M 5 2 2 1 0 D E M O
U S E R
G U I D E
A U G U S T
2 1 ,
2 0 0 7
Figure 4: PWR_SW Switch
PWR_SW
CONFIGURATION
OFF - Input power source disconnected from +3.3V rail
PWR_SW
ON - Input power source connected to +3.3V rail
POWER SELECT
Two option headers control input power configuration for the M52210DEMO. The +3.3V_SEL
option header selects the source of power to the +3.3V rail. The +5V_SEL option header se-
lects the source of power to the +5V rail. The sections below show the different configuration
for each option header.
This board is designed to draw power through the USB cable connected to the integrated USB
BDM. Two voltage regulators provide power the +3.3V and +5V voltage rails used on the
board.
CAUTION
USB current is limited to 500mA maximum. Excessive current drain will cause the USB bus to
disconnect causing the DEMO board to reset. This may also cause damage to the DEMO
board and the host PC.
+3.3V_SEL
The +3.3V rail may be powered from the PWR connector, the integrated USB BDM, or the
miniAB USB connector. The +3.3V_SEL option header selects between the various power in-
puts. The regulator at VR2 powers the +3.3V voltage rails. The figure below shows the differ-
ent settings for the +3.3V_SEL option header.
Figure 5: +3.3V_SEL Option
?
?
?
?
?
?
VUSB
VBDM
VIN
Selects power input from miniAB USB connector
Selects power input from integrated USB BDM *
Selects power input from PWR connector
* indicates default shipping configuration
+5V_SEL
The +5V rail may be powered from the PWR connector, the integrated USB BDM, or the
miniAB USB connector. The +5V option header selects between the various power inputs.
The regulator at VR1 powers the +5V voltage rail when input power is applied to the PWR
connector. The figure below shows the different setting for the +5V option header.
11
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相关代理商/技术参数
M52210DEMO 制造商:Freescale Semiconductor 功能描述:MCF5221X and MCF521XX ColdFire
M52211EVB 功能描述:开发板和工具包 - COLDFIRE KIRIN 0 FULL FEATURED EV RoHS:否 制造商:Freescale Semiconductor 产品:Development Kits 工具用于评估:MCF53017 核心:ColdFire V3 接口类型:Ethernet, UART, USB 工作电源电压:12 V
M52221DEMO 功能描述:开发板和工具包 - COLDFIRE MCF52221 DEMO BOARD RoHS:否 制造商:Freescale Semiconductor 产品:Development Kits 工具用于评估:MCF53017 核心:ColdFire V3 接口类型:Ethernet, UART, USB 工作电源电压:12 V
M52221DEMO 制造商:Freescale Semiconductor 功能描述:MCF52221 Demonstration Board
M52223EVB 功能描述:开发板和工具包 - COLDFIRE MCF52223 EVALUATION BOARD RoHS:否 制造商:Freescale Semiconductor 产品:Development Kits 工具用于评估:MCF53017 核心:ColdFire V3 接口类型:Ethernet, UART, USB 工作电源电压:12 V
M52223EVB 制造商:Freescale Semiconductor 功能描述:MCF52223 EVALUATION BOAR
M5222FP 制造商:Panasonic Industrial Company 功能描述:IC
M52230DEMO 功能描述:开发板和工具包 - COLDFIRE MCF52230 LOW COST EVALUA RoHS:否 制造商:Freescale Semiconductor 产品:Development Kits 工具用于评估:MCF53017 核心:ColdFire V3 接口类型:Ethernet, UART, USB 工作电源电压:12 V