HT85F2250 datasheet(12/187 Pages) HOLTEK

12 / 187 page

Rev. 1.10

1� of 187

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A/D Flash 8051 Core Low Pin Count MCU

HT85F2250/HT85F2262

List of Figures

Stack B�ock Diagram ............................................................................................................................... �0

Program Memor� Str�ct�re ..................................................................................................................... ��

Un�ock Proced�re F�owchart.................................................................................................................... �8

Page Erase F�owchart ............................................................................................................................. �9

B�te Read F�owchart ............................................................................................................................... 40

B�te Write F�owchart (FMCR.0=1� FMCR.6=0) ....................................................................................... 41

B�te Write F�owchart (FMCR.0=1� FMCR.6=1) ....................................................................................... 4�

Interna� Data Memor� Str�ct�re............................................................................................................... 47

HT8�F��6�/HT8�F��0 XDATA.............................................................................................................. 48

DPTRn Registers Contro� B�ock Diagram................................................................................................ ��

Cr�sta�/Resonator Osci��ator – HXT......................................................................................................... �7

System Clock Configurations................................................................................................................... �9

Watchdog Timer....................................................................................................................................... 6�

Watchdog Timer Refresh Operation ........................................................................................................ 70

Power-On Reset Timing .......................................................................................................................... 74

Interr�pt Str�ct�re.................................................................................................................................... 9�

Q�asi-bidirectiona� I/O Str�ct�re.............................................................................................................111

P�sh-p�� O�tp�t Str�ct�re .....................................................................................................................11�

Open-drain O�tp�t Str�ct�re ..................................................................................................................11�

Inp�t On�� Str�ct�re................................................................................................................................11�

Mode 0 and Mode 1 B�ock Diagram – Timer 0� 1 .................................................................................. 1�1

Mode � B�ock Diagram – Timer 0� 1 ...................................................................................................... 1��

Mode � B�ock Diagram – Timer 0 .......................................................................................................... 1��

Timer � with PCA Mod��es B�ock Diagram ............................................................................................ 1��

Capt�re Modes B�ock Diagram.............................................................................................................. 1�0

Compare Mode 0 – Mod��e 0~� ............................................................................................................ 1�1

Compare Match Mode 0 Timing Diagram – T�CM=0 ............................................................................ 1��

Compare Mode 1 – Mod��e0~� ............................................................................................................. 1��

Compare Match Mode 1 Timing Diagram – T�CM=1 ............................................................................ 1��

Re�oad Mode – Mod��e 0....................................................................................................................... 1�4

Timer� C�ock O�tp�t B�ock Diagram...................................................................................................... 1��

Programmab�e C�ock O�tp�t Timing Diagram – Mod��e 0 .................................................................... 1��

A/D Converter Str�ct�re ........................................................................................................................ 1�6

Temperat�re vs Vo�tage Diagram .......................................................................................................... 14�

A/D Conversion Timing .......................................................................................................................... 14�

Idea� A/D Transfer F�nction (PGA Gain=1)............................................................................................ 146

Vo�tage Reference Generator B�ock Diagram........................................................................................ 147

Comparator 0......................................................................................................................................... 148

I�C Master S�ave B�s Connection.......................................................................................................... 1��

I�C Interface Operation F�ow.................................................................................................................. 1��

I�C B�ock Diagram.................................................................................................................................. 1�6

I�C B�s Initia�isation F�ow Chart ............................................................................................................ 1�7

I�C Comm�nication Timing Diagram...................................................................................................... 1�9

HT85F2250 数据表(PDF) 12 Page - Holtek Semiconductor Inc

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