U9131X
U9131X is TONE/PULSE DIALER manufactured by Unisonic Technologies.
UNISONIC TECHNOLOGIES CO., LTD
Preliminary
TONE/PULSE DIALER WITH REDIAL FUNCTION
CMOS IC
- DESCRIPTION
The UTC U9131X series are monolithic ICs that offer the dialing signals in either pulse or tone mode. The UTC U9131X series feature a redial memory.
- Features
- Uses 4×4 keyboard
- Pulse-to-tone (P→T) keypad for long distance call operation
- Easy operation with redial, flash, pause, and P→T keypads
- 32 digits for redial memory
- Flash, Pause, P→T (pulse-to-tone) can be stored as a digit in memory
- Switchable dialing mode：DTMF/Pulse
- Switchable beak/make ratio
- Minimum tone output duration: 100mS
- Minimum intertone pause: 100mS
- On-chip power-on reset
- Uses...
