QST508AB0 datasheet(49/51 Pages) STMICROELECTRONICS

49 / 51 page

QST108

Revision history

49/51

Revision history

Table 40.

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 and 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 and 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 18.

Added Figure 5: Optional LED schematic on page 17.

Updated Section 4.5: I2C mode on page 15.

Added Section 5.2.3: Key balance on page 25.

Updated Section 6.4: Supply current characteristics on page 31.

Added Section 6.5: Capacitive sensing characteristics on page 32.

and Section 6.7: RESET pin on page 36.

Updated Table 30: I²C characteristics on page 37.

22-Nov-2007

Document status promoted from Preliminary Data to Datasheet.

Added ECOPACK® information.

Updated CX value in Figure 2: QTouch™ measuring circuitry on

page 7.

Added Caution note in Section 3.10: Drift compensation on page 11.

Added Section 4.3: Low power mode on page 13.

Updated hex values in Table 9: I²C address versus option resistor on

page 21.

Updated Table 28: Supply current characteristics on page 34,

Table 30: Capacitive sensing parameters on page 35 and added

Figure 10: IDD Sleep mode current characteristics on page 34.

Added Table 35: IRQ specific pin characteristics on page 40.

Added Section 9: Device revision information on page 47.

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