23.8.2.2 Setting up and Performing a Transfer Operation of the TWIM is mainly controlled by the Control Register" />
鍙冩暩(sh霉)璩囨枡
鍨嬭櫉锛� ATUC128D4-AUR
寤犲晢锛� Atmel
鏂囦欢闋佹暩(sh霉)锛� 386/755闋�
鏂囦欢澶�?銆�?/td> 0K
鎻忚堪锛� IC MCU 32BIT 128KB FLASH 48TQFP
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 2,500
绯诲垪锛� AVR®32 UC3 D
鏍稿績铏曠悊鍣細 AVR
鑺珨灏哄锛� 32-浣�
閫熷害锛� 48MHz
閫i€氭€э細 I²C锛孲PI锛孶ART/USART锛孶SB
澶栧湇瑷�(sh猫)鍌欙細 娆犲妾㈡脯/寰�(f霉)浣�锛孌MA锛孖²S锛孭OR锛孭WM锛學DT
杓稿叆/杓稿嚭鏁�(sh霉)锛� 35
绋嬪簭瀛樺劜鍣ㄥ閲忥細 128KB锛�128K x 8锛�
绋嬪簭瀛樺劜鍣ㄩ鍨嬶細 闁冨瓨
RAM 瀹归噺锛� 16K x 8
闆诲 - 闆绘簮 (Vcc/Vdd)锛� 1.65 V ~ 3.6 V
鏁�(sh霉)鎿�(j霉)杞�(zhu菐n)鎻涘櫒锛� A/D 6x10b
鎸暕鍣ㄥ瀷锛� 鍏�(n猫i)閮�
宸ヤ綔婧害锛� -40°C ~ 85°C
灏佽/澶栨锛� 48-TQFP
鍖呰锛� 甯跺嵎 (TR)
鍏跺畠鍚嶇ū锛� ATUC128D4-AUR-ND
绗�1闋�绗�2闋�绗�3闋�绗�4闋�绗�5闋�绗�6闋�绗�7闋�绗�8闋�绗�9闋�绗�10闋�绗�11闋�绗�12闋�绗�13闋�绗�14闋�绗�15闋�绗�16闋�绗�17闋�绗�18闋�绗�19闋�绗�20闋�绗�21闋�绗�22闋�绗�23闋�绗�24闋�绗�25闋�绗�26闋�绗�27闋�绗�28闋�绗�29闋�绗�30闋�绗�31闋�绗�32闋�绗�33闋�绗�34闋�绗�35闋�绗�36闋�绗�37闋�绗�38闋�绗�39闋�绗�40闋�绗�41闋�绗�42闋�绗�43闋�绗�44闋�绗�45闋�绗�46闋�绗�47闋�绗�48闋�绗�49闋�绗�50闋�绗�51闋�绗�52闋�绗�53闋�绗�54闋�绗�55闋�绗�56闋�绗�57闋�绗�58闋�绗�59闋�绗�60闋�绗�61闋�绗�62闋�绗�63闋�绗�64闋�绗�65闋�绗�66闋�绗�67闋�绗�68闋�绗�69闋�绗�70闋�绗�71闋�绗�72闋�绗�73闋�绗�74闋�绗�75闋�绗�76闋�绗�77闋�绗�78闋�绗�79闋�绗�80闋�绗�81闋�绗�82闋�绗�83闋�绗�84闋�绗�85闋�绗�86闋�绗�87闋�绗�88闋�绗�89闋�绗�90闋�绗�91闋�绗�92闋�绗�93闋�绗�94闋�绗�95闋�绗�96闋�绗�97闋�绗�98闋�绗�99闋�绗�100闋�绗�101闋�绗�102闋�绗�103闋�绗�104闋�绗�105闋�绗�106闋�绗�107闋�绗�108闋�绗�109闋�绗�110闋�绗�111闋�绗�112闋�绗�113闋�绗�114闋�绗�115闋�绗�116闋�绗�117闋�绗�118闋�绗�119闋�绗�120闋�绗�121闋�绗�122闋�绗�123闋�绗�124闋�绗�125闋�绗�126闋�绗�127闋�绗�128闋�绗�129闋�绗�130闋�绗�131闋�绗�132闋�绗�133闋�绗�134闋�绗�135闋�绗�136闋�绗�137闋�绗�138闋�绗�139闋�绗�140闋�绗�141闋�绗�142闋�绗�143闋�绗�144闋�绗�145闋�绗�146闋�绗�147闋�绗�148闋�绗�149闋�绗�150闋�绗�151闋�绗�152闋�绗�153闋�绗�154闋�绗�155闋�绗�156闋�绗�157闋�绗�158闋�绗�159闋�绗�160闋�绗�161闋�绗�162闋�绗�163闋�绗�164闋�绗�165闋�绗�166闋�绗�167闋�绗�168闋�绗�169闋�绗�170闋�绗�171闋�绗�172闋�绗�173闋�绗�174闋�绗�175闋�绗�176闋�绗�177闋�绗�178闋�绗�179闋�绗�180闋�绗�181闋�绗�182闋�绗�183闋�绗�184闋�绗�185闋�绗�186闋�绗�187闋�绗�188闋�绗�189闋�绗�190闋�绗�191闋�绗�192闋�绗�193闋�绗�194闋�绗�195闋�绗�196闋�绗�197闋�绗�198闋�绗�199闋�绗�200闋�绗�201闋�绗�202闋�绗�203闋�绗�204闋�绗�205闋�绗�206闋�绗�207闋�绗�208闋�绗�209闋�绗�210闋�绗�211闋�绗�212闋�绗�213闋�绗�214闋�绗�215闋�绗�216闋�绗�217闋�绗�218闋�绗�219闋�绗�220闋�绗�221闋�绗�222闋�绗�223闋�绗�224闋�绗�225闋�绗�226闋�绗�227闋�绗�228闋�绗�229闋�绗�230闋�绗�231闋�绗�232闋�绗�233闋�绗�234闋�绗�235闋�绗�236闋�绗�237闋�绗�238闋�绗�239闋�绗�240闋�绗�241闋�绗�242闋�绗�243闋�绗�244闋�绗�245闋�绗�246闋�绗�247闋�绗�248闋�绗�249闋�绗�250闋�绗�251闋�绗�252闋�绗�253闋�绗�254闋�绗�255闋�绗�256闋�绗�257闋�绗�258闋�绗�259闋�绗�260闋�绗�261闋�绗�262闋�绗�263闋�绗�264闋�绗�265闋�绗�266闋�绗�267闋�绗�268闋�绗�269闋�绗�270闋�绗�271闋�绗�272闋�绗�273闋�绗�274闋�绗�275闋�绗�276闋�绗�277闋�绗�278闋�绗�279闋�绗�280闋�绗�281闋�绗�282闋�绗�283闋�绗�284闋�绗�285闋�绗�286闋�绗�287闋�绗�288闋�绗�289闋�绗�290闋�绗�291闋�绗�292闋�绗�293闋�绗�294闋�绗�295闋�绗�296闋�绗�297闋�绗�298闋�绗�299闋�绗�300闋�绗�301闋�绗�302闋�绗�303闋�绗�304闋�绗�305闋�绗�306闋�绗�307闋�绗�308闋�绗�309闋�绗�310闋�绗�311闋�绗�312闋�绗�313闋�绗�314闋�绗�315闋�绗�316闋�绗�317闋�绗�318闋�绗�319闋�绗�320闋�绗�321闋�绗�322闋�绗�323闋�绗�324闋�绗�325闋�绗�326闋�绗�327闋�绗�328闋�绗�329闋�绗�330闋�绗�331闋�绗�332闋�绗�333闋�绗�334闋�绗�335闋�绗�336闋�绗�337闋�绗�338闋�绗�339闋�绗�340闋�绗�341闋�绗�342闋�绗�343闋�绗�344闋�绗�345闋�绗�346闋�绗�347闋�绗�348闋�绗�349闋�绗�350闋�绗�351闋�绗�352闋�绗�353闋�绗�354闋�绗�355闋�绗�356闋�绗�357闋�绗�358闋�绗�359闋�绗�360闋�绗�361闋�绗�362闋�绗�363闋�绗�364闋�绗�365闋�绗�366闋�绗�367闋�绗�368闋�绗�369闋�绗�370闋�绗�371闋�绗�372闋�绗�373闋�绗�374闋�绗�375闋�绗�376闋�绗�377闋�绗�378闋�绗�379闋�绗�380闋�绗�381闋�绗�382闋�绗�383闋�绗�384闋�绗�385闋�鐣�(d膩ng)鍓嶇386闋�绗�387闋�绗�388闋�绗�389闋�绗�390闋�绗�391闋�绗�392闋�绗�393闋�绗�394闋�绗�395闋�绗�396闋�绗�397闋�绗�398闋�绗�399闋�绗�400闋�绗�401闋�绗�402闋�绗�403闋�绗�404闋�绗�405闋�绗�406闋�绗�407闋�绗�408闋�绗�409闋�绗�410闋�绗�411闋�绗�412闋�绗�413闋�绗�414闋�绗�415闋�绗�416闋�绗�417闋�绗�418闋�绗�419闋�绗�420闋�绗�421闋�绗�422闋�绗�423闋�绗�424闋�绗�425闋�绗�426闋�绗�427闋�绗�428闋�绗�429闋�绗�430闋�绗�431闋�绗�432闋�绗�433闋�绗�434闋�绗�435闋�绗�436闋�绗�437闋�绗�438闋�绗�439闋�绗�440闋�绗�441闋�绗�442闋�绗�443闋�绗�444闋�绗�445闋�绗�446闋�绗�447闋�绗�448闋�绗�449闋�绗�450闋�绗�451闋�绗�452闋�绗�453闋�绗�454闋�绗�455闋�绗�456闋�绗�457闋�绗�458闋�绗�459闋�绗�460闋�绗�461闋�绗�462闋�绗�463闋�绗�464闋�绗�465闋�绗�466闋�绗�467闋�绗�468闋�绗�469闋�绗�470闋�绗�471闋�绗�472闋�绗�473闋�绗�474闋�绗�475闋�绗�476闋�绗�477闋�绗�478闋�绗�479闋�绗�480闋�绗�481闋�绗�482闋�绗�483闋�绗�484闋�绗�485闋�绗�486闋�绗�487闋�绗�488闋�绗�489闋�绗�490闋�绗�491闋�绗�492闋�绗�493闋�绗�494闋�绗�495闋�绗�496闋�绗�497闋�绗�498闋�绗�499闋�绗�500闋�绗�501闋�绗�502闋�绗�503闋�绗�504闋�绗�505闋�绗�506闋�绗�507闋�绗�508闋�绗�509闋�绗�510闋�绗�511闋�绗�512闋�绗�513闋�绗�514闋�绗�515闋�绗�516闋�绗�517闋�绗�518闋�绗�519闋�绗�520闋�绗�521闋�绗�522闋�绗�523闋�绗�524闋�绗�525闋�绗�526闋�绗�527闋�绗�528闋�绗�529闋�绗�530闋�绗�531闋�绗�532闋�绗�533闋�绗�534闋�绗�535闋�绗�536闋�绗�537闋�绗�538闋�绗�539闋�绗�540闋�绗�541闋�绗�542闋�绗�543闋�绗�544闋�绗�545闋�绗�546闋�绗�547闋�绗�548闋�绗�549闋�绗�550闋�绗�551闋�绗�552闋�绗�553闋�绗�554闋�绗�555闋�绗�556闋�绗�557闋�绗�558闋�绗�559闋�绗�560闋�绗�561闋�绗�562闋�绗�563闋�绗�564闋�绗�565闋�绗�566闋�绗�567闋�绗�568闋�绗�569闋�绗�570闋�绗�571闋�绗�572闋�绗�573闋�绗�574闋�绗�575闋�绗�576闋�绗�577闋�绗�578闋�绗�579闋�绗�580闋�绗�581闋�绗�582闋�绗�583闋�绗�584闋�绗�585闋�绗�586闋�绗�587闋�绗�588闋�绗�589闋�绗�590闋�绗�591闋�绗�592闋�绗�593闋�绗�594闋�绗�595闋�绗�596闋�绗�597闋�绗�598闋�绗�599闋�绗�600闋�绗�601闋�绗�602闋�绗�603闋�绗�604闋�绗�605闋�绗�606闋�绗�607闋�绗�608闋�绗�609闋�绗�610闋�绗�611闋�绗�612闋�绗�613闋�绗�614闋�绗�615闋�绗�616闋�绗�617闋�绗�618闋�绗�619闋�绗�620闋�绗�621闋�绗�622闋�绗�623闋�绗�624闋�绗�625闋�绗�626闋�绗�627闋�绗�628闋�绗�629闋�绗�630闋�绗�631闋�绗�632闋�绗�633闋�绗�634闋�绗�635闋�绗�636闋�绗�637闋�绗�638闋�绗�639闋�绗�640闋�绗�641闋�绗�642闋�绗�643闋�绗�644闋�绗�645闋�绗�646闋�绗�647闋�绗�648闋�绗�649闋�绗�650闋�绗�651闋�绗�652闋�绗�653闋�绗�654闋�绗�655闋�绗�656闋�绗�657闋�绗�658闋�绗�659闋�绗�660闋�绗�661闋�绗�662闋�绗�663闋�绗�664闋�绗�665闋�绗�666闋�绗�667闋�绗�668闋�绗�669闋�绗�670闋�绗�671闋�绗�672闋�绗�673闋�绗�674闋�绗�675闋�绗�676闋�绗�677闋�绗�678闋�绗�679闋�绗�680闋�绗�681闋�绗�682闋�绗�683闋�绗�684闋�绗�685闋�绗�686闋�绗�687闋�绗�688闋�绗�689闋�绗�690闋�绗�691闋�绗�692闋�绗�693闋�绗�694闋�绗�695闋�绗�696闋�绗�697闋�绗�698闋�绗�699闋�绗�700闋�绗�701闋�绗�702闋�绗�703闋�绗�704闋�绗�705闋�绗�706闋�绗�707闋�绗�708闋�绗�709闋�绗�710闋�绗�711闋�绗�712闋�绗�713闋�绗�714闋�绗�715闋�绗�716闋�绗�717闋�绗�718闋�绗�719闋�绗�720闋�绗�721闋�绗�722闋�绗�723闋�绗�724闋�绗�725闋�绗�726闋�绗�727闋�绗�728闋�绗�729闋�绗�730闋�绗�731闋�绗�732闋�绗�733闋�绗�734闋�绗�735闋�绗�736闋�绗�737闋�绗�738闋�绗�739闋�绗�740闋�绗�741闋�绗�742闋�绗�743闋�绗�744闋�绗�745闋�绗�746闋�绗�747闋�绗�748闋�绗�749闋�绗�750闋�绗�751闋�绗�752闋�绗�753闋�绗�754闋�绗�755闋�
446
32133D鈥�11/2011
UC3D
23.8.2.2
Setting up and Performing a Transfer
Operation of the TWIM is mainly controlled by the Control Register (CR) and the Command Reg-
ister (CMDR). TWIM status is provided in the Status Register (SR). The following list presents
the main steps in a typical communication:
1. Before any transfers can be performed, bus timings must be configured by writing to
the Clock Waveform Generator Register (CWGR). If operating in SMBus mode, the
SMBus Timing Register (SMBTR) register must also be configured.
2. If the Peripheral DMA Controller is to be used for the transfers, it must be set up.
3. CMDR or NCMDR must be written with a value describing the transfer to be performed.
The interrupt system can be set up to give interrupt requests on specific events or error condi-
tions in the SR, for example when the transfer is complete or if arbitration is lost. The Interrupt
Enable Register (IER) and Interrupt Disable Register (IDR) can be written to specify which bits in
the SR will generate interrupt requests.
The SR.BUSFREE bit is set when activity is completed on the two-wire bus. The SR.CRDY bit is
set when CMDR and/or NCMDR is ready to receive one or more commands.
The controller will refuse to start a new transfer while ANAK, DNAK, or ARBLST in the Status
Register (SR) is one. This is necessary to avoid a race when the software issues a continuation
of the current transfer at the same time as one of these errors happen. Also, if ANAK or DNAK
occurs, a STOP condition is sent automatically. The user will have to restart the transmission by
clearing the error bits in SR after resolving the cause for the NACK.
After a data or address NACK from the slave, a STOP will be transmitted automatically. Note
that the VALID bit in CMDR is NOT cleared in this case. If this transfer is to be discarded, the
VALID bit can be cleared manually allowing any command in NCMDR to be copied into CMDR.
When a data or address NACK is returned by the slave while the master is transmitting, it is pos-
sible that new data has already been written to the THR register. This data will be transferred out
as the first data byte of the next transfer. If this behavior is to be avoided, the safest approach is
to perform a software reset of the TWIM.
23.8.3
Master Transmitter Mode
A START condition is transmitted and master transmitter mode is initiated when the bus is free
and CMDR has been written with START=1 and READ=0. START and SADR+W will then be
transmitted. During the address acknowledge clock pulse (9th pulse), the master releases the
data line (HIGH), enabling the slave to pull it down in order to acknowledge the address. The
master polls the data line during this clock pulse and sets the Address Not Acknowledged bit
(ANAK
) in the Status Register if no slave acknowledges the address.
After the address phase, the following is repeated:
while (NBYTES>0)
1. Wait until THR contains a valid data byte, stretching low period of TWCK. SR.TXRDY
indicates the state of THR. Software or the Peripheral DMA Controller must write the
data byte to THR.
2. Transmit this data byte
3. Decrement NBYTES
4. If (NBYTES==0) and STOP=1, transmit STOP condition
Writing CMDR with START=STOP=1 and NBYTES=0 will generate a transmission with no data
bytes, ie START, SADR+W, STOP.
鐩搁棞(gu膩n)PDF璩囨枡
PDF鎻忚堪
VI-B72-IW-F2 CONVERTER MOD DC/DC 15V 100W
V24C12H150B2 CONVERTER MOD DC/DC 12V 150W
VI-B71-IX-F3 CONVERTER MOD DC/DC 12V 75W
VI-B71-IX-F2 CONVERTER MOD DC/DC 12V 75W
VI-B71-IX-F1 CONVERTER MOD DC/DC 12V 75W
鐩搁棞(gu膩n)浠g悊鍟�/鎶€琛�(sh霉)鍙冩暩(sh霉)
鍙冩暩(sh霉)鎻忚堪
ATUC128D4-AUT 鍔熻兘鎻忚堪:32浣嶅井鎺у埗鍣� - MCU UC3D4 128KB FL 85C RoHS:鍚� 鍒堕€犲晢:Texas Instruments 鏍稿績:C28x 铏曠悊鍣ㄧ郴鍒�:TMS320F28x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:32 bit 鏈€澶ф檪閻橀牷鐜�:90 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:64 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:26 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:2.97 V to 3.63 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:LQFP-80 瀹夎棰�(f膿ng)鏍�:SMD/SMT
ATUC128D4-Z1UR 鍔熻兘鎻忚堪:32浣嶅井鎺у埗鍣� - MCU UC3D4 128KB FL 85C RoHS:鍚� 鍒堕€犲晢:Texas Instruments 鏍稿績:C28x 铏曠悊鍣ㄧ郴鍒�:TMS320F28x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:32 bit 鏈€澶ф檪閻橀牷鐜�:90 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:64 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:26 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:2.97 V to 3.63 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:LQFP-80 瀹夎棰�(f膿ng)鏍�:SMD/SMT
ATUC128D4-Z1UT 鍔熻兘鎻忚堪:32浣嶅井鎺у埗鍣� - MCU UC3D4 128KB FL 85C RoHS:鍚� 鍒堕€犲晢:Texas Instruments 鏍稿績:C28x 铏曠悊鍣ㄧ郴鍒�:TMS320F28x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:32 bit 鏈€澶ф檪閻橀牷鐜�:90 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:64 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:26 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:2.97 V to 3.63 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:LQFP-80 瀹夎棰�(f膿ng)鏍�:SMD/SMT
ATUC128L3U-AUR 鍔熻兘鎻忚堪:32浣嶅井鎺у埗鍣� - MCU UC3L-128KB Flash 64QFP 85C green T&R RoHS:鍚� 鍒堕€犲晢:Texas Instruments 鏍稿績:C28x 铏曠悊鍣ㄧ郴鍒�:TMS320F28x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:32 bit 鏈€澶ф檪閻橀牷鐜�:90 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:64 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:26 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:2.97 V to 3.63 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:LQFP-80 瀹夎棰�(f膿ng)鏍�:SMD/SMT
ATUC128L3U-AUT 鍔熻兘鎻忚堪:32浣嶅井鎺у埗鍣� - MCU UC3L-128KB Flash 64QFP 85C green TRAY RoHS:鍚� 鍒堕€犲晢:Texas Instruments 鏍稿績:C28x 铏曠悊鍣ㄧ郴鍒�:TMS320F28x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:32 bit 鏈€澶ф檪閻橀牷鐜�:90 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:64 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:26 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:2.97 V to 3.63 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:LQFP-80 瀹夎棰�(f膿ng)鏍�:SMD/SMT