AS5130ATST AMSCO [austriamicrosystems AG], AS5130ATST Datasheet - Page 25

• Manufacturer Part Number: AS5130ATST
• Description: 8 Bit Programmable Magnetic Rotary Encoder with Motion Detection & Multiturn
• Manufacturer: AMSCO [austriamicrosystems AG]

AS5130
Data Sheet - D e t a i l e d D e s c r i p t i o n
Figure 18. External Circuitry for Polling Mode
The voltage at pin 16 (DV
the polling functionality. This voltage must always be present at DV
The procedure is as follows:
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1. Initial startup: The circuit starts up with invalid trim values, which are read back from the storage registers; the
2. These values are copied to the storage registers if OTP<8> (Wake enable) is set (must be set for polling
3. The values of AGC counter, actual angle, multi turn counter, hysteresis setting, wake threshold and gain set-
4. The actual angle is stored as a reference by sending command STORE REF (command 3 – 00011). without
5. The update of the storage registers is stopped if V
command rst_otp (command 19 – 10011) must be sent to read out valid trim values from the OTP.
mode).
ting are continuously updated in the storage registers.
this reference angle, a WAKE is generated at every startup.
(DV
angle is compared with the stored reference angle; if the difference between both exceeds the threshold, a
WAKE pulse is generated.
DD
) at the next startup (V
DD
) determines whether polling mode is activated or not. Any voltage above 3.6V activates
V
SS
DD
on), the values are read back from the storage registers and the measured
WAKE
DV
V
DD
DD
Revision 1.00
DD
drops below 4.45V and then the information is stored
100n
DD
in order to hold the information in the registers.
t_on
t_off
>1.5K
+5V
t_wakeup
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