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
 Flash: 29LV160
 Display: Novatek NT7564H
Program steps:  24k Bytes, 1.5M Bytes Flash ROM Courtesy of:  Joerg Woerner

Texas Instruments Asia introduced in January 2012 with this amazing TI-84 Plus Pocket SE a graphing calculator very similar to the TI-84 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.

This TI-84 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] [1]

Information provided by and Xavier Andréani.

Exam acceptance:

The TI-84 Plus Pocket SE is permitted (as of November 2, 2011) for use on SAT, ACT, PSAT and AP exams.


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© Joerg Woerner, May 30, 2015. No reprints without written permission.