28F400BX-B Overview
4-MBIT (256K X 16 512K X 8) BOOT BLOCK FLASH MEMORY FAMILY 28F400BX-T B 28F004BX-T B Y x8 x16 Input Output Architecture 28F400BX-T 28F400BX-B For High Performance and High Integration 16-bit and 32-bit CPUs Y x8-only Input Output Architecture 28F004BX-T.