DATAMATH CALCULATOR MUSEUM
|
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 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.
| Usage |
TI-58, 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 TMC0571 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.
