CF1156 Datasheet (Nippon Precision Circuits) - CMOS melody LSIs with built-in LED driver

CF1156, CMOS melody LSIs with built-in LED driver

Name OSH, LH LO BO VDD VSS T1, T2, TC TO Function Melody mode control inputs.

Built-in pull-down resistors mean LOW-level signals are obtained when inputs are open circuit.

The resistance of the pull-down resistor varies with the applied voltage, as described in the Electrical Characteristics.

LED d

CF1156 Features

* I I I I I I LED direct drive Requires few external components 2.0 to 3.6V wide operating voltage range Low power consumption 3 melody modes (bonding option) Oscillator stop function in non-play mode I I I I I I Power saving pull-down resistor built-in RC oscillator circuit Power-ON initialization