The GP232RNL is a highly integrated USB to UART bridge controller that provides a simple solution to convert an RS232 interface to a USB interface using minimal components and PCB space. The GP232RNL includes a USB 2.0 full-speed functional controller, USB transceiver, oscillator, EEPROM and asynchronous serial data bus (UART) with complete modem control signals, integrated in the SSOP28 package and requiring no other external USB components.
The integrated EEPROM on the chip can be used to customize the USB vendor ID, product ID, product description string, power descriptor, device release number and device serial number required for OEM applications. The EEPROM is programmed on the application board via the USB port, which allows the GP232RNL to be programmed during manufacturing and debugging of the product.
01
Main features
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Integrated USB transceiver, compliant with USB 2.0 specification, no external resistor required;
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Integrated clock, no external crystal required;
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Integrated 1024-bit EEPROM for storing vendor ID, product ID, serial number, power descriptor, version number, product description string and CBUSI/O configuration;
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Configurable CBUS I/O pins;
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Built-in level conversion circuits on UART and CBUS enable connection of 1.8~5V external signals
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True 5V/3.3V/2.5V/1.8V CMOS driver output and input;
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Configurable I/O pin output drive strength
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Send and receive LED drive signals
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Asynchronous serial data bus (UART)
—Supports full modem interface signaling
—Supported data formats:
——Data bits: 5, 6, 7 and 8
——Stop bits: 1, 1.5 and 2
——Check digit: odd, even, mark, space, no check
—Baud rate: 300bps~3Mbps
—256 bytes receive buffer and 256 bytes transmit buffer
—Supports hardware or X-On/X-Off flow control
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On-chip power-on reset circuit.
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On-chip voltage regulator 3.3V output
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voltage
—Self-powered: 3.0~3.6V
—USB bus power supply: 4.2~5.25V
02
Related icons
SSOP28 pin arrangement diagram
03
Application areas
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USB to RS232/RS422/RS485 converter
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Upgrade legacy peripherals to USB
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Cellular and Cordless Phone USB Data Transfer Cables and Interfaces
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Interface design based on MCU/PLD/FPGA
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USB audio and low-bandwidth video data transfer
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PDA to USB data transfer
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USB smart card reader
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USB meter
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USB industrial control
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USB MP3 player interface
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USB flash card reader/writer
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Set-top box PC-USB interface
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USB digital camera interface
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USB hardware modem
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USB wireless modem
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USB barcode reader
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USB software and hardware encryption
04
Driver support
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Windows 11 64-bit
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Windows 10 32,64-bit
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Windows 8/8.1 32,64-bit
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Windows 7 32,64-bit
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Windows Vista and Vista 64-bit
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Windows XP and XP 64-bit
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Windows 98, 98SE, ME, 2000, Server 2003, XP
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Server 2008 and server 2012 R2
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Windows XP Embedded
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Windows CE 4.2, 5.0 and 6.0
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Mac OS 8/9, OS-X
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Linux 2.4 and greater