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MC68HC908AZ60 Datasheet, PDF (108/480 Pages) Motorola, Inc – HCMOS Microcontroller Unit | |||
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System Integration Module (SIM)
Introduction
This section describes the system integration module (SIM), which
supports up to 32 external and/or internal interrupts. Together with the
central processor unit (CPU), the SIM controls all MCU activities. A block
diagram of the SIM is shown in Figure 1. Figure 2 is a summary of the
SIM input/output (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
â Stop/wait/reset/break entry and recovery
â Internal clock control
⢠Master reset control, including power-on reset (POR) and
computer operating properly (COP) timeout
⢠Interrupt control:
â Acknowledge timing
â Arbitration control timing
â Vector address generation
⢠CPU enable/disable timing
MC68HC908AZ60 â Rev 2.0
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System Integration Module (SIM)
2-sim
MOTOROLA
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