- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374691 > SAB-C515-L24M (INFINEON TECHNOLOGIES AG) 8-Bit CMOS Microcontroller PDF資料下載
參數(shù)資料
| 型號(hào)： | SAB-C515-L24M |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-Bit CMOS Microcontroller |
| 中文描述： | 8位CMOS微控制器 |
| 文件頁數(shù)： | 27/55頁 |
| 文件大小： | 268K |
| 代理商： | SAB-C515-L24M |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁當(dāng)前第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁
Semiconductor Group
27
1997-08-01
C515
Timer 2 Operating Modes
The timer 2, which is a 16-bit-wide register, can operate as timer, event counter, or gated timer. A
roll-over of the count value in TL2/TH2 from all 1’s to all 0’s sets the timer overflow flag TF2 in SFR
IRCON, which can generate an interrupt. The bits in register T2CON are used to control the timer
2 operation.
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.
Gated Timer Mode: In gated timer function, the external input pin T2 (P1.7) 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 event counter function. the timer 2 is incremented in response to a 1-
to-0 transition at its corresponding external input pin T2 (P1.7). In this function, the external input is
sampled every machine cycle. 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.
Reload of Timer 2: Two reload modes are selectable:
In mode 0, when timer 2 rolls over from all 1’s to all 0’s, it not only sets TF2 but also causes the timer
2 registers to be loaded with the 16-bit value in the CRC register, which is preset by software.
In mode 1, a 16-bit reload from the CRC register is caused by a negative transition at the correspon-
ding input pin P1.5/T2EX. This transition will also set flag EXF2 if bit EXEN2 in SFR IEN1 has been
set.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAB-C515-LM | 8-Bit CMOS Microcontroller |
| SAF-C515-1R24M | 8-Bit CMOS Microcontroller |
| SAF-C515-1RM | 8-Bit CMOS Microcontroller |
| SAF-C515-L24M | 8-Bit CMOS Microcontroller |
| SAF-C515-LM | 8-Bit CMOS Microcontroller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAB-C515-LM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAB-C517A | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-bit CMOS MICROCONTROLLER |
| SAB-C517A-4R24M | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAB-C517A-4RM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAB-C517A-L24M | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。