71M6403
Electronic Trip Unit
SEPTEMBER 2006
Table of Contents
GENERAL DESCRIPTION .........................................................................................................................1
FEATURES ..................................................................................................................................1
HARDWARE DESCRIPTION .....................................................................................................................8
Hardware Overview ......................................................................................................................8
External Components ...................................................................................................................8
Analog Front End (AFE) ...............................................................................................................8
Multiplexer......................................................................................................................8
ADC ...............................................................................................................................9
FIR Filter ........................................................................................................................9
Voltage Reference .........................................................................................................9
Temperature Sensor ......................................................................................................10
INEUTRAL .....................................................................................................................10
Functional Description....................................................................................................11
Computation Engine (CE).............................................................................................................11
CE Functional Overview.................................................................................................12
Real-Time Monitor..........................................................................................................13
Power Up Short Circuit Detection Time..........................................................................13
80515 MPU Core..........................................................................................................................14
80515 Overview .............................................................................................................14
Memory Organization .....................................................................................................14
Special Function Registers (SFRs) ................................................................................16
Special Function Registers (Generic 80515 SFRs) ........................................................17
Special Function Registers Specific to the 71M6403 .....................................................19
Instruction Set ................................................................................................................20
UART .............................................................................................................................21
Timers and Counters......................................................................................................24
WD Timer (Software Watchdog Timer) ..........................................................................27
Interrupts........................................................................................................................29
External Interrupts..........................................................................................................32
Interrupt Priority Level Structure.....................................................................................33
Interrupt Sources and Vectors........................................................................................34
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2006 TERIDIAN Semiconductor Corporation
REV 1.0
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
