You need two specific files:
/* MT8870 DTMF Decoder Interface Q1 -> Pin 3 Q2 -> Pin 4 Q3 -> Pin 5 Q4 -> Pin 6 StD (Delayed Steering) -> Pin 7 (Used to detect when a new key is pressed) */
You need two specific files:
/* MT8870 DTMF Decoder Interface Q1 -> Pin 3 Q2 -> Pin 4 Q3 -> Pin 5 Q4 -> Pin 6 StD (Delayed Steering) -> Pin 7 (Used to detect when a new key is pressed) */ mt8870 proteus lib 35