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AS5215

Datasheet - Application In form atio n

8.9 OTP Programming and Verification

Figure 18. OTP Programming Connection

For programming of the OTP, an additional voltage has to be applied to the pin PROG. It has to be buffered by a fast 100nF capacitor (ceramic)

and a 10µF capacitor. The information to be programmed is set by command 25. The OTP bits 16 until 45 are used for AMS factory trimming and

cannot be overwritten.

After programming, the programmed OTP bits must be verified in two ways:

By Digital Verification: This is simply done by sending a READ OTP command (#15). The structure of this register is the same as for the OTP

PROG or OTP WRITE commands.

Symbol

Parameter

Min

Max

Unit

Note

Supply Voltage

5

5.5

V

GND

Ground level

0

0

V

V_zapp

Programming Voltage

8

8.5

V

At pin PROG

T_zapp

Temperature

0

85

ºC

f_clk

CLK Frequency

100

kHz

At pin DCLK

VDD

VSS

Micro

Controller

AS5130

100n

VSS

+5V

VDD

CS

VDD

DCLK

DIO

PROG

VSS

+

10µF 100n

8.0 - 8.5V

VDD

PROG

GND

C1

C2

100nF

10µF

PROM Cell

maximum

parasitic cable

inductance

L<50nH

I/O

Output

Output