參數(shù)資料
型號(hào)： USB2227
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(chǎng)效應(yīng)管
文件頁(yè)數(shù)： 17/26頁(yè)
文件大?。?/td> 919K
代理商： USB2227
4th Generation USB2.0 Flash Media Controller with Integrated Card Power FETs
Datasheet
SMSC USB2227/USB2228
17
Revision 1.77 (06-13-05)
DATASHEET
Crystal Output
XTAL2
OCLKx
24Mhz Crystal
This is the other terminal of the crystal, or left open
when an external clock source is used to drive
XTAL1/CLKIN. It may not be used to drive any external
circuitry other than the crystal circuit.
MEMORY/IO INTERFACE
Memory Data Bus
MD[7:0]
I/O8PU
When ROMEN bit of GPIO_IN1 register = 0, these
signals are used to transfer data between the internal
CPU and the external program memory.
These pins have internally controlled weak pull-up
resistors.
Memory Address
Bus
MA[15:3]
O8
These signals address memory locations within the
external memory.
Memory Address
Bus
MA2/
SEL_CLKDRV
I/O8PD
MA2 Addresses memory locations within the external
memory.
SEL_CLKDRV. During nRESET assertion, this pins will
select the operating clock mode (crystal or externally
driven clock source), and a weak pull-down resistor is
enabled. When nRESET is negated, the value will be
internally latched and this pin will revert to MA2
functionality, the internal pull-down will be disabled.
‘0’ = Crystal operation (24MHz only)
‘1’ = Externally driven clock source (24MHz or 48MHz)
Note:
If the latched value is ‘1’, then the MA2 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 MA2 pin will function
identically to the MA[15:3] pins at all times (other than
during nRESET assertion).
NAME
SYMBOL
BUFFER
TYPE
DESCRIPTION
相關(guān)PDF資料
PDF描述
USB2227-NE-XX 4TH GENERATION USB2.0 FLASH MEDIA CONTROLLER WITH INTEGRATED CARD POWER FETS
USB2227-NU-XX 4TH GENERATION USB2.0 FLASH MEDIA CONTROLLER WITH INTEGRATED CARD POWER FETS
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
USB2227_0503 制造商:SMSC 制造商全稱:SMSC 功能描述:Flash Card Reader Media Power Considerations
USB2227_06 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
USB2227-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
USB2227-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
USB2227-NE-05 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
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