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AS5130

Data Sheet - D e ta i l e d D e s c r i p t i o n

Figure 18. External Circuitry for Polling Mode

The procedure is as follows:

1. Initial startup: The circuit starts up with invalid trim values, which are read back from the storage registers; the

command rst_otp (command 19 – 10011) must be sent to read out valid trim values from the OTP.

2. These values are copied to the storage registers if OTP<8> (Wake enable) is set (must be set for polling

mode).

3. The values of AGC counter, actual angle, multi turn counter, hysteresis setting, wake threshold and gain set-

ting are continuously updated in the storage registers.

4. The actual angle is stored as a reference by sending command STORE REF (command 3 – 00011). without

this reference angle, a WAKE is generated at every startup.

angle is compared with the stored reference angle; if the difference between both exceeds the threshold, a

WAKE pulse is generated.

WAKE

t_on

t_off

t_wakeup

100n

+5V

>1.5K