OPTIREG™ SBC TLE9274QXV33
Wake input
10.2.1
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. The Table 16 shows the possible pull-up and
pull-down current.
Table 16 Pull-up/pull-down resistor
WK_PUPD_1 WK_PUPD_0 Output current Note
0
0
No current
source
WK is floating if left open (default setting)
0
1
Pull-down
current
WK input internally pulled to GND
1
1
0
1
Pull-up current WK input internally pulled to 5 V
Automatic
switching
If a HIGH level is detected the pull-up current is activated, if
LOW level is detected the pull down current is activated
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 and waking of the pin.
An example illustration of automatic switching configuration is shown in Figure 32.
IWKth_min
IWKth_max
IWK
VWKth
Figure 32 Illustration for pull-up/pull-down current sources with automatic switching configuration
Datasheet
74
Rev.2.0
2022-05-06
INFINEON [ Infineon ]
