Experience a seamless expansion of I/O pins with TPIC6A595 and STM32L496AG

Expand 4 Click is based on the TPIC6A595, a monolithic, high-voltage, high-current power logic 8-bit shift register from Texas Instruments. The TPIC6A595 contains a built-in voltage clamp on the outputs for inductive transient protection. Each output is a low-side, open-drain DMOS transistor with output ratings of 50V and a 350mA continuous sink current capability, featuring an independent chopping current-limiting circuit to prevent damage in the case of a short circuit. This Click board™ is designed for use in systems that require relatively high load power, such as relays, solenoids, and other medium-current or high-voltage loads. This TPIC6A595 contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit, D-type storage register. Data transfers through the shift and storage register on the rising edge

of the shift register clock (SPI clock pin on the mikroBUS™ socket) and the register clock (CS clock pin on the mikroBUS™ socket), respectively. The storage register transfers data to the output buffer when the shift register clear pin is set to a high logic state. This function can be done via the existing CLR jumper by placing it in the appropriate VCC or CLR position. In this way, it is possible to permanently bind this function so that the storage register always transfers data to the output buffer by setting the jumper to the VCC position or controlled digitally by setting the jumper to the CLR position. This way, controlling the shift-register-clear via the RST pin of the mikroBUS™ socket marked as CLR is possible. The input shift register is cleared when CLR is in a low logic state. In the same way, it is possible to

manage the outputs of the port expander, eight pins above the mikroBUS™ socket (D0-D7), using EN jumper, more precisely define the output management mode, constantly ON or digital control over them through PWM pin of the mikroBUS™ socket marked as EN. When the EN pin is held in a high logic state, all data in the output buffers is kept low, and all drain outputs are OFF. When EN is LOW, data from the storage register is transparent to the output buffers. This Click board™ can be operated only with a 5V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. Also, it comes equipped with a library containing functions and an example code that can be used as a reference for further development.

The 32L496GDISCOVERY Discovery kit serves as a comprehensive demonstration and development platform for the STM32L496AG microcontroller, featuring an Arm® Cortex®-M4 core. Designed for applications that demand a balance of high performance, advanced graphics, and ultra-low power consumption, this kit enables seamless prototyping for a wide range of embedded solutions. With its innovative energy-efficient

architecture, the STM32L496AG integrates extended RAM and the Chrom-ART Accelerator, enhancing graphics performance while maintaining low power consumption. This makes the kit particularly well-suited for applications involving audio processing, graphical user interfaces, and real-time data acquisition, where energy efficiency is a key requirement. For ease of development, the board includes an onboard ST-LINK/V2-1

debugger/programmer, providing a seamless out-of-the-box experience for loading, debugging, and testing applications without requiring additional hardware. The combination of low power features, enhanced memory capabilities, and built-in debugging tools makes the 32L496GDISCOVERY kit an ideal choice for prototyping advanced embedded systems with state-of-the-art energy efficiency.