MC68HC708MP16 Datasheet, PDF (82/398 Pages) Freescale Semiconductor, Inc – Microcontrollers

System Integration Module (SIM)
7.2 Introduction
This section describes the system integration module. Together with the
CPU, the SIM controls all MCU activities. A block diagram of the SIM is
shown in Figure 7-1. Figure 7-1 is a summary of the SIM I/O registers.
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
– Wait/reset/break entry and recovery
– Internal clock control
• Master reset control, including power-on reset (POR) and COP
timeout
• Interrupt control:
– Acknowledge timing
– Arbitration control timing
– Vector address generation
• CPU enable/disable timing
• Modular architecture expandable to 128 interrupt sources
Technical Data
82
System Integration Module (SIM)
MC68HC708MP16 — Rev. 3.1
Freescale Semiconductor