Rev. 1.50 12 August 28, 2017 Rev. 1.50 13 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
PA6/SSEG9/AN5/
VREF
PA6
PAWU
PAPU
ST CMOS
General purpose I/O. Register enabled pull-up and
wake-up.
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/
SSEG16/AN0/XT1
PB0 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
INT0
IFS
INTEG
ST — External Interrupt 0
SSEG16 SLCDC3 — SSEG Software controlled LCD segment output
AN0 ACERL AN — A/D Converter analog input
XT1 CO LXT — LXT oscillator pin
PB1/INT1/
SSEG15/AN1/XT2
PB1 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
INT1
IFS
INTEG
ST — External Interrupt 1
SSEG15 SLCDC3 — SSEG Software controlled LCD segment output
AN1 ACERL AN — A/D Converter analog input
XT2 CO — LXT LXT oscillator pin
PB2/TCK0/
SSEG14/AN2
PB2 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
TCK0 TM0C0 ST — TM0 input
SSEG14 SLCDC3 — SSEG Software controlled LCD segment output
AN2 ACERL AN — A/D Converter analog input
PB3/SSEG7/AN7
PB3 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
SSEG7 SLCDC2 — SSEG Software controlled LCD segment output
AN7 ACERL AN — A/D Converter analog input
PB4/CLO/SSEG6
PB4 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
CLO TMPC — CMOS System clock output
SSEG6 SLCDC2 — SSEG Software controlled LCD segment output
PB5/[SCS]/
SSEG5/SCOM5
PB5 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
[SCS]
SLCDC0
SIMC0
IFS
— CMOS SPI slave select
SSEG5 SLCDC1 — SSEG Software controlled LCD segment output
SCOM5 SLCDC1 — SCOM Software controlled LCD common output
PB6/[SCK/SCL]/
SSEG4/SCOM4
PB6 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
[SCK]
SIMC0
IFS
ST CMOS SPI serial clock
[SCL]
SIMC0
IFS
ST NMOS I
2
C clock line
SSEG4 SLCDC1 — SSEG Software controlled LCD segment output
SCOM4 SLCDC1 — SCOM Software controlled LCD common output
PC0/SSEG17/
OSC1
PC0 PCPU ST CMOS General purpose I/O. Register enabled pull-up.
SSEG17 SLCDC3 — SSEG Software controlled LCD segment output
OSC1 CO HXT — HXT oscillator pin
PC1/SSEG18/
OSC2
PC1 PCPU ST CMOS General purpose I/O. Register enabled pull-up.
SSEG18 SLCDC3 — SSEG Software controlled LCD segment output
OSC2 CO — HXT HXT oscillator pin
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General