NXP 5-V 80C51 Flash microcontrollers P89CV51Rx2 with ISP and IAP Key features 4 High-performance 8051 CPU with 12- or 6-clock operation 4 Up to 40-MHz operation in 12-clock and up to 20-MHz in 6
80C51 with up to 64 KB of Flash, a SPI, and fast erase times; NXP<sup>®</sup> 5-V 80C51 Flash microcontrollers P89CV51Rx2 with ISP and IAP
NXP 5-V 80C51 Flash microcontrollers P89CV51Rx2 with ISP and IAP Key features 4 High-performance 8051 CPU with 12- or 6-clock operation 4 Up to 40-MHz operation in 12-clock and up to 20-MHz in 6