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參數(shù)資料
| 型號： | MAX14502AETL+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 24/41頁 |
| 文件大小： | 0K |
| 描述： | IC CARD READER USB-SD 40-TQFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 60 |
| 應(yīng)用： | USB |
| 接口： | I²C，2 線串口 |
| 電源電壓： | 1.8 V ~ 3.3 V |
| 封裝/外殼： | 40-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 40-TQFN-EP（5x5） |
| 包裝： | 管件 |
| 安裝類型： | 表面貼裝 |
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MAX14500–MAX14503
Hi-Speed USB-to-SD Card
Readers with Bypass
30
______________________________________________________________________________________
56-bump WLP version, containing one port and two
SD cards. The host SD ports 1 and 2 are connected
together at the host. This configuration allows two
SD cards connected to one host, but only one SD
card is connected to the host at a time. The host
uses the MAX14500–MAX14503’s internal SD port
switches to multiplex between the cards. This con-
figuration can also be used to limit the bus capaci-
tive loading of having two cards connected at the
same time to the bus (Figure 4).
SD Card Clock Frequency
The SD card clock frequency is the lower of the maxi-
mum the card can support as read from the SD card
and base SD clock (base SD clock is determined from
values shown in Table 5). The MAX14500–MAX14503
internally read the max frequency directly from the SD
card. In I2C control, the maximum clock frequency is
programmable to values lower than the maximum
allowed by the SD card, helping with issues such as
excessive bus capacitance causing data errors.
1110
00
0
ADDRESS = 0xE0
S
0 = WRITE
0000
001
0
REGISTER ADDRESS = 0x01
0
1110
00
0
ADDRESS = 0xE1
S
1 = READ
1
A
REGISTER 0x01 READ DATA
D7
D6
D5
D4
D2
D1
D3
P
D0
A/A
P
A
Figure 19. Format for Reading
1110
0
ADDRESS = 0xE0
S
0 = WRITE
0000
000
0
REGISTER ADDRESS = 0x00
0
1111
0
ADDRESS = 0xE1
S
1 = READ
1
A
REGISTER 0x00 READ DATA
D7
D6
D5
D4
D2
D1
D3
D0
A
REGISTER 0x02 READ DATA
D7
D6
D5
D4
D2
D1
D3
D0
A
REGISTER 0x01 READ DATA
D7
D6
D5
D4
D2
D1
D3
D0
A
P
REGISTER 0x03 READ DATA
D7
D6
D5
D4
D2
D1
D3
D0
A
P
A
Figure 20. Format for Reading Multiple Registers
INPUT FREQUENCY (MHz)
BASE SD CLOCK (MHz)
12
48
13
52
19.2
48
26
52
Table 5. Maximum SD Card Clock Frequency
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX14502AETL+ | 功能描述:接口 - 專用 High speed USB to FS-USB RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| MAX14502AETL+T | 功能描述:接口 - 專用 High speed USB to FS-USB RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| MAX14502EVKIT+ | 功能描述:界面開發(fā)工具 MAX14502 Eval Kit RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| MAX14503AEWN+ | 制造商:Maxim Integrated Products 功能描述: |
| MAX14503ETL+ | 制造商:Maxim Integrated Products 功能描述: |
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