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Revision 1.12

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AS5311

Datasheet - P in A s s ig n me nt s

Table 1. Pin Descriptions

Pin Number

Pin Name

Pin Type

Description

1NC

-

Must be left unconnected

2

MagINCn

Digital output open

drain

Indicates “Red/Yellow/Green Range” depending on the distance between device

and magnet

3

MagDECn

Indicates “Red/Yellow/Green Range” depending on the distance between device

and magnet

4A

Digital output

Incremental output A

5B

Incremental output B

6NC

-

Must be left unconnected

7

Index

Digital output

Incremental output Index

8

VSS

Supply pin

Negative Supply Voltage (GND)

9

Prog

Digital input pull-down OTP Programming Input for factory programming. Connect to VSS.

10

NC

-

Must be left unconnected

11

NC

-

Must be left unconnected

12

DO

Digital output /tri-state Data Output of Synchronous Serial Interface

13

CLK

Digital input,

Schmitt-Trigger input

Clock Input of Synchronous Serial Interface; Schmitt-Trigger input

14

CSn

Digital input pull-up,

Schmitt-Trigger input

Chip Select, active low; Schmitt-Trigger input, internal pull-up resistor (~50kW).

Must be low to enable incremental outputs

15

PWM

Digital output

Pulse Width Modulation of approx. 244Hz; 1µs/step

16

NC

-

Must be left unconnected

17

NC

-

Must be left unconnected

18

VDD3V3

Supply pin

3V-Regulator output; internally regulated from VDD5V.

Connect to VDD5V for 3V supply voltage. Do not load externally.

19

VDD5V

Positive Supply Voltage, 3.0 to 5.5 V

20

NC

-

Must be left unconnected