The CP2102N-A02-GQFN24R is a USB-to-UART bridge chip manufactured by Silicon Labs (also known as Silicon Laboratories). This chip is part of their CP2100 series and is used to convert USB signals to UART (Universal Asynchronous Receiver/Transmitter) signals, often used for communication in embedded systems and microcontrollers.
The package type of the CP2102N-A02-GQFN24R is a 24-pin QFN (Quad Flat No-lead) package, where the "24" refers to the number of pins in the package. Here is a detailed description of the pin functions and their use in the QFN24 package for this specific model.
Pin Functions Table for CP2102N-A02-GQFN24R
Pin Number Pin Name Pin Function Description 1 VBUS USB Bus Voltage Input: Power s the chip from the USB bus, typically 5V. 2 GND Ground: The reference ground for all signals. 3 RXD UART Receive Data: Input pin for serial data reception. 4 TXD UART Transmit Data: Output pin for serial data transmission. 5 RTS# UART Request to Send (Active Low): Indicates that the host device is ready to send data. 6 CTS# UART Clear to Send (Active Low): Indicates that the device can receive data. 7 DTR# UART Data Terminal Ready (Active Low): Signal from the UART that indicates the device is ready for communication. 8 DSR# UART Data Set Ready (Active Low): Signal to indicate that the device is ready for communication. 9 VDDIO I/O Voltage Supply: Provides the necessary voltage to the I/O pins (3.3V or 5V depending on the configuration). 10 VDD Core Voltage Supply: Supplies the main voltage to the internal circuitry (typically 3.3V). 11 USB_DP USB Differential Positive Data: USB data transmission line (positive signal). 12 USB_DM USB Differential Negative Data: USB data transmission line (negative signal). 13 SUSPEND# Suspend (Active Low): Pin used for low-power state signaling in USB communication. 14 RESET# Reset (Active Low): This pin is used to reset the chip to its default state. 15 INT# Interrupt (Active Low): A signal that notifies the processor of an event that needs attention. 16 VREG_EN Voltage Regulator Enable: Used to enable the internal voltage regulator if necessary. 17 GND Ground: Another ground connection. 18 GND Ground: Another ground connection. 19 GND Ground: Another ground connection. 20 GND Ground: Another ground connection. 21 GND Ground: Another ground connection. 22 GND Ground: Another ground connection. 23 GND Ground: Another ground connection. 24 GND Ground: Another ground connection.CP2102N-A02-GQFN24R Package Details:
Package Type: 24-Pin QFN (Quad Flat No-lead) package Pin Count: 24 Pin Spacing: 0.5mm Package Size: Typically 4x4mm (for QFN24 packages) Mounting Type: Surface MountFAQs about CP2102N-A02-GQFN24R
Q1: What is the purpose of the CP2102N-A02-GQFN24R chip? A1: The CP2102N-A02-GQFN24R is a USB-to-UART bridge that enables USB communication to UART-based systems.
Q2: How many pins does the CP2102N-A02-GQFN24R have? A2: The CP2102N-A02-GQFN24R has 24 pins in a QFN (Quad Flat No-lead) package.
Q3: What is the main function of the TXD pin? A3: The TXD pin is used for transmitting data from the device to the connected UART system.
Q4: What voltage should be supplied to the VBUS pin? A4: The VBUS pin should receive the USB bus voltage, which is typically 5V.
Q5: What is the purpose of the RTS# pin? A5: The RTS# pin is used to indicate that the device is ready to send data in a UART communication setup.
Q6: Can the CP2102N-A02-GQFN24R be used for power supply to external devices? A6: No, it is not typically used for powering external devices, as the VBUS pin only supplies power to the chip itself.
Q7: What type of signal does the USBDM pin carry? A7: The USBDM pin carries the negative differential data signal for USB communication.
Q8: What is the RESET# pin used for? A8: The RESET# pin is used to reset the chip to its default state when activated (active low).
Q9: What should be connected to the GND pins? A9: All GND pins should be connected to the system ground to establish a common reference.
Q10: Can the CP2102N-A02-GQFN24R be used in low-power applications? A10: Yes, the chip supports low-power states such as suspend mode through the SUSPEND# pin.
Q11: How is the CP2102N-A02-GQFN24R typically interface d with a microcontroller? A11: It interfaces through the UART pins (RXD, TXD, RTS#, CTS#, etc.) for serial communication.
Q12: What is the purpose of the INT# pin? A12: The INT# pin is used for interrupt signaling to notify the processor of an event that requires attention.
Q13: Is the CP2102N-A02-GQFN24R compatible with USB 3.0? A13: No, the CP2102N-A02-GQFN24R is designed for USB 2.0 communication.
Q14: Does the CP2102N-A02-GQFN24R require external components? A14: Typically, it requires external decoupling capacitor s and USB pull-up resistors for proper operation.
Q15: Can the CP2102N-A02-GQFN24R be used in high-speed UART applications? A15: Yes, it can support high-speed UART communication depending on the configuration.
Q16: What is the maximum baud rate supported by the CP2102N-A02-GQFN24R? A16: The maximum baud rate typically supported is up to 1 Mbps, though this depends on the system's configuration.
Q17: Is there a need to manually configure the CP2102N-A02-GQFN24R before use? A17: The chip can be used immediately after proper connection to USB and UART interfaces, but software drivers may need to be installed for operation.
Q18: What operating systems are compatible with the CP2102N-A02-GQFN24R? A18: The CP2102N-A02-GQFN24R is compatible with operating systems like Windows, Linux, and macOS.
Q19: What is the maximum current consumption of the CP2102N-A02-GQFN24R? A19: The current consumption depends on usage but is typically around 100mA during normal operation.
Q20: Can the CP2102N-A02-GQFN24R be used for custom applications? A20: Yes, it is highly configurable and can be used for various embedded systems requiring UART-to-USB communication.
This detailed breakdown should help you fully understand the functionality and usage of the CP2102N-A02-GQFN24R chip. If you need additional details, feel free to ask!
