Fujitsu MB90420/5 (A) Series Hardware Manual page 5

Chapter 4 Clock.................................................................................................................... 4-1
4.1 Overview of Clock.......................................................................................................................4-3
4.2 Block Diagram of Clock Generation Section ...........................................................................4-5
4.3 Clock Select Register (CKSCR).................................................................................................4-7
4.4 Clock Mode..................................................................................................................................4-9
4.5 Oscillation Stabilization Wait Time ......................................................................................... 4-12
4.6 Connection of Oscillator and External Clock ........................................................................4-13
Chapter 5 Low-Power Consumption Mode......................................................................... 5-1
5.1 Overview of Low-power Consumption Mode ..........................................................................5-3
5.2 Block Diagram of Low-power Consumption Controller .........................................................5-5
5.3 Low-power Consumption Mode Control Register (LPMCR) ..................................................5-7
5.4 CPU Intermittent Operation Mode...........................................................................................5-10
5.5 Standby Mode ...........................................................................................................................5-11
5.5.1 Sleep Mode ....................................................................................................................5-12
5.5.2 Time-base Timer Mode .................................................................................................5-14
5.5.3 Timer Mode ....................................................................................................................5-15
5.5.4 Stop Mode ......................................................................................................................5-17
5.6 State Transition Diagram .........................................................................................................5-19
5.7 Pin State in Standby Mode, at Reset ......................................................................................5-21
5.8 Precautions at Using Low-power Consumption Mode .........................................................5-22
Chapter 6 Interrupt............................................................................................................... 6-1
6.1 Overview of Interrupt..................................................................................................................6-3
6.2 Interrupt Factor and Interrupt Vector .......................................................................................6-5
6.3 Interrupt Control Registers and Resources.............................................................................6-7
6.3.1 Interrupt Control Register (ICR00 to ICR15) .................................................................6-8
6.3.2 Function of Interrupt Control Register........................................................................6-10
6.4 Hardware Interrupt....................................................................................................................6-13
6.4.1 Operation of Hardware Interrupt..................................................................................6-15
6.4.2 Processing at Interrupt Operation...............................................................................6-17
6.4.3 Use Procedure for Hardware Interrupt........................................................................6-18
6.4.4 Multiple Interrupts .........................................................................................................6-19
6.4.5 Hardware Interrupt Handling Time ..............................................................................6-20
6.5 Software Interrupt.....................................................................................................................6-21
2
6.6 EI OS Interrupt ..........................................................................................................................6-23
2
6.6.1 EI OS Descriptor (ISD) ..................................................................................................6-25
6.6.2 Each Register of EI
2
6.6.3 EI OS Operation ............................................................................................................6-29
6.6.4 Use Procedure for EI
2
6.6.5 EI OS Handling Time.....................................................................................................6-31
6.7 Exception Handling Interrupt ..................................................................................................6-33
6.8 Stack Operation for Interrupt Handling ..................................................................................6-34
6.9 Program Example for Interrupt Handling ...............................................................................6-36
2
OS Descriptor (ISD) ....................................................................6-26
2
OS ..............................................................................................6-30
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