80C51
Description
The Philips 80C51/87C51/80C52/87C52 is a high-performance static 80C51 design fabricated with Philips high-density CMOS technology with operation from 2.7 V to 5.5 V. The 8xC51 and 8xC52 contain a 128 × 8 RAM and 256 × 8 RAM respectively, 32 I/O lines, three 16-bit counter/timers, a six-source, four-priority level nested interrupt structure, a serial I/O port for either multi-processor munications, I/O expansion or full duplex UART, and on-chip oscillator and clock circuits.
Key Features
- Memory addressing capability – 64k ROM and 64k RAM
- Power control modes: – Clock can be stopped and resumed – Idle mode – Power-down mode
- CMOS and TTL compatible
- TWO speed ranges at VCC = 5 V – 0 to 16 MHz – 0 to 33 MHz
- Three package styles
- Extended temperature ranges
- Dual Data Pointers
- Security bits: – ROM (2 bits) – OTP/EPROM (3 bits)
- Encryption array – 64 bytes
- 4 level priority interrupt
