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 REF 84PLCR/TA1: Z80 microprocessor, RAM, USB-Port
and supporting logic
• Macronix 29LV160: 2M Bytes 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 Z80 microprocessor with 15 MHz and incorporates the RAM, USB-Port and logic. Learn more about the Hardware Architecture of TI’s Graphing Calculators. 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 Bytes RAM.
• All TI-84 Plus / S.E. with the TA1 ASIC have access to only 48k Bytes RAM using
the same assembly commands.
Plus Pocket SE manufactured in November 2011 makes use of
one Macronix Flash ROM with 2M Bytes 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.