USB2250-NU-05 SMSC, USB2250-NU-05 Datasheet - Page 14

• Manufacturer Part Number: USB2250-NU-05
• Description: IC CTRLR USB2.0 FLASH 128VTQFP
• Manufacturer: SMSC

Specifications of USB2250-NU-05

• Controller Type: FlashMedia Controller
• Interface: Serial
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 165mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP
• Operating Supply Voltage: 3.3 V
• Mounting Style: SMD/SMT
• Operating Temperature Range: 0 C to + 70 C
• Supply Current: 80 mA
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 638-1088

Revision 2.0 (09-29-09)
SM Address
Strobe
SM Command
Strobe
SM Data 7-0
SM Read Enable
SM Write Enable
SM Write Protect
Switch
SM Busy or Data
Ready
NAME
Table 6.1 USB2250/50i/51/51i 128-Pin VTQFP Pin Descriptions (continued)
SM_nWPS
SM_D[7:0]
SYMBOL
SM_nB/R
SM_nWE
SM_CLE
SM_nRE
SM_ALE
128-PIN
VTQFP
52
53
39
40
41
42
43
44
45
46
55
48
38
56
DATASHEET
BUFFER
I/O12PD
O12PD
O12PD
O12PU
O12PU
14
TYPE
IPU
IPU
This pin is an active high Address Latch
Enable signal for the SM device and has a
weak pull-down resistor that is permanently
enabled.
This pin is an active high Command Latch
Enable signal for the SM device and has a
weak pull-down resistor that is permanently
enabled.
These pins are the bi-directional data signals
SM_D7-SM_D0 and have weak internal pull-
down resistors.
This pin is an active low read strobe signal for
the SM 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).
This pin is an active low write strobe signal for
the SM 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).
A write-protect seal is detected when this pin
is low. This pin has a weak internal pull-up
resistor.
This pin is connected to the BSY/RDY pin of
the SM 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).
Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
DESCRIPTION
SMSC USB2250/50i/51/51i
Datasheet