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USB2240 Datenblatt(PDF) 14 Page - Microchip Technology

Teilenummer USB2240
Bauteilbeschribung  Ultra Fast USB 2.0 Multi-Format
PDF  43 Pages
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Hersteller  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB2240 Datenblatt(HTML) 14 Page - Microchip Technology

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USB224X
DS00001979A-page 14
 2010 - 2015 Microchip Technology Inc.
xD_nWE
12
O12PU
xD Write Enable
This pin is an active low write strobe signal for the xD
device.
When using the internal FET, this pin has a weak internal
pull-up resistor that is tied to the output of the internal
power FET.
If an external FET is used (Internal FET is disabled), then
the internal pull-up is not available (external pull-ups must
be used).
xD_nB/R
17
IPU
xD Busy or Data Ready
This pin is connected to the BSY/RDY pin of the xD
device.
When using the internal FET, this pin has a weak internal
pull-up resistor that is tied to the output of the internal
power FET.
If an external FET is used (Internal FET is disabled), then
the internal pull-up is not available (external pull-ups must
be used).
xD_nCD
19
I/O12
xD Card Detection
This is designated by the default firmware as the xD-
Picture card detection pin.
Note: This pin can be left unconnected if the socket is
not used.
xD_nCE
15
O12PU
xD Chip Enable
This pin is the active low chip enable signal to the xD
device.
When using the internal FET, this pin has a weak internal
pull-up resistor that is tied to the output of the internal
power FET.
If an external FET is used (Internal FET is disabled), then
the internal pull-up is not available (external pull-ups must
be used).
MEMORY STICK (MS) INTERFACE
MS_D[7:0]
8
7
4
5
23
20
10
11
I/O12PD
MS System Data In/Out
These pins are the bi-directional data signals for the MS
device. MS_D0, MS_D2, and MS_D3 have weak pull-
down resistors.
In serial mode, the most significant bit (MSB) of each byte
is transmitted first by either MSC or MS device on
MS_D0.
In parallel mode, MS_D1 has a pull-down resistor,
otherwise it is disabled.
In 4- or 8-bit parallel mode, there is a weak pull-down
resistor on all MS_D7 - 0 signals.
TABLE 6-1:
USB224X 36-PIN QFN PIN DESCRIPTIONS (CONTINUED)
Symbol
Buffer
Type
Description



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