M87C51FB - Intel

M87C51FB CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

VCC Supply voltage VSS Circuit ground Port 0 Port 0 is an 8-bit open drain bidirectional I O port As an output port each pin can sink several LS 3 M87C51FB Port 2 emits the high-order address byte during fetches from external Program Memory and during accesses to external Data Memory that use 16-bit addresses (MOVX DPTR) In this application it uses strong.

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 multi-processor communications November 1994 Order Number 271093-007 M87C51FB 271093
  – 1 Figure 1 M87C51FB Block Diagram 2 M87C51FB TTL inputs Port 0 pins that have 1’s written to them float and in that state can be used as high-impedance inputs Port 0 is also the multiplexed low-order address and data bus during accesses to external Program and Data Memory In.