DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-83 Premium CE Edition Python
|Date of introduction:|| March 13, 2019
Available: June 29, 2019
|Display technology:|| LCD dot matrix
16-bit color, backlit
|New price:||EUR 129.00 (SRP 2019)||Display size:||240 * 320 pixels|
|Size:|| 7.5" x 3.2" x
190 x 82 x 16 mm3
|Weight:||6.3 ounces, 179 grams||Serial No:||1115007448|
|Batteries:||3.7L1200SPA Li-Ion||Date of manufacture:||mth 04 year 2019 (M)|
|AC-Adapter:||AC9211U||Origin of manufacture:||Philippines (L)|
|Precision:||14||Integrated circuits:|| ASIC: JB-007-01
Flash: Winbond 25Q32JV
Coprocessor: Atmel ATSAMD21E18A
Display: Ilitek ILI9335
|Program steps:||154k Bytes, 3M Bytes Flash ROM||Courtesy of:||Joerg Woerner|
Texas Instruments announced on January 27, 2015 a colorful addition to the TI-84 Plus family of graphing calculators - the new TI-84 Plus CE and successor of the TI-84 Plus C Silver Edition introduced just 2 years earlier.
It features full-color capabilities, a high-resolution, back-lit screen, rechargeable batteries and an updated operating system in a housing 30 percent thinner and 30% lighter than the outgoing mode and yet sporting six times the memory
and operating at three times the speed.
The TI-83 Premium CE was developed for France and sports a "Press-to-Test" mode to delete parts of the Memory and disable Archives, giving the teacher with a small LED a visual feedback.
With Python making its way into the calculator market, Texas
Instruments made early in 2019 an external module for the TI-83 Premium CE available, that allows it to run programs written in Python. This TI-83 CE Premium Edition Python introduced in June 2019 integrates the
microcontroller of the external module running the Python Interpreter into the Graphing calculator
as a Coprocessor.
Dismantling this TI-83 Premium CE Edition Python manufactured in April 2019 by Kinpo Electronics, Inc. in the Philippines reveals at first glance a very clean and familiar design sporting the small LED with light pipe for the visual Press-to-Test feedback known from the TI-83 Premium CE and TI-84 Plus CE-T. A closer inspection and comparing it with the original TI-83 Premium CE and its near identical twin TI-84 Plus CE shows an unexpected, major redesign with a new ASIC and Serial NOR Flash-ROM in addition to the Coprocessor:
• JB-007-01 ASIC instead of ET 2014-01
ASIC: eZ80 microprocessor, 256k Bytes Static RAM, USB-Port,
supporting logic and Cache Memory
• Winbond Electronics Corporation 25Q32JV: 32M Bits Serial NOR Flash ROM
instead 4M Bytes Parallel NOR Flash ROM
• Atmel ATSAMD21E18A ARM Cortex-M+ microcontroller (not used with TI-84 Plus CE)
• Ilitek ILI9335: Single-chip 320*240 pixel display driver (unchanged)
Please notice that the TI-84 Plus CE with Hardware Revision M uses an identical printed Circuit board (PCB) but omits the Coprocessor. We expect to find the Coprocessor with the TI-84 Plus CE-T Python Edition announced by Texas Instruments for availability in Summer 2020.
picture on the right gives an enlarged view of the JB-007-01 ASIC that clocks the eZ80
microprocessor with 48 MHz and incorporates the RAM, USB-Port, logic and Cache
Memory. The otherwise more or less identical TI-84 Plus CE sports in Hardware
Revision M a JB-007-00 ASIC. Learn more about the Hardware Architecture of TI’s Graphing Calculators.
This TI-83 Premium CE Edition Python manufactured in April 2019 makes use of one Winbond 25Q32JV Serial NOR Flash ROM with 32M bits capacity in a tiny 8-pin package. Interesting to learn that in 2020 a serial memory chip allows on average much faster access time than a parallel memory chip tracing back to the 90s and consequently improving the user experience tremendously. From an engineering standpoint not the easiest task, serial Flash ROMs have a rather slow access time to random memory locations but stream data from consecutive memory addresses very fast. Texas Instruments added into the ASIC plenty of Cache Memory to balance this tradeoff of serial memory chips.
The Coprocessor of the TI-83 Premium CE Edition Python running the Python Interpreter is actually the Atmel ATSAMD21E18A microcontroller known from the TI-Python module. This ARM Cortex-M+ based microcontroller runs at 48 MHz and integrates 256k Bytes Flash ROM, 32k Bytes Static RAM and a huge portfolio of peripherals into a tiny 32-pin package.
While the early members of the TI-84 Plus calculator family use AAA-sized alkaline batteries, accommodate the Color versions an internal Li-ion battery with a capacity of 1,200 mAh and a voltage of 3.7 Volt for a typical operating time of 50 hours. A USB type wall charger is included with each unit but for classrooms is the TI-84 Plus CE Charging Station available. It holds up to 10 calculators and charges them with two small contacts located in the front of the calculator.
The TI-83 Premium CE Edition Python dropped the serial port known from earlier members of the TI-84 Plus family and doesn't support the ViewScreen panel and the TI-Presenter with the Presentation Link Adapter anymore. The USB interface of the TI-83 Premium CE Edition Python calculator connects directly with the Calculator-Based Ranger CBR 2 introduced in 2004, the Vernier EasyLink and EasyTemp systems.
The TI-SmartView™ CE Emulator Software for the TI-83 Premium CE Edition Python allows educators to project a representation of the calculator’s display to the entire class.
The TI Connect™ CE computer software allows for connectivity between a computer and the TI-83 Premium CE Edition Python to transfer data, update the Operating System (OS), download Calculator Software Applications (Apps), and to edit and load programs to the calculator
new operating system 5.x of the TI-83 Premium CE Edition Python is based on the OS 4.0 known from
the TI-84 Plus C Silver Edition but they are not compatible due to the different
5.3.5 (March 7, 2019)
5.3.6 (April 27, 2020) 5.5.2 (May 20, 2020)
5.3.6 (April 27, 2020)
5.5.2 (May 20, 2020)
You can check the ROM version of your
TI-83 Premium CE Edition Python using the following key sequence and reading the number on your screen:
[2nd] [MEM] 
Information provided by Xavier Andréani.
The TI-84 Plus CE is permitted (as of June 20, 2017) 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, 2019. No reprints without written permission.