This board can be used to convert the TTL level (digital logic) UART signals of most microcontroller boards to RS232 level and vice versa.
It can be used to create an interface to the RS232 (Serial) port of a PC for devices such as microcontroller boards, GPS, Bluetooth, Zigbee and other modules that only support TTL-level UART signals.
RS232-TTL Converter Board Features
- Converts TTL UART to/from RS232
- Ideal for breadboarding
- Can be used with GPS, Bluetooth, Zigbee, microcontroller systems, PCs
- Small form factor
- Accepts an XBee or XBee Pro Zigbee module
- Jumper-selectable configuration for use with PC or other systems
- Four LED indicators of transmission
- 3.3V or 5V levels configurable
- DB9 connector for data communication
- 12-pin single-row header for UART-0 connections
- 2.1mm power jack
- Dimensions: 2.85 × 1.45 inches (7.24 × 3.68 cm)
Operating Modes Using jumpers, the BRD-RS232-TTL-1 can be configured for the following modes:
PC Mode — In this mode, the DB9 is connected to a computer's serial port. The PC's Receive (RXD) and Transmit (TXD) signals appear on the pin header as TTL/CMOS-level signals. As an option, this mode can be used to connect a Zigbee module to the PC. The board must be powered to operate in PC Mode.
GadgetPC Mode — In this mode, TTL/CMOS level signals from a GadgetPC's console port appear as RS232-level signals on the DB9 connector. This mode is useful for monitoring GadgetPC's console using a terminal program on a PC. This mode typically does not support the Zigbee module option.
MINI-MAX Mode — In this mode, RS232-level Receive and Transmit signals from the serial port of various MINI-MAX boards appear as TTL/CMOS level signals on the pin header. This mode is useful for connecting MINI-MAX boards to various serial devices that accept TTL/CMOS-level RS232. Optionally, this mode can be used for connecting a Zigbee module to a MINI-MAX board.
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