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AS5215
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
8.9 OTP Programming and Verification
Figure 18. OTP Programming Connection
+5V
V DD
V DD
Output
CS
V DD
Micro
Controller
V SS
Output
I/O
8.0 - 8.5V
+
10μF 100n
DCLK
DIO
PROG
AS5130
V SS
100n
V SS
maximum
parasitic cable
inductance
V SUPPLY
V zapp
L<50nH
V prog
PROG
V DD
C1
100nF
C2
10μF
GND
PROM Cell
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.
Symbol
V DD
GND
V_zapp
T_zapp
f_clk
Parameter
Supply Voltage
Ground level
Programming Voltage
Temperature
CLK Frequency
Min
5
0
8
0
Max
5.5
0
8.5
85
100
Unit
V
V
V
oC
kHz
Note
At pin PROG
At pin DCLK
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.
www.austriamicrosystems.com/AS5215
Revision 1.11
21 - 26
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