TLE8262E Datasheet, PDF (22/93 Pages) Infineon Technologies AG – Universal System Basis Chip HERMES Rev. 1.0

TLE8262E
Internal Voltage Regulator
Table 3 Internal Voltage Regulators States
SBC Mode
Vcc1µC
INIT Mode
ON
Normal Mode
ON
Sleep Mode
OFF
Restart Mode
ON
Software Flash Mode
ON
Stop Mode
ON
Fail-Safe Mode
OFF
OFF
ON
OFF
unchanged
ON
ON
OFF
Vcc2
OFF
OFF
OFF
6.4
Application information
6.4.1 Timing Diagram
Figure 5 shows the ramp up and down of the V_S, and the dependency of V_cc1µC. At the first ramp up from SBC Init
Mode, the reset threshold V_RT and time t_RO are set to the default value. See Chapter 11.1
Vs
VUV ON
Vcc1µC
VUV OFF
t
V_{R Tx ,r}
GND
RO
VR Tx ,f
t
SBC OFF
SBC Init
Any mode
SBC OFF
t
Figure 5 Ramp up / Down of Main Voltage Regulator
An undervoltage time-out on V_cc1µC is implemented. Refer to Chapter 13 for more information on this function.
6.4.2
Under voltage detection at V_cc2
The V_cc2 voltage regulator integrates an under voltage detection. When V_cc2 voltage goes below V_{UV_VCC2}, the
failure is indicated by an interrupt and the failure is reported into the diagnosis frame of the SPI.
Data Sheet
22
Rev. 1.0, 2009-03-31