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)： 81/95頁(yè)
文件大?。?/td> 568K
代理商： AT43USB353M-AC
81
AT43USB353M
3307B–USB–4/04
Port Power Switching
1.
Gang Power Switching
– One of the microcontroller GPIO pins, PWRN, must be pro-
grammed as an output to control the external switch such as the MIC2025-2. Switch
ON is requested by the USB Host through the SetPortFeature(PORT_POWER)
request. Switch OFF is executed upon receipt of a ClearPortFeature(PORT_POWER)
or upon detecting an overcurrent condition. The firmware clears the Power Control Bit.
Only if all of the Power Control Bits of ports 2 and 3 are cleared should the firmware de-
assert the PWRN pin.
Individual Power Switching
– Two microcontroller GPIO pins, PWR2N and PWR3N,
must be assigned for each USB port to control the external switch such as the
MIC2026-2. Each of the Power Control Bits controls one PWRxN.
Multiple Ganged Overcurrent Protection
– Overcurrent sensing is grouped physi-
cally into one or more gangs, but reported individually.
2.
3.
Figure 20 shows a simplified diagram of a power management circuit of an AT43USB353M
based hub design with global overcurrent protection and ganged power switching.
Figure 20.
Port Power Management
Suspend and
Resume
The AT43USB353M enters suspend only when requested by the USB host through bus inac-
tivity for at least 3 ms. The USB hardware would detect this request, sets the GLB_SUSP bit of
SPRSR, Suspend/Resume Register, and interrupts the microcontroller if the interrupt is
enabled. The microcontroller should shut down any peripheral activity and enter the Power
Down mode by setting the SE and SM bits of MCUCR and then executes the SLEEP instruc-
tion. The USB hardware shuts off the oscillator and PLL.
CTL
FLG
IN
OUT
SWITCH
AT43USB353M
GND
VCC
PWRN
OVCN
PORT2_POWER
PORT2_GND
PORT3_POWER
PORT3_GND
BUS_POWER
GND
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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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