MC68HC908QY2 MOTOROLA [Motorola, Inc], MC68HC908QY2 Datasheet - Page 9
MC68HC908QY2
Manufacturer Part Number
MC68HC908QY2
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908QY2.pdf
(230 pages)
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MOTOROLA
MC68HC908QY4•MC68HC908QT4•MC68HC908QY2•MC68HC908QT2•MC68HC908QY1•MC68HC908QT1
6.5
6.6
6.6.1
6.6.2
6.7
6.8
6.9
7.1
7.2
7.3
7.4
7.4.1
7.4.2
7.4.3
7.5
7.5.1
7.5.2
7.5.2.1
7.5.2.2
7.5.2.3
7.5.2.4
7.5.2.5
7.6
7.6.1
7.6.2
7.6.3
7.7
7.7.1
7.7.1.1
7.7.1.2
Arithmetic/Logic Unit (ALU) . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
CPU During Break Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Instruction Set Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Opcode Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
RST and IRQ Pins Initialization . . . . . . . . . . . . . . . . . . . . . . . .79
SIM Bus Clock Control and Generation . . . . . . . . . . . . . . . . . . 79
Reset and System Initialization. . . . . . . . . . . . . . . . . . . . . . . . . 80
SIM Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Exception Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Section 7. System Integration Module (SIM)
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Bus Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
Clock Start-Up from POR . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Clocks in Stop Mode and Wait Mode . . . . . . . . . . . . . . . . . . 80
External Pin Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Active Resets from Internal Sources . . . . . . . . . . . . . . . . . . 81
SIM Counter During Power-On Reset . . . . . . . . . . . . . . . . . 85
SIM Counter During Stop Mode Recovery . . . . . . . . . . . . . . 85
SIM Counter and Reset States. . . . . . . . . . . . . . . . . . . . . . . 85
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Power-On Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Computer Operating Properly (COP) Reset. . . . . . . . . . . 83
Illegal Opcode Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Illegal Address Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Low-Voltage Inhibit (LVI) Reset . . . . . . . . . . . . . . . . . . . .84
Hardware Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
SWI Instruction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Table of Contents
Table of Contents
9