Chameleon-AVR Nurve Networks, Chameleon-AVR Datasheet - Page 19

• Manufacturer Part Number: Chameleon-AVR
• Description: MCU, MPU & DSP Development Tools AVR8 & PROPELLER DEV SYSTEM (SBC)
• Manufacturer: Nurve Networks

Specifications of Chameleon-AVR

• Processor To Be Evaluated: AVR 328P
• Data Bus Width: 8 bit
• Interface Type: USB, VGA, PS/2, I2C, ISP, SPI
• Operating Supply Voltage: 3.3 V, 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

© 2009 NURVE NETWORKS LLC “Exploring the Chameleon AVR 8-Bit”
Figure 1.5 – The Atmel Mega AVR 328P architecture block diagram.
1.3 The Atmel Mega AVR328P Chip
The Atmel AVR 328P (P stands for Pico Power) comes in a number of packages including 28-pin DIP (duel inline
package). We are using the Mega AVR 328P DIP package in the Chameleon. Figure 1.4 shows the packaging and pin out
of the chip. The AVR 328P was designed as a general purpose, high performance microcontroller with an 8-bit data path,
single clock execution on many instructions, as well as support for 16-bit operations and built in multiply instructions. The
chip has a large FLASH memory of 32K Bytes, but a smaller 2K Byte SRAM which makes a lot of RAM intensive
applications challenging; however, the Chameleon is designed for control applications and 2K of RAM should be more
than enough for anything you need. Moreover, the 328P has 2x the amount of FLASH as the 168 which successfully was
used in thousands if not tens of thousands of Ardunios and everyone did just fine. For complete details on the processor,
please review the datasheet located on the DVD-ROM here:
DVD-ROM: \ cham_avr \ docs \ datasheets \ ATMega48_88_168_328_doc8161.pdf
Table 1.2 below shows the various differences between the 48, 88, 168, and 328 variants for reference. Additionally, there
is a useful EEPROM memory as well that can be used as a little disk drive or memory storage for whatever purposes. Of
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