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AS5030

Datasheet - Application In formatio n

8.7.1 Low Power Mode and Ultra-low Power Mode

Figure 25. Low Power Mode and Ultra-low Power Mode Connection

The AS5030 can be put in Low Power Mode or Ultra-low Power Mode by simple serial commands, using the regular connection for 2-wire or 3-

wire serial data transmission (see Figure 4 and Figure 8).

Note:

After returning from Low Power mode or Ultra-low Power mode to normal operation (PSM = 0), if the Hysteresis is enabled (Hys=0), a

The two following cases describe the typical loop programmed in the software:

1. Wait for CPU interrupt or delay for next angle read (typ. <3ms in LP mode, typ>3ms in ULP mode)

2. Wake up (PSM = 0)

3. Set Reset (rst = 1)

4. Clear Reset (rst = 0)

5. Wait 1.5ms (Low Power Mode)

6. Check if Lock = 1 then read angle

7. Enable Low Power Mode or Ultra-low Power Mode (PSM=1)

8. Return to 1

ULP / LPn

PSM

Mode

0

0

Normal operation

0

1

Low Power Mode

1

0

Normal operation

1

1

Ultra-low Power Mode

AS5030

Micro

Controller

100n

CS

CLK

DIO

+5V

VDD

VSS

VSS

VSS

VDD

VDD

on/off

S

N

C1 C2

R1: optional;

see text

C1:

optional;

see text