P89V51RD2FBC

The P89V51RD2FBC is a kind of 80C51 microcontroller with 64 kB Flash and 1024 bytes of data RAM.A key feature of the P89V51RD2BN is its X2 mode option. The design engineer can choose to run the application with the conventional 80C51 clock rate (12 clocks per machine cycle) or select the X2 mode (6 clocks per machine cycle) to achieve twice the throughput at the same clock frequency. Another way to benefit from this feature is to keep the same performance by reducing the clock frequency by half, thus dramatically reducing the EMI.

Features of the P89V51RD2FBC are:(1) 80C51 central processing unit;(2) 5 V operating voltage from 0 to 40 MHz;(3) 64 kB of on-chip Flash program memory with ISP (In-System Programming) and IAP (In-Application Programming);(4) it supports 12-clock (default) or 6-clock mode selection via software or ISP;(5) SPI (Serial Peripheral Interface) and enhanced UART;(6) PCA (programmable counter array) with PWM and capture/compare functions;(7) four 8-bit I/O ports with three high-current Port 1 pins (16 mA each);(8) three 16-bit timers/counters;(9) programmable watchdog timer (WDT);(10) eight interrupt sources with four priority levels.

The absolute maximum ratings of the P89V51RD2FBC can be summarized as:(1): operating bias ambient temperature(Tamb(bias)) is -55°C to +125°C;(2): storage temperature range(Tstg) is -65°C to +150 °C;(3): voltage on EA pin to VSS(VEA) is -0.5 V min and 14 V max;(4): DC voltage on any pin to ground potential(Vn) is -0.5 V to VDD + 0.5 V; (5): transient voltage (<20 ns) on any other pin to VSS (Vit) is -1.0 V min and VDD + 1.0 V max.