The recommended crystal oscillator frequency for the CY8C5247LTI-089 is 32.768 kHz. This frequency is used as the clock source for the device's real-time clock (RTC) and watchdog timer (WDT).
To configure the CY8C5247LTI-089 for low-power operation, you can use the device's power management features, such as the sleep mode, hibernate mode, and dynamic voltage and frequency scaling (DVFS). You can also use the device's low-power peripherals, such as the low-power UART and low-power I2C. Additionally, you can optimize your firmware to minimize power consumption by reducing the clock frequency, disabling unused peripherals, and using power-saving modes.
The maximum operating temperature range for the CY8C5247LTI-089 is -40°C to +85°C. However, the device can be operated at temperatures up to +105°C for short periods of time, but this may affect its reliability and lifespan.
The CY8C5247LTI-089 has a built-in capacitive touch sensing peripheral that can be used to implement touch sensing applications. To implement capacitive touch sensing, you need to connect the touch sensors to the device's analog inputs, configure the touch sensing peripheral, and write firmware to process the touch data. Cypress provides a touch sensing library and example code to help you get started.
Yes, the CY8C5247LTI-089 can be used with an external memory. The device has an external memory interface (EMIF) that allows you to connect external memory devices, such as flash memory or SRAM. You can use the EMIF to expand the device's memory capacity or to store data that needs to be retained when the device is powered off.
CY8C5247LTI-089 datasheet
by Cypress Semiconductor
