QST108 datasheet(37/38 Pages) STMICROELECTRONICS

37 / 38 page

QST108

Revision history

37/38

Revision history

Table 31.

Document revision history

Date

Revision

Changes

8-Jun-2007

Initial release.

15-Jun-2007

Datasheet status changed to Preliminary Data.

26-Sep-2007

Removed Beeper function.

Changed LED output pins to GPO pins.

Updated pin names and functions in Section 2: Pin description on

page 5.

Added Figure 2: QTouch™ measuring circuitry on page 7.

Changed order of chapters in Section 3 for better comprehension.

Removed Simplified independent output mode from Section 4:

Device operating modes on page 11. Independent output mode

renamed Stand-alone mode.

Added Section 4.2: Reset and power-up on page 11.

Removed Power supply option chapter from Section 4.4.2: Option

descriptions on page 14.

Updated Table 6: Max On-Duration (MOD) truth table on page 14

and Table 7: Output mode (OM) truth table on page 15.

Updated Figure 3: Stand-alone mode typical schematic on page 13

and Figure 4: I2C mode typical schematic on page 16.

Updated Table 9: I²C address versus option resistor on page 17.

Added Figure 5: Optional LED schematic on page 18.

Updated Section 4.5: I2C mode on page 15.

Added Section 5.2.3: Key balance on page 24.

Updated Section 6.4: Supply current characteristics on page 29.

Added Section 6.5: Capacitive sensing characteristics on page 30.

and Section 6.7: RESET pin on page 34.

Updated Table 29: I²C characteristics on page 35.

QST108 Datasheet(PDF) 37 Page - STMicroelectronics