HOLTEK HT93214 Series 1-memory Tone/Pulse Dialer Manual
Update: 29 September, 2023
The HT93214 is a series of dialers designed for low-cost telephone set applications with expandable features such as lock function, keytone, and LCD display interface. With a 4x4 keyboard, it performs normal tone/pulse switchable dialing and provides one-key redialing function with a 32-digit memory for speed dialing. An on-chip oscillator is built-in to work with an external 3.58MHz crystal or ceramic resonator for accurate timing. The HT93214 provides 300ms (F1 key) and 600ms (F2 key) of flash time; Tone dialing and 10pps, 20pps selection with 1/2 M/B ratio for pulse.