TS80C51RD2-MIB [Microchip]

The TS80C51Rx2 retains all features of the 80C51 with extended ROM/EPROM capacity (16/32/64K bytes), 256 bytes of internal RAM, a 7-source, 4-level interrupt system, an on-chip oscillator and three timer/counters. It features a Programmable Counter Array, an XRAM of 256 or 768 bytes, a Hardware Watchdog Timer, a more versatile serial channel (EUART) and a X2 speed improvement mechanism. The device is 8051 pin and instruction compatible with four 8-bit I/O ports (plus two extra on RD2 with high pin count packages), three 16-bit timer/counters, and 256 bytes scratchpad RAM. It includes high-speed architecture (40 MHz @5V, 30MHz @3V) with X2 mode capability (60 MHz @5V, 40 MHz @3V equivalent), dual data pointer, programmable clock out and up/down timer/counter 2, and once mode for on-chip emulation. Power control modes include idle mode and power-down mode, with commercial (0 to 70°C) and industrial (-40 to 85°C) temperature ranges available.