công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

Preview PDF HTML

HT24LC02A bảng dữ liệu(PDF) 5 Page - Holtek Semiconductor Inc

tên linh kiện HT24LC02A
Giải thích chi tiết về linh kiện  CMOS 2K 2-Wire Serial EEPROM
PDF  10 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  HOLTEK [Holtek Semiconductor Inc]
Trang chủ  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT24LC02A bảng dữ liệu(HTML) 5 Page - Holtek Semiconductor Inc

  HT24LC02A_14 Datasheet HTML 1Page - Holtek Semiconductor Inc HT24LC02A_14 Datasheet HTML 2Page - Holtek Semiconductor Inc HT24LC02A_14 Datasheet HTML 3Page - Holtek Semiconductor Inc HT24LC02A_14 Datasheet HTML 4Page - Holtek Semiconductor Inc HT24LC02A_14 Datasheet HTML 5Page - Holtek Semiconductor Inc HT24LC02A_14 Datasheet HTML 6Page - Holtek Semiconductor Inc HT24LC02A_14 Datasheet HTML 7Page - Holtek Semiconductor Inc HT24LC02A_14 Datasheet HTML 8Page - Holtek Semiconductor Inc HT24LC02A_14 Datasheet HTML 9Page - Holtek Semiconductor Inc Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 10 page
background image
Rev. 1.10
5
January 16, 2014
HT24LC02A
• Pagewrite
The2KEEPROMiscapableofan8-bytepage
write.Apagewriteisinitiatedthesameasbyte
write,butthemicrocontrollerdoesnotsenda
stopconditionafterthefirstdatawordisclocked
in.Instead,aftertheEEPROMacknowledgesthe
receiptofthefirstdataword,themicrocontroller
cantransmituptosevenmoredatawords.The
EEPROMwillrespondwithazeroaftereachdata
wordreceived.Themicrocontrollermustterminate
thepagewritesequencewithastopcondition.
Thedatawordaddresslowerthree(2K)bitsare
internallyincrementedfollowingthereceiptof
eachdataword.Thehigherdatawordaddressbits
arenotincremented,retainingthememorypage
rowlocation(refertoPagewritetiming).
• Acknowledgepolling
Tomaximisebusthroughput,onetechniqueisto
allowthemastertopollforanacknowledgesignal
afterthestartconditionandthecontrolbytefor
awritecommandhavebeensent.Ifthedeviceis
stillbusyimplementingitswritecycle,thenno
ACKwillbereturned.Themastercansendthe
nextread/writecommandwhentheACKsignal
hasfinallybeenreceived.
Se nd Wr it e Co mm an d
Se nd S to p Co nd it io n
to In it ia te W ri te C yc le
Se nd St ar t
Se nd C ont ro l By te
wi th R /W =0
(A CK =0 )?
Ne x t O per at io n
No
Ye s
Acknowledge Polling Flow
• Writeprotect
TheHT24LC02Ahasawrite-protectfunctionand
programmingwillthenbeinhibitedwhentheWP
pinisconnectedtoVCC.Underthismode,the
HT24LC02AisusedasaserialROM.
• Readoperations
TheHT24LC02Asupportsthreereadoperations,
namely,currentaddressread,randomaddress
readandsequentialread.Duringreadoperation
execution,theread/writeselectbitshouldbesetto
"1".
• Currentaddressread
Theinternaldatawordaddresscountermaintains
thelastaddressaccessedduringthelastreador
writeoperation,incrementedbyone.Thisaddress
staysvalidbetweenoperationsaslongasthechip
powerismaintained.Theaddressrolloverduring
readfromthelastbyteofthelastmemorypageto
thefirstbyteofthefirstpage.Theaddressrollover
duringwritefromthelastbyteofthecurrentpage
tothefirstbyteofthesamepage.Oncethedevice
addresswiththeread/writeselectbitsettooneis
clockedinandacknowledgedbytheEEPROM,
thecurrentaddressdatawordisseriallyclocked
out.ThemicrocontrollershouldrespondaNo
ACK(High)signalandfollowingstopcondition
(refertoCurrentreadtiming).
• Randomread
A random read requires a dummy byte write
sequencetoloadinthedatawordaddresswhich
is then clocked in and acknowledged by the
EEPROM.Themicrocontrollermustthengenerate
another start condition.The microcontroller
nowinitiatesacurrentaddressreadbysending
adeviceaddresswiththeread/writeselectbit
high.TheEEPROMacknowledgesthedevice
addressandseriallyclocksoutthedataword.The
microcontrollershouldrespondwitha"noACK"
signal(high)followedbyastopcondition.(refer
toRandomreadtiming).
• Sequentialread
Sequentialreadsareinitiatedbyeitheracurrent
addressreadorarandomaddressread.Afterthe
microcontrollerreceivesadataword,itresponds
withanacknowledgment.AslongastheEEPROM
receivesanacknowledgment,itwillcontinueto
incrementthedatawordaddressandseriallyclock
outsequentialdatawords.Whenthememory
addresslimitisreached,thedatawordaddresswill
rolloverandthesequentialreadcontinues.The
sequentialreadoperationisterminatedwhenthe
microcontrollerrespondswitha"noACK"signal
(high)followedbyastopcondition.



Html Pages

1 2 3 4 5 6 7 8 9 10


bảng dữ liệu tải về

Go To PDF Page


Link URL



Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Liên kết đến bảng dữ liệu    |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
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