AS5040-ASST View Datasheet(PDF) - austriamicrosystems AG

Part Name

Description

Manufacturer

AS5040-ASST

10-Bit 360º Programmable Magnetic Rotary Encoder

austriamicrosystems AG 

AS5040 − Incremental Outputs

Incremental Power-Up Lock Option

After power-up, the incremental outputs can optionally be

locked or unlocked, depending on the status of the CSn pin:

CSn = low at power-up:

CSn has an internal pull-up resistor and must be externally

pulled low (Rext ≤ 5kΩ). If Csn is low at power-up, the

incremental outputs (A, B, Index) will be high until the

internal offset compensation is finished.

This unique state (A=B=Index = high) may be used as an

indicator for the external controller to shorten the waiting

time at power-up. Instead of waiting for the specified

maximum power up-time (0), the controller can start

requesting data from the AS5040 as soon as the state

(A=B=Index = high) is cleared.

CSn = high or open at power-up:

In this mode, the incremental outputs (A, B, Index) will

remain at logic high state, until CSn goes low or a low pulse

is applied at CSn. This mode allows intentional disabling

of the incremental outputs until for example the system

microcontroller is ready to receive data.

Page 24

Document Feedback

ams Datasheet

[v2-12] 2017-Jun-20

Share Link: