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参数资料
| 型号： | MC34827A1EPR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 33/57页 |
| 文件大小： | 0K |
| 描述： | IC USB POWER MANAGER 20-QFN |
| 标准包装： | 1 |
| 应用： | OR 控制器，UART/USB 数据，音频管理 |
| 电流 - 电源： | 9µA |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-UFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN 裸露焊盘（3x3） |
| 包装： | 标准包装 |
| 其它名称： | MC34827A1EPR2DKR |
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FUNCTIONAL DEVICE OPERATION
RESET FEATURES
the power MOSFET will be turned off immediately when the
accessory is identified as unknown accessory.
Either the falling edge of the VBUS_DET or the rising edge
detection. Detach bit is set to inform the detachment of the
unknown accessory. Then the 34827 enters the Standby
mode.
of the ID_FLOAT signals can trigger the detachment
RESET FEATURES
HARDWARE RESET
There are three sources of hardware resetting for the
34827 as the Figure 29 shows, including the Power-on Reset
caused by the powered up VDD, a hardware reset by VDDIO
input and a hardware reset by the I 2 C bus lines.
The VDD Power-on Reset is described earlier. The
hardware reset by I 2 C signals is shown in Figure 30 . When
both the I2C_SCL and the I2C_SDA have a negative pulse
for longer than T RSTI2C , a hardware reset is generated.
The operating waveforms of hardware reset by VDDIO are
shown in Figure 31 . A glitch on the VDDIO with duration less
than a deglitch time T VDDIODGT will be ignored. If the negative
pulse on the VDDIO lasts longer than the deglitch time, a
reset by VDDIO is generated. The reset signal has a width of
160 μ s typically.
All registers except 0x01H will be reset to the default
values when hardware reset happens. During the reset
process, the 34827 will not respond to any attachment or
detachment activities.
SOFTWARE RESET
The 34827 supports a software reset, which is realized by
writing the Reset bit in 0x21H register to 1. The Reset bit will
be cleared to 0 at once since it is of W/C type. The
consequence of the software reset is the same as the
hardware reset. All registers except 0x01H will be reset.
I2C_SDA
I2C_SCL
I2C-Bus
Reset
Detection
VDD
+
-
Delay
td2
reset
V VDDPOR
VDDIO
VDDIO
Reset
Detection
Figure 29. Sources of Reset in the 34827
T RSTI2C
Reset
I2C_SDA
I2C_SCL
Reset
Condition
Start
Condition
Stop
Condition
Figure 30. Hardware Reset Using the I 2 C Bus
T RSTVDDIO
Reset
VDDIO
Figure 31. Hardware Reset Using the VDDIO Input
MC34827
Analog Integrated Circuit Device Data
Freescale Semiconductor
33
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC34827A2EPR2 | 功能描述:USB 接口集成电路 MINI USB IC RoHS:否 制造商:Cypress Semiconductor 产品:USB 2.0 数据速率: 接口类型:SPI 工作电源电压:3.15 V to 3.45 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:WLCSP-20 |
| MC34829 | 制造商:SPC Multicomp 功能描述:CONNECTOR FPC SMD 0.5MM 20WAY |
| MC3482BL | 制造商:Motorola Inc 功能描述: |
| MC34831 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL SMT 7WAY 制造商:SPC Multicomp 功能描述:HEADER, VERTICAL, SMT, 7WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONNECTOR HEADER 7POS, 1.25MM; Connector Type:Wire to Board; Series:1251S; Contact Termination:Surface Mount Vertical; Gender:Header; No. of Contacts:7; No. of Rows:1; Pitch Spacing:1.25mm; Contact Plating:Tin ;RoHS Compliant: Yes |
| MC34833 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL SMT 11WAY |
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