SC87C451ACA68

The SC87C451ACA68 is one member of the 8XC451 (includes the 80C451, 87C451 and 83C451) family which designed as one kind of I/O expanded single-chip microcontroller.It is a functional extension of the 87C51 microcontroller with three additional I/O ports and four I/O control lines for a total of 68 pins and includes a 4k × 8 ROM (83C451) EPROM (87C451), a 128 × 8 RAM, 56 I/O, two 16-bit timer/counters, a five source, two priority level, nested interrupt structure, a serial I/O port for either a full duplex UART, I/O expansion, or multi-processor communications, and on-chip oscillator and clock circuits.

Features of the SC87C451ACA68 are:(1)80C51 based architecture;(2)seven 8-bit I/O ports;(3)port 6 features:eight data pins,four control pins,direct MPU bus interface and parallel printer interface;(4)external memory addressing capability:64k ROM and 64k RAM;(5)low power consumption:--normal operation: less than 24mA at 5V, 12MHz,--idle mode,--power-down mode.

The absolute maximum ratings of the SC87C451ACA68 can be summarized as:(1)operating temperature under bias:0 to +70 °C;(2)storage temperature range:-65 to +150 °C;(3)voltage on any other pin to Vss:-0.5 to +6.5 V;(4)power dissipation (based on package heat transfer limitations, not device power consumption):1.5 W.If you want to know more information such as the electrical characteristics about the SC87C451ACA68,please download the datasheet in www.seekic.com or www.chinaicmart.com .