CF1155 Datasheet | Nippon Precision Circuits Inc

OVERVIEW The CF1155 series are CMOS melody LSIs that, together with a battery and piezoelectric buzzer, operate in one of 3 melody modes determined by input level or bonding options. They also feature an oscillator stop function in non-play mode and a variable pull-down resistance function that responds to input levels in order to reduce power consumption, reduce cost, and extend battery life, making them ideal in a wide range of applications including greeting cards and toys. FEATURES s s s s s s Requires few external ponents 1.2 to 3.6V wide operating voltage range Low power consumption 3 melody modes (bonding option) Oscillator stop function in non-play mode Power saving pull-down resistor built-in s s s s s RC oscillator circuit Power-ON initialization function 2 VSS pad connections Wide pitch dynamic range (G3 to D7) Chip form PAD LAYOUT and COORDINATES (Unit: µm) Number 1 Pad OUT OUT VDD TC T2 T1 VSS TO OSH LH VSS X 930 529 155 155 155 155 223 486 750 1041 1075 Y 1075 1075 1075 887 608 420 155 155 155 155 420 (1230,1230) 2 3 4 5 TC T2 T1 HA1155 5 6 7 8 9 11 10 7 8 9 (0,0) VSS TO OSH 10 11 Chip size: 1.23 × 1.23mm Chip thickness: 300 ± 30µm T1, T2, T C , and TO bonding is not required. ORDERING INFORMATION D e vice CF1155 P ackag e Chip form NIPPON PRECISION CIRCUITS- 1 CF1155 series PAD DESCRIPTION Name OSH, LH O U T, O U T VDD VSS T1, T2, T C 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. Piezoelectric speaker driver outputs. Both pins are LOW in non-play mode. OUT is LOW and O U T is HIGH during output for a m usical rest note. Both pins are HIGH during the gap between musical notes. Supply. The rear surface of the chip is V D D level. Ground Test inputs. Pull-down resistor built-in. Test output....