參數(shù)資料
型號： ATMEGA1284-PU
廠商： Atmel
文件頁數(shù)： 3/160頁
文件大?。?/td> 0K
描述： IC MCU AVR 128K FLASH 40PDIP
產(chǎn)品培訓模塊： MCU Product Line Introduction
megaAVR Introduction
標準包裝： 10
系列： AVR® ATmega
核心處理器： AVR
芯體尺寸： 8-位
速度： 20MHz
連通性： I²C，SPI，UART/USART
外圍設(shè)備： 欠壓檢測/復位，POR，PWM，WDT
輸入/輸出數(shù)： 32
程序存儲器容量： 128KB（64K x 16）
程序存儲器類型： 閃存
EEPROM 大?。?/td> 4K x 8
RAM 容量： 16K x 8
電壓 - 電源 (Vcc/Vdd)： 1.8 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 ~ 85°C
封裝/外殼： 40-DIP（0.600"，15.24mm）
包裝： 管件
配用： ATSTK600-RC05-ND - STK600 ROUTING CARD AVR
100
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
PWM mode is shown in Figure 15-6. The TCNT0 value is in the timing diagram shown as a his-
togram for illustrating the single-slope operation. The diagram includes non-inverted and
inverted PWM outputs. The small horizontal line marks on the TCNT0 slopes represent Com-
pare Matches between OCR0x and TCNT0.
Figure 15-6. Fast PWM mode, timing diagram.
The Timer/Counter Overflow Flag (TOV0) is set each time the counter reaches TOP. If the inter-
rupt is enabled, the interrupt handler routine can be used for updating the compare value.
In fast PWM mode, the compare unit allows generation of PWM waveforms on the OC0x pins.
Setting the COM0x1:0 bits to two will produce a non-inverted PWM and an inverted PWM output
can be generated by setting the COM0x1:0 to three: Setting the COM0A1:0 bits to one allows
the OC0A pin to toggle on Compare Matches if the WGM02 bit is set. This option is not available
for the OC0B pin (See Table 15-3 on page 104). The actual OC0x value will only be visible on
the port pin if the data direction for the port pin is set as output. The PWM waveform is gener-
ated by setting (or clearing) the OC0x Register at the Compare Match between OCR0x and
TCNT0, and clearing (or setting) the OC0x 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 prescale factor (1, 8, 64, 256, or 1024).
The extreme values for the OCR0A Register represents special cases when generating a PWM
waveform output in the fast PWM mode. If the OCR0A is set equal to BOTTOM, the output will
be a narrow spike for each MAX+1 timer clock cycle. Setting the OCR0A equal to MAX will result
in a constantly high or low output (depending on the polarity of the output set by the COM0A1:0
bits.)
A frequency (with 50% duty cycle) waveform output in fast PWM mode can be achieved by set-
ting OC0x to toggle its logical level on each Compare Match (COM0x1:0 = 1). The waveform
generated will have a maximum frequency of f
OC0 = fclk_I/O/2 when OCR0A is set to zero. This
TCNTn
OCRnx Update and
TOVn Interrupt Flag Set
1
Period
2
3
OCnx
(COMnx1:0 = 2)
(COMnx1:0 = 3)
OCRnx Interrupt Flag Set
4
5
6
7
f
OCnxPWM
fclk_I/O
N 256
------------------
=
相關(guān)PDF資料
PDF描述
VE-B2M-IY-F3 CONVERTER MOD DC/DC 10V 50W
VE-B2M-IY-F2 CONVERTER MOD DC/DC 10V 50W
ATMEGA3250V-8AU IC AVR MCU 32K 8MHZ 100TQFP
ATMEGA3250-16AU IC AVR MCU 32K 16MHZ 100TQFP
VE-B2L-IY-F3 CONVERTER MOD DC/DC 28V 50W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ATMEGA1284P-XPLD 功能描述:開發(fā)板和工具包 - AVR MEGA-1284P Xplained Evaluation kit RoHS:否 制造商:Arduino 產(chǎn)品:Evaluation Boards 工具用于評估:ATMega32U4 核心:AVR 接口類型:I2C, UART, USB 工作電源電壓:6 V to 20 V
ATMEGA1284RFR2-ZF 制造商:Atmel Corporation 功能描述:2.4GHZ 128K SOC 48PIN IND 125C TRAY - Trays 制造商:Atmel Corporation 功能描述:IC MCU 8BIT 128KB FLASH 48VQFN 制造商:Atmel Corporation 功能描述:2.4GHZ 128K SOC 48pin Ind 125C Tray
ATMEGA1284RFR2-ZFR 制造商:Atmel Corporation 功能描述:2.4GHZ 128K SOC 48 PIN IND125C T&R - Tape and Reel 制造商:Atmel Corporation 功能描述:IC MCU 8BIT 128KB FLASH 48VQFN 制造商:Atmel Corporation 功能描述:2.4GHZ 128K SOC 48 pin Ind125C T&R
ATMEGA1284RFR2-ZU 制造商:Atmel Corporation 功能描述:2.4GHZ 802.15.4 128K SOC 48PIN TRAY - Trays 制造商:Atmel Corporation 功能描述:IC MCU 8BIT 128KB FLASH 48VQFN 制造商:Atmel Corporation 功能描述:2.4GHZ 802.15.4 128K SOC 48pin Tray
ATMEGA1284RFR2-ZUR 制造商:Atmel Corporation 功能描述:2.4GHZ 802.15.4 128K SOC 48PIN T&R - Tape and Reel 制造商:Atmel Corporation 功能描述:IC MCU 8BIT 128KB FLASH 48VQFN 制造商:Atmel Corporation 功能描述:2.4GHZ 802.15.4 128K SOC 48pin T&R
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*