參數(shù)資料
型號(hào)： USB2227-NU-XX
廠商： STANDARD MICROSYSTEMS CORP
元件分類： 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)： 18/26頁(yè)
文件大?。?/td> 919K
代理商： USB2227-NU-XX
4th Generation USB2.0 Flash Media Controller with Integrated Card Power FETs
Datasheet
Revision 1.77 (06-13-05)
18
SMSC USB2227/USB2228
DATASHEET
Memory Address
Bus
MA[1:0]/CLK_S
EL[1:0]
I/O8PD
MA[1:0], These signals address memory locations
within the external memory.
SEL[1:0]. During nRESET assertion, these pins will
select the operating frequency of the external clock, and
the corresponding weak pull-down resistors are
enabled. When nRESET is negated, the value on these
pins will be internal latched and these pins will revert to
MA[1:0] functionality, the internal pull-downs will be
disabled.
SEL[1:0] = ‘00’. 24MHz
SEL[1:0] = ‘01’. RESERVED
SEL[1:0] = ‘10’. RESERVED
SEL[1:0] = ‘11’. 48MHz
Note:
If the latched value is ‘1’, then the
corresponding MA pin is tri-stated when the
following conditions are true:
1. IDLE bit (PCON.0) is 1.
2. INT2 is negated
3. SLEEP bit of CLOCK_SEL is 1.
If the latched value is ‘0’, then the corresponding MA pin
will function identically to the MA[15:3] pins at all times
(other than during nRESET assertion).
Memory Write
Strobe
nMWR
O8
Program Memory Write; active low
Memory Read
Strobe
nMRD
O8
Program Memory Read; active low
Memory Chip
Enable
nMCE
O8
Program Memory Chip Enable; active low.
This signal is asserted, when any of the following
conditions are no longer met:
1. IDLE bit (PCON.0) is 1.
2. INT2 is negated
3. SLEEP bit of CLOCK_SEL is 1.
Note:
This signal is held to a logic ‘high’ while
nRESET is asserted.
MISC
General Purpose
I/O
GPIO1
I/O8
This pin may be used either as input, edge sensitive
interrupt input, or output.
General Purpose
I/O
GPIO2
I/O8
This pin may be used either as input, edge sensitive
interrupt input, or output.
General Purpose
I/O
GPIO3
I/O8
This pin may be used either as input, edge sensitive
interrupt input, or output.
General Purpose
I/O
GPIO4
I/O8
This pin may be used either as input, edge sensitive
interrupt input, or output.
General Purpose
I/O
GPIO5
I/O8
This pin may be used either as input, edge sensitive
interrupt input, or output.
NAME
SYMBOL
BUFFER
TYPE
DESCRIPTION
相關(guān)PDF資料
PDF描述
USB2228 4TH GENERATION USB2.0 FLASH MEDIA CONTROLLER WITH INTEGRATED CARD POWER FETS
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
USB2228 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
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
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