The document provides preliminary data for the Siemens PSB 8510-X family of Programmable Dialing Circuits (PDC). These devices are specifically designed to implement dual tone multifrequency (DTMF) and pulse dialing (PD) directly on a chip. The IC can be connected directly to a standard push button keyboard with up to 20 buttons, depending on the specific version.
| Technology | Advanced CMOS technology |
|---|---|
| Dialing Modes | Pulse (PD) and dual tone multi frequency (DTMF) |
| Redial Capacity | Up to 22 digits with data retention monitoring |
| Frequency Pairs | 12 or 16 different frequency pairs |
| Supply Voltage (Vcc) | Low data retention voltage (1.2 V) |
| Oscillator Frequency | 3.58 MHz |
A standard 3.58 MHz TV crystal or an adequate ceramic resonator must be connected to the OSC1 and OSC2 pins.
The device supports last number redial up to 22 digits with data retention monitoring.
Yes, it can be connected directly to a standard push button keyboard (single contact matrix) without mechanical protection.