User Manual
35
Rev. 1.1
2019-03-18
TLE984xQX
Microcontroller with LIN and Power Switches for Automotive Applications
Power Management Unit (PMU)
Figure 9
Stop Mode Wakeup Timing
The wake-up features to terminate the Stop Mode are equivalent to those which are used for Sleep-exit. The
asynchronous wake-up works using a LIN message or an event (rising edge/falling edge) at one of the MON
inputs. In addition to the asynchronous wake-up over high-voltage inputs (MONs) the Stop Mode terminates
by an event at one of the GPIO pins. The wake-up configuration of every MON and GPIO input is stored in the
corresponding XSFR. The configuration for the high-voltage inputs (MONs) are used for Stop-exit and Sleep-
exit (same XSFR). Generally the synchronous wake-up features are equivalent to the Sleep Mode exit. The Stop
Mode terminates by using one of the synchronous wake-up features. The synchronous wake-up features are
separated in Cyclic Sense and wake-up after time-out (Cyclic Wake). Both of these wake-up procedures work
similarly to the Sleep-exit. In Cyclic Sense mode, both the MONx inputs as well as the GPIOs can be evaluated
and a transition will cause a termination of the Stop Mode. The sensing period for MONx inputs and GPIOs is
generated with the same time base (typ. 100 kHz). The sensing period is set in the
external load of the GPIOs, the supply voltage VDDEXT may switch on for the sensing time. Only during this
MON
LP_CLK
SYSTEM_STATE
5V
VDDP
reduced voltage
1.5V
VDDC
Stop
Active
startup
stable
SUPPLY_STATUS
stable
ok
startup