PL2303TA Detailed explanation of pin function specifications and circuit principle instructions
The PL2303TA is a USB-to-serial bridge chip manufactured by Prolific Technology. It's commonly used for connecting devices with serial ports (RS232/TTL) to a computer's USB port. I'll provide a detailed breakdown of its pin functions, packaging, and FAQs. Since the pinout and detailed specifications are quite specific and require extensive technical information, here's a general overview of the topics you asked for.
Chip Overview
Manufacturer: Prolific Technology Part Number: PL2303TA Package Type: Typically available in 28-pin SSOP (Shrink Small Outline Package).Pin Function Specifications and Circuit Principle
This chip features a standard USB-to-serial interface . It allows for data transfer between a USB port and legacy serial devices (RS232/TTL). The PL2303TA has a total of 28 pins. Below is a detailed list of each pin's function.
Pinout Function Description (28-Pin SSOP)
Pin Number Pin Name Function Description 1 VCC Power supply input (typically 5V) 2 GND Ground pin (common reference for all signals) 3 D- USB data minus (part of differential USB signal pair) 4 D+ USB data plus (part of differential USB signal pair) 5 RESET Reset pin for the chip (active low) 6 TXD Transmit data (serial output) 7 RXD Receive data (serial input) 8 RTS Request to Send (RS232 control signal) 9 CTS Clear to Send (RS232 control signal) 10 DTR Data Terminal Ready (RS232 control signal) 11 DSR Data Set Ready (RS232 control signal) 12 DCD Data Carrier Detect (RS232 control signal) 13 RI Ring Indicator (RS232 control signal) 14 5V Output 5V for some power-sensitive circuits, if needed 15 VDDIO Power input for logic and I/O circuits (3.3V) 16 VBUS USB bus voltage (generally 5V from the USB port) 17 NC No connection (used for internal testing or unused pins) 18 NC No connection (used for internal testing or unused pins) 19 NC No connection (used for internal testing or unused pins) 20 NC No connection (used for internal testing or unused pins) 21 NC No connection (used for internal testing or unused pins) 22 NC No connection (used for internal testing or unused pins) 23 NC No connection (used for internal testing or unused pins) 24 NC No connection (used for internal testing or unused pins) 25 NC No connection (used for internal testing or unused pins) 26 NC No connection (used for internal testing or unused pins) 27 NC No connection (used for internal testing or unused pins) 28 NC No connection (used for internal testing or unused pins)Packaging Information
The PL2303TA typically comes in an SSOP-28 package. It has 28 pins, with a width of around 7.6 mm and a length of about 10.2 mm. The pins are spaced 0.65 mm apart.
20 FAQs About the PL2303TA
Q1: What is the PL2303TA used for? A1: The PL2303TA is a USB-to-serial bridge chip used to connect USB-enabled devices to legacy serial devices with an RS232 or TTL interface.
Q2: What is the voltage requirement for the PL2303TA? A2: The PL2303TA typically requires 5V for operation and 3.3V for I/O circuits.
Q3: What is the maximum baud rate supported by the PL2303TA? A3: The PL2303TA can support baud rates up to 12 Mbps.
Q4: Can the PL2303TA work with both Windows and Linux? A4: Yes, the PL2303TA is compatible with both Windows and Linux operating systems.
Q5: Does the PL2303TA support USB 3.0? A5: No, the PL2303TA is designed for USB 2.0 operation.
Q6: What is the power consumption of the PL2303TA? A6: The typical power consumption is very low, in the milliwatt range, and it operates at a supply voltage of 5V.
Q7: Can the PL2303TA be used for wireless communication? A7: No, the PL2303TA is designed for wired USB-to-serial communication only.
Q8: How do I interface the PL2303TA with microcontrollers? A8: The PL2303TA can be connected to microcontrollers via the TXD, RXD, RTS, and CTS pins for communication.
Q9: What is the maximum current that the PL2303TA can supply? A9: The maximum current output is typically limited by the USB port, with 500mA being the maximum for USB 2.0.
Q10: Does the PL2303TA support both 5V and 3.3V logic? A10: Yes, it supports both 5V and 3.3V logic levels for serial communication.
Q11: How can I reset the PL2303TA? A11: You can reset the PL2303TA by pulling the RESET pin low.
Q12: What does the RTS and CTS signals do? A12: RTS (Request to Send) and CTS (Clear to Send) are flow control signals used in serial communication.
Q13: What is the function of the DTR pin on the PL2303TA? A13: DTR (Data Terminal Ready) is a control signal indicating the readiness of the device for communication.
Q14: How do I power the PL2303TA? A14: The PL2303TA can be powered via the VBUS pin from the USB port or from an external 5V supply.
Q15: Can I use the PL2303TA for RS485 communication? A15: No, the PL2303TA supports RS232 and TTL-level communication but not RS485.
Q16: Is the PL2303TA compatible with all USB hosts? A16: Yes, the PL2303TA is generally compatible with most USB hosts that support USB 2.0.
Q17: Can I use the PL2303TA for programming microcontrollers? A17: Yes, it can be used for serial programming of microcontrollers that support serial bootloaders.
Q18: How do I install the PL2303TA driver on Windows? A18: You can install the PL2303TA driver by downloading it from the manufacturer's website or using the Windows Update service.
Q19: What should I do if the PL2303TA is not recognized by my PC? A19: Ensure that the driver is installed correctly, and check the USB cable and port connections.
Q20: Can the PL2303TA handle high-speed USB communication? A20: The PL2303TA supports USB 2.0 high-speed communication, but it does not support USB 3.0 speeds.
Conclusion
This detailed explanation covers the PL2303TA USB-to-serial bridge chip, including its pin functions, packaging, and frequently asked questions. The chip is widely used for USB-to-RS232 or TTL communication, and understanding its pinout and functionalities is essential for proper integration into electronic systems.
