TLE 6209 R

Data Sheet, Version 3.0

11

2001-10-15

thresholds. As soon as a threshold is reached, the according status bits are set in the

SPI diagnosis word (c.f. Table 5). If the overtemperature shutdown threshold is reached,

the output stages are turned off. The temperature monitoring messages and the over

temperature shutdown are latched and can be reset by the status register reset bit 7 of

the SPI control word or a POR.

2.5.6

Power Supply Fail

The power supply Voltage is monitored for over- and under voltage lockout:

• Under Voltage Lockout

If the supply voltage

V

transistors are switched off and the power supply fail bit (bit 7 of the SPI diagnosis

word) is set. If

V

stages are restarted. The error bit, however, is latched and has to be reset by the

status register reset bit 7 of the SPI control word.

• Over Voltage Lockout

If the supply voltage

V

are switched off and the power supply fail bit (bit 7 of the SPI diagnosis word) is set.

If

V

restarted. The error bit, however, is latched and has to be reset by the status register

reset bit 7 of the SPI control word.

The OVLO is only active if control bit 6 is H. If the bit is low, the OVLO is deactivated.

2.5.7

Error Flag

Bit 0 of the SPI diagnosis word is an OR of the status bits 1 to 7. It can be read out without

full SPI communication as described in Figure 8.