FT2232D -REEL Detailed explanation of pin function specifications and circuit principle instructions

The FT2232D is a product from FTDI (Future Technology Devices International). It is a USB-to-serial (UART) and USB-to-parallel interface integrated circuit (IC). The FT2232D is widely used for USB communication and is designed to be highly versatile for various applications, such as USB debugging, embedded system programming, and data transfer.

FT2232D Pinout and Package Information

The FT2232D typically comes in a LQFP-48 (Low-Profile Quad Flat Package, 48 pins) or TQFP-48 (Thin Quad Flat Package) depending on the variant and manufacturer. The detailed explanation of the 48 pins follows below.

FT2232D Pin Function Specification

The IC has 48 pins in total, and each pin has a specific function that allows users to interface with it for various purposes, such as data communication and signal processing.

Pin No. Pin Name Function 1 VCCIO Input Voltage Supply for I/O (3.3V or 5V based on configuration) 2 GND Ground Pin 3 VCC 3.3V or 5V Voltage Supply Pin 4 TXD0 Transmit Data, Channel 0 (Serial Output) 5 RXD0 Receive Data, Channel 0 (Serial Input) 6 RTS0 Request to Send, Channel 0 (Control Line) 7 CTS0 Clear to Send, Channel 0 (Control Line) 8 DTR0 Data Terminal Ready, Channel 0 (Control Line) 9 DSR0 Data Set Ready, Channel 0 (Control Line) 10 RI0 Ring Indicator, Channel 0 (Control Line) 11 CD0 Carrier Detect, Channel 0 (Control Line) 12 GND Ground Pin 13 TXD1 Transmit Data, Channel 1 (Serial Output) 14 RXD1 Receive Data, Channel 1 (Serial Input) 15 RTS1 Request to Send, Channel 1 (Control Line) 16 CTS1 Clear to Send, Channel 1 (Control Line) 17 DTR1 Data Terminal Ready, Channel 1 (Control Line) 18 DSR1 Data Set Ready, Channel 1 (Control Line) 19 RI1 Ring Indicator, Channel 1 (Control Line) 20 CD1 Carrier Detect, Channel 1 (Control Line) 21 TDI Test Data In (JTAG Port) 22 TDO Test Data Out (JTAG Port) 23 TMS Test Mode Select (JTAG Port) 24 TCK Test Clock (JTAG Port) 25 VCC 3.3V or 5V Voltage Supply Pin 26 GND Ground Pin 27 IRDYO IR Data Output (IrDA Interface) 28 IRDYN IR Data Input (IrDA Interface) 29 I2C SDA I2C Data (Serial Data) 30 I2C SCL I2C Clock (Serial Clock) 31 ACBUS0 ADBus Pin, Channel 0 (Parallel Interface) 32 ACBUS1 ADBus Pin, Channel 0 (Parallel Interface) 33 ACBUS2 ADBus Pin, Channel 0 (Parallel Interface) 34 ACBUS3 ADBus Pin, Channel 0 (Parallel Interface) 35 ACBUS4 ADBus Pin, Channel 0 (Parallel Interface) 36 ACBUS5 ADBus Pin, Channel 0 (Parallel Interface) 37 ACBUS6 ADBus Pin, Channel 0 (Parallel Interface) 38 ACBUS7 ADBus Pin, Channel 0 (Parallel Interface) 39 ACBUS8 ADBus Pin, Channel 1 (Parallel Interface) 40 ACBUS9 ADBus Pin, Channel 1 (Parallel Interface) 41 ACBUS10 ADBus Pin, Channel 1 (Parallel Interface) 42 ACBUS11 ADBus Pin, Channel 1 (Parallel Interface) 43 ACBUS12 ADBus Pin, Channel 1 (Parallel Interface) 44 ACBUS13 ADBus Pin, Channel 1 (Parallel Interface) 45 ACBUS14 ADBus Pin, Channel 1 (Parallel Interface) 46 ACBUS15 ADBus Pin, Channel 1 (Parallel Interface) 47 ACBUS16 ADBus Pin, Channel 1 (Parallel Interface) 48 ACBUS17 ADBus Pin, Channel 1 (Parallel Interface)

20 Common FAQs for FT2232D

1. What is the FT2232D?

The FT2232D is a dual-channel USB to serial/parallel converter IC from FTDI. It allows USB communication with embedded systems, enabling data transfer between USB devices and serial devices (UART) or parallel devices.

2. What is the pin count of the FT2232D?

The FT2232D has 48 pins in total.

3. What is the function of pin 1 (VCCIO)?

Pin 1 (VCCIO) provides the supply voltage for I/O signals. This voltage can be 3.3V or 5V, depending on the configuration.

4. How do I interface FT2232D with a microcontroller?

You can use the UART or parallel interface (ACBUS pins) of the FT2232D to communicate with a microcontroller. Ensure that voltage levels and signal integrity match the requirements of the microcontroller.

5. Can FT2232D support both USB and parallel interfaces simultaneously?

Yes, the FT2232D supports dual channels: one for UART communication and the other for parallel interface communication. Both can be used simultaneously.

6. What are the serial control lines available on FT2232D?

FT2232D provides RTS, CTS, DTR, DSR, RI, and CD control lines for each channel (Channel 0 and Channel 1).

7. What is the maximum baud rate supported by FT2232D?

FT2232D supports baud rates up to 3 Mbps.

8. Does FT2232D support IrDA (Infrared Data Association)?

Yes, the FT2232D supports IrDA infrared data transmission via pins IRDYO and IRDYN.

9. How can I use FT2232D for JTAG?

FT2232D provides a JTAG interface with TDI, TDO, TMS, and TCK pins for testing and debugging purposes.

10. What voltage levels are supported on the FT2232D?

The FT2232D can operate with 3.3V or 5V I/O logic levels, depending on the VCCIO configuration.

11. Can FT2232D be used to emulate USB devices?

Yes, FT2232D can be used for USB-to-UART or USB-to-parallel interface conversion, making it suitable for USB device emulation.

12. Is the FT2232D compatible with USB 3.0?

Yes, the FT2232D is backward compatible with USB 3.0, but it operates at USB 2.0 speeds.

13. What kind of devices can be connected to FT2232D?

FT2232D is suitable for connecting microcontrollers, sensors, debug interfaces, and devices requiring USB communication.

14. Can I configure the FT2232D to work in different modes?

Yes, FT2232D can be configured for multiple modes such as UART, FIFO, JTAG, and parallel interfaces.

15. What is the purpose of the ACBUS pins?

The ACBUS pins are used for parallel data communication, where the FT2232D can interface with parallel devices or circuits.

16. Does FT2232D provide power to connected devices?

The FT2232D can supply 3.3V or 5V to the connected I/O lines, depending on the configuration. However, external power may be needed for certain devices.

17. Can FT2232D be used for USB-to-TTL conversion?

Yes, FT2232D is often used for USB-to-TTL serial conversions, allowing users to interface USB with TTL devices.

18. How do I program the FT2232D?

Programming the FT2232D is done through the FTDI drivers and API (such as D2XX or FTDI USB drivers).

19. What is the power consumption of FT2232D?

FT2232D has low power consumption, typically consuming around 100mA of current during operation.

20. How do I troubleshoot FT2232D?

Check the driver installation, USB connection, and I/O pin configurations. Use diagnostic tools such as FTDI’s D2XX driver for debugging.