HT67F488 datasheet(4/171 Pages) HOLTEK

4 / 171 page

Rev. 1.60

�ove��e� �� 016

HT67F488/HT67F489

TinyPowerTM A/D Flash MCU with LCD & EEPROM

TM Exte�nal Pins .................................................................................................................. 63

TM Input/Output Pin Cont�ol Registe�s ................................................................................. 63

P�og�a��ing Conside�ations................................................................................................ 65

Periodic Type TM – PTM................................................................................ 66

Pe�iodic TM Ope�ation .......................................................................................................... 66

Pe�iodic Type TM Registe� Desc�iption................................................................................. 67

Pe�iodic Type TM Ope�ating Modes...................................................................................... 7�

Compact Type TM – CTM .............................................................................. 81

Co�pact TM Ope�ation ........................................................................................................ 81

Co�pact Type TM Registe� Desc�iption................................................................................ 8�

Co�pact Type TM Ope�ating Modes .................................................................................... 86

Analog to Digital Converter – ADC............................................................... 92

A/D Ove�view ........................................................................................................................ 9�

A/D Conve�te� Registe� Desc�iption...................................................................................... 9�

A/D Conve�te� Data Registe�s – ADRL� ADRH ..................................................................... 93

A/D Conve�te� Cont�ol Registe�s – ADCR0� ADCR1� ACERL� ACERH ................................ 93

A/D Ope�ation ...................................................................................................................... 97

A/D Input Pins ....................................................................................................................... 98

Su��a�y of A/D Conve�sion Steps ...................................................................................... 99

P�og�a��ing Conside�ations.............................................................................................. 100

A/D T�ansfe� Function ......................................................................................................... 100

A/D P�og�a��ing Exa�ple................................................................................................. 101

LCD Display Memory................................................................................... 103

LCD D�ive� Output............................................................................................................... 103

LCD Cont�ol Registe�.......................................................................................................... 104

LCD Wavefo��.................................................................................................................... 108

LED Driver .....................................................................................................111

LED D�ive� Ope�ation...........................................................................................................111

LED D�ive� Registe� .............................................................................................................111

UART Interface..............................................................................................112

UART Exte�nal Pin Inte�facing .............................................................................................113

UART Data T�ansfe� Sche�e...............................................................................................113

UART Status and Cont�ol Registe�s.....................................................................................113

Baud Rate Gene�ato�...........................................................................................................119

UART Setup and Cont�ol..................................................................................................... 1�0

UART T�ans�itte�................................................................................................................ 1��

UART Receive� ................................................................................................................... 1�3

Managing Receive� E��o�s .................................................................................................. 1�5

UART Module Inte��upt St�uctu�e........................................................................................ 1�6

Add�ess Detect Mode.......................................................................................................... 1�7

UART Module Powe� Down and Wake-up .......................................................................... 1�7

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