Table of Contents
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1.
Introduction ............................................................................................................................................ 1
2.
CPU Supervisor ..................................................................................................................................... 4
2.1
Reset ............................................................................................................................... 5
2.2
Watchdog Timer ............................................................................................................................. 7
2.3
CPU Supervisor Registers .............................................................................................................. 8
3.
High-Frequency (HF) Oscillator ........................................................................................................... 10
3.1
Auto Clock Detect Mode ............................................................................................................... 12
3.2
Programmable Spread Spectrum ................................................................................................. 13
3.3
High-Frequency (HF) Oscillator Registers.................................................................................... 14
4.
Low-Frequency (LF) Oscillator............................................................................................................. 17
4.1
Low-Frequency (LF) Oscillator Registers ..................................................................................... 18
5.
Real-Time Clock (RTC) ....................................................................................................................... 21
5.1
Real-Time Clock (RTC) Registers ................................................................................................ 22
6.
Periodic Interrupt/Wake-up Timer........................................................................................................ 23
6.1
Periodic Interrupt/Wake-up Timer Registers ................................................................................ 24
7.
Serial Interface ..................................................................................................................................... 25
7.1
Serial Communications Interface.................................................................................................. 25
7.2
Interrupt Interface ......................................................................................................................... 28
7.3
Serial Communication/Interrupt Registers .................................................................................... 28
8.
Auxiliary Functions ............................................................................................................................... 30
8.1
Scratchpad RAM and ID number.................................................................................................. 30
8.2
Write Protect Logic ....................................................................................................................... 31
8.3
Voltage Regulator ......................................................................................................................... 33
8.4
Backup Power............................................................................................................................... 33
9.
Registers .............................................................................................................................................. 34
SH3000UM version 0.95
Copyright ©2002 Semtech Corporation
Table of Contents
2002-08
SH3000 User Manual
Preliminary
ii
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Table of Contents
