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2-3-1 Bus Controller ......................................................................................... II - 15
2-3-2 Control Registers..................................................................................... II - 16
2-4 Standby Function..................................................................................................... II - 19
2-4-1 Overview ................................................................................................. II - 19
2-4-2 CPU Mode Control Register .................................................................... II - 21
2-4-3 Transition between SLOW and NORMAL.............................................. II - 22
2-4-4 Transition to STANDBY Modes ............................................................. II - 23
2-5 Clock Switching........................................................................................................ II - 25
2-6 Bank Function .......................................................................................................... II - 27
2-6-1 Overview ................................................................................................. II - 27
2-6-2 Bank Setting ............................................................................................ II - 27
2-6-3 Bank Memory Space ............................................................................... II - 29
2-7 ROM Correction ....................................................................................................... II - 30
2-7-1 Overview ................................................................................................. II - 30
2-7-2 Correction Sequence ............................................................................... II - 30
2-7-3 ROM Correction Control Register ........................................................... II - 32
2-7-4 ROM Correction Setup Example .............................................................. II - 35
2-8 Reset ........................................................................................................................ II - 38
2-8-1 Reset Operation....................................................................................... II - 38
2-8-2 Oscillation Stabilization Wait Time .......................................................... II - 40
2-9 Register Protection ................................................................................................... II - 42
2-9-1 Overview ................................................................................................. II - 42
2-9-2 Setting of the Register Protection Function ............................................ II - 42
2-9-3 Rewrite Procedure ................................................................................... II - 42
Chapter 3 Interrupts
3-1 Overview................................................................................................................. III - 2
3-1-1 Functions ............................................................................................... III - 3
3-1-2 Block Diagram ...................................................................................... III - 4
3-1-3 Operation ............................................................................................... III - 5
3-1-4 Interrupt Flag Setup ............................................................................... III - 14
3-2 Control Registers .................................................................................................. III - 15
3-2-1 Registers List ....................................................................................... III - 15
3-2-2 Interrupt Control Registers.................................................................. III - 16
3-3 External Interrupts ................................................................................................... III - 38
3-3-1 Overview ................................................................................................ III - 38
3-3-2 Block Diagram ........................................................................................ III - 39
3-3-3 Control Registers.................................................................................... III - 42
3-3-4 Programmable Active Edge Interrupt ..................................................... III - 47
3-3-5 Both Edges Interrupt .............................................................................. III - 48
3-3-6 Key Input Interrupt ................................................................................ III - 19
3-3-7 Noise Filter ............................................................................................. III - 51