Additional Pictures 


Changing the 4 AAA-sized batteries of the TI-Nspire EZ-Spot
with Touchpad needs the keyboard to be removed. 

The backside of the TI-Nspire EZ-Spot with Touchpad features
 a cover to access the optional, rechargeable battery.


The internal construction of the TI-Nspire makes use of just 3 printed circuit boards (PCB's),
one for the gray-scale LC-Display and power supply, one for the computing unit and the keyboard. 

The frontside of the PCB's reveal the construction of the 240 * 320 pixel gray-scale
LC-Display, and the ARM9 based 32-bit RISC processor.  

The brain of the TI-Nspire is actually a System-on-Chip based on the ZEVIO architecture from LSI Logic.
We assume that the 208 pin housing hosts a 90 MHz ARM9 32-bit RISC processor. 

The TI-Nspire uses two different memory chips, a 32M Bytes NAND Flash-ROM,
and 16M*16 SDRAM. The clock frequency of the SoC is 27 MHz.

The TI-Nspire makes use of three highly integrated display drivers. One Novatek NT7702 
for the 240 rows (top) and two unidentified chips (bottom) for 160 columns, each.

horizontal rule

If you have additions to the above article please email:

Joerg Woerner, January 9, 2011. No reprints without written permission.