Samsung S3F80JB User Manual page 6

Chapter 8
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
Overview .................................................................................................................................................... 9-1
Port Data Registers............................................................................................................................ 9-4
Pull-Up Resistor Enable Registers ..................................................................................................... 9-5
S3F80JB MICROCONTROLLER
Table of Contents
RESET
I/O Ports
(Continued)
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