The recommended layout and routing for the DS1391U-33 involves keeping the input and output traces as short as possible, using a solid ground plane, and avoiding vias under the device. Additionally, the input and output capacitors should be placed as close to the device as possible, and the power supply decoupling capacitors should be placed near the power pins.
To ensure the DS1391U-33 is properly powered and decoupled, use a low-ESR capacitor (e.g., 10uF) between the VCC and GND pins, and a smaller capacitor (e.g., 100nF) between the VCC and GND pins for high-frequency decoupling. Additionally, use a 1uF capacitor between the VCC and AVCC pins for analog power supply decoupling.
The DS1391U-33 can handle clock frequencies up to 33MHz, but the maximum frequency may be limited by the specific application and layout. It's recommended to consult the datasheet and application notes for specific guidance on clock frequency limitations.
The DS1391U-33's internal registers can be programmed using the I2C interface. The device has a 7-bit slave address, and the registers can be accessed using the I2C write and read commands. Consult the datasheet for the specific register addresses and programming sequences.
The typical power consumption of the DS1391U-33 is around 1.5mA at 3.3V supply voltage, but this can vary depending on the specific application, clock frequency, and operating conditions. Consult the datasheet for more detailed power consumption information.
DS1391U-33 datasheet
by Maxim Integrated Products
