Rev. 1.00
10
September 11, 2018
Rev. 1.00
11
September 11, 2018
HT45F4050
A/D NFC Flash MCU
HT45F4050
A/D NFC Flash MCU
Pin Name
Function
OPT
I/T
O/T
Description
PA2/ICPCK/
OCDSCK
PA2
PAPU
PAWU
PAS0
ST
CMOS General purpose I/O. Register enabled pull-high and
wake-up.
ICPCK
—
ST
—
ICP Clock pin
OCDSCK
—
ST
—
OCDS Clock pin, for EV chip only
PA3/INT1/SDO
PA3
PAPU
PAWU
PAS0
ST
CMOS General purpose I/O. Register enabled pull-high and
wake-up.
INT1
PAS0
INTEG
INTC2
IFS1
ST
—
External Interrupt 1
SDO
PAS0
—
CMOS SPI data output
PA4/SDI/SDA
PA4
PAPU
PAWU
PAS1
ST
CMOS General purpose I/O. Register enabled pull-high and
wake-up.
SDI
PAS1
IFS0
ST
—
SPI data input
SDA
PAS1
IFS0
ST
NMOS I
2
C data line
PA5/SCK/SCL
PA5
PAPU
PAWU
PAS1
ST
CMOS General purpose I/O. Register enabled pull-high and
wake-up.
SCK
PAS1
IFS0
ST
CMOS SPI serial Clock
SCL
PAS1
IFS0
ST
NMOS I
2
C clock line
PA6/INT0/RX
PA6
PAPU
PAWU
PAS1
ST
CMOS General purpose I/O. Register enabled pull-high and
wake-up.
INT0
PAS1
INTEG
INTC0
IFS1
ST
—
External Interrupt 0
RX
PAS1
ST
—
UART RX serial data input
PA7/INT1/TX
PA7
PAPU
PAWU
PAS1
ST
CMOS General purpose I/O. Register enabled pull-high and
wake-up.
INT1
PAS1
INTEG
INTC2
IFS1
ST
—
External Interrupt 1
TX
PAS1
—
CMOS UART TX serial data output
PB0/CX
PB0
PBPU
PBS0
ST
CMOS General purpose I/O. Register enabled pull-high.
CX
PBS0
—
CMOS Comparator output
PB1/PTPI/PTP
PB1
PBPU
PBS0
ST
CMOS General purpose I/O. Register enabled pull-high.
PTPI
PBS0
IFS0
ST
—
PTM capture input
PTP
PBS0
—
CMOS PTM output