Owner's manual
Table Of Contents
- Features
- Description
- Applications
- Specifications
- Power Consumption and DC Characteristics
- Switching Performances
- Timing Diagrams: Slow and Fast SPI Interface
- Functional Description
- Sensor and Block Diagram
- Function Registers
- SPI Interface General Description
- Control Interface (Slow SPI)
- Image Capture (Fast SPI)
- Navigation (Slow SPI)
- Temperature Stabilization Function and Watchdog
- Power Management
- Packaging Mechanical Data
- Ordering Information
- Appendix A
- Appendix B
- Appendix C
- Appendix D
14
AT77C104B
5347B–BIOM–08/04
Enctrl Register Register Name:Enctrl (7 bits)
Access Type:Read/Write
Function:Interrupts control
• CLICKEN: click interrupts enable
0: default
1: click IRQ enabled
IRQ is generated when a click is detected.
• MOVEN: movement interrupts enable
0: default
1: movement IRQ enabled
IRQ is generated when an X or Y movement is detected.
• TRANSITEN: not used, for testing only
• SLICEN: not used, for testing only
• READERREN: read error interrupts enable
0: default
1: read error IRQ enabled
IRQ is generated when a read error is detected.
Note: The interrupt is cleared after the status register is read.
Heatctrl Register Register Name:Heatctrl (7 bits)
Access Type:Read/Write
Function:Heating control
• HEAT: sensor heating
0: default, no heating
1: heating
The default value is recommended to optimize power consumption.
• WDOGEN: watchdog enable
0: default
1: watchdog enabled
Watchdog automatically stops heating of the sensor after a time-out.
b6 b5 b4 b3 b2 b1 b0
CLICKEN MOVEN TRANSITEN SLICEN READERREN – –
0000000
b6 b5 b4 b3 b2 b1 b0
HEAT WDOGEN HEATV (MSB) HEATV(LSB) – – –
0000000