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ATmega128 microcontroller
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High-performance RISC architecture, 121 instructions (most single clock cycle execution), 16 MIPS at
16MHz
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128 KBytes of Flash memory
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4K Bytes of SRAM memory
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4K Bytes of EEPROM
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SPI Master/Slave interface
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Four internal timers/counters 8/16bit
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Two UART interfaces (up to 1Mbaud)
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Serial interface compatible with I2C
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In System Programming
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In Circuit Debugging through JTAG interface
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Real Time Clock with 32 kHz oscillator
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8 channel 10-bti A/D converter
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6 I/O ports
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6 PWM outputs
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Extended temperature range, internal and external interrupt sources
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Internal watchdog timer
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More informations at Atmel's site
Ethernet controller LAN91C111
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One-chip Ethernet controller with
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IEEE 802.3 10/100Mb/s
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Internal 8kB SRAM memory for buffers
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Built-in data prefetch function to improve performance
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Full duplex/half duplex
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Support diagnostic LEDs
The module is adapted to operate with the network controller with the use of interrupts. The interrupt signal is
applied to input INT5 (PE5) of the microcontroller.
The state of the Ethernet controller is signaled by two LED diodes: LNK – connection with the network, and
ACT – active (transmission/reception).
The location of the controller in the address space is dependent upon the chosen operating mode of the
memory controller.
