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參數資料
| 型號： | MAX14502AETL+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 1/41頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CARD READER USB-SD 40-TQFN |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 應用： | 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 |
| 供應商設備封裝： | 40-TQFN-EP（5x5） |
| 包裝： | 帶卷 (TR) |
| 安裝類型： | 表面貼裝 |
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General Description
The MAX14500–MAX14503 USB-to-SD card readers
provide a means for portable devices that support full-
speed USB communication (12Mbps) with one or two
SD card slots, upgrading the USB SD card reader func-
tion to USB Hi-Speed (480Mbps) operation. The
MAX14500–MAX14503 have two modes of operation:
Pass Thru and Card Reader. In pass thru, the SD and
USB signals pass through the MAX14500–MAX14503
without modification, appearing like the device is not
present. The host microprocessor firmware does not
need modification, as there is no change from the host
microprocessor’s perspective. In Card Reader mode,
the MAX14500–MAX14503 implement a Hi-Speed USB
card reader that operates independently of the host
microprocessor. All the capabilities of the full-speed
USB port and SD card slot are preserved with the addi-
tional feature that allows a faster way for a PC to read or
write to the SD card. The MAX14500–MAX14503 sup-
port SD high capacity SDHC cards. The 40-pin TQFN
version supports one SD card, while the 56-bump WLP
version supports two SD cards.
The MAX14500–MAX14503 feature advanced power-
saving modes to reduce power consumption in
portable applications. The low-power Sleep modes
allow the ability to disable internal circuit blocks, pro-
viding power-saving operating modes. The default
clock input for each part number is specified in the
ordering information. The MAX14500–MAX14503 fea-
ture the option to change the default values using the
I2C interface.
The MAX14500–MAX14503 are available in 5mm x
5mm, 40-pin TQFN, and 3.23mm x 3.5mm, 56-bump
WLP packages. These devices operate over a wide
supply voltage range and are specified over the -40°C
to +85°C extended temperature range.
Features
USB 2.0 Hi-Speed and Full-Speed Compliant
SDHC Card Support
Internal Hi-Speed USB SD Card Reader Eases
Host P Overhead
On-Chip Termination and Pullup Resistors
Internal SD Switches Allow For Multiplexing Two
SD Cards on a Single-Microprocessor SD Port
Accommodates Clock Input Frequencies
26MHz, 19.2MHz, 13MHz, and 12MHz
Internal Clock Squarer for Low-Amplitude TCXO
Signals
No Power-Supply Sequencing Required
Compatible with +1.8V to +3.3V I/O Host
Microprocessor
Simple Control Mode Requires Only a Single
GPIO
I2C Control Provides Multiple Configuration
Options
I2C Control Required for Two SD Cards
On-Chip Power-On Reset/Brown-Out Reset
MAX14500–MAX14503
Hi-Speed USB-to-SD Card
Readers with Bypass
________________________________________________________________
Maxim Integrated Products
1
Ordering Information/
Selector Guide
19-4117; Rev 1; 4/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
EVALUATION
KIT
AVAILABLE
PART
INPUT
FREQUENCY
(MHz)
SD
CARDS
PIN-
PACKAGE
MAX14500ETL+*
12
1
40 TQFN-EP**
MAX14500AEWN+*
12
2
56 WLP
MAX14501ETL+*
13
1
40 TQFN-EP**
MAX14501AEWN+*
13
2
56 WLP
MAX14502AETL+
19.2
1
40 TQFN-EP**
MAX14502AEWN+*
19.2
2
56 WLP
MAX14503ETL+*
26
1
40 TQFN-EP**
MAX14503AEWN+*
26
2
56 WLP
Applications
Cell Phones
PDAs
MP3 Players
Digital Still Cameras
GPS
Note: All devices are specified over the -40°C to +85°C oper-
ating temperature range.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
*
Future product—contact factory for availability.
**
EP = Exposed pad.
SD is a trademark of the SD Card Association.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX14502EVKIT+ | 功能描述:界面開發工具 MAX14502 Eval Kit RoHS:否 制造商:Bourns 產品: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: |
| MAX14504EWC+T | 功能描述:模擬開關 IC Dual SPDT Neg Rail w/ +/-VCC Cap RoHS:否 制造商:Texas Instruments 開關數量:2 開關配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
| MAX14505AEWC+ | 制造商:Maxim Integrated Products 功能描述:DUAL SPDT NEGATIVE RAIL ANALOG SWIT - Rail/Tube |
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