ATMEGA8515-16MI [Microchip]

The ATmega8515 provides 8K bytes of In-System Programmable Flash with Read-While-Write capabilities, 512 bytes EEPROM, 512 bytes SRAM, an External memory interface, 35 general purpose I/O lines, 32 general purpose working registers, two flexible Timer/Counters with compare modes, Internal and External interrupts, a Serial Programmable USART, a programmable Watchdog Timer with internal Oscillator, a SPI serial port, and three software selectable power saving modes. The device uses Atmel’s high density nonvolatile memory technology and supports In-System Programming through an SPI serial interface.