參數(shù)資料
型號(hào)： USB2228-NU-XX
廠商： STANDARD MICROSYSTEMS CORP
元件分類(lèi)： 存儲(chǔ)控制器/管理單元
英文描述： 4TH GENERATION USB2.0 FLASH MEDIA CONTROLLER WITH INTEGRATED CARD POWER FETS
中文描述： FLASH MEMORY DRIVE CONTROLLER, PQFP128
封裝： 14 X 14 MM, 1 MM HEIGHT, ROHS COMPLIANT, VTQFP-128
文件頁(yè)數(shù)： 20/26頁(yè)
文件大?。?/td> 919K
代理商： USB2228-NU-XX
4th Generation USB2.0 Flash Media Controller with Integrated Card Power FETs
Datasheet
Revision 1.77 (06-13-05)
20
SMSC USB2227/USB2228
DATASHEET
Notes:
■
Hot-insertion capable card connectors are required for all flash media. It is required for SD
connector to have Write Protect switch. This allows the chip to detect MMC card.
■
nMCE is normally asserted except when the 8051 is in standby mode.
6.2
Buffer Type Descriptions
3.3v Power & &
Voltage Regulator
Input
VDD33
3.3V Power & Regulator Input.
pins 100 & 108 supply 3.3V power to the internal 1.8V
regulators.
Ground
VSS
Ground Reference
Table 6.1 USB2227/USB2228 Buffer Type Descriptions
BUFFER
DESCRIPTION
I
Input
IPU
Input with internal weak pull-up resistor.
IPD
Input with internal weak pull-down resistor.
IS
Input with Schmitt trigger
I/O8
Input/Output buffer with 8mA sink and 8mA source.
I/O8PU
Input/Output buffer with 8mA sink and 8mA source, with an internal weak pull-up resistor.
I/O8PD
Input/Output buffer with 8mA sink and 8mA source, with an internal weak pull-down
resistor.
O8
Output buffer with 8mA sink and 8mA source.
O8PU
Output buffer with 8mA sink and 8mA source, with an internal weak pull-up resistor.
O8PD
Output buffer with 8mA sink and 8mA source, with an internal weak pull-down resistor.
ICLKx
XTAL clock input
OCLKx
XTAL clock output
I/O-U
Analog Input/Output Defined in USB specification
AIO
Analog Input/Output
NAME
SYMBOL
BUFFER
TYPE
DESCRIPTION
相關(guān)PDF資料
PDF描述
USB2231 5th GENERATION HI-SPEED USB FLASH MEDIA AND CIR CONTROLLER WITH INTEGRATED CARD POWER FETs
USB2231-NE-03 5th GENERATION HI-SPEED USB FLASH MEDIA AND CIR CONTROLLER WITH INTEGRATED CARD POWER FETs
USB2231-NU-03 5th GENERATION HI-SPEED USB FLASH MEDIA AND CIR CONTROLLER WITH INTEGRATED CARD POWER FETs
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USB2232-NE-03 5th GENERATION HI-SPEED USB FLASH MEDIA AND CIR CONTROLLER WITH INTEGRATED CARD POWER FETs
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