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IC Block Diagram 17 18 19 20 21 22 24 25 16 26 15 28 14 28 13 IT2418 29 12 8 7 S4 S5 S6 AVSS CREF IADJ S7 BP 6 9 5 32 3 10 4 11 31 2 30 1 GPIO6 GPIO7/BZO ASS HWMD S0 S1 S2 S3 23 ADD1/SDI/SEN0 ADD0/CSN/SEN1 DVSS DVDD SCL/SCLK/MOT1 SDA/SDO/MOT0 GPIO0 GPIO1 IT2418 LM78D05 -21- GPIO2 GPIO3 GPIO4/BZMD0 GPIO5/BZMD1 INTN/ACT/BZO ENC PD IFMD/OD