TLE8262E datasheet(61/93 Pages) INFINEON

61 / 93 page

Data Sheet

Rev. 1.0, 2009-03-31

TLE8262E

Interrupt Function

12.1.1

Interrupt for switching on Vcc2 and Vcc3

The Interrupt for Vcc2 and Vcc3 are generated when the SPI command for switching on the voltage regulator is

executed. The interrupt bit is set to “1“ and can be cleared with a Read Only command after the under voltage

threshold is reached. If the Read Only is done before the reset threshold is reached, the interrupt bit can not be

cleared as the undervoltage condition is still present. In this case a second interrupt can be issued for releasing

the undervoltage condition.

In case of a short to GND on Vcc2 or Vcc3 the interrupt for switching on the voltage regulator is issued, but the

µC can not clear the interrupt bit as the voltage regulator does not reach the undervoltage threshold.

12.1.2

Example of Interrupt Events and Read-out

The examples show single interrupt events. SPI read is done with “Read Only”. The shown interrupts are not

masked. Watchdog trigger is not shown in the examples.

The interrupt UV_Vcc2 that is generated by switching on

CC2 is shown in Figure 27. The interrupt is sensitive on

rising event only.

Undervoltage at

CC2 (except during switch off

1))

Rising and falling

_VCC2

Event /

State

Undervoltage at

CC3(except during switch off

1))

Rising and falling

_VCC3

Over current at

CC3 (except during inhibition)

Rising

CC3 > ICC3MAX

Voltage at

CC2 (during switch on

1))

Rising

_VCC2

Event

Voltage at

CC3 (during switch on

1))

Rising

_VCC3

SBC Failure

SPI data corrupted

Rising

SPI Fail

Event

Reset (SBC SW Development only)

Rising

Reset

Wrong watchdog setting

Rising

Wrong WD set

Wake

Wake at CAN

Rising

WK CAN

Event

Wake at LIN

Rising

WK LINx

Wake at WK

Rising

WK WK pin 1..0

Cyclic WK

Rising

Cyclic WK

1) When VCC2/3 is switched off no interrupt is generated due to the undervoltage at VCC2/3. When switching on VCC2/3 an

interrupt is generated when the command is sent to the SBC via SPI.

Table 11

Interrupt sources

INT Activation

SPI bit

State

TLE8262E Datenblatt(PDF) 61 Page - Infineon Technologies AG

TLE8262E Datenblatt(HTML) 61 Page - Infineon Technologies AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93

Datenblatt Download

Link URL