Rev. 1.00
10
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Rev. 1.00
11
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HT66FM5440
Brushless DC Motor A/D Flash MCU
HT66FM5440
Brushless DC Motor A/D Flash MCU
Pin Description
The function of each pin is listed in the following table, however the details behind how each pin is
configured is contained in other sections of the datasheet.
Pin Name
Function
OPT
I/T
O/T
Description
PA0/SDA/RX/
ICPDA/OCDSDA
PA0
PAPU
PAWU
PAPS0
ST
CMOS General p�rpose I/O. Register enabled p�ll-�p
and wake-�p
SDA
PAPS0
PRM
ST
NMOS I
�
C data/address line
RX
PAPS0
PRM
ST
—
External UART RX serial data inp�t pin
ICPDA
—
ST
CMOS ICP data/address pin
OCDSDA
—
ST
CMOS OCDS data/address pin� for EV chip only.
PA1/TCK�/AP/AN3
PA1
PAPU
PAWU
PAS0
ST
CMOS General p�rpose I/O. Register enabled p�ll-�p
and wake-�p
TCK�
PAPS0
ST
—
PTM� clock inp�t
AP
PAPS0
AN
—
Operational Amplifier 0 positive input
AN3
PAPS0
AN
—
A/D Converter external inp�t 3
PA�/SCL/TX/
ICPCK/OCDSCK
PA�
PAPU
PAWU
PAPS0
ST
CMOS General p�rpose I/O. Register enabled p�ll-�p
and wake-�p
SCL
PAPS0
PRM
ST
—
I
�
C clock line
TX
PAPS0
PRM
—
CMOS External UART TX serial data o�tp�t pin
ICPCK
—
ST
—
ICP clock pin
OCDSCK
—
ST
—
OCDS clock pin� for EV chip only
PA3/C1P/H1/TCK1
PA3
PAPU
PAWU
PAPS0
ST
CMOS General p�rpose I/O. Register enabled p�ll-�p
and wake-�p
C1P
PAPS0
AN
—
Comparator 1 positive intp�t
H1
PAPS0
ST
—
Hall sensor inp�t
TCK1
PAPS0
ST
—
PTM1 clock inp�t
PA4/C�P/H�/C1N
PA4
PAPU
PAWU
PAPS1
ST
CMOS General p�rpose I/O. Register enabled p�ll-�p
and wake-�p
C�P
PAPS1
AN
—
Comparator � positive intp�t
H�
PAPS1
ST
—
Hall sensor inp�t
C1N
PAPS1
PRM
AN
—
Comparator 1 negative inp�t
PA5/C3P/H3
PA5
PAPU
PAWU
PAPS1
ST
CMOS General p�rpose I/O. Register enabled p�ll-�p
and wake-�p
C3P
PAPS1
AN
—
Comparator 3 positive intp�t
H3
PAPS1
ST
—
Hall sensor inp�t
PA6/OPA1O/
C1N/AN�
PA6
PAPU
PAWU
PAPS1
ST
CMOS General p�rpose I/O. Register enabled p�ll-�p
and wake-�p
OPA1O
PAPS1
—
AN
Operational Amplifier 1 output
C1N
PAPS1
PRM
AN
—
Comparator 1 negative inp�t
AN�
PAPS1
AN
—
A/D Converter external inp�t �