AT89C2051-24SU

The AT89C2051-24SU is a low-voltage, high-performance CMOS 8-bit microcomputer with 2K bytes of Flash programmable and erasable read-only memory (PEROM). The device is manufactured using Atmel's high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set.
 
Features of the AT89C2051-24SU are:(1)compatible with MCS-51 products;(2)2K bytes of in-system programmable (ISP) flash memory;(3)2.7V to 6V operating range;(4)fully static operation: 0 Hz to 24 MHz;(5)two-level program memory lock;(6)128 x 8-bit internal RAM;(7)15 programmable I/O lines;(8)two 16-bit timer/counters;(9)six interrupt sources;(10)programmable serial UART channel;(11)direct LED drive outputs;(12)on-chip analog comparator;(13)low-power idle and power-down modes;(15)green (Pb/halide-free) packaging option.

The absolute maximum ratings of the AT89C2051-24SU can be summarized as:(1):the parameter is operating temperature,the rating is -55 to +125,the unit is ;(2):the parameter is storage temperature,the rating is -65 to +150,the unit is ;(3):the parameter is voltage on any pin with respect to ground,the rating is -1.0 to +7.0,the unit is V;(4):the parameter is maximum operating voltage,the rating is 6.6,the unit is V;(5):the parameter is DC output current,the rating is 25.0,the unit is mA.