P89V660/662/664 8-bit 80C51 5 V low power 16 kB/3.
NXP
P89C660 - 8-bit 80C51 5V low power 16 kB/32 kB/64 kB flash microcontroller
P89V660/662/664 8-bit 80C51 5 V low power 16 kB/32 kB/64 kB flash microcontroller with 512 B/1 kB/2 kB RAM, dual I2C-bus, SPI Rev. 3.1 — 17 October .
