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CONTENTS

CHAPTER 1 OVERVIEW ................................................................................................... 1

1.1 Features of MB89202/F202RA Series .................................................... ............................................ 2
1.2 MB89202/F202RA Series Product Lineup .................................................. ........................................ 4
1.3 Differences between Models .............................................................................................................. 6
1.4 Block Diagram of MB89202/F202RA Series ........................................................................ ............... 7
1.5 Pin Assignment .............................................................................. ..................................................... 8
1.6 Package Dimensions ........................................ ................................................................................ 10
1.7 Pin Functions Description ....................................... .......................................................................... 12
1.8 I/O Circuit Types ........................................ ....................................................................................... 14

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 o n Memory ............................................................................................. 26
3.2 Dedicated Register .......... ................................................................................................................. 27
3.2.1 Condition Code Register (CCR) ..................... ............................................................................. 29
3.2.2 Register Bank Pointer (RP) ............................................ ... .... ... ... ................................................ 31
3.3 General-Purpose Registers .... ... ... .... ... ... ... ... .................................................................................... 32
3.4 Interrupts ........................................................................................................................... ................ 34
3.4.1 Interrupt Level Setting Reg isters (ILR1 to ILR4) .......................................................................... 36
3.4.2 Steps in the Interrupt Ope ration .................................................................................................. 37
3.4.3 Multiple Interrupts ..................................................................... ................................................... 39
3.4.4 Interrupt Processing Time .............. ... ... ....................................................................................... 40
3.4.5 Stack Operation at Interr upt Processing ...................................................................................... 41
3.4.6 Stack Area for Interrupt Pro cessing ............................................................................................. 42
3.5 Reset ................................................................................................................................ ................ 43
3.5.1 Reset Flag Register (RSFR) ........................................................................................................ 45
3.5.2 External Reset Pin ....................................................................................................... ................ 47
3.5.3 Reset Operation ................ ... ... .... ... ... ... ....................................................................................... 48
3.5.4 State of Each Pin at Reset ...................... .... ... ............................................................................. 50
3.6 Clock ........................................................................................................................................ ......... 51
3.6.1 Clock Generator ............. ............................................................................................................. 53
3.6.2 Clock Controller ........................................................................... ................................................ 54
3.6.3 System Clock Control Register (SYCC) ...................................... ... ............................................. 56
3.6.4 Clock Mode .................................................................................................................................. 58
3.6.5 Oscillation Stabilization Wait Time .............................. ................................................................ 60
3.7 Standby Mode (Low-Power Consumption Mode) ... .......................................................................... 62
3.7.1 Operations in Standby Mod e .......................................................... ............................................. 63
3.7.2 Sleep Mode ................ ................................................................................................................. 64
3.7.3 Stop Mode ................................................... ................................................................................ 65