AS5030-ATSU austriamicrosystems, AS5030-ATSU Datasheet - Page 25

• Manufacturer Part Number: AS5030-ATSU
• Description: IC ENCODER ROTARY 8-BIT 16-TSSOP
• Manufacturer: austriamicrosystems
• Type: Linear, Rotary Encoder - Programmabler

Specifications of AS5030-ATSU

• Sensing Range: 23.6mT ~ 44.5mT
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 14mA
• Current - Output (max): 4mA
• Output Type: Digital, PWM
• Features: Programmable
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AS5030
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
8.2.4 18-bit OTP Write Commands
During the 18bit OTP read/write transfer, each bit needs 4 clock pulses to be validated.
WRITE OTP: non-permanent (“soft write”) modification of the OTP register. To set the reserved factory settings area properly, a preceding READ
OTP command must be made to receive the correct setting for bits D17:D10. The WRITE OTP command must then set these bits in exactly the
same way. Improper setting of the factory settings by a WRITE OTP command may cause malfunction of the chip. The OTP register, including
the factory settings can be restored to default by a power-up cycle.
For non-permanent writing, a programming voltage at pin PROG (#2) is not required.
PROG OTP: permanent modification of the OTP register. An unprogrammed OTP bit contains a ‘0, programmed bits are 1’s. It is possible to
program the OTP in several sequences. However, only a 0 can be programmed to 1. Once programmed, an OTP bit cannot be set back to 0. For
subsequent programming, bits that are already programmed should be set to 0 to avoid double programming.
During permanent programming, the factory settings D17:D10 should always be set to zero to avoid modification of the factory settings.
Modifying the factory settings may cause irreversible malfunction of the chip.
For permanent programming, a static programming voltage of 8.0-8.5V must be applied at pin PROG (#2)
sens sets the sensitivity setting of the Hall elements:
00: gain factor = 1.65 (low sensitivity)
01: gain factor = 1.75
10: gain factor = 1.86
11: gain factor = 2.00 (high sensitivity)
zero position sets the user programmable zero position; the actual angle of the magnet which is displayed as 000
Figure 21. Timing Diagram in OTP 18-bit Read/Write Mode
www.austriamicrosystems.com/AS5030
PROG OTP 11001
Command
WRITE
DCLK
OTP
DIO
DIO
DIO
CS
t2
11111
t3
Bin
t1
HI
Hex D17
1F
19
t4
Command phase
HI
CMD2
obtained from READ OTP command
D16
reserved for factory settings,
D15 D14 D13 D12 D11 D10 D9 D8
copy factory settings
t6
t5
CMD0
00000000
t 11
D 15
Revision 2.1
D 15
t 12
t8
Data phase extended
sens
sens
1:0
1:0
D 14
t7
D7
D6
D0
D5
zero position
zero position
D4
D0
7:0
7:0
D3
D2
t 10
t 13
t9
D1
WRITE
READ
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D0