AT89C4051-24PU 8-bit microcontroller family MCS-51 ATMEL production.
specifications:
- Architecture: 8051
- Working voltage: 2.7 - 6.0 VDC
- Size of program memory: 4k Byte
- Volatile data memory size: 128 x 8-bit
- Peripherals: Analog comparator, direct LED drive outputs
- Number of I / O: 15
- Number of external interrupts: 2
- Timer / Counter: 2 timers / counters 16-bit
- Working frequency: 0-24 MHz
- Programming Interface: Parallel
- Interface peripherals: UART
- Special features: Brown-out detection
- Packaging: 20-pin DIP
