Table 30

(continued) Sensor SPC trigger parameters

Parameter

Symbol

Values

Unit

Note / Test

condition

Min.

Typ.

Max.

Master nibble

low time

tmlow

8

-

15

UT

addr. 0

Master nibble

low time

tmlow

16

-

28

UT

addr. 1

Master nibble

low time

tmlow

29

-

49

UT

addr. 2

Master nibble

low time

tmlow

50

-

82

UT

addr. 3

Table 31

SPC master pulse parameters

Parameter

Symbol

Values

Unit

Note or condition

Min.

Typ.

Max.

Threshold,

falling edge

Vth_falling

-

35

-

% of

VDD

 

Threshold,

rising edge

Vth_rising

-

50

-

% of

VDD

not subject to production test - verified by

design/characterization

Total trigger

time

tmtr

-

90

-

UT

for constant trigger length

Total trigger

time

tmtr

-

tmlow +

12

-

UT

trigger time in the sensor is fixed to the number

of units specified in the “typ.” column, but the

effective trigger time varies due to the sensor’s

clock variation for variable trigger length

5.2.3.3

SPC Features

SPC Status Nibble

The status nibble, which is sent with each SPC data frame, provides an error indication. In case the sensor detects an

error, the corresponding error bit in the status nibble is set. An error is indicated by the corresponding error bit in the

status nibble as long as it persists, but at least once. 

Table 32

Structure of SPC status nibble

 

Bits

Description

[0] LSB

Short Serial Message bit (data) or bus mode ID LSB

[1]

Short Serial Message bit (start indication) or bus mode ID

MSB

[2]

Warning bit (e.g. air gap warning or OV/UV indication)

[3] MSB

Error indication or sensor reset

 

TLE49SR

Datasheet

5  Specific module descriptions

Datasheet

27

Rev. 1.1.1

2024-03-13