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