參數(shù)資料
型號: AT43USB355E-AC
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
中文描述: 8-BIT, MROM, 12 MHz, RISC MICROCONTROLLER, PQFP64
封裝: 1.40 MM, PLASTIC, MS-026ACB, LQFP-64
文件頁數(shù): 99/115頁
文件大?。?/td> 610K
代理商: AT43USB355E-AC
99
AT43USB355
2603G–USB–04/06
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 27 shows a simplified diagram of a power management circuit of an AT43USB355
based hub design with global overcurrent protection and ganged power switching.
Figure 27.
Port Power Management
Suspend and
Resume
The AT43USB355 enters suspend only when requested by the USB host through bus inactiv-
ity 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.
Global Resume
Global resume is signaled by a J to K state change on Port0. The USB hardware enables the
oscillator/PLL, propagates the RESUME signaling, and sets the RSM bit of the SPRSR, which
generates an interrupt. The microcontroller starts executing where it left off and services the
interrupt. As part of the ISR, the firmware clears the GLB_SUSP bit.
Remote Wakeup
While the AT43USB355 is in global suspend, resume signaling is also possible through
remote wakeup if the remote wakeup feature is enabled. Remote wakeup is defined as a port
CTL
FLG
IN
OUT
SWITCH
AT43USB355
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
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AT43USB355M-AC 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
AT43USB355M-AU 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
AT43USB370 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:USB 2.0 Full-Speed Host/Function Processor
AT43USB370E-AC 功能描述:USB 接口集成電路 USB HOST DEVICE CONTROL - COM TEMP RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20