The model "FT230XS-R" is a product manufactured by FTDI Chip (Future Technology Devices International), which is known for its USB interface ICs. The FT230XS-R is a USB to UART bridge controller. It converts USB signals to UART ( Universal Asynchronous Receiver Transmitter ) signals and is commonly used in embedded systems to interface with serial devices over USB.
Regarding the detailed specifications of this chip, including pin functions, packaging, and FAQs, here is the breakdown:
Pin Functions and Circuit Principle
The FT230XS-R is a QFN-28 (Quad Flat No-lead, 28 pins) package, which has a total of 28 pins. Each pin has specific functions related to USB communication, UART communication, Power supply, and other auxiliary features.
Pin Function Table for FT230XS-R: Pin No. Pin Name Function Description 1 VBUS USB Bus Power Input. Provides 5V from the USB host. 2 D- USB Data Minus (USB differential signal). 3 D+ USB Data Plus (USB differential signal). 4 GND Ground. Provides a common reference for the chip. 5 VCC Power supply input. Typically 3.3V or 5V depending on the configuration. 6 RTS# Request to Send (UART signal, active low). 7 CTS# Clear to Send (UART signal, active low). 8 TXD Transmit Data (UART output, used to send data). 9 RXD Receive Data (UART input, used to receive data). 10 DTR# Data Terminal Ready (UART signal, active low). 11 DSR# Data Set Ready (UART signal, active low). 12 DCD# Data Carrier Detect (UART signal, active low). 13 RI# Ring Indicator (UART signal, active low). 14 SUSPEND USB Suspend Indicator (indicates USB suspend mode). 15 SHDN Shutdown Pin (active low to power down the chip). 16 VBUS_SENSE USB Bus Voltage Sense (monitors USB bus voltage). 17 NC No Connection (used for internal connections, not externally connected). 18 NC No Connection (same as above). 19 NC No Connection (same as above). 20 NC No Connection (same as above). 21 NC No Connection (same as above). 22 NC No Connection (same as above). 23 NC No Connection (same as above). 24 NC No Connection (same as above). 25 NC No Connection (same as above). 26 NC No Connection (same as above). 27 NC No Connection (same as above). 28 NC No Connection (same as above).This table details each of the 28 pins, where "NC" refers to "No Connection," meaning these pins are not used externally.
Circuit Principle
The FT230XS-R is designed to handle USB to UART communication. It converts USB data into UART signals, which are suitable for communication with devices that use UART as their communication protocol (such as sensors, modems, or microcontrollers). The chip is powered by the 5V USB bus (via VBUS) and interfaces with the host system using the USB D+ and D- differential pair. UART signals such as TXD, RXD, RTS#, and CTS# are the primary data channels for communication with serial devices. The pinout is carefully designed to allow for standard serial communication, flow control, and power management.FT230XS-R Pinout FAQ
Here are 20 frequently asked questions (FAQ) regarding the FT230XS-R, presented in Q&A format:
1. What is the function of the VBUS pin on the FT230XS-R? The VBUS pin is used to provide 5V power from the USB host to the FT230XS-R.
2. How is the D+ and D- pin used in the FT230XS-R? D+ and D- are USB data lines used for bidirectional communication between the FT230XS-R and the USB host.
3. What voltage does the FT230XS-R operate at? The FT230XS-R typically operates at 3.3V or 5V, depending on the configuration of the device.
4. What is the function of the TXD pin on the FT230XS-R? The TXD pin is used to transmit serial data from the FT230XS-R to an external UART device.
5. What is the function of the RXD pin on the FT230XS-R? The RXD pin is used to receive serial data from an external UART device into the FT230XS-R.
6. How do RTS# and CTS# function in the FT230XS-R? RTS# and CTS# are used for hardware flow control in UART communication. RTS# signals the request to send data, and CTS# indicates whether the device is ready to receive data.
7. What is the function of the SHDN pin on the FT230XS-R? The SHDN pin is used to shut down the FT230XS-R, putting it into a low-power state when active low.
8. Can the FT230XS-R be used with both 3.3V and 5V systems? Yes, the FT230XS-R can interface with systems operating at either 3.3V or 5V, as long as the appropriate voltage levels are applied to the VCC pin.
9. What is the purpose of the VBUSSENSE pin? The VBUSSENSE pin monitors the USB bus voltage to detect the presence of a USB host connection.
10. Can the FT230XS-R be used in both USB host and device configurations? No, the FT230XS-R is a USB device and can only operate as a USB peripheral, not a host.
11. How does the FT230XS-R handle USB suspend mode? The SUSPEND pin indicates when the FT230XS-R is in USB suspend mode, which typically happens when the USB host is idle.
12. What is the function of the DTR# pin? DTR# is the Data Terminal Ready signal used in serial communication to indicate the readiness of the terminal.
13. How does the FT230XS-R handle power supply? The FT230XS-R is powered through the VBUS pin (5V) from the USB bus, and it can also use the VCC pin for additional power.
14. What is the role of the DSR# pin? DSR# is the Data Set Ready signal, which is used in flow control to indicate that the remote device is ready to exchange data.
15. How does the FT230XS-R interface with a microcontroller? The FT230XS-R interfaces with a microcontroller via the UART pins (TXD, RXD, CTS#, RTS#), enabling serial communication.
16. Is the FT230XS-R compatible with USB 2.0? Yes, the FT230XS-R is fully compliant with USB 2.0 and can be used with any USB 2.0 host controller.
17. What is the function of the RI# pin? The RI# pin is the Ring Indicator used in modem communication to indicate the presence of an incoming call.
18. How do I configure the FT230XS-R? Configuration is done via the USB interface and the appropriate drivers, usually managed by the FTDI D2XX driver or a virtual COM port driver.
19. What is the maximum data transfer rate of the FT230XS-R? The FT230XS-R supports data transfer rates up to 3 Mbps, depending on the USB connection and external device capabilities.
20. What should I do if the FT230XS-R is not recognized by the host? Ensure the appropriate FTDI drivers are installed and check the USB connection and power supply to ensure the FT230XS-R is correctly powered and connected.
These explanations and FAQ provide a comprehensive understanding of the FT230XS-R's functionality and practical use.