TS87C51U2 Key Features
- 8051 pin and instruction patible
- Four 8-bit I/O ports
- Three 16-bit timer/counters
- 7 Interrupt sources
- 4 level priority interrupt system
- 256 bytes scratchpad RAM
- Framing error detection
- Automatic address recognition
- 40 MHz @ 5V, 30MHz @ 3V
- Idle mode