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Table of Contents
1. OUTLINE
1.1
MB89190/190A Series Features................................................................................................1-3
1.2
MB89190/190A Series Product Lineup...................................................................................... 1-4
1.3
Differences between Various Models ........................................................................................ 1-6
1.4
MB89190/190A Series Block Diagram ...................................................................................... 1-7
1.5
Pin Assignment Diagram ........................................................................................................... 1-8
1.6
Package Dimensions............................................................................................................... 1-10
1.7
Pin Functions ........................................................................................................................... 1-14
1.8
Input/Output Circuit Types ....................................................................................................... 1-17
2. DEVICE HANDLING
2.1
Device Handling Notes .............................................................................................................. 2-3
3. CPU
3.1
Memory Space........................................................................................................................... 3-3
3.1.1
Areas for Particular Uses .............................................................................................. 3-5
3.1.2
16-bit Data Allocation in Memory................................................................................... 3-7
3.2
Dedicated Registers .................................................................................................................. 3-8
3.2.1
Condition Code Register (CCR) .................................................................................. 3-10
3.2.2
Register Bank Pointer (RP) ......................................................................................... 3-12
3.3
General-purpose Register ....................................................................................................... 3-13
3.4
Interrupts.................................................................................................................................. 3-15
3.4.1
Interrupt Level Setting Registers (ILR1, 2, 3) .............................................................. 3-16
3.4.2
Processing at Interrupt Operation ............................................................................... 3-17
3.4.3
Multiple Interrupts ........................................................................................................3-19
3.4.4
Interrupt Processing Time ........................................................................................... 3-20
3.4.5
Stack Operation at Interrupt Processing ..................................................................... 3-21
3.4.6
Stack Area for Interrupt Processing ............................................................................ 3-22
3.5
Reset ....................................................................................................................................... 3-23
3.5.1
External Reset Pin....................................................................................................... 3-25
3.5.2
Reset Operation .......................................................................................................... 3-27
3.5.3
Reset State of Each Pin .............................................................................................. 3-29
3.6
Clocks ...................................................................................................................................... 3-30
3.6.1
Clock Generator .......................................................................................................... 3-31
3.6.2
Clock Controller...........................................................................................................3-33
3.6.3
Oscillation Stabilization Wait Time .............................................................................. 3-35
3.7
Standby Mode (Low Power Consumption) .............................................................................. 3-36
3.7.1
Operating State in Standby Mode ............................................................................... 3-37