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參數(shù)資料
| 型號(hào)： | USB2227-NU-11 |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 存儲(chǔ)控制器/管理單元 |
| 中文描述： | IDE COMPATIBLE, FLASH MEMORY DRIVE CONTROLLER, PQFP128 |
| 封裝： | 14 X 14 MM, 1 MM HEIGHT, ROHS COMPLIANT, VTQFP-128 |
| 文件頁數(shù)： | 8/25頁 |
| 文件大小： | 399K |
| 代理商： | USB2227-NU-11 |
4th Generation USB 2.0 Flash Media Controller with Integrated Card Power FETs
Datasheet
SMSC USB2227/USB2228
16
Revision 1.93 (11-01-07)
DATASHEET
MA[1:0]/CLK_S
EL[1:0]
117
116
I/O8PD
Memory Address Bus:
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).
nMWR
14
O8
Memory Write Strobe:
Program Memory Write; active low
nMRD
13
O8
Memory Read Strobe:
Program Memory Read; active low
nMCE
17
O8
Memory Chip Enable:
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
GPIO1
114
I/O8
General Purpose I/O:
This pin may be used either as input, edge sensitive interrupt
input, or output.
GPIO2
113
I/O8
General Purpose I/O:
This pin may be used either as input, edge sensitive interrupt
input, or output.
GPIO3
94
I/O8
General Purpose I/O:
This pin may be used either as input, edge sensitive interrupt
input, or output.
SYMBOL
128-PIN
VTQFP
BUFFER
TYPE
DESCRIPTION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| USB2228-NU-03 | |
| USB2228-NE-03 | |
| USB2240-AEZG-XX | |
| USB2240I-AEZG-XX | |
| USB2241-AEZG-XX | |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| USB2227-NU-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 | 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 |
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