s908az32ag2cfue Freescale Semiconductor, Inc, s908az32ag2cfue Datasheet - Page 75

• Manufacturer Part Number: s908az32ag2cfue
• Description: M68hc08 Microcontrollers 8-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 7
System Integration Module (SIM)
7.1 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
registers. The SIM is a system state controller that coordinates CPU and exception timing. The SIM is
responsible for:
Freescale Semiconductor
SIM Break Flag Control Register (SBFCR)
•
•
•
•
SIM Reset Status Register (SRSR)
SIM Break Status Register (SBSR)
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
Register Name
Stop/wait/reset/break entry and recovery
Internal clock control
Acknowledge timing
Arbitration control timing
Vector address generation
Register
Address
Table 7-1. I/O Register Address Summary
Figure 7-1. SIM I/O Register Summary
BCFE
Bit 7
POR
R
R
MC68HC908AZ32A Data Sheet, Rev. 2
Figure
= Reserved
$FE00
PIN
SBSR
R
R
6
7-2.
Figure 7-1
COP
R
R
5
$FE01
SRSR
is a summary of the SIM input/output (I/O)
ILOP
R
R
4
SBFCR
$FE03
ILAD
R
R
3
R
R
2
0
BW
LVI
R
1
Bit 0
R
0
R
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