Texas Instruments TI-Nspire CX EZ-Spot

Date of introduction:  February 25, 2011
 Available: September 2011
Display technology:  LCD dot matrix
 16-bit color, backlit
New price:  $154.99 (SRP 2011) Display size:  240 * 320 pixels 
Size:  7.5" x 3.4" x 0.65"
 190 x 87 x 16 mm3
Weight:  8.5 ounces, 242 grams Serial No:  2068024218
Batteries:  3.7L1060SP Li-Ion Date of manufacture:  mth 06 year 2011 (C)
AC-Adapter:  AC9211U Origin of manufacture:  China (P)
Precision:  14 Integrated circuits:  CPU: ET-NS2010B-0 (T6UJ1XBG-0002),
 SDRAM and Flash MCP: Samsung K511F12ACA
Program steps:  64M Bytes, 100M Bytes Flash ROM Courtesy of:  Joerg Woerner

To reduce theft of this new school-owned TI-Nspire CX calculator, Texas Instruments introduced on February 25, 2011 the EZ-Spot Teacher Packs with a bright, easy-to-spot, "school bus yellow" design. The design was later changed, don't miss the second edition of the TI-Nspire CX EZ-Spot.

Dismantling this TI-Nspire CX EZ-Spot manufactured in June 2011 by Inventec Corporation in its Pudong Campus in Shanghai, China reveals a very compact design based on just two printed circuit boards (PCBs) with just a few main Integrated Circuits. The Date code P-0611C of the featured TI-Nspire CX EZ-Spot refers to Revision C, also known as Firebird Color or original design. Texas Instruments introduced in March 2013 with Revision J the first major redesign of the TI-Nspire CX, known as NSC CR and in April 2014 with Revision O the second redesign known as NSC CR II, followed in October 2014 with Revision T, known as NSC CR III. Texas Instruments changed in November 2015 the design of the hardware completely and Revision W, known as NSC CR IV, consolidated all electronics of the TI-Nspire onto one PCB.

Processor: The ARM9 CPU is integrated into an ASIC with the markings ET-NS2010B-0 (T6UJ1XBG-0002), obviously from Toshiba, Japan. The ARM9 core is clocked with 132 MHz compared to the 90 MHz of the previous TI-Nspire. Learn more about the Hardware Architecture of TI’s Graphing Calculators.

Memory: Both the NAND Flash-ROM and the SDRAM with are integrated into a Multichip Package with the part designation Samsung K511F12ACA-B075. Deciphering the part number reveals the capacity of the Flash-ROM (128M Bytes) and SDRAM (32M x 16 bits):

• Product Family K5 = Samsung MCP (2 chips)
• Device Type 1 = NAND Flash Rom + Mobile SDR
• NAND Flash Density, Organization 1F = 1 Gbit, x8
• RAM Density, Organization 12 = 512 Mbit, x16
• Operating Voltage A = 1.8V NAND, 1.8V DRAM
• Flash Block Architecture C = Uniform block
• Version A = 2nd Generation
• Package Type B = FBGA
• NAND Flash Speed 0 = None
• RAM Speed 75 = 7.5 ns (133MHz@CL3)


• TI-Nspire CX EZ-Spot (January 2011)
Boot1 Code Version: 3.0.99
Boot2 Code Version: 3.0.127 (April 2011)
Boot1 Code Version: 3.0.99
Boot2 Code Version: 3.0.127 (May 2011) (September 2011) (June 2012) (June 2012) (December 2012)

You can check the ROM version of your TI-Nspire CX using the following key sequence and reading the number on your screen:

[HOME] [5] [4] (3.0)

Information provided by Xavier Andrιani.

Exam acceptance:

Since the TI-Nspire CX EZ-Spot lacks a QWERTY keyboard it is permitted (as of March 10, 2011) for use on SAT, ACT, PSAT and AP exams.


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© Joerg Woerner, May 30, 2013. No reprints without written permission.