Lattice Semiconductor provides a PCB layout and routing guidelines document that recommends a 4-layer PCB stack-up, with the top and bottom layers used for signal routing, and the inner layers used for power and ground planes. It also recommends using a 0.5mm pitch BGA escape routing pattern.
A reliable POR circuit can be implemented using a voltage supervisor IC, such as the TLV7031, which can detect the power supply voltage and generate a reset signal to the FPGA when the voltage is below a certain threshold.
The ICE40LP384-SG32 has a thermal design power (TDP) of 0.5W, and a junction-to-ambient thermal resistance of 25°C/W. To manage thermal performance, it is recommended to use a heat sink or a thermal interface material, and to ensure good airflow around the device.
The ICE40LP384-SG32 has a built-in PLL that can be configured using the Lattice Diamond software. The PLL can be used to generate clock frequencies up to 300MHz, and can be configured to use an external clock source or an internal oscillator.
The ICE40LP384-SG32 has 384 I/O pins, which can be grouped into 12 banks. Each bank can be configured to use a specific voltage, such as 1.2V, 1.5V, or 3.3V, and can be used for input, output, or bidirectional signals.
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ICE40LP384-SG32 Overview
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