P87C51FB-4A,512 Datasheet PDF - NXP

●The P87C51FB-4A,512 is a single-chip 8-bit Microcontroller manufactured in advanced CMOS process and is derivative of the 80C51 microcontroller family. The device have the instruction set as the 80C51. The device have four 8-bit I/O ports, three 16-bit timer/event counters, a multi-source, four-priority-level, nested interrupt structure, an enhanced UART and on-chip oscillator and timing circuits. For systems that require extra memory capability up to 64k bytes, each can be expanded using standard TTL-compatible memories and logic. Its added features make it an even more powerful microcontroller for applications that require pulse width modulation, high-speed I/O and up/down counting capabilities such as motor control. It also has a more versatile serial channel that facilitates multiprocessor communications.

● 80C51 Central processing unit

● Speed up to 33MHz

● Full static operation

● Operating voltage range - 2.7 to 5.5V @ 16MHz

● Security bits - ROM 2 bits, OTP-EPROM 3 bits

● Encryption array - 64bytes

● RAM expandable to 64kB

● 4 Level priority interrupt

● 6 or 7 Interrupt sources

● Four 8-bit I/O ports

● Full-duplex enhanced UART

● Clock can be stopped and resumed

● Idle mode

● Power down mode

● Programmable clock out

● Second DPTR register

● Asynchronous port reset

● Low EMI (inhibit ALE)