HT45F23 データシートの表示（PDF） - Holtek Semiconductor
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HT45F23 Datasheet PDF : 152 Pages
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HT45F23/HT45F43
8-Bit Flash MCU with Op Amps & Comparators
Pin Name
Function OPT
I/T
O/T
Description
PB2/SCK/SCL
PB2
SCK
SCL
PBPU
MISC
¾
¾
ST CMOS General purpose I/O. Register enabled pull-up and
NMOS output NMOS structure.
ST
¾ SPI serial clock
ST NMOS I2C clock
PB3/AN0/SCS
PB3
PBPU
MISC
ST
CMOS General purpose I/O. Register enabled pull-up and
NMOS output NMOS structure.
AN0
ADCR AN
¾ A/D channel 0
SCS
¾
ST
¾ SPI slave select
PB4
PBPU ST CMOS General purpose I/O. Register enabled pull-up
PB4/AN1/AUD/PCLK
AN1
AUD
ADCR AN CMOS A/D channel 1
DACTRL ¾
¾ D/A output pin
PCLK
¾
¾ CMOS Peripheral clock output
PB5
PBPU ST CMOS General purpose I/O. Register enabled pull-up
PB5/AN2/PINT
AN2
ADCR AN
¾ A/D channel 2
PINT
¾
ST
¾ Peripheral interrupt
PB6
PBPU ST CMOS General purpose I/O. Register enabled pull-up
PB6/AN3/RES
AN3
ADCR AN
¾ A/D channel 3
RES
CO
ST
¾ Reset pin
PC0
PCPU ST CMOS General purpose I/O. Register enabled pull-up.
PC0/AN4/OSC1
AN4
ADCR AN
¾ A/D channel 4
OSC1
CO
HXT
¾ HXT/ERC pin
PC1
PCPU ST CMOS General purpose I/O. Register enabled pull-up.
PC1/AN5/OSC2
AN5
ADCR AN
¾ A/D channel 5
OSC2
CO
¾ HXT HXT pin
PC2/XT1
PC2
PCPU ST CMOS General purpose I/O. Register enabled pull-up.
XT1
CO
LXT
¾ LXT pin
PC3/XT2
PC3
PCPU ST CMOS General purpose I/O. Register enabled pull-up.
XT2
CO
¾
LXT LXT pin
PC4
PCPU ST CMOS General purpose I/O. Register enabled pull-up.
PC4/VREF/VCAP/SCOM1
VREF
VCAP
ACSR AN
LDOC ¾
¾ ADC reference input
¾
LDO output capacitor pin. Connect a 0.1mF
capacitor.
SCOM1 LCDC ¾ SCOM Software controlled 1/2 bias LCD COM
PC5
PCPU ST CMOS General purpose I/O. Register enabled pull-up.
PC5/PWM0/C1N/SCOM2
PWM0
C1N
BPCTL ¾ CMOS PWM0 output pin
CMP1C1 CMPI ¾ Comparator 1 inverting input pin
SCOM2 LCDC ¾ SCOM Software controlled 1/2 bias LCD COM
Rev. 1.20
11
September 15, 2011
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