HT68F03M/HT68F04M/HT66F03M/HT66F04M
HT66F03M
Pin Name
Function
OP
I/T
O/T
Pin-Shared Mapping
PAWU
PAPU
PA0~PA7 Port A
ST
CMOS
¾
AN0~AN3 A/D converter input
ACERL
ADCR1
AN
AN
AN
AN
PA0~PA3
PA1
¾
¾
¾
¾
VREF
C-
A/D converter reference input
Comparator input
Comparator input
Comparator output
TM0 input
PA1
C+
CPC
PA0
CX
CMOS PA2
¾
ST
TCK0
TCK1
TP0
PRM
PRM
PRM
PRM
¾
PA4, PA6 or PA7
PA3 or PA7
¾
¾
TM1 input
ST
TM0 I/O
ST
CMOS PA3, PA5 or PA2
CMOS PA4, PA6 or PA7
TP1
TM1 I/O
ST
INT
External interrupt
HXT/ERC/LXT pin
HXT/LXT pin
ST
PA3 or PA7
PA6
¾
¾
OSC1
OSC2
RES
VDD
AVDD
VSS
AVSS
LX
CO
HXT/LXT
CO
HXT/LXT PA5
¾
Reset input
CO
ST
PA7
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
MCU power supply
A/D converter power supply *
MCU ground
PWR
PWR
PWR
PWR
PWR
PWR
NS
¾
¾
¾
A/D converter ground **
Switching input pin
DC-DC converter output pin
DC-DC converter chip enable, active high
Ground
¾
¾
¾
¾
¾
VOUT
CE
GND
NC
PWR
¾
Not connected
Note: I/T: Input type
O/T: Output type
OP: Optional by configuration option (CO) or register option
PWR: Power
CO: Configuration option
ST: Schmitt Trigger input
NS: non-standard input
CMOS: CMOS output
NMOS: NMOS output
SCOM: Software controlled LCD COM
AN: Analog input pin
HXT: High frequency crystal oscillator
LXT: Low frequency crystal oscillator
*: VDD is the device power supply while AVDD is the ADC power supply. The AVDD pin is bonded together
internally with VDD.
**: VSS is the device ground pin while AVSS is the ADC ground pin. The AVSS pin is bonded together internally
with VSS.
Rev. 1.10
5
May 24, 2010