DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-Nspire CM (Chinese Language - Engineering Validation Tests 1)
|Date of introduction:||Never||Display technology:|| LCD dot matrix
16-bit color, backlit
|New price:||Display size:||240 * 320 pixels|
|Size:|| 7.5" x 3.4" x 0.65"
190 x 87 x 16 mm3
|Weight:||8.5 ounces, 204 grams||Serial No:||EVT1-217|
|Batteries:||3.7L0800SP Li-Ion||Date of manufacture:||mth 02 year 2011|
|AC-Adapter:||Origin of manufacture:||China|
|Precision:||14||Integrated circuits:|| CPU: ET-LC2010B-0 (T6UJ1XBG-0002)
SDRAM and Flash MCP: Samsung K511F57ACC
|Program steps:||32M Bytes, 100M Bytes Flash ROM||Courtesy of:||Joerg Woerner|
TI-Nspire CM (Chinese Language) with the serial number EVT1-217 was used for
Engineering Validation Tests (EVT - learn more about the
Five Engineering Stages) of the later
Dismantling this TI-Nspire CM EVT1 manufactured already in February 2011 by Inventec Corporation in its Pudong Campus in Shanghai, China reveals a design similar to the original TI-Nspire CX centered around a tiny System-on-Chip. Learn more about the Hardware Architecture of TI’s Graphing Calculators
Processor: The ARM9 CPU is integrated into an ASIC with the markings ET-LC2010B-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. Based on observations from the original TI-Nspire and the recently discovered Revision W (NSC CR IV), we assume that the ASIC incorporates a ROM with a capacity of 128k Bytes used for the first-stage bootloader ("Boot 1") and a SRAM with a capacity of 128k Bytes.
Memory: Both the NAND Flash-ROM and the SDRAM with are integrated into a Multichip Package with the part designation Samsung K511F57ACC-B075. Deciphering the part number reveals the capacity of the Flash-ROM (128M Bytes) and SDRAM (16M 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 57 = 256 Mbit, x16
• Operating Voltage A = 1.8V NAND, 1.8V DRAM
• Flash Block Architecture C = Uniform block
• Version C = 4th Generation
• Package Type B = FBGA
• NAND Flash Speed 0 = None
• RAM Speed 75 = 7.5 ns (133MHz@CL3)
• TI-Nspire CM EVT1
3.1.0 DEVBUILD (February 2011)
Boot1 Code Version: 3.0.99
Boot2 Code Version: 3.10.0
You can check the ROM version of your TI-Nspire CM-C using the following key sequence and reading the number on your screen:
[HOME]  
Since the TI-Nspire CM-C lacks a QWERTY keyboard it is permitted (as of May 30, 2013) for use on SAT, ACT, PSAT and AP exams.
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, May 30, 2013. No reprints without written permission.