DATAMATH CALCULATOR MUSEUM
With the TMC05xx building blocks Texas Instruments created a novel architecture for scalable scientific calculators. The architecture uses minimum a 2 chip design with the Arithmetic chip TMC0501E and the SCOM (scanning read only memory) but was expandable to a maximum of 8 SCOM's, additional RAM as program memory for programmable calculators, additional RAM for general purpose registers and even a chip driving a printer.
The TMC0541 Constant Read Only Memory CROM consists of 5k*8 preprogrammed program steps and is contained in the interchangable library module of TI-58 and TI-59. Texas Instruments introduced a total of 13 different modules named TMC0541 to TMC0553. Find a list of the modules here. Third party companies added some dozens of different modules, they could be identified with the name TMC0540 and a customer specific ROM code.
If you own any third party module, write me a short notice. I like to collect the ROM codes for this datasheet. Thanks in advance, Joerg.
TI-58, TI-58C, TI-59
|PHI1, PHI2||225||230||kHz||Opposite phases|
The TMC054x uses a
standard DIP-8 package.
|1||V||Negative Voltage VGG||8||V||Common Voltage|
|2||V||Negative Voltage VDD||7||I||Clock Input 1|
|3||O||Instruction words||6||I||Clock Input 2|
|4||I||Calculating status||5||I||External access|
If you have additions to the above datasheet please email: firstname.lastname@example.org.
© Joerg Woerner, February 02, 2001. No reprints
without written permission.