- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄25626 > MD80C52TXXX-25SCD (ATMEL CORP) 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CDIP40 PDF資料下載
參數(shù)資料
| 型號(hào)： | MD80C52TXXX-25SCD |
| 廠商： | ATMEL CORP |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CDIP40 |
| 封裝： | 0.600 INCH, CERAMIC, DIP-40 |
| 文件頁(yè)數(shù)： | 85/395頁(yè) |
| 文件大?。?/td> | 9022K |
| 代理商： | MD80C52TXXX-25SCD |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)當(dāng)前第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)第182頁(yè)第183頁(yè)第184頁(yè)第185頁(yè)第186頁(yè)第187頁(yè)第188頁(yè)第189頁(yè)第190頁(yè)第191頁(yè)第192頁(yè)第193頁(yè)第194頁(yè)第195頁(yè)第196頁(yè)第197頁(yè)第198頁(yè)第199頁(yè)第200頁(yè)第201頁(yè)第202頁(yè)第203頁(yè)第204頁(yè)第205頁(yè)第206頁(yè)第207頁(yè)第208頁(yè)第209頁(yè)第210頁(yè)第211頁(yè)第212頁(yè)第213頁(yè)第214頁(yè)第215頁(yè)第216頁(yè)第217頁(yè)第218頁(yè)第219頁(yè)第220頁(yè)第221頁(yè)第222頁(yè)第223頁(yè)第224頁(yè)第225頁(yè)第226頁(yè)第227頁(yè)第228頁(yè)第229頁(yè)第230頁(yè)第231頁(yè)第232頁(yè)第233頁(yè)第234頁(yè)第235頁(yè)第236頁(yè)第237頁(yè)第238頁(yè)第239頁(yè)第240頁(yè)第241頁(yè)第242頁(yè)第243頁(yè)第244頁(yè)第245頁(yè)第246頁(yè)第247頁(yè)第248頁(yè)第249頁(yè)第250頁(yè)第251頁(yè)第252頁(yè)第253頁(yè)第254頁(yè)第255頁(yè)第256頁(yè)第257頁(yè)第258頁(yè)第259頁(yè)第260頁(yè)第261頁(yè)第262頁(yè)第263頁(yè)第264頁(yè)第265頁(yè)第266頁(yè)第267頁(yè)第268頁(yè)第269頁(yè)第270頁(yè)第271頁(yè)第272頁(yè)第273頁(yè)第274頁(yè)第275頁(yè)第276頁(yè)第277頁(yè)第278頁(yè)第279頁(yè)第280頁(yè)第281頁(yè)第282頁(yè)第283頁(yè)第284頁(yè)第285頁(yè)第286頁(yè)第287頁(yè)第288頁(yè)第289頁(yè)第290頁(yè)第291頁(yè)第292頁(yè)第293頁(yè)第294頁(yè)第295頁(yè)第296頁(yè)第297頁(yè)第298頁(yè)第299頁(yè)第300頁(yè)第301頁(yè)第302頁(yè)第303頁(yè)第304頁(yè)第305頁(yè)第306頁(yè)第307頁(yè)第308頁(yè)第309頁(yè)第310頁(yè)第311頁(yè)第312頁(yè)第313頁(yè)第314頁(yè)第315頁(yè)第316頁(yè)第317頁(yè)第318頁(yè)第319頁(yè)第320頁(yè)第321頁(yè)第322頁(yè)第323頁(yè)第324頁(yè)第325頁(yè)第326頁(yè)第327頁(yè)第328頁(yè)第329頁(yè)第330頁(yè)第331頁(yè)第332頁(yè)第333頁(yè)第334頁(yè)第335頁(yè)第336頁(yè)第337頁(yè)第338頁(yè)第339頁(yè)第340頁(yè)第341頁(yè)第342頁(yè)第343頁(yè)第344頁(yè)第345頁(yè)第346頁(yè)第347頁(yè)第348頁(yè)第349頁(yè)第350頁(yè)第351頁(yè)第352頁(yè)第353頁(yè)第354頁(yè)第355頁(yè)第356頁(yè)第357頁(yè)第358頁(yè)第359頁(yè)第360頁(yè)第361頁(yè)第362頁(yè)第363頁(yè)第364頁(yè)第365頁(yè)第366頁(yè)第367頁(yè)第368頁(yè)第369頁(yè)第370頁(yè)第371頁(yè)第372頁(yè)第373頁(yè)第374頁(yè)第375頁(yè)第376頁(yè)第377頁(yè)第378頁(yè)第379頁(yè)第380頁(yè)第381頁(yè)第382頁(yè)第383頁(yè)第384頁(yè)第385頁(yè)第386頁(yè)第387頁(yè)第388頁(yè)第389頁(yè)第390頁(yè)第391頁(yè)第392頁(yè)第393頁(yè)第394頁(yè)第395頁(yè)
175
ATmega64A [DATASHEET]
8160D–AVR–02/2013
21.7.3
Receive Compete Flag and Interrupt
The USART Receiver has one flag that indicates the receiver state.
The Receive Complete n (RXCn) flag indicates if there are unread data present in the receive buffer. This flag is
one when unread data exist in the receive buffer, and zero when the receive buffer is empty (that is, does not con-
tain any unread data). If the receiver is disabled (RXENn = 0), the receive buffer will be flushed and consequently
the RXCn bit will become zero.
When the Receive Complete Interrupt Enable n (RXCIEn) in UCSRnB is set, the USART Receive Complete Inter-
rupt will be executed as long as the RXCn flag is set (provided that global interrupts are enabled). When interrupt-
driven data reception is used, the receive complete routine must read the received data from UDRn in order to
clear the RXCn flag, otherwise a new interrupt will occur once the interrupt routine terminates.
21.7.4
Receiver Error Flags
The USART Receiver has three error flags: Frame Error n (FEn), Data OverRun n (DORn) and USART Parity Error
n (UPEn). All can be accessed by reading UCSRnA. Common for the error flags is that they are located in the
receive buffer together with the frame for which they indicate the error status. Due to the buffering of the error flags,
the UCSRnA must be read before the receive buffer (UDRn), since reading the UDRn I/O location changes the buf-
fer read location. Another equality for the error flags is that they can not be altered by software doing a write to the
flag location. However, all flags must be set to zero when the UCSRnA is written for upward compatibility of future
USART implementations. None of the error flags can generate interrupts.
The Frame Error n (FEn) flag indicates the state of the first stop bit of the next readable frame stored in the receive
buffer. The FEn flag is zero when the stop bit was correctly read (as one), and the FEn flag will be one when the
stop bit was incorrect (zero). This flag can be used for detecting out-of-sync conditions, detecting break conditions
and protocol handling. The FEn flag is not affected by the setting of the USBSn bit in UCSRnC since the Receiver
ignores all, except for the first, stop bits. For compatibility with future devices, always set this bit to zero when writ-
ing to UCSRnA.
The Data OverRun n (DORn) flag indicates data loss due to a receiver buffer full condition. A Data OverRun occurs
when the receive buffer is full (two characters), it is a new character waiting in the Receive Shift Register, and a
new start bit is detected. If the DORn flag is set there was one or more serial frame lost between the frame last
read from UDRn, and the next frame read from UDRn. For compatibility with future devices, always write this bit to
zero when writing to UCSRnA. The DORn flag is cleared when the frame received was successfully moved from
the Shift Register to the receive buffer.
The USART Parity Error n (UPEn) flag indicates that the next frame in the receive buffer had a Parity Error when
received. If parity check is not enabled the UPEn bit will always be read zero. For compatibility with future devices,
always set this bit to zero when writing to UCSRnA. For more details see “Parity Bit Calculation” on page 168 and
21.7.5
Parity Checker
The Parity Checker is active when the high USART Parity mode (UPMn1) bit is set. Type of parity check to be per-
formed (odd or even) is selected by the UPMn0 bit. When enabled, the Parity Checker calculates the parity of the
data bits in incoming frames and compares the result with the parity bit from the serial frame. The result of the
check is stored in the receive buffer together with the received data and stop bits. The Parity Error n (UPEn) flag
can then be read by software to check if the frame had a Parity Error.
The UPEn bit is set if the next character that can be read from the receive buffer had a Parity Error when received
and the parity checking was enabled at that point (UPMn1 = 1). This bit is valid until the receive buffer (UDRn) is
read.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MD80C52CXXX-12SHXXX | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, CDIP40 |
| MR80C52XXX-16P883 | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, CQCC44 |
| MF280C51-12R | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP44 |
| M43C505F | 4-BIT, MROM, 2 MHz, MICROCONTROLLER |
| MQ80C32-20/883R | 8-BIT, 20 MHz, MICROCONTROLLER, CQFP44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MD80C86 | 制造商:INTERSIL 制造商全稱(chēng):Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor |
| MD80C862 | 制造商:Intel 功能描述:PROCESSOR:MICRO-PROCESSOR |
| MD80C86-2 | 制造商:INTERSIL 制造商全稱(chēng):Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor |
| MD80C86-2/883 | 制造商:Intersil Corporation 功能描述:MPU 16BIT CMOS 8MHZ 40CDIP - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:CPU 16BILT 5V CMOS 8MHZ 40CDIP - Bulk |
| MD80C86-2/B | 制造商:Intersil Corporation 功能描述:MPU 16BIT CMOS 8MHZ 40CDIP - Rail/Tube |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。