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| 型號(hào)： | AT90CAN128-15AT1 |
| 廠商： | Atmel |
| 文件頁(yè)數(shù)： | 36/185頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | MCU AVR 128K FLASH 15MHZ 64TQFP |
| 產(chǎn)品培訓(xùn)模塊： | MCU Product Line Introduction |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 系列： | AVR® 90CAN |
| 核心處理器： | AVR |
| 芯體尺寸： | 8-位 |
| 速度： | 16MHz |
| 連通性： | CAN，I²C，SPI，UART/USART |
| 外圍設(shè)備： | 欠壓檢測(cè)/復(fù)位，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 53 |
| 程序存儲(chǔ)器容量： | 128KB（128K x 8） |
| 程序存儲(chǔ)器類型： | 閃存 |
| EEPROM 大?。?/td> | 4K x 8 |
| RAM 容量： | 4K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 8x10b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 105°C |
| 封裝/外殼： | 64-TQFP |
| 包裝： | 帶卷 (TR) |
| 配用： | ATSTK600-TQFP64-ND - STK600 SOCKET/ADAPTER 64-TQFP ATDVK90CAN1-ND - KIT DEV FOR AT90CAN128 MCU |
| 其它名稱： | AT90CAN128-15AT1-ND AT90CAN128-15AT1TR |
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130
7682C–AUTO–04/08
AT90CAN32/64/128
In fast PWM mode, the compare units allow generation of PWM waveforms on the OCnx pins.
Setting the COMnx1:0 bits to two will produce a non-inverted PWM and an inverted PWM output
can be generated by setting the COMnx1:0 to three (see Table on page 136). The actual OCnx
value will only be visible on the port pin if the data direction for the port pin is set as output
(DDR_OCnx). The PWM waveform is generated by setting (or clearing) the OCnx Register at
the compare match between OCRnx and TCNTn, and clearing (or setting) the OCnx Register at
the timer clock cycle the counter is cleared (changes from TOP to BOTTOM).
The PWM frequency for the output can be calculated by the following equation:
The N variable represents the prescaler divider (1, 8, 64, 256, or 1024).
The extreme values for the OCRnx Register represents special cases when generating a PWM
waveform output in the fast PWM mode. If the OCRnx is set equal to BOTTOM (0x0000) the out-
put will be a narrow spike for each TOP+1 timer clock cycle. Setting the OCRnx equal to TOP
will result in a constant high or low output (depending on the polarity of the output set by the
COMnx1:0 bits.)
A frequency (with 50% duty cycle) waveform output in fast PWM mode can be achieved by set-
ting OCnA to toggle its logical level on each compare match (COMnA1:0 = 1). The waveform
generated will have a maximum frequency of fOCnA = fclk_I/O/2 when OCRnA is set to zero
(0x0000). This feature is similar to the OCnA toggle in CTC mode, except the double buffer fea-
ture of the Output Compare unit is enabled in the fast PWM mode.
13.9.4
Phase Correct PWM Mode
The phase correct Pulse Width Modulation or phase correct PWM mode (WGMn3:0 = 1, 2, 3,
10, or 11) provides a high resolution phase correct PWM waveform generation option. The
phase correct PWM mode is, like the phase and frequency correct PWM mode, based on a dual-
slope operation. The counter counts repeatedly from BOTTOM (0x0000) to TOP and then from
TOP to BOTTOM. In non-inverting Compare Output mode, the Output Compare (OCnx) is
cleared on the compare match between TCNTn and OCRnx while upcounting, and set on the
compare match while downcounting. In inverting Output Compare mode, the operation is
inverted. The dual-slope operation has lower maximum operation frequency than single slope
operation. However, due to the symmetric feature of the dual-slope PWM modes, these modes
are preferred for motor control applications.
The PWM resolution for the phase correct PWM mode can be fixed to 8-, 9-, or 10-bit, or defined
by either ICRn or OCRnA. The minimum resolution allowed is 2-bit (ICRn or OCRnA set to
0x0003), and the maximum resolution is 16-bit (ICRn or OCRnA set to MAX). The PWM resolu-
tion in bits can be calculated by using the following equation:
In phase correct PWM mode the counter is incremented until the counter value matches either
one of the fixed values 0x00FF, 0x01FF, or 0x03FF (WGMn3:0 = 1, 2, or 3), the value in ICRn
(WGMn3:0 = 10), or the value in OCRnA (WGMn3:0 = 11). The counter has then reached the
TOP and changes the count direction. The TCNTn value will be equal to TOP for one timer clock
cycle. The timing diagram for the phase correct PWM mode is shown on Figure 13-8. The figure
shows phase correct PWM mode when OCRnA or ICRn is used to define TOP. The TCNTn
f
OC nxPWM
fclk_I/O
N
1
TOP
+
(
)
-----------------------------------
=
R
PC PWM
TOP
1
+
(
)
log
2
( )
log
-----------------------------------
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT90CAN128-15AZ | 功能描述:8位微控制器 -MCU 128KB Flash 16MHz RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| AT90CAN128-15MT | 功能描述:8位微控制器 -MCU 128KB Flash 15MHz RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| AT90CAN128-15MT1 | 功能描述:8位微控制器 -MCU 128KB Flash 15MHz RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| AT90CAN128-15MZ | 功能描述:8位微控制器 -MCU 128KB Flash 15MHz RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| AT90CAN128-16AE | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 128K Bytes of ISP Flash and CAN Controller |
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