參數(shù)資料
型號: ATTINY43U-SUR
廠商: Atmel
文件頁數(shù): 146/158頁
文件大?。?/td> 0K
描述: MCU AVR 4KB FLASH 8MHZ 20SOIC
產(chǎn)品培訓(xùn)模塊: tinyAVR Introduction
標準包裝: 1,000
系列: AVR® ATtiny
核心處理器: AVR
芯體尺寸: 8-位
速度: 8MHz
連通性: USI
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,溫度傳感器,WDT
輸入/輸出數(shù): 16
程序存儲器容量: 4KB(2K x 16)
程序存儲器類型: 閃存
EEPROM 大小: 64 x 8
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 4x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
包裝: 帶卷 (TR)
其它名稱: ATTINY43U-SUR-ND
88
8048C–AVR–02/12
ATtiny43U
The extreme values for the OCRnA Register represents special cases when generating a PWM
waveform output in the fast PWM mode. If the OCRnA is set equal to BOTTOM, the output will
be a narrow spike for each MAX+1 timer clock cycle. Setting the OCRnA equal to MAX will result
in a constantly high or low output (depending on the polarity of the output set by the COMnA[1:0]
bits.)
A frequency (with 50% duty cycle) waveform output in fast PWM mode can be achieved by set-
ting OCnx to toggle its logical level on each Compare Match (COMnx[1:0] = 1). The waveform
generated will have a maximum frequency of f
OCnx = fclk_I/O/2 when OCRnA is set to zero. This
feature is similar to the OCnA toggle in CTC mode, except the double buffer feature of the Out-
put Compare unit is enabled in the fast PWM mode.
12.7.4
Phase Correct PWM Mode
The phase correct PWM mode (WGMn[2:0] = 1 or 5) provides a high resolution phase correct
PWM waveform generation option. The phase correct PWM mode is based on a dual-slope
operation. The counter counts repeatedly from BOTTOM to TOP and then from TOP to BOT-
TOM. TOP is defined as 0xFF when WGMn[2:0] = 1, and OCRnA when WGMn[2:0] = 5. 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 down-
counting. 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 sym-
metric feature of the dual-slope PWM modes, these modes are preferred for motor control
applications.
In phase correct PWM mode the counter is incremented until the counter value matches TOP.
When the counter reaches TOP, it 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 12-7 on page 89. The TCNTn value is in the timing diagram shown as a histogram for
illustrating the dual-slope operation. The diagram includes non-inverted and inverted PWM out-
puts. The small horizontal line marks on the TCNTn slopes represent Compare Matches
between OCRnx and TCNTn.
相關(guān)PDF資料
PDF描述
ATTINY44A-MFR MCU AVR 4KB FLASH 20MHZ 20QFN
ATTINY48-AUR MCU AVR 4KB FLASH 12MHZ 32TQFP
ATTINY48-MMUR MCU AVR 4KB FLASH 12MHZ 28MLF
ATTINY84A-MMHR MCU AVR 8K FLASH 20MHZ 3X3VQFN
ATTINY84V-10SSUR MCU AVR 8KB FLASH 10MHZ 14SOIC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ATTINY44 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
ATTINY44-15MZ 功能描述:8位微控制器 -MCU 4KB Flash 15MHz Auto 125-degrees C 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
ATTINY44-15SSZ 功能描述:8位微控制器 -MCU 4KB Flash 15MHz Auto 125-degrees C 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
ATTINY441-MMH 制造商:Atmel Corporation 功能描述:16MHZ, 3X3MM, 20 VQFN, IND. GRADE, GREEN - Bulk 制造商:Atmel Corporation 功能描述:IC MCU 8BIT 4KB FLASH 20VQFN
ATTINY441-MMHR 制造商:Atmel Corporation 功能描述:16MHZ,3X3MM, 20VQFN, IND.GRADE,GREEN T&R - Tape and Reel 制造商:Atmel Corporation 功能描述:IC MCU 8BIT 4KB FLASH 20VQFN