link to page 6 link to page 6 link to page 11 link to page 13 link to page 25 link to page 25 link to page 26 link to page 26 link to page 26 link to page 27 link to page 27 link to page 27 link to page 28 link to page 29 link to page 29 link to page 30 link to page 31 link to page 34 link to page 35 link to page 37 link to page 39 link to page 40 link to page 58 ZSSC3240Figures Figure 1. Pin Assignments for 4 × 4 mm2 24-QFN Package – Top View ... 6 Figure 2. Pin (Pad) Assignments for Bare Die ... 6 Figure 3. Main Operating Modes of the ZSSC3240 ...11 Figure 4. Analog Sensor Front-End Topology ..13 Figure 5. SPI Configuration CPHA=0 ...25 Figure 6. SPI Configuration CPHA=1 ...25 Figure 7. SPI Command Request ..26 Figure 8. SPI Read Data ..26 Figure 9. SPI Read Status ..26 Figure 10. I2C Command Request ..27 Figure 11. I2C Read Data ..27 Figure 12. I2C Read Status ..27 Figure 13. General Block Schematic of the OWI Interface ..28 Figure 14. OWI Timing Diagram...29 Figure 15. OWI Extra (Activation) Pulse for Concurrent OWI and Analog Output Configuration ..29 Figure 16. OWI Command Request ...30 Figure 17. OWI Response by ZSSC3240 ..31 Figure 18. Example Configuration for the Measurement Scheduling and Cyclic Mode Operation ..34 Figure 19. DAC and Analog Output Topology..35 Figure 20. Current Loop Configuration ...37 Figure 21. EOC and Interrupt Thresholds ..39 Figure 22. Digital IC Section Architecture ..40 Figure 23. LDOctrl Application Topology ...58 Apr.15.20 Page 4 Document Outline 1. Pin Assignments 2. Pin Descriptions 3. Absolute Maximum Ratings 4. Recommended Operating Conditions 5. Electrical Characteristics 6. Device Description 6.1 Signal Flow 6.2 Analog (Sensor) Front-End 6.2.1. Programmable-Gain Amplifier (PGA) 6.2.2. Analog-to-Digital Converter (ADC) 6.2.3. Internal Temperature Sensor 6.2.4. Supported Supplies for Sensor Elements and Additional, External Temperature Sensing 6.3 On-Chip Diagnostics 6.4 Digital Interfaces 6.4.1. SPI 6.4.2. I2C 6.4.3. One-Wire-Interface, OWI 6.5 Measurement and Output Options 6.5.1. Single Measurements, Digital Raw Results, and SSC Results 6.5.2. Cyclic, Continuous, Repeated Measurements – Measurement Scheduler 6.5.3. Analog Outputs: Digital-to-Analog Converter (DAC) 6.5.4. Output Interrupt Signaling 6.6 System Setup and Control 6.6.1. Digital Commands 6.6.2. Nonvolatile Memory (NVM) 6.6.3. Digital Sensor-Signal-Conditioning Mathematics 6.7 External, Extra LDO (LDOctrl) for Applications for > 5.5V 7. Calibration 8. Package Outline Drawings 9. Marking Diagram 10. Ordering Information 11. Glossary 12. Revision History