DATAMATH  CALCULATOR  MUSEUM

Texas Instruments TMC0583

• 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 SCOMs, additional RAM as program memory for programmable calculators, additional RAM for general purpose registers and even a chip driving a printer. 

The TMC0583 Double Scanning Read Only Memory DSCOM contains 2.5k*13 instruction memory and 16*16 digits constants.

The scanning function is not used with the known calculators.

• Family Members and Applications

Type Calculators Function
TMC0581 SR-51-II DSCOM
TMC0582 TI-58, TI-59, SR-60A DSCOM 1, with TMC0571
TMC0583 TI-58, TI-59, SR-60A DSCOM 2, with TMC0571
TMC0584 SR-60(A) DSCOM
TMC0587 TI-5230 DSCOM 1, with BROM
TMC0588 TI-5230 DSCOM 1, with TMC0572
TMC0580/CD2401 TI-58C DSCOM 1, with TMC0573
TMC0580/CD2402 TI-58C DSCOM 2, with TMC0573

• Technical Specifications

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

• Packaging

The TMC0583 uses a 0.4” wide 28-pin SPDIP (Shrink Plastic Dual In-line Package with a 0.07” / 1.778 mm lead pitch).

• Pin Configuration

Pin IO Function Pin IO Function
1 O   28 O  
2 V Negative Voltage VGG 27 O  
3 V Negative Voltage VDD 26 O  
4 IO SCOM Interface D0 25 O  
5 IO SCOM Interface D1 24 O  
6 IO SCOM Interface D2 23 O  
7 IO SCOM Interface D3 22 O  
8 O Instruction words 21 O  
9 I Calculating status 20 O  
10 I External access 19 O  
11 I Clock Input 2 18 O  
12 I Clock Input 1 17 O  
13 V Common Voltage 16 O  
14 O   15 O  

 

horizontal rule

If you have additions to the above datasheet please email: joerg@datamath.org.

© Joerg Woerner, February 02, 2001. No reprints without written permission.