78M6612-IMSLASHFSLASHP datasheet(2/111 Pages) TERIDIAN

2 / 111 page

78M6612 Data Sheet

DS_6612_001

Rev. 1.2

Table of Contents

Hardware Description ...................................................................................................................8

1.1

Hardware Overview..................................................................................................................8

1.2

Analog Front End (AFE)..........................................................................................................9

1.2.1 Input Multiplexer ..........................................................................................................9

1.2.2 A/D Converter (ADC) ...................................................................................................9

1.2.3 FIR Filter ...................................................................................................................10

1.2.4 Voltage References ...................................................................................................10

1.2.5 Temperature Sensor ..................................................................................................11

1.2.6 Battery Monitor ..........................................................................................................11

1.2.7 Functional Description ...............................................................................................11

1.3

Digital Computation Engine (CE)...........................................................................................12

1.3.1 Measurement Equations............................................................................................13

1.3.2 Real-Time Monitor .....................................................................................................13

1.3.3 Pulse Generator ........................................................................................................13

1.3.4 CE Functional Overview.............................................................................................14

1.4

80515 MPU Core ..................................................................................................................16

1.4.1 Memory Organization.................................................................................................17

1.4.2 Special Function Registers (SFRs) ............................................................................19

1.4.3 Special Function Registers (Generic 80515 SFRs) ....................................................20

1.4.4 Special Function Registers Specific to the 78M6612 .................................................22

1.4.5 Instruction Set ...........................................................................................................24

1.4.6 UARTs.......................................................................................................................24

1.4.7 Timers and Counters .................................................................................................27

1.4.8 WD Timer (Software Watchdog Timer).......................................................................29

1.4.9 Interrupts...................................................................................................................31

1.5

On-Chip Resources...............................................................................................................40

1.5.1 Oscillator ...................................................................................................................40

1.5.2 PLL and Internal Clocks ............................................................................................40

1.5.3 Real-Time Clock (RTC) ..............................................................................................40

1.5.4 Temperature Sensor ..................................................................................................41

1.5.5 Physical Memory .......................................................................................................41

1.5.6 Optical Interface ........................................................................................................42

1.5.7 Digital I/O ..................................................................................................................43

1.5.8 LCD Drivers ...............................................................................................................45

1.5.9 Battery Monitor ..........................................................................................................45

1.5.10 EEPROM Interface ....................................................................................................46

1.5.11 Hardware Watchdog Timer ........................................................................................49

1.5.12 Program Security.......................................................................................................49

1.5.13 Test Ports ..................................................................................................................50

Functional Description ................................................................................................................51

2.1

Theory of Operation...............................................................................................................51

2.2

System Timing Summary ......................................................................................................52

2.3

Battery Modes .......................................................................................................................53

2.3.1 BROWNOUT Mode ...................................................................................................54

2.3.2 LCD Mode .................................................................................................................55

2.3.3 SLEEP Mode.............................................................................................................55

2.4

Fault and Reset Behavior ......................................................................................................60

2.5

Wake Up Behavior ................................................................................................................61

2.5.1 Wake on Timer ..........................................................................................................61

2.6

Data Flow..............................................................................................................................61

2.7

CE/MPU Communication ......................................................................................................62

78M6612-IM/F/P Datasheet(PDF) 2 Page - Teridian Semiconductor Corporation

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