- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄98076 > SAH-C515A-4R (INFINEON TECHNOLOGIES AG) 8-BIT, MROM, 24 MHz, MICROCONTROLLER, PQFP80 PDF資料下載
參數(shù)資料
| 型號(hào)： | SAH-C515A-4R |
| 廠(chǎng)商： | INFINEON TECHNOLOGIES AG |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 24 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | METRIC, PLASTIC, QFP-80 |
| 文件頁(yè)數(shù)： | 162/182頁(yè) |
| 文件大?。?/td> | 1917K |
| 代理商： | SAH-C515A-4R |
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)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)當(dāng)前第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)
Semiconductor Group
6-29
1997-08-01
On-Chip Peripheral Components
C515A
6.2.2.2
Timer 2 Operation
The timer 2, which is a 16-bit-wide register, can operate as timer, event counter, or gated timer. The
detailed operation is described below.
Timer Mode
In timer function, the count rate is derived from the oscillator frequency. A prescaler offers the
possibility of selecting a count rate of 1/12 or 1/24 of the oscillator frequency. Thus, the 16-bit timer
register (consisting of TH2 and TL2) is either incremented in every machine cycle or in every second
machine cycle. The prescaler is selected by bit T2PS in special function register T2CON. lf T2PS is
cleared, the input frequency is 1/12 of the oscillator frequency. if T2PS is set, the 2:1 prescaler gates
1/24 of the oscillator frequency to the timer.
Gated Timer Mode
In gated timer function, the external input pin P1.7 / T2 functions as a gate to the input of timer 2. lf
T2 is high, the internal clock input is gated to the timer. T2 = 0 stops the counting procedure. This
facilitates pulse width measurements. The external gate signal is sampled once every machine
cycle.
Event Counter Mode
In the counter function, the timer 2 is incremented in response to a 1-to-0 transition at its
corresponding external input pin P1.7 / T2 In this function, the external input is sampled every
machine cycle. When the sampled inputs show a high in one cycle and a low in the next cycle, the
count is incremented. The new count value appears in the timer register in the cycle following the
one in which the transition was detected. Since it takes two machine cycles (24 oscillator periods)
to recognize a 1-to-0 transition, the maximum count rate is 1/24 of the oscillator frequency. There
are no restrictions on the duty cycle of the external input signal, but to ensure that a given level is
sampled at least once before it changes, it must be held for at least one full machine cycle.
Note: The prescaler must be off for proper counter operation of timer 2, i.e. T2PS must be 0.
In either case, no matter whether timer 2 is configured as timer, event counter, or gated timer, a
rolling-over of the count from all 1’s to all 0’s sets the timer overflow flag TF2 in SFR IRCON, which
can generate an interrupt.
lf TF2 is used to generate a timer overflow interrupt, the request flag must be cleared by the interrupt
service routine as it could be necessary to check whether it was the TF2 flag or the external reload
request flag EXF2 which requested the interrupt. Both request flags cause the program to branch to
the same vector address.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAH-C515C-LM | 8-BIT, 10 MHz, MICROCONTROLLER, PQFP80 |
| SAH-XC2210U-8F66R | 32-BIT, FLASH, 66 MHz, RISC MICROCONTROLLER, PDSO38 |
| SAH-XC2387A-104F80L | 16-BIT, FLASH, 80 MHz, RISC MICROCONTROLLER, PQFP144 |
| SAH-XC2387C-200F100L | 32-BIT, FLASH, 100 MHz, RISC MICROCONTROLLER, PQFP144 |
| SAH-XC2387C-136F100L | 32-BIT, FLASH, 100 MHz, RISC MICROCONTROLLER, PQFP144 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAH-C517A | 制造商:INFINEON 制造商全稱(chēng):Infineon Technologies AG 功能描述:8-bit CMOS MICROCONTROLLER |
| SAHC684M50R501 | 制造商:SHARMA 制造商全稱(chēng):Sharma Electro Components,Inc 功能描述:Tantalum Capacitors |
| SAHC685M20R501 | 制造商:SHARMA 制造商全稱(chēng):Sharma Electro Components,Inc 功能描述:Tantalum Capacitors |
| SAHD106M25R501 | 制造商:SHARMA 制造商全稱(chēng):Sharma Electro Components,Inc 功能描述:Tantalum Capacitors |
| SAHD155M50R501 | 制造商:SHARMA 制造商全稱(chēng):Sharma Electro Components,Inc 功能描述:Tantalum Capacitors |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。