- 您現(xiàn)在的位置：買賣IC網 > PDF目錄25624 > MR80C32E-20 (ATMEL CORP) 8-BIT, 20 MHz, MICROCONTROLLER, CQCC44 PDF資料下載
參數(shù)資料
| 型號： | MR80C32E-20 |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, 20 MHz, MICROCONTROLLER, CQCC44 |
| 封裝： | LCC-44 |
| 文件頁數(shù)： | 27/32頁 |
| 文件大?。?/td> | 3152K |
| 代理商： | MR80C32E-20 |
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頁當前第27頁第28頁第29頁第30頁第31頁第32頁
85
Atmel ATmega16/32/64/M1/C1 [DATASHEET]
7647K–AVR–12/13
The extreme values for the OCR0A register represent special cases when generating a PWM waveform output in the phase
correct PWM mode. If the OCR0A is set equal to BOTTOM, the output will be continuously low and if set equal to MAX the
output will be continuously high for non-inverted PWM mode. For inverted PWM the output will have the opposite logic values.
At the very start of period 2 in Figure 12-7 OCnx has a transition from high to low even though there is no compare match. The
point of this transition is to guarantee symmetry around BOTTOM. There are two cases that give a transition without compare
match.
●
OCRnx changes its value from MAX, like in Figure 12-7. When the OCR0A value is MAX the OCn pin value is the same
as the result of a down-counting compare match. To ensure symmetry around BOTTOM the OCnx value at MAX must
correspond to the result of an up-counting compare match.
●
The timer starts counting from a value higher than the one in OCRnx, and for that reason misses the compare match and
hence the OCnx change that would have happened on the way up.
12.7
Timer/Counter Timing Diagrams
The Timer/Counter is a synchronous design and the timer clock (clkT0) is therefore shown as a clock enable signal in the
following figures. The figures include information on when interrupt flags are set. Figure 12-8 contains timing data for basic
Timer/Counter operation. The figure shows the count sequence close to the MAX value in all modes other than phase correct
PWM mode.
Figure 12-8. Timer/Counter Timing Diagram, no Prescaling
Figure 12-9 shows the same timing data, but with the prescaler enabled.
Figure 12-9. Timer/Counter Timing Diagram, with Prescaler (fclk_I/O/8)
MAX - 1
clkI/O
(clkI/O/1)
TCNTn
TOVn
clkTn
MAX
BOTTOM
BOTTOM + 1
MAX - 1
clkI/O
(clkI/O/8)
TCNTn
TOVn
clkTn
MAX
BOTTOM
BOTTOM + 1
相關PDF資料 |
PDF描述 |
|---|---|
| MV80C51T-20D | 8-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP44 |
| MT80C51C-36D | 8-BIT, MROM, 36 MHz, MICROCONTROLLER, PQFP44 |
| MD80C32E-16SCD | 8-BIT, 16 MHz, MICROCONTROLLER, CDIP40 |
| MD80C52CXXX-16P883D | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, CDIP40 |
| MD80C32-20SC | 8-BIT, 20 MHz, MICROCONTROLLER, CDIP40 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MR80C51BH | 制造商:ROCHESTER 制造商全稱:ROCHESTER 功能描述:CMOS SINGLE - CHIP 8-BIT MICROCOMPUTER 64K program Memory Space |
| MR80C86 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor |
| MR80C86/B | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述:Microprocessor, 16 Bit, 44 Pin, Ceramic, LCC |
| MR80C86-2 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor |
| MR80C86-2/883 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復。