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USB2227 Arkusz danych(PDF) 8 Page - Microchip Technology

Numer części USB2227
Szczegółowy opis  4th Generation USB 2.0 Flash Media Controller with Integrated Card Power FETs
PDF  25 Pages
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Producent  MICROCHIP [Microchip Technology]
Strona internetowa  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB2227 Arkusz danych(HTML) 8 Page - Microchip Technology

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USB2227/USB2228
DS00002256A-page 8
 2007-2016 Microchip Technology Inc.
CF_nCD2
54
IPU
CF Card Detection2:
This card detection pin is connected to the ground on the CF
device, when the CF device is inserted.
This pin has an internally controlled weak pull-up resistor.
CF_nCD1
53
IPU
CF Card Detection1:
This card detection pin is connected to ground on the CF device,
when the CF device is inserted.
This pin has an internally controlled weak pull-up resistor.
CF_nRESET
59
O8
CF Hardware Reset:
This pin is an active low hardware reset signal to CF device.
CF_nIOR
57
O8
CF IO Read:
This pin is an active low read strobe signal for CF device.
CF_nIOW
58
O8
CF IO Write Strobe:
This pin is an active low write strobe signal for CF device.
SmartMedia Interface
SM_nWP
74
O8PD
SM Write Protect:
This pin is an active low write protect signal for the SM device.
This pin has a weak pull-down resistor that is permanently
enabled.
SM_ALE
73
O8PD
SM Address Strobe:
This pin is an active high Address Latch Enable signal for the SM
device.
This pin has a weak pull-down resistor that is permanently
enabled.
SM_CLE
75
O8PD
SM Command Strobe:
This pin is an active high Command Latch Enable signal for the
SM device.
This pin has a weak pull-down resistor that is permanently
enabled.
SM_D[7:0]
72
71
70
69
68
67
66
65
I/O8PD
SM Data 7-0:
These pins are the bi-directional data signal SM_D7-SM_D0.
The bi-directional data signal has an internal weak pull-down
resistor.
SM_nRE
81
08PU
SM Read Enable:
This pin is an active low read strobe signal for SM device.
When using the internal FET, this pin has an internal weak pull-
up resistor that is tied to the output of the internal Power FET.
08
If an external FET is used (Internal FET is disabled), then the
internal pull-up is not available (external pull-ups must be used,
and should be connected to the applicable Card Power Supply).
Symbol
128-Pin
VTQFP
Buffer Type
Description



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