Atmel AT89S8253-24AU tqfp-44 microcontroller

Atmel AT89S8253-24AU,  8-bit MCS-51 family.

specifications: 
- Architecture: MCS-51
- Working voltage: 2.7 V ~ 5.5 V
- Size of program memory: 12K Byte Flash
- Volatile data memory size: 256 Bytes of RAM
- The size of non-volatile data memory: 2K Bytes EEPROM
- Number of I / O: 32
- Number of external interrupts: 9 interrupt sources
- Timer / Counter: 3 channel timer / counter 16-bit
- Working frequency: 0Hz â € "24MHz
- Interface programming: ISP
- Interface peripherals: SPI, UART
- Packaging: TQFP-44