Data Sheet
93
Rev. 1.00
2017-07-31
TLE9262BQXV33
Wake and Voltage Monitoring Inputs
12.2.1
Wake Input Configuration
To ensure a defined and stable voltage levels at the internal comparator input it is possible to configure
integrated current sources via the SPI register
WK_PUPD_CTRL
. In addition, the wake detection modes
(including the filter time) can be configured via the SPI register
WK_FLT_CTRL
. An example illustration for the
automatic switching configuration is shown in
Figure 40
.
Note:
If there is no pull-up or pull-down configured on the WK input, then the respective input should be
tied to GND or VS on board to avoid unintended floating of the pin and subsequent wake events.
Figure 40 Illustration for Pull-Up / Down Current Sources with Automatic Switching Configuration
Config A and B are intended for static sense with two different filter times.
Table 20 Pull-Up / Pull-Down Resistor
WKx_PUPD_
1
WKx_PUPD_
0
Current Sources Note
0
0
no current
source
WKx input is floating if left open (default setting)
0
1
pull-down
WKx input internally pulled to GND
1
0
pull-up
WKx input internally pulled to internal 5V supply
1
1
Automatic
switching
If a high level is detected at the WKx input the pull-up source
is activated, if low level is detected the pull down is activated.
Table 21 Wake Detection Configuration and Filter Time
WKx_FLT_1 WKx_FLT_0 Filter Time
Description
0
0
Config A
static sense, 16µs filter time
0
1
Config B
static sense, 64µs filter time
1
0
Config C
Cyclic sense, Timer 1, 16µs filter time. Period, On-time
configurable in register
TIMER1_CTRL
1
1
Config D
Cyclic sense, Timer 2, 16µs filter time. Period, On-time
configurable in register
TIMER2_CTRL
I
WK
I
WKth_min
I
WKth_max
V
WKth
