78M6618 Data Sheet

DS_6618_005

2

Rev. 1.4

Table of Contents

1

Hardware Functional Description...................................................................................................... 5

1.1

Hardware Overview ..................................................................................................................... 5

1.2

Device Reset................................................................................................................................ 7

1.3

Power Management..................................................................................................................... 7

1.3.1 Voltage Regulator ............................................................................................................ 7

1.3.2 Power Fault Management................................................................................................ 7

1.3.3 BROWNOUT.................................................................................................................... 7

1.3.4 SLEEP mode ................................................................................................................... 7

1.4

Analog Front End (AFE)............................................................................................................... 7

1.4.1 Analog Current and Voltage Inputs ................................................................................. 8

1.5

Digital Computation Engine (CE)................................................................................................. 8

1.6

80515 MPU Core ......................................................................................................................... 8

1.6.1 SFR.................................................................................................................................. 9

1.7

XRAM........................................................................................................................................... 9

1.8

IORAM ......................................................................................................................................... 9

1.9

FLASH.......................................................................................................................................... 9

1.9.1 Program Security ............................................................................................................. 9

1.10 Oscillator ...................................................................................................................................... 9

1.11 PLL and Internal Clock Generation.............................................................................................. 9

1.12 Real-Time Clock (RTC).............................................................................................................. 10

1.13 Hardware Watchdog Timer ........................................................................................................ 10

1.14 Temperature Sensor .................................................................................................................. 10

1.15 General Purpose Digital I/O ....................................................................................................... 10

1.16 LCD Drivers ............................................................................................................................... 11

1.17 EEPROM Interface .................................................................................................................... 11

1.18 SPI Slave Port............................................................................................................................ 11

1.19 Test Port..................................................................................................................................... 12

1.20 UARTs........................................................................................................................................ 13

1.20.1 UART1 (OPT_TX/OPT_RX) .......................................................................................... 13

1.21 In Circuit Emulator (ICE) Port .................................................................................................... 13

2

Electrical Specifications................................................................................................................... 14

2.1

Absolute Maximum Ratings ....................................................................................................... 14

2.2

Recommended External Components....................................................................................... 15

2.3

Recommended Operating Conditions........................................................................................ 15

2.4

Performance Specifications ....................................................................................................... 16

2.4.1 Input Logic Levels .......................................................................................................... 16

2.4.2 Output Logic Levels ....................................................................................................... 16

2.4.3 Power-Fault Comparator ............................................................................................... 16

2.4.4 Battery Monitor............................................................................................................... 17

2.4.5 Supply Current ............................................................................................................... 17

2.4.6 V3P3D Switch ................................................................................................................ 17

2.4.7 2.5 V Voltage Regulator................................................................................................. 18

2.4.8 Low-Power Voltage Regulator ....................................................................................... 18

2.4.9 Crystal Oscillator............................................................................................................ 18

2.4.10 LCD DAC ....................................................................................................................... 18

2.4.11 LCD Drivers ................................................................................................................... 19

2.4.12 Optical Interface............................................................................................................. 19

2.4.13 Temperature Sensor ...................................................................................................... 19

2.4.14 VREF ............................................................................................................................. 20

2.4.15 ADC Converter, V3P3A Referenced ............................................................................. 21

2.5

Timing Specifications ................................................................................................................. 22

2.5.1 Flash Memory ................................................................................................................ 22

2.5.2 EEPROM Interface ........................................................................................................ 22

2.5.3 RESET ........................................................................................................................... 22

2.5.4 RTC................................................................................................................................ 22

2.5.5 SPI Slave Port (MISSION Mode)................................................................................... 23