在size下拉列表中，选择最小值(256)——小uart实际上只有4个32位寄存器，因此只需要16字节的地址空间，所以256个字节绰绰有余。

In the Size drop-down list, select the smallest value (256) — the lite UART actually has only four 32-bit registers, and hence only requires 16 bytes of address space, so 256 bytes is plenty.

youdao

在size下拉列表中，选择最小值(256)——小uart实际上只有4个32位寄存器，因此只需要16字节的地址空间，所以256个字节绰绰有余。

In the Size drop-down list, select the smallest value (256) — the lite UART actually has only four 32-bit registers, and hence only requires 16 bytes of address space, so 256 bytes is plenty.

youdao