HT66F20 datasheet(21/298 Pages) HOLTEK

21 / 298 page

Rev. 1.90

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Rev. 1.90

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HT66F20/HT66F30/HT66F40/HT66F50/HT66F60

HT66FU30/HT66FU40/HT66FU50/HT66FU60

Enhanced A/D Flash Type 8-Bit MCU with EEPROM

HT66F20/HT66F30/HT66F40/HT66F50/HT66F60

HT66FU30/HT66FU40/HT66FU50/HT66FU60

Enhanced A/D Flash Type 8-Bit MCU with EEPROM

Pin Name

Function

I/T

O/T

Pin-Shared Mapping

INT0� INT1

Ext. Inte��pt 0� 1

PRM1

—

PA�� PA4 o� PC4� PC5 o� PE6� PE7

PINT

Pe�iphe�al Inte��pt

PRM0

—

PC� o� PC4

PCK

Pe�iphe�al Clock o�tp�t

PRM0

—

CMOS PC� o� PC5

SDI

SPI Data inp�t

PRM0

—

PA6 o� PD� o� PB7

SDO

SPI Data o�tp�t

PRM0

—

CMOS PA5 o� PD� o� PB6

SCS

SPI Slave Select

PRM0

CMOS PB5 o� PD0 o� PD7

SCK

SPI Se�ial Clock

PRM0

CMOS PA7 o� PD1 o� PD6

SCL

I�C Clock

PRM0

NMOS PA7 o� PD1 o� PD6

SDA

I�C Data

PRM0

NMOS PA6 o� PD� o� PB7

SCOM0~SCOM� SCOM0~SCOM�

SCOMC

—

SCOM PC0� PC1� PC6� PC7

OSC1

HXT/ERC pin

HXT

—

PB1

OSC�

HXT pin

—

HXT

PB�

XT1

LXT pin

LXT

—

PB�

XT�

LXT pin

—

LXT

PB4

RES

Reset inp�t

—

PB0

VDD

Powe� s�ppl�*

—

PWR

—

AVDD

ADC powe� s�ppl�*

—

PWR

—

VSS

G�o�nd**

—

PWR

—

AVSS

ADC g�o�nd**

—

PWR

—

Note:I/T:Inputtype;

O/T:Outputtype

OP:Optionalbyconfigurationoption(CO)orregisteroption

PWR:Power;

CO:Configurationoption; ST:SchmittTriggerinput

CMOS:CMOSoutput;

NMOS:NMOSoutput

SCOM:SoftwarecontrolledLCDCOM;

AN:Analoginputpin

HXT:Highfrequencycrystaloscillator

LXT:Lowfrequencycrystaloscillator

*:VDDisthedevicepowersupplywhileAVDDistheADCpowersupply.TheAVDDpinisbonded

togetherinternallywithVDD.

**:VSSisthedevicegroundpinwhileAVSSistheADCgroundpin.TheAVSSpinisbondedtogether

internallywithVSS.

AsthePinDescriptionSummarytableappliestothepackagetypewiththemostpins,notalloftheabove

listedpinsmaybepresentonpackagetypeswithsmallernumbersofpins.

HT66F20 Datasheet(PDF) 21 Page - Holtek Semiconductor Inc

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