The recommended power-up sequence is to power up the core voltage (VDD) first, followed by the I/O voltage (VDDA). This ensures that the internal voltage regulators are properly enabled before the I/O pins are powered up.
The OMAPL138AZWT3 has multiple clock sources, including an internal oscillator, external crystal oscillator, and PLL. The clock sources can be configured using the clock control registers. Refer to the device's technical reference manual for detailed information on clock configuration.
The maximum operating frequency of OMAPL138AZWT3 is 456 MHz. However, the actual operating frequency may be limited by the specific application, power consumption, and thermal considerations.
The EMIF (External Memory Interface) interface on OMAPL138AZWT3 is used to connect to external memory devices such as SDRAM, DDR, and flash. The EMIF interface can be configured using the EMIF control registers. Refer to the device's technical reference manual for detailed information on EMIF configuration and usage.
The reset pin on OMAPL138AZWT3 is used to reset the device to its default state. When the reset pin is asserted, the device resets its internal state, including the processor, peripherals, and memory. The reset pin can be used to recover from system errors or to initialize the device during power-up.
OMAPL138AZWT3 datasheet
by Texas Instruments
