MAX14502AETL+ Maxim Integrated Products, MAX14502AETL+ Datasheet

IC CARD READER USB-SD 40-TQFN

MAX14502AETL+

Manufacturer Part Number
MAX14502AETL+
Description
IC CARD READER USB-SD 40-TQFN
Manufacturer
Maxim Integrated Products
Type
Smart Card Interface ICr
Datasheet

Specifications of MAX14502AETL+

Applications
USB
Interface
I²C
Voltage - Supply
1.8 V ~ 3.3 V
Package / Case
40-TQFN Exposed Pad
Mounting Type
Surface Mount
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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
I
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.
19-4117; Rev 1; 4/09
SD is a trademark of the SD Card Association.
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.
2
C interface.
Cell Phones
PDAs
MP3 Players
Digital Still Cameras
GPS
________________________________________________________________ Maxim Integrated Products
General Description
Applications
Hi-Speed USB-to-SD Card
♦ USB 2.0 Hi-Speed and Full-Speed Compliant
♦ SDHC Card Support
♦ Internal Hi-Speed USB SD Card Reader Eases
♦ On-Chip Termination and Pullup Resistors
♦ Internal SD Switches Allow For Multiplexing Two
♦ Accommodates Clock Input Frequencies
♦ Internal Clock Squarer for Low-Amplitude TCXO
♦ No Power-Supply Sequencing Required
♦ Compatible with +1.8V to +3.3V I/O Host
♦ Simple Control Mode Requires Only a Single
♦ I
♦ I
♦ On-Chip Power-On Reset/Brown-Out Reset
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.
MAX14500ETL+*
MAX14500AEWN+*
MAX14501ETL+*
MAX14501AEWN+*
MAX14502AETL+
MAX14502AEWN+*
MAX14503ETL+*
MAX14503AEWN+*
Host µP Overhead
SD Cards on a Single-Microprocessor SD Port
Signals
Microprocessor
GPIO
Options
2
2
C Control Provides Multiple Configuration
C Control Required for Two SD Cards
Readers with Bypass
26MHz, 19.2MHz, 13MHz, and 12MHz
PART
FREQUENCY
Ordering Information/
INPUT
(MHz)
19.2
19.2
12
12
13
13
26
26
Selector Guide
CARDS
SD
1
2
1
2
1
2
1
2
Features
40 TQFN-EP**
40 TQFN-EP**
40 TQFN-EP**
40 TQFN-EP**
PACKAGE
56 WLP
56 WLP
56 WLP
56 WLP
PIN-
1

Related parts for MAX14502AETL+

MAX14502AETL+ Summary of contents

Page 1

... C Control Required for Two SD Cards ♦ On-Chip Power-On Reset/Brown-Out Reset PART MAX14500ETL+* MAX14500AEWN+* MAX14501ETL+* Applications MAX14501AEWN+* MAX14502AETL+ MAX14502AEWN+* MAX14503ETL+* MAX14503AEWN+* 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. ...

Page 2

Hi-Speed USB-to-SD Card Readers with Bypass ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) V ...........................................................................-0. ...........................................................................-0. ............................................................................-0. ...........................................................................-0.3V to +4V TM KVBUS......................................................................-0.3V to +4V CLDO........................................................................-0.3V to +2V ...

Page 3

ELECTRICAL CHARACTERISTICS (continued +2.4V to +3.6V +2.4V to +3.6V noted. Typical values are +3.3V PARAMETER SYMBOL MODE, I2C_SEL, ADD, RST Input-Voltage High BUSY, BERR/INT Output-Voltage Low BUSY, BERR/INT ...

Page 4

Hi-Speed USB-to-SD Card Readers with Bypass ELECTRICAL CHARACTERISTICS (continued +2.4V to +3.6V +2.4V to +3.6V noted. Typical values are +3.3V PARAMETER SYMBOL Input High Voltage Input Low Voltage ...

Page 5

ELECTRICAL CHARACTERISTICS (continued +2.4V to +3.6V +2.4V to +3.6V noted. Typical values are +3.3V PARAMETER SYMBOL Clock Low Period t LOW_I2C Clock High Period t HIGH_I2C Setup Time ...

Page 6

Hi-Speed USB-to-SD Card Readers with Bypass USB FULL-SPEED SOURCE ELECTRICAL CHARACTERISTICS (V = +2.4V to +3.6V +2.4V to +3.6V noted. Typical values are +3.3V PARAMETER SYMBOL DC CHARACTERISTICS SE Receiver ...

Page 7

V = +2.5V +2.5V HI-SPEED EYE DIAGRAM FOR CARD READER MODE UNIT TIME INTERVAL SD CHANNEL ON-RESISTANCE vs. SD CHANNEL COMMON VOLTAGE + ...

Page 8

Hi-Speed USB-to-SD Card Readers with Bypass (V = +3.3V +2.5V +2.5V PASS THRU V SUPPLY CURRENT CC vs. TEMPERATURE 10 NO CLOCK -40 - ...

Page 9

PIN NAME TQFN WLP INPUTS/OUTPUTS 1 C4 I2C_SEL 2 A2 SCL 3 B4 SDA 4 A3 ADD BERR/INT 6 B6 BUSY MODE RST FREF 27 F5 RREF USB INTERFACE 22 G7 CD+ ...

Page 10

Hi-Speed USB-to-SD Card Readers with Bypass PIN NAME TQFN WLP 10 A8 CDAT1_3 34 E2 CCMD1 32 E3 CCLK1 33 F1 CCRD_PRST 17 D7 HDAT1_0 16 D8 HDAT1_1 15 D6 HDAT1_2 14 D5 HDAT1_3 31 G1 HCMD1 29 G2 HCLK1 ...

Page 11

PIN NAME TQFN WLP — C5 HDAT2_2 — A4 HDAT2_3 — G4 HCMD2 — G3 HCLK2 POWER SUPPLY B1, B2 CLDO 39 B3 18, ...

Page 12

Hi-Speed USB-to-SD Card Readers with Bypass CCRD_PRST CCLK1 CCMD1 4 CDAT1_[3: CLDO RREF KVBUS VBUS CD+ D+ USB CONNECTOR CD- D- GND Figure 1. Typical Application Circuit for Simple Control Mode with One ...

Page 13

CCRD_PRST CCLK1 CCMD1 4 CDAT1_[3: CLDO RREF KVBUS VBUS CD+ D+ USB CONNECTOR CD- D- GND Figure 2. Typical Application Circuit for I ______________________________________________________________________________________ Hi-Speed USB-to-SD Card Readers with Bypass CONTROL ...

Page 14

Hi-Speed USB-to-SD Card Readers with Bypass VBUS D+ USB CONNECTOR D- GND Figure 3. Typical Application Circuit for I 14 ______________________________________________________________________________________ CONTROL SD PORT 2 SWITCHES CCLK2 CCMD2 CDAT2_[3:0] SD PORT ...

Page 15

VBUS D+ USB CONNECTOR D- GND Figure 4. Typical Application Circuit for I ______________________________________________________________________________________ Hi-Speed USB-to-SD Card Readers with Bypass CONTROL SD PORT 2 SWITCHES CCLK2 CCMD2 CDAT2_[3:0] SD PORT 1 ...

Page 16

Hi-Speed USB-to-SD Card Readers with Bypass CLOCK INPUT OUTPUT SHADED AREAS ARE NOT VALID Figure 5a. SD Card Default Timing Diagram 16 ______________________________________________________________________________________ TLH THL t t ISU IH t (max) ODLY ...

Page 17

CCLK1 CCLK2 CDAT1 _[3:0], CDAT2_[3:0], CCMD1, CCMD2 (READ) CDAT1 _[3:0], CDAT2_[3:0], CCMD1, CCMD2 (WRITE) Figure 5b. SD Card Hi-Speed Timing Diagram ______________________________________________________________________________________ Hi-Speed USB-to-SD Card Readers with Bypass Timing Diagrams (continued) f ...

Page 18

Hi-Speed USB-to-SD Card Readers with Bypass SDA t SU,DAT t LOW_I2C t HIGH_I2C SCL t HD,STA t R_I2C START CONDITION 2 Figure Timing Diagram Detailed Description The MAX14500–MAX14503 can be added to devices that have an SD ...

Page 19

Table 1. Power-Up Default Mini Register Map for Configuration Registers REGISTER REGISTER NAME ADDRESS (hex) Control Register 0x00 (CONTROL) Configuration Register 1 0x01 (CONFIG1) Configuration Register 2 0x02 (CONFIG2) Configuration Register 3 0x03 (CONFIG3) Interrupt Enable Register 1 0x04 (IE1) ...

Page 20

Hi-Speed USB-to-SD Card Readers with Bypass CCLK2 CCMD2 SD SLOT2 4 CDAT2_[3:0] CCRD_PRST CCLK1 SD CCMD1 SLOT1 4 CDAT1_[3:0] D+ CD+ USB CONNECTOR D- CD- Figure 7. Default Startup (Pass Thru Mode) Default Power-Up (Pass Thru Mode) In the default ...

Page 21

CCLK2 CCMD2 SD SLOT2 4 CDAT2_[3:0] CCRD_PRST CCLK1 SD CCMD1 SLOT1 4 CDAT1_[3:0] D+ CD+ USB CONNECTOR D- CD- Figure 8. Card Reader Mode. The USB port is connected to SD card 1. In the 2 port version, a second ...

Page 22

Hi-Speed USB-to-SD Card Readers with Bypass PASS THRU IF ASLEEP REQUEST TO ENTER CARD READER IF AWAKE • DISCONNECT SD SWITCHES FOR CARD READER • ENUMERATE SD CARD • OPEN USB SWITCHES • ASSERT BUSY • SET BUSY FLAG • ...

Page 23

CCRD_PRST CCLK1 SD CCMD1 SLOT 1 4 CDAT1_[3:0] D+ CD+ USB CONNECTOR D- CD- Figure 10. I2C_SEL Connected Low to Enable Simple Control and MODE = 0 to Enable Pass Thru Control Register (0x00) The control register controls the settings ...

Page 24

Hi-Speed USB-to-SD Card Readers with Bypass Table 2. Control Register (0x00) BIT DESCRIPTION [7:5] RESERVED SD PORT 2 ANALOG SWITCHES SD Port set of six analog switches connecting the SD port to the SD card. This set ...

Page 25

CCRD_PRST CCLK1 SD CCMD1 SLOT 1 4 CDAT1_[3:0] D+ CD+ USB CONNECTOR D- CD- Figure 11. I2C_SEL is connected low to enable simple control and MODE = 1 to enable Card Reader mode for SD card 1. In simple control, ...

Page 26

Hi-Speed USB-to-SD Card Readers with Bypass NOTE: THIS IS VALID FOR I C CONTROL ONLY Figure 12. Typical Interrupt Servicing Flowchart Drive RST low to reset all the registers to the default value and minimize the supply ...

Page 27

TCXO sig- nals (down to 200mV), and a PLL with fixed dividers. The PLL sub system can be configured using the I interface. The complete ...

Page 28

Hi-Speed USB-to-SD Card Readers with Bypass SDA SCL DATA LINE STABLE; DATA VALID Figure 14. Bit Transfer START CONDITION SCL SDA BY TRANSMITTER SDA BY RECEIVER S Figure 15. Acknowledge SDA 1 1 MSB SCL Figure 16. Slave Address One ...

Page 29

ADDRESS = 0xE0 REGISTER 0x01 WRITE DATA Figure 17. Format for I C Write. In this example the register 0x01 is written. ADDRESS = 0xE0 ...

Page 30

Hi-Speed USB-to-SD Card Readers with Bypass ADDRESS = 0xE0 ADDRESS = 0xE1 Figure 19. Format for Reading ADDRESS = 0xE0 ADDRESS = 0xE1 S 1 ...

Page 31

MECHANICAL CARD DETECT SWITCH SD CARD MECHANICAL CARD DETECT SWITCH SD CARD Figure 21. Host Card Detection Schemes The SD port analog switches change states immediately whether the MAX14500–MAX14503 are in Sleep mode (WAKEUP = 0) or awake. If the ...

Page 32

Hi-Speed USB-to-SD Card Readers with Bypass Power-Supply Modes The MAX14500–MAX14503 have four power-supply inputs (Table 6). Bypass high-frequency, surface-mount ceramic capacitors as close as possible to the supply pins. Table 6. Power-Supply Inputs SUPPLY FUNCTION ...

Page 33

READ FIELD NAME WRITE CONTROL: Control Register (0x00) RFU R/W SD2SW R/W SD1SW R/W MODE R/W WAKEUP R/W CONFIG1: Configuration Register 1 (0x01) SD2ONEBIT R/W SD1ONEBIT R/W INTPULSE R/W INTACTHI R/W RFU R/W CONFIG2: Configuration Register 2 (0x02) RFU R/W ...

Page 34

Hi-Speed USB-to-SD Card Readers with Bypass READ FIELD NAME WRITE FORCEFS R/W RFU R/W CONFIG3: Configuration Register 3 (0x03) SD2MAXCLK R/W SD1MAXCLK R/W IE1: Interrupt Enable Register 1 (0x04) RFU R/W USBFS R/W USBSR R/W VTM R/W VSD R/W KVBUS ...

Page 35

... Bits 15–8 of USB vendor ID reported during card reader enumeration. If this register is written, the written [7:0] 0x00 value is used for USB enumeration, otherwise a default VID of 0x06BA (Maxim Integrated Products) is used. Bits 7–0 of USB vendor ID reported during card reader enumeration. If this register is written, the written value [7:0] 0x00 is used for USB enumeration, otherwise a default VID of 0x06BA (Maxim Integrated Products) is used ...

Page 36

Hi-Speed USB-to-SD Card Readers with Bypass READ FIELD NAME WRITE Test Register (0x0E) Test Register R/W FWP: Firmware Portal (0x0F) Firmware Portal R/W IRQ1: Interrupt Request Register 1 (0x10) RFU R USBFS R USBSR R VTM R VSD R VBUS ...

Page 37

READ FIELD NAME WRITE SDSTAT R STATUS2: Status Register 2 (0x13) RFU R FWUGRRH: Firmware Upgrade Response Data High Byte (0x14) High Byte of Response R Data FWUPGRL: Firmware Upgrade Response Data Low Byte (0x15) Low Byte of Response R ...

Page 38

Hi-Speed USB-to-SD Card Readers with Bypass CLK CCLK2 CMD CCMD2 DAT 0 CDAT 2_0 SD INTERFACE DAT 1 CDAT 2_1 NAND FLASH DAT 2 CDAT 2_2 DAT 3 CDAT 2_3 SD_DETECT CCRD_PRST CLK CCLK 1 CMD CCMD 1 DAT 0 ...

Page 39

TOP VIEW HCMD1 31 CCLK1 32 CCRD_PRST 33 CCMD1 34 N.C. 35 N.C. 36 GND 37 CLDO *CONNECT EXPOSED ...

Page 40

Hi-Speed USB-to-SD Card Readers with Bypass TOP VIEW 8 (BUMPS ON BOTTOM) CDAT1_3 CDAT1_1 CDAT1_0 CDAT1_2 HDAT1_1 HDAT1_0 GND HD- HD+ Chip Information PROCESS: CMOS 40 ______________________________________________________________________________________ Pin Configurations (continued MAX14500–MAX14503 HDAT2_3 BUSY V CDAT2_3 IO ...

Page 41

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 41 © 2009 Maxim Integrated Products ...

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