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CONTENTS
CHAPTER 1
GENERAL ..................................................................................................... 1
1.1
Features of MB89930A Series ............................................................................................................... 2
1.2
Models Available for MB89930A Series ................................................................................................ 4
1.3
Differences between Models ................................................................................................................. 6
1.4
Block Diagram of MB89930A Series ..................................................................................................... 7
1.5
Pin Configuration ................................................................................................................................... 8
1.6
Outer Dimensions ................................................................................................................................ 10
1.7
Pin Function Description ...................................................................................................................... 12
1.8
Input/Output Circuit Configuration ....................................................................................................... 15
CHAPTER 2
HANDLING DEVICES ................................................................................. 17
2.1
Precautions on Handling Devices ........................................................................................................ 18
CHAPTER 3
CPU ............................................................................................................. 21
3.1
Memory Space ..................................................................................................................................... 22
3.1.1
Specific-purpose Areas .................................................................................................................. 24
3.1.2
Location of 16-bit Data on Memory ................................................................................................ 26
3.2
Dedicated Register .............................................................................................................................. 28
3.2.1
Condition Code Register (CCR) ..................................................................................................... 30
3.2.2
Register Bank Pointer (RP) ............................................................................................................ 33
3.3
General-Purpose Registers ................................................................................................................. 34
3.4
Interrupts ............................................................................................................................................. 36
3.4.1
Interrupt Level Setting Registers (ILR1, 2, 3, and 4) ...................................................................... 38
3.4.2
Steps in the Interrupt Operation ..................................................................................................... 40
3.4.3
Multiple Interrupts ........................................................................................................................... 42
3.4.4
Interrupt Processing Time .............................................................................................................. 44
3.4.5
Stack Operation at Interrupt Processing ......................................................................................... 46
3.4.6
Stack Area for Interrupt Processing ................................................................................................ 47
3.5
Reset ................................................................................................................................................... 48
3.5.1
Reset Flag Register (RSFR) ........................................................................................................... 50
3.5.2
External Reset Terminal ................................................................................................................. 52
3.5.3
Reset Operation ............................................................................................................................. 53
3.5.4
State of Each Terminal at Reset ..................................................................................................... 55
3.6
Clock .................................................................................................................................................... 56
3.6.1
Clock Generator ............................................................................................................................. 58
3.6.2
Clock Controller .............................................................................................................................. 60
3.6.3
System Clock Control Register (SYCC) ......................................................................................... 62
3.6.4
Clock Mode ..................................................................................................................................... 64
3.6.5
Oscillation Stabilization Wait Time ................................................................................................. 66
3.7
Standby Mode (Low-Power Consumption Mode) ................................................................................ 68
3.7.1
Operations in Standby Mode .......................................................................................................... 69
3.7.2
Sleep Mode .................................................................................................................................... 70
3.7.3
Stop Mode ...................................................................................................................................... 71
3.7.4
Standby Control Register (STBC) .................................................................................................. 72