HT45R2K-C/-B/-A
Dual Slope 16K/8K/4K ASSP MCU for Body Fat Scale
Pin Name
Function
PA5
OPT
I/T
ST C�OS General purpose I/O. Register enabled pull-up and wake-up.
HXT HXT pin
ST C�OS General purpose I/O. Register enabled pull-up and wake-up.
O/T
Description
PAPU
PAWK
PA5/OSC2
OSC2
PA6
CO
—
PAPU
PAWK
PA6/OSC1
OSC1
PA7
RES
PB0
TK1
PB1
TK2
PB2
TKꢁ
PBꢁ
TK4
PB4
CO
HXT
ST N�OS General purpose I/O. Register enabled wake-up.
ST Reset input
ST C�OS General purpose I/O. Register enabled pull-up.
Touch keꢀ 1 input
ST C�OS General purpose I/O. Register enabled pull-up.
Touch keꢀ 2 input
ST C�OS General purpose I/O. Register enabled pull-up.
Touch keꢀ ꢁ input
ST C�OS General purpose I/O. Register enabled pull-up.
Touch keꢀ 4 input
ST C�OS General purpose I/O. Register enabled pull-up.
—
HXT/ERC pin
PAWK
CO
PA7/RES
PB0/TK1
PB1/TK2
PB2/TKꢁ
PBꢁ/TK4
—
PBPU
TK�0C1
PBPU
—
—
TK�0C1
PBPU
—
—
TK�0C1
PBPU
—
—
TK�0C1
PBPU
—
—
PB4/INT
CTRL1
INTC0
INT
ST
—
External interrupt input
PB5
T�R0
PC0
PBPU
T�R0C
PCPU
ST C�OS General purpose I/O. Register enabled pull-up.
ST External Timer 0 clock input
ST C�OS General purpose I/O. Register enabled pull-up.
PB5/T�R0
—
PC0/T�R1/
SEG0
T�R1
SEG0
PC1
T�R1C
LCDOUT
PCPU
ST
—
—
External Timer 1 clock input
C�OS LCD segment output
ST C�OS General purpose I/O. Register enabled pull-up.
PC1/T�R2/
SEG1
T�R2
SEG1
PC2
T�R2C
LCDOUT
PCPU
ST
—
—
External Timer 2 clock input
C�OS LCD segment output
ST C�OS General purpose I/O. Register enabled pull-up.
C�OS LCD segment output
ST C�OS General purpose I/O. Register enabled pull-up.
C�OS LCD segment output
ST C�OS General purpose I/O. Register enabled pull-up.
C�OS LCD segment output
ST C�OS General purpose I/O. Register enabled pull-up.
C�OS LCD segment output
ST C�OS General purpose I/O. Register enabled pull-up.
C�OS LCD segment output
ST C�OS General purpose I/O. Register enabled pull-up.
PC2/SEG2
PCꢁ/SEGꢁ
PC4/SEG4
PC5/SEG5
PC6/SEG6
PC7/SEG7
SEG2
PCꢁ
LCDOUT
PCPU
—
SEGꢁ
PC4
LCDOUT
PCPU
—
SEG4
PC5
LCDOUT
PCPU
—
SEG5
PC6
LCDOUT
PCPU
—
SEG6
PC7
LCDOUT
PCPU
—
SEG7
SEGn
CO�n
CO�4
SEG27
LCDOUT
—
—
—
—
C�OS LCD segment output
C�OS LCD segment outputs
C�OS LCD common outputs
SEG8~SEG2ꢁ
CO�0~CO�ꢁ
—
LCD common output
C�OS
CO�4/SEG27
LCDC
—
LCD segment output
Rev. 1.20
8
�aꢀ ꢁ0ꢂ 201ꢁ
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
