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F75373S Datasheet(PDF) 10 Page - Feature Integration Technology Inc. |
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F75373S Datasheet(HTML) 10 Page - Feature Integration Technology Inc. |
10 / 49 page ![]() Fintek Feature Integration Technology Inc. V0.25P 5 F75373 VIN (Lower than 2.048V) R1 8-bit ADC with 7.8125mV LSB Typical Thermister Connection RTHM Pin 14/15 Voltage Inputs 10K, 25 C R2 R VREF 10K, 1% VIN1(Max2.048V) VIN(Higher than 2.048V) (directly connect to the chip) Pin 13 3VCC (directly connect to the chip) Figure 5-3 VIN3.3 50K 50K 5.2 Access Interface The F75373S provides one serial access interface, Serial Bus, to read/write internal registers. The address of Serial Bus is configurable by using power-on trapping. The pin 3 (PWMOUT1/ADDR_TRAP) is multi-function pin. During power-on, this pin serves as input detection of logic high or logic low. This pin is default pull-down resistor with 100K ohms mapping the Serial Bus address 0x5A (0101_1010). Another Serial Bus address 0x5C (0101_1100) is set when external pull-up resistor with 10K ohms is connected in this pin. (a) Serial bus write to internal address register followed by the data byte 0 Start By Master 01 01 1 01 D7 D6 D5 D4 D3 D2 D1 D0 Ack by 373S R/W Ack by 373S SCL SDA D7 D6 D5 D4 D3 D2 D1 D0 Stop by Master SCL SDA (Continued) 78 0 7 8 0 78 Frame 2 Internal Index Register Byte (Continued) Frame 3 Data Byte Frame 1 Serial Bus Address Byte Figure 1. Serial Bus Write to Internal Address Register followed by the Data Byte |
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