Holtek HT66F0175 - Page 14

Rev. 1.50 14 August 28, 2017 Rev. 1.50 15 August 28, 2017
HT66F0175/HT66F0185
A/D Flash MCU with EEPROM
HT66F0175/HT66F0185
A/D Flash MCU with EEPROM
Pad Name Function OPT I/T O/T Description
PA1/[SDO]/SSEG2/
SCOM2
PA1
PAWU
PAPU
ST CMOS
General purpose I/O. Register enabled pull-up and
wake-up.
[SDO]
SLCDC0
SIMC0
IFS
— CMOS SPI data output
SSEG2
SLCDC0
SLCDC1
— SSEG Software controlled LCD segment output
SCOM2
SLCDC0
SLCDC1
— SCOM Software controlled LCD common output
PA2/ICPCK/
OCDSCK
PA2
PAWU
PAPU
ST CMOS
General purpose I/O. Register enabled pull-up and
wake-up.
ICPCK — ST CMOS ICP Clock pin
OCDSCK — ST — OCDS Clock pin, for EV chip only.
PA3/[SDI/SDA]/CX/
SSEG3/SCOM3
PA3
PAWU
PAPU
ST CMOS
General purpose I/O. Register enabled pull-up and
wake-up.
[SDI]
SLCDC0
SIMC0
IFS
ST — SPI data input
[SDA]
SLCDC0
SIMC0
IFS
ST NMOS I
2
C address/data line
CX CPC — CMOS Comparator output
SSEG3
SLCDC0
SLCDC1
— SSEG Software controlled LCD segment output
SCOM3
SLCDC0
SLCDC1
— SCOM Software controlled LCD common output
PA4/TCK1/
SSEG15/AN3
PA4
PAWU
PAPU
ST CMOS
General purpose I/O. Register enabled pull-up and
wake-up.
TCK1 TM1C0 ST — TM1 input
SSEG15 SLCDC3 — SSEG Software controlled LCD segment output
AN3 ACERL AN — A/D Converter analog input
PA5/SSEG10/AN4/
VREFI
PA5
PAWU
PAPU
ST CMOS
General purpose I/O. Register enabled pull-up and
wake-up.
SSEG10 SLCDC2 — SSEG Software controlled LCD segment output
AN4 ACERL AN — A/D Converter analog input
VREFI SADC2 AN — A/D Converter PGA voltage input
PA6/TCK2/SSEG9/
AN5/VREF
PA6
PAWU
PAPU
ST CMOS
General purpose I/O. Register enabled pull-up and
wake-up.
TCK2 TM2C0 ST — TM2 input
SSEG9 SLCDC2 — SSEG Software controlled LCD segment output
AN5 ACERL AN — A/D Converter analog input
VREF SADC2 — AO A/D Converter reference voltage output
PA7/TP1/SSEG8/
AN6
PA7
PAWU
PAPU
ST CMOS
General purpose I/O. Register enabled pull-up and
wake-up.
TP1 TMPC ST CMOS TM1 input/output
SSEG8 SLCDC2 — SSEG Software controlled LCD segment output
AN6 ACERL AN — A/D Converter analog input
PB0/INT0/SSEG18/
AN0/XT1
PB0 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
INT0
INTEG
IFS
ST — External Interrupt 0
SSEG18 SLCDC3 — SSEG Software controlled LCD segment output
AN0 ACERL AN — A/D Converter analog input
XT1 CO LXT — LXT oscillator pin