说明：  VRS51L3074是一款嵌入非易失性 FRAM存储器的8051MCU。该器件8KB真正的非易失性随机存储器映像到VRS51L3074的XRAM存储寻址空间上充分发挥其快速读写以及读写寿命无限的特点。单周期8051处理器 内核可以提供高达 4O MIPS的吞吐量，并且与标准8051s指令兼容。
(VRS51L3074 is an embedded non-volatile FRAM memory 8051MCU. The device truly non-volatile 8KB RAM VRS51L3074 image to the XRAM memory addressing space and give full play to its fast read and write and to read and write the characteristics of unlimited life. Single-cycle 8051-core processors can provide up to 4O MIPS throughput, and instruction-compatible with standard 8051s.)