HT66F20 datasheet(192/298 Pages) HOLTEK

192 / 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

SC K (C KP OL B= 1)

SC K (C KP OL B= 0)

SD O

SC S

SD I Da ta C apt ur e

D7 /D 0D 6/ D1

D5 /D 2D 4/ D3 D3 /D 4D 2/ D5

D1 /D 6D 0/ D7

Wr it e to S IM D

(S DO c hanges a s s oon as w ri ti ng o ccu rs ; S DO i s fl oa ti ng if S CS =1 )

No te :F or S PI s la ve m ode, i f SI M EN =1 a nd CS EN =0 , SP I is a lw a ys enabl ed

and ig nor es t he SC S le ve l.

SPI Slave Mode Timing – CKEG=1

SI ME N =1

Wr it e Da ta

in to S IM D

WC OL =1 ?

Cl ea r WC OL

Tr an sm i ssi on

co mp le te d ?

(T RF =1 ? )

Re ad D at a

fr om S IM D

Cl ea r TR F

Tr an sf er

F in is hed?

EN D

ma st er o r

sl av e

Ma st er

Sl av e

SPI t ra ns fe r

Co nf ig ur e C KPO LB ,

C KEG , C SEN a nd M LS

SI M[ 2: 0] =0 00 ,

001, 010, 011 o r 100

SI M[ 2: 0] =1 01

SPI Transfer Control Flowchart

HT66F20 Datasheet(PDF) 192 Page - Holtek Semiconductor Inc

HT66F20 Datasheet(HTML) 192 Page - Holtek Semiconductor Inc

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