www.austriamicrosystems.com/AS5115

Revision 1.11

11 - 20

AS5115

Datasheet - Detailed Descr i pti on

7.6 Waveform – Digital Interface at Analog Readback of the Zener Diodes

To be sure that all Zener-Diodes are correctly burned, an analog readback mechanism is defined. Perform the ‘READ OTP ANA’ sequence

according to the command table and measure the value of the diode at the end of each phase.

Figure 7. Digital Interface at Analog Readback of Zener Diodes

7.7 One Time Programming Content

The AS5115 die has an integrated 46-bit OTP ROM (Easyzapp) for trimming and configuration purposes. The PROM can be programmed via.

the serial interface. For irreversible programming, an external programming voltage at PROG pin is needed. For security reasons, the factory

trim bits can be locked by a lock bit.

As shown in the table below, the OTP holds 46 bits. Bit number 44 and 45 are used for OTP testing purposes and ESD protection of the

remaining cells.

Remark: OTP assignment will be defined/updated.

Table 12. Serial Bit Sequence (16-bit read / write)

Write Command

Read / Write Data

C4

C3

C2

C1

C0

D15 D14

D13 D12

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

Name

Bit Count

OTP Start

OTP End

Access

Comments

Hall_b

6

0

5

user

Sets overall sensitivity

dc_offset

1

6

6

user

Output DC offset setting

gain

2

7

8

user

Output Buffer Gain setting

Lock

1

13

13

austriamicrosystems

Set in production test

invert_channel

1

11

11

user

Inverts SIN and COS channel before the PGA for

inverted output function

cm_sin

1

10

10

user

Common mode voltage output enabled at SINN /

CM pin

cm_cos

1

9

9

user

Common mode voltage output enabled at COSN /

CM pin

CMD0

CMD1

CMD2

CMD3

CMD4

EXT D45

EXT D44

EXT D1

EXT D0

CMD_PHASE

DATA_PHASE_EXTENDED

perform analog measurements at PROG

OTP D45

OTP D44

OTP D43

OTP D0

DCLK

CS

DIO

PROG