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SM1350 Folha de dados(PDF) 3 Page - Nippon Precision Circuits Inc |
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SM1350 Folha de dados(HTML) 3 Page - Nippon Precision Circuits Inc |
3 / 21 page SM1350 series NIPPON PRECISION CIRCUITS—3 PIN DESCRIPTION Number Name I/O State1 1. U = pull-up resistor connection, SU : pull-up resistor connection only when melody output starts, P = p-channel open drain, C = complementary output. U or O = pull-up resistance or open drain (master slice) Description2 2. BTL/A-class output mode is selected by mask option. 1 VDD – – Supply pin 2S0 I SU Binary select mode: Phrase select pins. Serial select mode: S0 and S1 control melody output. 3S1 I SU 4S2 I SU 5S3 I SU 6 MODE I SU Melody select mode control. Binary mode when LOW, and serial mode when HIGH. 7 LH I SU Melody output mode control. One-shot when LOW, and level hold when HIGH. 8 STOP I U or O One-shot melody mode: Melody output stop control. Level hold melody mode: Invalid input. 9 STN I U or O Melody start control 10 BUSYN O C Busy output signal. LOW when a melody is output. 11 CT O C External control pulse output 12 ICN I U Initialization clear input 13 VSS – – Ground pin 14 VOL I – Volume adjust control. Volume adjusted using an external resistor. 15 SPN O P 9-bit D/A converter output in BTL output mode. VOL current output in A-class output mode. 16 SP O P BTL output mode: 9-bit D/A converter output. A-class output mode: 10-bit D/A converter output. 17 MSB O C BTL output mode: Signed-bit output. HIGH when no melody is output. I U A-class output mode: BUSYIN input 18 MSBN O C BTL output mode: Signed-bit output. HIGH when no melody is output. A-class output mode: ENDN output. HIGH when no melody is output. 19 T1N I U Test signal inputs 20 T2N I U 21 T3N I U 22 TO O C Test signal output. 62.5 kHz output when not in test mode. 23 XTN O – Oscillator output 24 XT I – Oscillator input |
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