Texas Instruments CC2533 manual IR transmitter polarity

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The IR receiver is a Vishay TSOP85238. The receiver is optimized for 38 KHz input signal. The IR input is connected to the IR_IN signal

The IR transmitter is a Vishay TSKS5400S. The diode is only used for short distance IR signals as the target module is intended to be mounted on the receiver side of the equipment. The IR diode is controlled by the IR_OUT1 signals. The IR_OUT1 signal is accessible on pin 12 of the interface header connector to allow driving external signals with the IR output.

6.1.7.1IR transmitter polarity

The target module shipped with CC2533EM has changed the polarity for the I/O pin driving the IR signal from active low to active high signal. This change can be implemented on older target modules shipped with the CC2530EM.

In order to change the polarity of this signal, make the following changes:

Remove Q1

Change R18 (1kohm) with a zero ohm resistor

Short circuit two pads(marked in red) on Q1 footprint

Short R18

Remove

Q1

Short Q1 pads

Figure 13: Changing polarity of IR control signal to active high

6.1.8Buttons and LEDs

The target module includes a push button can be used to associate the target board and the remote control. In addition there is a reset button to reset the board.

The LEDs are controlled by the signals LED0 and LED1. The red LED is marked “STATUS” and the green LED is marked “LINK”.

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Contents CC2533 RF4CE Basic Development Kit Hardware User’s Guide Table of Contents List of Figures List of TablesIntroduction About this manualAcronyms and Abbreviations Development Kit Content Getting StartedCC2533 Remote Control Remote Control Key layout Target ModuleInstalling RemoTI software and Windows drivers RemoTI SoftwareInstalling the target module Windows drivers Assembled target moduleConnecting the target module for the first time Windows XP Driver installation is completed Windows XP Testing the Remote Control application Using the SmartRF Flash Programmer PC software Programming and debugging the remote controlRemote control Programming and DebuggingConnecting the remote control to the CC Debugger Programming and debugging the target moduleConnecting the target module to the CC Debugger EM header RemoTI target Module signal Target ModuleTarget module hardware description 1 CC2533EM interface2 USB Interface connectorsSignal name Pin # Interface header pinout Debug interface Debug Header pinout DataflashIR transmitter polarity Appendix a Opening the remote control Opening the remote control, step oneAppendix B How to upgrade the target module USB driver Short pin 1GND and pin11 SDAUsing the Eeprom burner software Schematic and Layout Document History Revision Date Description/ChangesImportant Notice

CC2533 specifications

The Texas Instruments CC2533 is a versatile System-on-Chip (SoC) designed primarily for wireless applications, particularly in the field of low-power Zigbee networking. This device is part of the CC253x family and caters to the needs of developers focusing on IoT (Internet of Things) solutions, smart home applications, and industrial automation.

One of the CC2533's standout features is its integration of a high-performance 8051 microcontroller core, which runs at speeds of up to 32 MHz. This core provides sufficient processing power for running Zigbee stack software and application code, enabling developers to build sophisticated networking solutions while maintaining low power consumption. The device incorporates up to 256 KB of flash memory and 8 KB of RAM, allowing ample space for firmware and data storage.

Key to its functionality is the CC2533's built-in enhanced 2.4 GHz transceiver, which supports Zigbee, IEEE 802.15.4, and other IEEE wireless protocols. This transceiver enables robust communication capabilities, ensuring reliable connectivity even in challenging environments. The device can operate over a wide temperature range, making it suitable for various applications, from indoor to outdoor environments.

The CC2533 features several power management modes, including Sleep and Deep Sleep modes, which help extend battery life in portable applications. Its low active and sleep current consumption is a critical advantage, enabling devices to operate for an extended time on small batteries. Additionally, the chip supports AES-128 hardware encryption, enhancing security for transmitted data, a critical requirement in today's connected devices.

The CC2533 is equipped with various peripherals, including GPIOs, timers, and a serial interface, facilitating interaction with other components. The device is compatible with the TI Zigbee software stack, which simplifies the development process by providing APIs for application development, thus enabling faster time to market.

Overall, the Texas Instruments CC2533 stands out as a feature-rich SoC, ideal for creating reliable, low-power Zigbee-based solutions. Its combination of a powerful microcontroller, integrated transceiver, advanced power management, and robust security features make it an attractive choice for developers looking to leverage IoT technologies in their projects. This makes the CC2533 a cornerstone of modern wireless communication and an essential component in the development of smart, connected devices.
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