HT66F20 datasheet(99/298 Pages) HOLTEK

99 / 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

I/O Pin Structures

TheaccompanyingdiagramsillustratetheinternalstructuresofsomegenericI/Opintypes.As

theexactlogicalconstructionoftheI/Opinwilldifferfromthesedrawings,theyaresuppliedasa

guideonlytoassistwiththefunctionalunderstandingoftheI/Opins.Thewiderangeofpin-shared

structuresdoesnotpermitalltypestobeshown.

V DD

Wa ke - up Se le ct

S yst em W ak e- up

Re ad D at a Re gi st er

C ont ro l Bi t

Da ta B us

Wr it e C ont ro l R egi st er

Ch ip R es et

Re ad C on tr ol R egi st er

Wr it e Da ta R egi st er

Da ta B it

I/O p in

PA o nl y

We ak

Pu ll- up

Pu ll -H ig h

R egi st er

Se le ct

Generic Input/Output Structure

V DD

R ead Da ta R egi st er

C ont ro l Bi t

Da ta B us

Wr it e C ont ro l R egi st er

Ch ip R es et

R ead Co nt ro l Re gi st er

Wr it e Da ta R egi st er

Da ta B it

A/ D I nput P or t

AC S3 ~A CS 0

To A /D C onv er te r

We ak

Pu ll- up

A nal og

I npu t

Se le ct or

Pu ll -H ig h

R egi st er

Se le ct

A/D Input/Output Structure

HT66F20 Datasheet(PDF) 99 Page - Holtek Semiconductor Inc

HT66F20 Datasheet(HTML) 99 Page - Holtek Semiconductor Inc

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