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 TMC0571 Bare Read Only Memory BROM contains 1k*13 instruction memory and provides a ROM extension for the two DSCOM's in the TI-58 and TI-59.
|PHI1, PHI2||225||230||kHz||Opposite phases|
The TMC0571 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.