INTEGRATED CIRCUITS P89C51X2/52X2/54X2/58X2 80C51.
NXP
P89C58X2 - 80C51 8-bit Flash microcontrolle
INTEGRATED CIRCUITS P89C51X2/52X2/54X2/58X2 80C51 8-bit Flash microcontroller family 4K/8K/16K/32K Flash 128B/256B RAM Preliminary data Supersedes d.