TLE9261-3QX Datasheet, PDF (111/186 Pages) Infineon Technologies AG – Dedicated Data Sheets are available for the different product variants

TLE9261-3QX
Supervision Functions
14.3
VS Power On Reset
At power up of the device, the VS Power on Reset is detected when VS > V_POR,r and the SPI bit POR is set to
indicate that all SPI registers are set to POR default settings. VCC1 is starting up and the reset output will be kept
LOW and will only be released once VCC1 has crossed V_RT1,r and after t_RD1 has elapsed.
In case VS < V_POR,f, an device internal reset will be generated and the SBC is switched OFF and will restart in INIT
mode at the next VS rising. This is shown in Figure 51.
VS
VPOR ,r
VCC1
VPOR ,f
t
V_{R T1 ,r}
RO
The reset threshold can be
configured via SPI in SBC
Normal Mode , default is VRT1
SBC Mode
tRD1
SBC OFF
SBC INIT MODE
Any SBC MODE
SPI
Command
Figure 51 Ramp up / down example of Supply Voltage
V_{R Tx,f}
t
SBC Restart Mode is
entered whenever the
Reset is triggered
t
Re-
start
SBC OFF
t
Data Sheet
111
Rev. 1.1, 2014-09-26