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Additional Pictures 

 

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

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

 

The internal construction of the TI-Nspire CAS 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 CAS 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 CAS 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 CAS 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.


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If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, March 14, 2010. No reprints without written permission.