TLE8262E datasheet(22/93 Pages) INFINEON

22 / 93 page

Data Sheet

Rev. 1.0, 2009-03-31

TLE8262E

Internal Voltage Regulator

6.4

Application information

6.4.1

Timing Diagram

Figure 5 shows the ramp up and down of the VS, and the dependency of Vcc1µC. At the first ramp up from SBC Init

Mode, the reset threshold VRT and time tRO are set to the default value. See Chapter 11.1

Figure 5

Ramp up / Down of Main Voltage Regulator

An undervoltage time-out on

cc1µC is implemented. Refer to Chapter 13 for more information on this function.

6.4.2

Under voltage detection at Vcc2

The

cc2 voltage regulator integrates an under voltage detection. When Vcc2 voltage goes below VUV_VCC2, the

failure is indicated by an interrupt and the failure is reported into the diagnosis frame of the SPI.

Table 3

Internal Voltage Regulators States

SBC Mode

Vcc1µC

Vcc2

INIT Mode

OFF

Normal Mode

OFF

Sleep Mode

OFF

Restart Mode

unchanged

Software Flash Mode

OFF

Stop Mode

OFF

Fail-Safe Mode

OFF

Vcc1µC

VUV OFF

GND

VUV ON

VRTx,r

VRTx,f

SBC OFF

SBC Init

Any mode

SBC OFF

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