MC68HC908GR4 MOTOROLA [Motorola, Inc], MC68HC908GR4 Datasheet - Page 271

• Manufacturer Part Number: MC68HC908GR4
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Technical Data — MC68HC908GR8
19.1 Contents
19.2 Introduction
MC68HC908GR8 — Rev 4.0
MOTOROLA
Section 19. System Integration Module (SIM)
19.2
19.3
19.4
19.5
19.6
19.7
19.8
This section describes the system integration module (SIM). Together
with the CPU, the SIM controls all MCU activities. A block diagram of the
SIM is shown in
input/output (I/O) registers. The SIM is a system state controller that
coordinates CPU and exception timing. The SIM is responsible for:
Freescale Semiconductor, Inc.
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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 COP
timeout
Interrupt control:
– Acknowledge timing
– Arbitration control timing
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
SIM Bus Clock Control and Generation . . . . . . . . . . . . . . . . . 275
Reset and System Initialization. . . . . . . . . . . . . . . . . . . . . . . . 276
SIM Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Exception Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .290
SIM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
System Integration Module (SIM)
Go to: www.freescale.com
Figure
19-1.
Table 19-1
is a summary of the SIM
Technical Data
271