參數(shù)資料
型號(hào)： USB2228
廠商： SMSC Corporation
英文描述： 4TH GENERATION USB2.0 FLASH MEDIA CONTROLLER WITH INTEGRATED CARD POWER FETS
中文描述： 第4代USB2.0閃存介質(zhì)控制器，它集成卡功率場效應(yīng)管
文件頁數(shù)： 19/26頁
文件大?。?/td> 919K
代理商： USB2228
4th Generation USB2.0 Flash Media Controller with Integrated Card Power FETs
Datasheet
SMSC USB2227/USB2228
19
Revision 1.77 (06-13-05)
DATASHEET
GPIO6, ROMEN
GPIO6/ROMEN
IPU
This pin has an internal weak pull-up resistor that is
enabled or disabled by the state of nRESET.
The pull-up is enabled when nRESET is active.
The pull-up is disabled, when the nRESET is inactive
(some clock cycles later, after the rising edge of
nRESET).
The state of this pin is latched internally on the rising
edge of nRESET to determine if internal or external
program memory is used.
The state latched is stored in ROMEN bit of GPIO_IN1
register.
I/O8
After the rising edge of nRESET, this pin may be used
as GPIO6 or RXD.
When pulled low via an external weak pull-down
resistor, an external program memory should be
connected to the memory data bus. The
USB2227/USB2228 uses this external bus for program
execution.
When this pin is left unconnected or pulled high by a
weak pull-up resistor, the USB2227/USB2228 uses the
internal ROM for program execution.
General Purpose
I/O
GPIO7
I/O8
This pin may be used either as input, edge sensitive
interrupt input, or output.
General Purpose
I/O
Or
Card Power
GPIO8/
CRD_PWR0
I/O8
GPIO: This pin may be used either as input, edge
sensitive interrupt input, or output.
CRD_PWR: Card Power drive of 3.3V @ 100mA.
General Purpose
I/O
GPIO9
I/O8
This pin may be used either as input, edge sensitive
interrupt input, or output.
General Purpose
I/O
Or
Card Power
GPIO10/
CRD_PWR1
I/O8
GPIO: These pins may be used either as input, edge
sensitive interrupt input, or output.
CRD_PWR: Card Power drive of 3.3V @ 100mA.
General Purpose
I/O
Or
Card Power
GPIO11/
CRD_PWR2
I/O8
GPIO: This pin may be used either as input, edge
sensitive interrupt input, or output.
CRD_PWR: Card Power drive of 3.3V @ 200mA.
General Purpose
I/O
GPIO[15:12]
I/O8
These pins may be used either as input, or output.
RESET input
nRESET
IS
This active low signal is used by the system to reset the
chip. The active low pulse should be at least 1
μ
s wide.
TEST Input
nTEST[1:0]
I
These signals are used for testing the chip. User should
normally tie them high externally, if the test function is
not used.
DIGITAL POWER, GROUNDS, and NO CONNECTS
1.8v Digital Core
Power
VDD18
+1.8V Core power
All VDD18 pins must be connected together on the
circuit board.
NAME
SYMBOL
BUFFER
TYPE
DESCRIPTION
相關(guān)PDF資料
PDF描述
USB2228-NE-XX 4TH GENERATION USB2.0 FLASH MEDIA CONTROLLER WITH INTEGRATED CARD POWER FETS
USB2228-NU-XX 4TH GENERATION USB2.0 FLASH MEDIA CONTROLLER WITH INTEGRATED CARD POWER FETS
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
USB2228AHZS07 制造商:Rochester Electronics LLC 功能描述: 制造商:SMSC 功能描述:
USB2228-AHZS-XX 制造商:SMSC 制造商全稱:SMSC 功能描述:4th Generation USB2.0 Flash Media Controller with Integrated Card Power FETs
USB2228-NE-03 功能描述:USB 接口集成電路 USB 2.0 Flash Media Card RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
USB2228-NE-05 制造商:Rochester Electronics LLC 功能描述:USB2.0 FLASH MEDIA CARD CONTROLLER - Bulk
USB2228-NE-XX 制造商:SMSC 制造商全稱:SMSC 功能描述:4TH GENERATION USB2.0 FLASH MEDIA CONTROLLER WITH INTEGRATED CARD POWER FETS
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