mc68hc908bd48 Freescale Semiconductor, Inc, mc68hc908bd48 Datasheet - Page 87
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mc68hc908bd48
Manufacturer Part Number
mc68hc908bd48
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908BD48.pdf
(288 pages)
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7.1 Contents
MC68HC908BD48
Freescale Semiconductor
Data Sheet — MC68HC908BD48
—
Rev. 2.1
Section 7. System Integration Module (SIM)
7.2
7.3
7.3.1
7.3.2
7.3.3
7.4
7.4.1
7.4.2
7.4.2.1
7.4.2.2
7.4.2.3
7.4.2.4
7.5
7.5.1
7.5.2
7.5.3
7.6
7.6.1
7.6.1.1
7.6.1.2
7.6.2
7.6.2.1
7.6.2.2
7.6.3
7.6.4
7.6.5
7.7
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
SIM Bus Clock Control and Generation . . . . . . . . . . . . . . . . . . 91
Reset and System Initialization. . . . . . . . . . . . . . . . . . . . . . . . . 92
SIM Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Exception Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Bus Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Clock Start-Up from POR . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Clocks in Stop Mode and Wait Mode . . . . . . . . . . . . . . . . . . 91
External Pin Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Active Resets from Internal Sources . . . . . . . . . . . . . . . . . . 93
SIM Counter During Power-On Reset . . . . . . . . . . . . . . . . . 96
SIM Counter During Stop Mode Recovery . . . . . . . . . . . . . . 97
SIM Counter and Reset States. . . . . . . . . . . . . . . . . . . . . . . 97
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Interrupt Status Registers. . . . . . . . . . . . . . . . . . . . . . . . . . 101
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Break Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Status Flag Protection in Break Mode . . . . . . . . . . . . . . . . 104
System Integration Module (SIM)
Power-On Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
Computer Operating Properly (COP) Reset. . . . . . . . . . . 95
Illegal Opcode Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Illegal Address Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
Hardware Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
SWI Instruction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Interrupt Status Register 1 . . . . . . . . . . . . . . . . . . . . . . . 103
Interrupt Status Register 2 . . . . . . . . . . . . . . . . . . . . . . . 103
Data Sheet
87
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