LC72701M
Overview
The LC73701M is a DTMP/pulse output dual-system dialer CMOS LSI for use in push-button telephones. It provides an on-chip serial interface and operates under the control of data sent over that serial interface. The LC73701M can be easily controlled by the system CPU using this dedicated interface.
- The dial pulse make ratio can be specified to be either 33 or 39%.
- Wide operating voltage range Pulse mode: VDD = 1.5 to 5.5 V DTMF mode: VDD = 2.0 to 5.5 V
Package Dimensions unit: mm 3095-MFP18
[LC73701M]
Functions
- Functions as a dialer that is controlled over a serial interface.
- The built-in oscillator circuit (f OSC = 4.19 MHz) can use either a crystal oscillator or a ceramic resonator as its oscillator element.
- The adoption of a high-precision (±0.04%) DTMF signal frequency divider circuit allows a ceramic resonator to be used as the oscillator element.
- The buffer memory can store up to 32 digits of 5-bit data.
- Mode change and pause mands can also be stored as...
