Raspberry Pi Unveils New HAT+ Standard and PCIe FFC Connector Specifications

Raspberry Pi has released two new specifications: the PCIe FFC connector specifications and the new HAT+ standard. The PCIe FFC connector specifications include a 16-pin 0.5mm pitch FFC connector with a single lane PCIe interface, and recommendations for the FFC cable length and impedance. The HAT+ standard replaces the original HAT specification and introduces several changes, such as electrical compatibility with the STANDBY power state, less prescriptive HAT dimensions, and a special class of HAT+s that can be stacked with an extra HAT+ on top.

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