DATAMATH CALCULATOR MUSEUM |
Features |
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.
Usage |
TI-58, TI-58C, TI-59
Technical Specification |
Item | Min | Typ | Max | Unit | Comments |
VSS | 0 | V | |||
VDD | -10.5 | -10.0 | -9.5 | V | |
VGG | -16.3 | -15.8 | -15.3 | V | |
PHI1, PHI2 | 225 | 230 | kHz | Opposite phases |
HousingThe TMC054x uses a
standard DIP-8 package. | |
Pin Description |
Pin | IO | Function | Pin | IO | Function |
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: joerg@datamath.org.
© Joerg Woerner, February 02, 2001. No reprints
without written permission.