Holtek HT66F0175 - Page 15

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
PB1/INT1/SSEG17/
AN1/XT2
PB1 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
INT1
INTEG
IFS
ST — External Interrupt 1
SSEG17 SLCDC3 — SSEG Software controlled LCD segment output
AN1 ACERL AN — A/D Converter analog input
XT2 CO — LXT LXT oscillator pin
PB2/TCK0/
SSEG16/AN2
PB2 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
TCK0 TM0C0 ST — TM0 input
SSEG16 SLCDC3 — SSEG Software controlled LCD segment output
AN2 ACERL AN — A/D Converter analog input
PB3/[TX]/TP2/
SSEG7/AN7
PB3 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
[TX]
UCR1
UCR2
— CMOS UART TX serial data output
TP2 TMPC ST CMOS TM2 input/output
SSEG7 SLCDC2 — SSEG Software controlled LCD segment output
AN7 ACERL AN — A/D Converter analog input
PB4/[RX]/CLO/
SSEG6
PB4 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
[RX]
UCR1
UCR2
ST — UART RX serial data input
CLO TMPC — CMOS System clock output
SSEG6 SLCDC2 — SSEG Software controlled LCD segment output
PB5/[SCS]/C-/
SSEG5/SCOM5
PB5 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
[SCS]
SLCDC0
SIMC0
IFS
ST CMOS SPI slave select
C- CPC AN — Comparator input
SSEG5 SLCDC1 — SSEG Software controlled LCD segment output
SCOM5 SLCDC1 — SCOM Software controlled LCD common output
PB6/[SCK/SCL]/C+/
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
C+ CPC AN — Comparator input
SSEG4 SLCDC1 — SSEG Software controlled LCD segment output
SCOM4 SLCDC1 — SCOM Software controlled LCD common output
PC0/SSEG19/
OSC1
PC0 PCPU ST CMOS General purpose I/O. Register enabled pull-up.
SSEG19 SLCDC3 — SSEG Software controlled LCD segment output
OSC1 CO HXT — HXT oscillator pin
PC1/SSEG20/
OSC2
PC1 PCPU ST CMOS General purpose I/O. Register enabled pull-up.
SSEG20 SLCDC3 — SSEG Software controlled LCD segment output
OSC2 CO — HXT HXT oscillator pin
PC2/[SDO]/SSEG0/
SCOM0
PC2 PCPU ST CMOS General purpose I/O. Register enabled pull-up.
[SDO]
SIMC0
IFS
— CMOS SPI data output
SSEG0
SLCDC0
SLCDC1
— SSEG Software controlled LCD segment output
SCOM0
SLCDC0
SLCDC1
— SCOM Software controlled LCD common output