mc68hc908mr24 Freescale Semiconductor, Inc, mc68hc908mr24 Datasheet - Page 92

• Manufacturer Part Number: mc68hc908mr24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

System Integration Module (SIM)
7.2 Introduction
Advance Information
92
This section describes the system integration module (SIM). Together
with the central processor unit (CPU), the SIM controls all MCU
activities. A block diagram of the SIM is shown in
The SIM is a system state controller that coordinates CPU and exception
timing. The SIM is responsible for:
Table 7-1
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•
•
•
•
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
computer operating properly (COP) timeout
Interrupt control:
– Acknowledge timing
– Arbitration control timing
– Vector address generation
CPU enable/disable timing
Modular architecture expandable to 128 interrupt sources
System Integration Module (SIM)
shows the internal signal names used in this section.
MC68HC908MR24
Figure
Freescale Semiconductor
7-1.
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Rev. 4.1