EXTF (SD to Micro SD Card Extender Board)

Introduction:

The EXTF is a debug and signal detection tool for Micro Secure Digital Memory Card. It allows a Micro SD card to be
extended from the host slot for full access to the all of signal pins. It also allows application of other Secure Digital
Memory Card on the equipment which has TF card interface.      
It is especially designed to save valuable labor and time in the production environment. The EXTF 1.0 is designed
to minimize the signal degradation effects of the extender by proven design techniques. Separate Vcc and ground planes. Provide a low inductance path to the host’s power supply.

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The tool has been designed with the engineer in mind. Capable of power (voltage and current) measurement and logic analyzer integration “in-line” for fast development cycles. A clearly marked jumper header allows probing of all of pins. The EXTF hasthe function of over-current protection with PTC fuse. It’s also a powerful tool for engineers, or use for factory test protection.

The EXTF is constructed of high quality components for years of trouble free service.

Function

• Application of SD Memory Card on the equipment which has
• All signal pins are clearly marked.
• Power and ground can be isolated for power measurements.
• LED indicates powers status.
• Adds dumping resisters for all of signals.
• Vcc bypassed for clean power.
• Supports both Secure Digital Memory Cards and MMC cards.
• Supports both Secure Digital Memory Cards
• High quality connectors for long service life.
• Over-current protection with PTC fuse.
• Passive adapter unnecessary.
• Supports both Secure Digital Memory Cards and MMC cards.
• Supports both Secure Digital Memory Cards
• High quality connectors for long service life.
• Over-current protection with PTC fuse.
• Passive adapter unnecessary.

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