mc68hc908qf4 Freescale Semiconductor, Inc, mc68hc908qf4 Datasheet - Page 119

• Manufacturer Part Number: mc68hc908qf4
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

14.1 Introduction
14.2 RST and IRQ Pins Initialization
MC68HC908QF4 — Rev. 1.0
MOTOROLA
Data Sheet — MC68HC908QF4
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
registers. The SIM is a system state controller that coordinates CPU and exception
timing.
The SIM is responsible for:
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
Section 5. Configuration Register
•
•
•
•
Bus clock generation and control for CPU and peripherals
–
–
Master reset control, including power-on reset (POR) and computer
operating properly (COP) timeout
Interrupt control:
–
–
–
CPU enable/disable timing
Freescale Semiconductor, Inc.
For More Information On This Product,
Stop/wait/reset/break entry and recovery
Internal clock control
Acknowledge timing
Arbitration control timing
Vector address generation
System Integration Module (SIM)
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Section 14. System Integration Module (SIM)
Figure
14-1.
Figure 14-2
(CONFIG).
is a summary of the SIM I/O
Data Sheet
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