HT66F20 datasheet(3/298 Pages) HOLTEK

3 / 298 page

Rev. 1.90

�

�e��a�� 18� �01�

Rev. 1.90

�

�e��a�� 18� �01�

HT66F20/HT66F30/HT66F40/HT66F50/HT66F60

HT66FU30/HT66FU40/HT66FU50/HT66FU60

Enhanced A/D Flash Type 8-Bit MCU with EEPROM

HT66F20/HT66F30/HT66F40/HT66F50/HT66F60

HT66FU30/HT66FU40/HT66FU50/HT66FU60

Enhanced A/D Flash Type 8-Bit MCU with EEPROM

EEPROM Data Memory.................................................................................. 45

EEPROM Data Memo�� St��ct��e ........................................................................................ 45

EEPROM Registe�s .............................................................................................................. 45

Reading Data f�om the EEPROM ......................................................................................... 49

W�iting Data to the EEPROM................................................................................................ 49

W�ite P�otection..................................................................................................................... 49

EEPROM Inte��pt ................................................................................................................ 49

P�og�amming Conside�ations................................................................................................ 50

P�og�amming Examples........................................................................................................ 50

Oscillator ........................................................................................................ 51

Oscillato� Ove�view ............................................................................................................... 51

System Clock Configurations................................................................................................ 51

Exte�nal C��stal/Ce�amic Oscillato� – HXT ........................................................................... 5�

Exte�nal RC Oscillato� – ERC ............................................................................................... 54

Inte�nal High Speed RC Oscillato� – HIRC ........................................................................... 54

Exte�nal ��.768kHz C��stal Oscillato� – LXT........................................................................ 55

Inte�nal Low Speed Oscillato� – LIRC................................................................................... 56

S�pplementa�� Oscillato�s .................................................................................................... 56

Operating Modes and System Clocks ......................................................... 57

S�stem Clock ........................................................................................................................ 57

S�stem Ope�ation Modes...................................................................................................... 59

Cont�ol Registe� .................................................................................................................... 60

�ast Wake-�p........................................................................................................................ 6�

Ope�ating Mode Switching.................................................................................................... 6�

NORMAL Mode to SLOW Mode Switching........................................................................... 64

SLOW Mode to NORMAL Mode Switching........................................................................... 65

Ente�ing the SLEEP0 Mode .................................................................................................. 66

Ente�ing the SLEEP1 Mode .................................................................................................. 66

Ente�ing the IDLE0 Mode...................................................................................................... 66

Ente�ing the IDLE1 Mode...................................................................................................... 67

Stand�� C��ent Conside�ations........................................................................................... 67

Wake-�p................................................................................................................................ 68

P�og�amming Conside�ations................................................................................................ 68

Watchdog Timer............................................................................................. 69

Watchdog Time� Clock So��ce.............................................................................................. 69

Watchdog Time� Cont�ol Registe� ......................................................................................... 69

Watchdog Time� Ope�ation ................................................................................................... 70

Reset and Initialisation.................................................................................. 71

Reset ��nctions .................................................................................................................... 71

Reset Initial Conditions ......................................................................................................... 74

HT66F20 Datasheet(PDF) 3 Page - Holtek Semiconductor Inc

HT66F20 Datasheet(HTML) 3 Page - Holtek Semiconductor Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL