DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-84 Plus Pocket SE (Asia)
|Date of introduction:||January 3, 2012||Display technology:||LCD dot matrix|
|New price:||Display size:||8 * 16 characters|
|Size:|| 6.32" x 3.1" x 0.80"
160 x 80 x 21 mm3
|Weight:||5.1 ounces, 144 grams||Serial No:||1023005029|
|Batteries:||4*AAA + SR44 (35mA)||Date of manufacture:||mth 11 year 2011|
|AC-Adapter:||Origin of manufacture:||China (K)|
|Precision:||14||Integrated circuits:|| ASIC: TI-REF 84PLCR/TA1
Display: Novatek NT7564H
|Program steps:||24k Bytes, 1.5M Bytes Flash-ROM||Courtesy of:||Joerg Woerner|
Asia introduced in January 2012 with this amazing TI-84 Plus Pocket SE a
graphing calculator very similar to the TI-84 Pocket.fr
sold in France since Summer 2011. And what is so amazing with the TI-84
Plus Pocket SE? Just the size, it packs the specifications of the original
TI-84 Plus Silver Edition into a much smaller footprint.
Dismantling this TI-84 Pocket Plus SE manufactured in November 2011 by Kinpo Electronics, Inc. reveals a design using the components and Operating System of the recent TI-84 Plus SE on a very compact printed circuit board (PCB):
|• TI-REF84PLCR/TA1: Z-80 microprocessor, RAM, USB-Port
and supporting logic
• Macronix 29LV160: 2M Byte Flash-ROM
• Novatek NT7564H: Single-chip 64*120 pixel display driver
The picture on the right gives an enhanced view of the ASIC that clocks the Z-80 microprocessor with 15 MHz and incorporates the RAM, USB-Port and logic. Please notice the smaller package of the new TI-REF 84PLCR/TA1 ASIC compared with the previous TI-REF 83PLUSB/TA2 or TI-REF 84PLUSB/TA3 found in the TI-84 Plus family manufactured between 2004 and 2007.
Recently members of the Graphing Calculator Programming community under the lead of Xavier Andréani made a very interesting discovery:
|• All TI-84 Plus / S.E. with the TA2 or TA3 ASIC have access
to 128k Byte RAM.
• All TI-84 Plus / S.E. with the TA1 ASIC have access to only 48k Byte RAM using
the same assembly commands.
Plus Pocket SE manufactured in November 2011 makes use of
one Macronix Flash-ROM with 2M Byte capacity.
The driver circuit of the LC-Display was traditionally manufactured by Toshiba for Texas Instruments' graphing calculators. This TI-84 Plus Pocket SE manufactured in 2011 shows with the Novatek NT7564H a one-by-one replacement. It is just a bare chip mounted on a flexible piece of circuit board attached between the display and the main PCB.
A serial port of the calculators allows the connection to the Calculator-Based Laboratory system CBL, its successor CBL 2, the Calculator-Based Ranger CBR and its successor CBR 2.
2.55MP (January 11, 2011, actual in November 2011)
You can check the ROM version of your TI-84
Plus Pocket SE using the following key sequence and reading the number on your screen:
[2nd] [MEM] 
Information provided by ticalc.org and Xavier Andréani.
The TI-84 Plus Pocket SE is permitted (as of November 2, 2011) 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, 2015. No reprints without written permission.