參數(shù)資料
型號(hào)： AT43USB353M-AC
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
中文描述： 8-BIT, MROM, 24 MHz, RISC MICROCONTROLLER, PQFP48
封裝： 7 X 7 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, PLASTIC, MS-026BBC, LQFP-48
文件頁(yè)數(shù)： 44/95頁(yè)
文件大?。?/td> 568K
代理商： AT43USB353M-AC
44
AT43USB353M
3307B–USB–4/04
Note:
X = A or B
Note that in the PWM mode, the 10 least significant OCR1A/OCR1B bits, when written, are
transferred to a temporary location. They are latched when Timer/Counter1 reaches the value
TOP. This prevents the occurrence of odd-length PWM pulses (glitches) in the event of an
unsynchronized OCR1A/OCR1B write. See Figure 13 for an example.
Figure 13.
Effects on Unsynchronized OCR1 Latching
Note:
X = A or B
During the time between the write and the latch operation, a read from OCR1A or OCR1B will
read the contents of the temporary location. This means that the most recently written value
always will read out of OCR1A/B
When the OCR1 contains $0000 or TOP, the output OC1A/OC1B is updated to low or high on
the next compare match, according to the settings of COM1A1/COM1A0 or
COM1B1/COM1B0. This is shown in Table 19.
Note: If the compare register contains the TOP value and the prescaler is not in use
(CS12..CS10 = 001), the PWM output will not produce any pulse at all, because up-counting
and down-counting values are reached simultaneously. When the prescaler is in use
(CS12..CS10 = 001 or 000), the PWM output goes active when the counter reaches the TOP
Table 18.
Compare1 Mode Select in PWM Mode
COM1X1
COM1X0
Effect on OCX1
0
0
Not connected
0
1
Not connected
1
0
Cleared on compare match, up-counting. Set on compare match,
down-counting (non-inverted PWM).
1
1
Cleared on compare match, down-counting. Set on compare match,
up-counting (inverted PWM).
Synchronized
OCR1X Latch
PWM Output OC1X
Counter Value
Compare Value
PWM Output OC1X
Counter Value
Compare Value
Unsynchronized
OCR1X Latch
Glitch
Compare Value Changes
Compare Value Changes
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT43USB355 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
AT43USB355_02 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB355_06 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB355E-AC 功能描述:8位微控制器 -MCU USB GAME CONTROL w/EMBED HUB-COM TEMP 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
AT43USB355E-AU 功能描述:8位微控制器 -MCU USB GAME CONTROL w/ EMBED HUB 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
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