Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

HT66F20 Datasheet(PDF) 179 Page - Holtek Semiconductor Inc

Part # HT66F20
Description  Enhanced A/D Flash Type 8-Bit MCU with EEPROM
PDF  298 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT66F20 Datasheet(HTML) 179 Page - Holtek Semiconductor Inc

Back Button HT66F20 Datasheet HTML 175Page - Holtek Semiconductor Inc HT66F20 Datasheet HTML 176Page - Holtek Semiconductor Inc HT66F20 Datasheet HTML 177Page - Holtek Semiconductor Inc HT66F20 Datasheet HTML 178Page - Holtek Semiconductor Inc HT66F20 Datasheet HTML 179Page - Holtek Semiconductor Inc HT66F20 Datasheet HTML 180Page - Holtek Semiconductor Inc HT66F20 Datasheet HTML 181Page - Holtek Semiconductor Inc HT66F20 Datasheet HTML 182Page - Holtek Semiconductor Inc HT66F20 Datasheet HTML 183Page - Holtek Semiconductor Inc Next Button
Zoom Inzoom in Zoom Outzoom out
 179 / 298 page
background image
Rev. 1.90
178
�e���a�� 18� �01�
Rev. 1.90
179
�e���a�� 18� �01�
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
Programming Considerations
DuringmicrocontrolleroperationswheretheA/Dconverterisnotbeingused,theA/Dinternal
circuitrycanbeswitchedofftoreducepowerconsumption,bysettingbitADOFFhighinthe
ADCR0register.Whenthishappens,theinternalA/Dconvertercircuitswillnotconsumepower
irrespectiveofwhatanalogvoltageisappliedtotheirinputlines.IftheA/Dconverterinputlinesare
usedasnormalI/Os,thencaremustbetakenasiftheinputvoltageisnotatavalidlogiclevel,then
thismayleadtosomeincreaseinpowerconsumption.
A/D Transfer Function
Asthedevicescontaina12-bitA/Dconverter,itsfull-scaleconverteddigitisedvalueisequalto
FFFH.Sincethefull-scaleanaloginputvalueisequaltotheVDDorVREFvoltage,thisgivesasingle
bitanaloginputvalueofVDDorVREFdividedby4096.
1LSB=(VDDorVREF)÷4096
TheA/DConverterinputvoltagevaluecanbecalculatedusingthefollowingequation:
A/Dinputvoltage=A/Doutputdigitalvalue×(VDDorVREF)÷4096
Thediagramshowstheidealtransferfunctionbetweentheanaloginputvalueandthedigitised
outputvaluefortheA/Dconverter.Exceptforthedigitisedzerovalue,thesubsequentdigitised
valueswillchangeatapoint0.5LSBbelowwheretheywouldchangewithouttheoffset,andthe
lastfullscaledigitisedvaluewillchangeatapoint1.5LSBbelowtheVDDorVREFlevel.
FF EH
(
)
A/ D C onv er si on
Re su lt
FFFH
FF DH
03H
02H
01H
0. 5 LS B
0
12
3
409 3 4094 4095 409 6
A nal og In pu t Vo lt age
1. 5 LS B
V DD or V RE F
409 6
Ideal A/D Transfer Function



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com