TLE5012 datasheet(55/64 Pages) INFINEON

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TLE5012

Specifications

Final Data Sheet

V 1.0, 2010-11

Figure 24

HS hysteresis

3.5.4

Incremental Interface

The Incremental Interface (IIF) uses an up/down counter of a microcontroller for the angle transmission. The

synchronization is done by the parallel active SSC Interface. The angle value read out by the SSC Interface can

be compared to the stored counter value. In case of a non-synchronization, the microcontroller adds the difference

to the actual counter value to synchronize the TLE5012 with the microcontroller. The resolution of the IIF can be

selected within the interface mode4 register (MOD_4) under IFAB_RES.

After startup, the IIF pulses out the actual absolute angle value to notify the microcontroller about the absolute

position.

In register MOD_1 the IIF can be set in A/B mode or Step/Direction mode (IIF_MOD).

A/B Mode

The phase shift between phase A and B indicates a clockwise (A follows B) or a counterclockwise (B follows A)

rotation of the magnet.

Step/Direction Mode

Phase A pulses out the increments and phase B indicates the direction (Figure 25).

Figure 25

Incremental Interface with Step/Direction mode

Ideal Switching Point

αelect

αHShystel

αelect

0°

Step

Direction

Counter Value

Incremental

Interface

(Step/ Dir Mode)

TLE5012 Datasheet(PDF) 55 Page - Infineon Technologies AG