IA186XL/IA188XL
16-Bit Microcontrollers
Data Sheet
July 6, 2011
TABLE OF CONTENTS
List of Figures..................................................................................................................................5
List of Tables ...................................................................................................................................6
1.
Introduction.............................................................................................................................7
1.1 General Description.......................................................................................................7
1.2 Features .........................................................................................................................7
Packaging, Pin Descriptions, and Physical Dimensions.........................................................9
2.1 Packages and Pinouts ....................................................................................................9
2.1.1 IA186XL 68 PLCC Package ..........................................................................10
2.1.2 IA188XL 68 PLCC Package ..........................................................................12
2.1.3 PLCC Physical Dimensions............................................................................14
2.1.4 IA186XL 80 PQFP Package...........................................................................15
2.1.5 IA188XL 80 PQFP Package...........................................................................17
2.1.6 PQFP Physical Dimensions............................................................................19
2.1.7 IA186XL 80 LQFP Package...........................................................................20
2.1.8 IA188XL 80 LQFP Package...........................................................................22
2.1.9 LQFP Physical Dimensions............................................................................24
2.2 IA186XL Pin/Signal Descriptions ..............................................................................25
2.3 IA188XL Pin/Signal Descriptions ..............................................................................31
Maximum Ratings, Thermal Characteristics, and DC Parameters .......................................37
Functional Description..........................................................................................................39
4.1 Device Architecture.....................................................................................................39
4.1.1 Bus Interface Unit...........................................................................................39
4.1.2 Clock Generator..............................................................................................42
4.1.3 Interrupt Control Unit.....................................................................................42
4.1.4 Timer/Counter Unit ........................................................................................42
4.1.5 Chip-Select/Ready Generation Logic.............................................................43
4.1.6 DMA...............................................................................................................44
4.1.7 DRAM Refresh Control Unit..........................................................................44
4.1.8 Power-Save Control........................................................................................44
4.2 Operating Modes.........................................................................................................45
4.2.1 Enhanced Mode ..............................................................................................45
4.2.2 Queue Status Mode.........................................................................................45
4.2.3 ONCE Mode...................................................................................................45
4.2.4 Math Coprocessor (IA186XL Only)...............................................................45
Table 12. Internal Register Map..........................................................................................46
AC Specifications .................................................................................................................47
5.1 Major Cycle Timings – Read Cycle............................................................................47
5.2 Major Cycle Timings – Write Cycle...........................................................................49
5.3 Major Cycle Timings – Interrupt Acknowledge Cycle...............................................51
5.4 Software Halt Cycle Timings......................................................................................53
5.5 Clock Timings.............................................................................................................55
5.6 Ready, Peripheral and Queue Status Timings.............................................................56
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IA211080711-09
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