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| 型号： | EQ-SFM-MAX-V1.3 |
| 厂商： | Equinox Technologies |
| 文件页数： | 82/85页 |
| 文件大小： | 0K |
| 描述： | MODULE FOR PPM3-MK2 I/O DRIVER |
| 标准包装： | 1 |
| 附件类型： | I/O 驱动器模块 |
| 适用于相关产品： | PPM3-MK2 |
| 产品目录页面： | 597 (CN2011-ZH PDF) |
| 其它名称： | 483-1013 |
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4.9 Programmer and Target System are independently powered
4.9.1 Overview
In this scenario, the programmer is powered from a completely independent supply to the Target
System. The programmer must be powered via one of the ‘DC Power Connectors’ on the rear panel
at 9.0 – 12.0V. The Target System is powered from an external power supply in the range of 3.0 to
5.0V. The Programmer_Vcc output must NOT be connected to the Target_Vcc line in this scenario.
Fig. 4.9.1 Programmer and Target System are independently powered
Explanation of operation:
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The programmer is always powered ON
The ‘Vcc Option Link’ is removed
LK1 connection is removed (ie. Programmer and Target Vcc are disconnected)
The programmer must supply the same voltage as the Target_Vcc to the Programmer ‘I/O Level
Converter Circuitry’ .
The Target Power Supply should be switched OFF before the ISP cable is plugged into it
The programmer does not draw any current from the Target System during programming
When programming is complete, the Target System should be powered OFF and then the ISP
cable removed
Warning!
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The voltage applied to the programmer via the ISP cable must be between 3.0 and 5.0V as
this voltage is used to drive the programmer I/O Stage. A 6V2 5W zener diode is internally
connected across the programmer supply to protect against over-voltage.
The Programmer and Target Vcc must be physically disconnected by cutting the Vcc signal
in the ISP cable if necessary.
PPM3 MKII Programmer - User Guide - V1.04 - 10 th May 2008
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