BMA222-SHUTL Bosch Sensortec, BMA222-SHUTL Datasheet - Page 27

• Manufacturer Part Number: BMA222-SHUTL
• Description: BMA222 DAUGHTERCARD FOR DEV KIT
• Manufacturer: Bosch Sensortec
• Series: -r

Specifications of BMA222-SHUTL

• Sensor Type: Accelerometer, 3 Axis
• Sensing Range: ±2g, 4g, 8g, 16g
• Interface: I²C, Serial, SPI
• Sensitivity: 64LSB/g, 32LSB/g, 16LSB/g, 8LSB/g
• Voltage - Supply: -
• Embedded: No
• Utilized Ic / Part: BMA222
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 828-1026

The parameters (0x2A) tap_shock and (0x2A) tap_quiet apply to both single tap and double tap
detection, while (0x2A) tap_dur applies to double tap detection only. Within the duration of
(0x2A) tap_shock any slope exceeding (0x2B) tap_th after the first event is ignored. Contrary to
this, within the duration of (0x2A) tap_quiet no slope exceeding (0x2B) tap_th must occur,
otherwise the first event will be cancelled.
4.8.6.1 Single tap detection
A single tap is detected and the single tap interrupt is generated after the combined durations of
(0x2A) tap_shock and (0x2A) tap_quiet, if the corresponding slope conditions are fulfilled. The
interrupt is cleared after a delay of 12.5 ms.
4.8.6.2 Double tap detection
A double tap is detected and the double tap interrupt is generated if an event fulfilling the
conditions for a single tap occurs within the set duration in (0x2A) tap_dur after the completion
of the first tap event. The interrupt is cleared after a delay of 12.5 ms.
Rev. 1.0
© Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such
as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.
Note: Specifications within this document are subject to change without notice.
tap_th
slope
single tap detection
double tap detection
tap_shock
1st tap
Figure 7: Timing of tap detection
tap_quiet
Data sheet
BMA222
Page 27
12.5 ms
tap_shock
2nd tap
tap_dur
tap_quiet
12.5 ms
Bosch Sensortec
07 March 2011
time
time
time