The FT2232HL-REEL is a USB to UART/FIFO interface IC produced by FTDI (Future Technology Devices International Ltd.). It's commonly used for applications requiring USB communication and provides features such as USB-to-serial communication, low-power consumption, and flexibility in terms of functionality.
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1. Package Type for FT2232HL-REEL:
Package Type: The FT2232HL-REEL typically comes in a LQFP (Low-profile Quad Flat Package) package. Pin Count: The package has 48 pins.2. Pin Function Specifications and Circuit Principle:
The FT2232HL-REEL package has 48 pins, each with specific functions. Below is a detailed list of all 48 pins with their functions:
Pin Number Pin Name Function Description 1 VCCIO1 3.3V or 5V power input for IO1 (Selectable) 2 VCCIO2 3.3V or 5V power input for IO2 (Selectable) 3 GND Ground for device power and signals 4 GND Ground for device power and signals 5 ADBUS0 Data bus, A side (D0) for data communication 6 ADBUS1 Data bus, A side (D1) for data communication 7 ADBUS2 Data bus, A side (D2) for data communication 8 ADBUS3 Data bus, A side (D3) for data communication 9 ADBUS4 Data bus, A side (D4) for data communication 10 ADBUS5 Data bus, A side (D5) for data communication 11 ADBUS6 Data bus, A side (D6) for data communication 12 ADBUS7 Data bus, A side (D7) for data communication 13 ADIR Direction control for data bus A 14 AOE Output enable for data bus A 15 GND Ground for device power and signals 16 REVID Revision ID for device identification 17 TXD1 Transmit Data for UART 1 (TX) 18 RXD1 Receive Data for UART 1 (RX) 19 RTS1 Request to Send for UART 1 20 CTS1 Clear to Send for UART 1 21 TXD2 Transmit Data for UART 2 (TX) 22 RXD2 Receive Data for UART 2 (RX) 23 RTS2 Request to Send for UART 2 24 CTS2 Clear to Send for UART 2 25 TMS JTAG Test Mode Select 26 TDI JTAG Test Data Input 27 TDO JTAG Test Data Output 28 TCK JTAG Test Clock 29 TRST JTAG Test Reset 30 VCCIO2 IO power for side 2 (3.3V or 5V) 31 TDI JTAG Test Data Input (for JTAG interface) 32 TDO JTAG Test Data Output (for JTAG interface) 33 TMS JTAG Test Mode Select (for JTAG interface) 34 TCK JTAG Test Clock (for JTAG interface) 35 DSR1 Data Set Ready for UART 1 36 DTR1 Data Terminal Ready for UART 1 37 DSR2 Data Set Ready for UART 2 38 DTR2 Data Terminal Ready for UART 2 39 SLEEP Sleep mode control (puts the device into a low-power state) 40 IOREF Reference voltage for IO (typically 3.3V or 5V) 41 C0 Control signal 0 (varies depending on usage) 42 C1 Control signal 1 (varies depending on usage) 43 C2 Control signal 2 (varies depending on usage) 44 C3 Control signal 3 (varies depending on usage) 45 A4 Address bus, side A (for communication) 46 A5 Address bus, side A (for communication) 47 A6 Address bus, side A (for communication) 48 A7 Address bus, side A (for communication)3. FAQ for FT2232HL-REEL Pin Functions:
1. What is the voltage range for the FT2232HL-REEL? The FT2232HL-REEL operates with a voltage range of 3.3V to 5V, depending on the IO voltage used.
2. What is the primary purpose of the FT2232HL-REEL? The FT2232HL-REEL is a USB to serial/FIFO interface chip, designed to provide reliable USB communication between a host device and serial peripherals.
3. Can I use FT2232HL-REEL for both UART and FIFO communication? Yes, the FT2232HL-REEL supports both UART and FIFO communication, allowing flexible interfacing with microcontrollers and other serial devices.
4. How many UART channels does the FT2232HL-REEL support? It supports two UART channels, labeled UART1 and UART2, each with independent TX, RX, RTS, and CTS lines.
5. Can I configure the FT2232HL-REEL in JTAG mode? Yes, the FT2232HL-REEL has JTAG functionality (via pins TDI, TDO, TMS, TCK, TRST) for debugging and programming purposes.
6. What is the function of pin GND? The GND pins (pins 3, 4, 15) are used for grounding the device, which provides a reference voltage for all the signals in the system.
7. How does the FT2232HL-REEL handle power? The device can be powered via the VCCIO pins (pins 1, 2, 30) and the main power supply pin, which can support either 3.3V or 5V depending on the user configuration.
8. What is the role of pin SLEEP? The SLEEP pin (pin 39) is used to put the FT2232HL-REEL into a low-power state when not in use.
9. How do I control the direction of data transfer on the A bus? The ADIR pin (pin 13) controls the direction of the data bus (A), and the AOE pin (pin 14) manages the output enable.
10. Does the FT2232HL-REEL support USB 2.0? Yes, the FT2232HL-REEL is compliant with USB 2.0 full-speed standards.
11. Can I use the FT2232HL-REEL to interface with a microcontroller? Yes, the FT2232HL-REEL can interface with microcontrollers using its UART or FIFO functions.
12. How can I configure the FT2232HL-REEL for 5V or 3.3V logic? You can configure the VCCIO pins to select either 5V or 3.3V logic, based on your system’s requirements.
13. What kind of applications can the FT2232HL-REEL be used in? The FT2232HL-REEL can be used in applications such as USB-to-serial converters, embedded systems, debugging tools, and programming devices.
14. What is the maximum data rate of the FT2232HL-REEL? The FT2232HL-REEL supports high-speed data rates, up to 12 Mbps for USB communication.
15. Can the FT2232HL-REEL be used for USB HID devices? No, the FT2232HL-REEL is designed for USB serial/FIFO communication and does not support HID directly.
16. What are the pin requirements for JTAG debugging? For JTAG debugging, the FT2232HL-REEL requires pins TDI, TDO, TMS, TCK, TRST.
17. How do I reset the FT2232HL-REEL? Reset the device using the TRST pin (pin 29), which is part of the JTAG reset functionality.
18. Can I drive the FT2232HL-REEL with a microcontroller? Yes, the FT2232HL-REEL can be easily driven by a microcontroller via the UART or FIFO interface.
**19. What is the role of the *RTS* and CTS pins?** The RTS (Request to Send) and CTS (Clear to Send) pins are used for flow control in UART communication, ensuring proper data transfer between devices.
20. How do I use the FIFO mode of the FT2232HL-REEL? To use the FIFO mode, configure the ADBUS pins for data transfer and the ADIR pin to control the direction of data flow.
This covers a comprehensive explanation of the FT2232HL-REEL's pin functions, package, and frequently asked questions. The pinout and functionality have been elaborated for clarity.