ALFAT-SD-338 GHI Electronics, ALFAT-SD-338 Datasheet - Page 12

• Manufacturer Part Number: ALFAT-SD-338
• Description: Memory IC Development Tools ALFAT SD / MMC OEM BOARD
• Manufacturer: GHI Electronics

Specifications of ALFAT-SD-338

• Rohs: yes
• Product: SD Board
• Tool Is For Evaluation Of: SD, SDHC, MMC Cards
• Memory Type: Flash
• Operating Supply Voltage: 3.3 V
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Part # Aliases: GHI-ALFAT-SD-338

Note: All pins have internal weak pull ups, leaving them unconnected is safe.
GHI Electronics
Rev. 1.13
Pin Name
41 ULPI_19_2MHZ
42 UART_TX
43
44 USB0_DM
45 USB0_DP
46 NC
47 VCAP_2
48 VDD3
49 NC
50 SPI_SSEL
51 SD_D2
52 SD_D3
53 SD_CLK
54 SD_CMD
55 SPI_SCK
56 NC
57 USB1_ULPI_D7
58 I2C_SCL
59 I2C_SDA
60 BOOT0
61 NC
62 NC
63 VSS2
64 VDD4
UART_RX
SPI_BUSY
I2C_BUSY
Description
This pin generates 19.2MHz clock. It is usually used to clock
USB High Speed PHY
TX UART interface, 5V tolerant
RX UART interface BUSY pin for SPI and I2C, 5V tolerant
Add a 10K resistor between this pin and VDD
Data Minus, USB Port 0. Add 22ohm resistor in series
Data Plus, USB Port 0. Add a 22ohm resistor in series
Should not be connected
Connect to a 22uF to ground
Power, 3.3V
Should not be connected
SSEL SPI interface, 5V tolerant
D0, 4-bit SD Bus. Add a 47K resistor between this pin and VDD
D1, 4-bit SD Bus. Add a 47K resistor between this pin and VDD
CLK, 4-bit SD Bus
CMD, 4-bit SD Bus. Add a 47K resistor between this pin and
VDD
SCK SPI interface, 5V tolerant
Should not be connected
USB High Speed PHY signal. Add a 10K resistor to VDD.
Only add10K resistor if HS PHY is not used
SCL I2C Interface
SDA I2C Interface
Should not be connected. It is safe to have pull up or down
resistor on this pin.
Should not be connected
Should not be connected
Ground
Power, 3.3V
Page 12 of 51
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Package and Pin-Out
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