AT89S8253-24JU

The AT89S8253-24JU is a 8-bit low-power high-performance CMOS Microcontroller with 12kB of in-system programmable (ISP) flash program memory and 2kB of EEPROM data memory. The device is manufactured using high-density non-volatile memory technology and is compatible with the industry-standard MCS-51 instruction set and pinout. The on-chip downloadable flash allows the program memory to be reprogrammed in-system through an SPI serial interface or by a conventional non-volatile memory programmer. By combining a versatile 8-bit CPU with downloadable flash on a monolithic chip, the AT89S8253 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications.

• Three-level program memory lock
• 32 programmable I/O lines
• Three 16-bit timer/counters
• Nine interrupt sources
• Enhanced UART serial port with framing error detection and automatic address recognition
• Enhanced SPI (double write/read buffered) serial interface
• Low-power idle and power-down modes
• Interrupt recovery from power-down mode
• Programmable watchdog timer
• Dual data pointer
• Power-off flag
• Four-level enhanced interrupt controller
• Internal power-on reset
• Compatible with MCS®51 products
• 0 to 24MHz (in x1 and x2 modes) Fully static operation