MC68882EI33A

The MC68882EI33A is a high-performance floating-point coprocessor from NXP Semiconductors, designed to extend the integer processing capabilities of M68000 family processors. It fully implements the IEEE Standard for Binary Floating-Point Arithmetic (ANSI-IEEE Standard 754-1985).

Key features include eight general-purpose floating-point data registers supporting a full 80-bit extended precision real data format. It boasts a 67-bit arithmetic unit for fast calculations and a 67-bit barrel shifter for high-speed shift operations. The device also includes special purpose hardware for fast conversion of binary real memory operands to and from the internal extended format.

This coprocessor supports forty-six instructions, including a full set of trigonometric and transcendental functions. It is compatible with the MC68020 or MC68030 processors and offers an optimized interface for increased throughput. The MC68882EI33A is available in a 68-PLCC package and is suitable for surface mount applications.

It supports seven data types: word and long word integers; single, double, and extended precision real numbers; and packed binary coded decimal string real numbers. Twenty-two constants are available in the on-chip ROM, including pi, e, and powers of 10.