EMIF06-MSD02N16(2008) Просмотр технического описания (PDF) - STMicroelectronics
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EMIF06-MSD02N16 Datasheet PDF : 12 Pages
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EMIF06-MSD02N16
Figure 8. Mechanical card detection
Host
controller
Application information
V DD
Pull - up
resistor
GND
WP/CD
GND
Contact when
inserting the card
SD card
A pull-up of 90 kΩ is embedded into the EMIF06-MSD02N16. The routing corresponding to
the mechanical card detection configuration is shown in Figure 9.
Figure 9. Circuit routing for mechanical card detection
Card detect pin
Card detect host input
NC
Pin 1–DAT2
Pin 2–CD/DAT3
Pin 3–CMD
Pin 4 –VCC
Pin 5–CLK
Pin 6–GND
Pin 7–DAT0
Pin 8–DAT1
Top level
DAT3 pull-up
Card detect pull-up
Bottom view
Card detect host input
Card detect pin
NC
DAT2– Pin 1
CD/DAT3–Pin 2
CMD– Pin 3
VCC – Pin 4
CLK– Pin 5
GND – Pin 6
DAT0– Pin 7
DAT1–Pin 8
Top view
Top level
DAT3 pull-up
Card detect pull-up
In case of electrical card detection, the user must add a pull-down on the circuit connected
to the CD/DAT3 pin of the micro-SD/T-Flash pin as shown in Figure 10.
Figure 10. Electrical card detection
Host
controller
Pull - down
resistor
GND
DAT3 (CD)
50 kΩ
V DD
0
SD card
5/12
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