUARTZ CRYSTAL RESONATOR, 12.0288 MHz
MP-14.0960MHZ QUARTZ CRYSTAL RESONATOR, 4.096 MHz
MP-1-RFREQ11 QUARTZ CRYSTAL RESONATOR, 20 MHz - 34 MHz
相关代理商/技术参数
参数描述
MC68HC08SR12 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers
MC68HC08TV24CFB 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers
MC68HC08XL36 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC08XL36CB 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC08XL36CFU 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit