HT66F25D(2012) Просмотр технического описания (PDF) - Holtek Semiconductor
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HT66F25D Datasheet PDF : 177 Pages
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A/D Flash Type 8-bit MCU with EEPROM
HT66F24D/HT66F25D
Pin Descriptions
With the exception of the power pins, all pins on these devices can be referenced by their Port name,
e.g. PA.0, PA.1 etc, which refer to the digital I/O function of the pins. However some of these Port
pins are also shared with other function such as the Analog to Digital Converter, Timer Module pins
etc. 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.
HT66F24D
—
PA0~PA7
PB0~PB5
PC0~PC7
AN0~AN7
VREF
TCK0
TCK1
TP0_0, TP0_1, TP0_2
TP1_0, TP1_1, TP1_2
INT0
INT1
OSC1
OSC2
XT1
XT2
VDD
VSS
Function
Port A
Port B
Port C
A/D Converter input
A/D Converter reference input
TM0 input
TM1 input
TM0 I/O
TM1 I/O
External Interrupt 0
External Interrupt 1
HXT pin
HXT pin
LXT pin
LXT pin
Power supply*
Ground*
OP
PAWU
PAPU
PBPU
PCPU
ACERL
ADCR1
PRM0
PRM0
TMPC0
TMPC0
PRM0
PRM0
CO
CO
CO
CO
—
—
I/T
ST
ST
ST
AN
AN
ST
ST
ST
ST
ST
ST
HXT
—
LXT
—
PWR
PWR
O/T Pin-Shared Mapping
CMOS
—
CMOS
—
CMOS
—
—
PA0~PA2,PB3~PB5,
PB1~PB2
— PA2
— PA6, PC2
— PB0, PC3
CMOS PA3, PA0, PA7
CMOS PA4, PA1, PB1
— PA2, PC0
— PB0, PC1
— PA6
HXT PA5
— PA4
LXT PA3
—
—
—
—
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
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
*: AVDD is the ADC power supply and is bonded together internally with VDD while AVSS is the ADC
ground pin and is bonded together internally with VSS.
Rev. 1.00
10
July 26, 2012
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