TLC770X Datasheet, PDF (19/27 Pages) Texas Instruments – BiCMOS SUPPLY VOLTAGE SUPERVISORS

The inputs RESIN and CONTROL are not needed in this application, and are therefore connected to a defined High
or Low level.
For other voltage values, an external resistive voltage divider at the SENSE input (Figure 17.) is needed.
Figure 17. Voltage monitoring circuit for a microcomputer system with the TLC7701
For the TMS70C20, a minimum supply voltage of 2V is required. The threshold voltage V_t’ of the monitoring circuit is
therefore set to this same value with the help of a voltage divider R₁/R₂ .
V_t ’ = V_ref ⋅ ^{(R1 + R2 )}
R₂
with V_ref = 1.1 V
The Reset signal can also be manually initiated with the RESET key.
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