Holtek HT66F20 Manual page 5

HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
Interrupts ...................................................................................................... 202
Interr�pt Registers ............................................................................................................... 202
Interr�pt Operation .............................................................................................................. 2�6
External Interr�pt ................................................................................................................. 220
Comparator Interr�pt ........................................................................................................... 220
M�lti-f�nction Interr�pt ........................................................................................................ 220
A/D Converter Interr�pt ....................................................................................................... 22�
Time Base Interr�pt ............................................................................................................. 22�
Serial Interface Mod�le Interr�pt ......................................................................................... 223
External Peripheral Interr�pt ............................................................................................... 223
EEPROM Interr�pt .............................................................................................................. 223
LVD Interr�pt ....................................................................................................................... 224
TM Interr�pts ....................................................................................................................... 224
Interr�pt Wake-�p F�nction ................................................................................................. 225
Programming Considerations .............................................................................................. 225
Low Voltage Detector - LVD ....................................................................... 226
LVD Register ....................................................................................................................... 226
LVD Operation ..................................................................................................................... 22�
SCOM Function for LCD .............................................................................. 228
LCD Operation .................................................................................................................... 228
LCD Bias Control ................................................................................................................ 229
Configuration Options ................................................................................. 231
Application Circuits ..................................................................................... 232
UART Module Serial Interface .................................................................... 233
UART Mod�le Feat�res....................................................................................................... 233
UART Mod�le Overview ...................................................................................................... 233
UART Mod�le Block Diagram ............................................................................................. 233
Pin Assignment ................................................................................................................... 234
UART Mod�le Pin Description............................................................................................. 236
UART Mod�le D.C. Characteristics ..................................................................................... 23�
UART Mod�le A.C. Characteristics ..................................................................................... 238
UART Mod�le F�nctional Description ................................................................................. 238
UART Mod�le Internal Signal .............................................................................................. 238
UART Mod�le SPI Interface ................................................................................................ 239
UART Mod�le External Pin Interfacing................................................................................ 240
UART Data Transfer Scheme.............................................................................................. 240
UART Commands ............................................................................................................... 24�
UART Stat�s and Control Registers.................................................................................... 24�
Ba�d Rate Generator .......................................................................................................... 24�
UART Mod�le Set�p and Control ........................................................................................ 249
Managing Receiver Errors .................................................................................................. 254
UART Mod�le Interr�pt Str�ct�re ........................................................................................ 255
UART Mod�le Power-down and Wake-�p .......................................................................... 256
Using the UART F�nction.................................................................................................... 25�
Application Circ�it with UART Mod�le................................................................................. 258
Rev. 2.50 5 ��ne 22� 20��