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A1360 Datasheet(PDF) 17 Page - Allegro MicroSystems

Part No. A1360
Description  Low-Noise Programmable Linear Hall Effect Sensor ICs with
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Maker  ALLEGRO [Allegro MicroSystems]
Homepage  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A1360 Datasheet(HTML) 17 Page - Allegro MicroSystems

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A1360, A1361,
and A1362
(Decimal Equivalent)
Code 5
Bit Field Selection
Address Code Format
Code in Binary
Fuse Blowing
Target Bits
Fuse Blowing
Address Code Format
(Binary)
1 0 1
Bit 2
Bit 0
Code 4
Code 1
(Decimal Equivalents)
Figure 3. Example of code 5 broken into its binary components,
equaling code 4 and code 1.
Note: After blowing, the programming is not reversible, even
after cycling the supply power. Although a register bit field fuse
cannot be reset after it is blown, additional bits within the same
register can be blown at any time until the device is locked. For
example, if bit 1 (binary 10) has been blown, it is still possible to
blow bit 0. The end result would be binary 11 (decimal code 3).
Locking the Device
After the desired code for each parameter is programmed, the
device can be locked to prevent further programming of any
parameters. See the Lock Mode section for lock pulse sequence.
Additional Guidelines
The additional guidelines in this section should be followed to
ensure the proper behavior of these devices:
• A 0.1 μF blowing capacitor, CBLOW, must be mounted between
the VOUT pin and the GND pin during programming, to ensure
enough current is available to blow fuses.
• The CBLOW blowing capacitor must be replaced in the final
application with a suitable CL. (The maximum load capacitance
is 10 nF for proper operation.) The power supply used for
programming must be capable of delivering at least 26 V and
300 mA. Be careful to observe the tLOW delay time before
powering down the device after blowing each bit.
• The following programming order is recommended:
1. Coarse VOUT(Q)
2. Sens
3. VOUT(Q)
4. LOCK (only after all other parameters have been
programmed and validated, because this prevents any further
programming of the device)
Low-Noise Programmable Linear Hall Effect Sensor ICs with
Adjustable Bandwidth (50 kHz Maximum) and Analog Output
17
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com


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