80C31 80 Series CMOS Microprocessor with 128x8 RAM and I/O

80C31 Features

• 40-pin MCS51 Series Microcontroller
• Power Control Modes
• 4kByte On-Chip ROM/EPROM
• 128 x 8-bit RAM
• 32 programmable I/O Lines
• Two 16-bit Timers
• Five Interrupt Sources
• 2-Level Program Memory Lock EPROM
• Programmable Serial Port
• 64k External Program Memory Space
• 64k External Data Memory Space