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S3F80JB MICROCONTROLLER vii
Table of Contents (Continued)
Chapter 8 RESET
Overview ....................................................................................................................................................8-1
Reset Sources ...................................................................................................................................8-1
Reset Mechanism..............................................................................................................................8-4
External Reset Pin.............................................................................................................................8-4
Watch Dog Timer Reset.....................................................................................................................8-4
LVD Reset .........................................................................................................................................8-4
Internal Power-On Reset ...................................................................................................................8-5
External Interrupt Reset.....................................................................................................................8-7
Stop Error Detection & Recovery.......................................................................................................8-8
Power-Down Modes...................................................................................................................................8-9
Idle Mode...........................................................................................................................................8-9
Back-up mode....................................................................................................................................8-10
Stop Mode .........................................................................................................................................8-11
Sources to Release Stop Mode .........................................................................................................8-12
System Reset Operation....................................................................................................................8-14
Hardware Reset Values.....................................................................................................................8-15
Recommendation for Unusued Pins ..................................................................................................8-19
Summary Table of Back-Up Mode, Stop Mode, and Reset Status.....................................................8-20
Chapter 9 I/O Ports
Overview ....................................................................................................................................................9-1
Port Data Registers............................................................................................................................9-4
Pull-Up Resistor Enable Registers.....................................................................................................9-5