參數(shù)資料
型號(hào)： A1180LUA
廠商： Allegro MicroSystems, Inc.
元件分類： 霍爾效應(yīng)傳感器
英文描述： Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
中文描述： 敏感雙線現(xiàn)場(chǎng)可編程斬波穩(wěn)定單極霍爾效應(yīng)開關(guān)
文件頁數(shù)： 14/16頁
文件大小： 356K
代理商： A1180LUA
14
A1180-DS, Rev. 2
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall Effect Switches
A1180/81/82/83
V
PH
V+
t
V
PM
V
PL
0
Address 1
Address 2
Address
n
(
≤
31)
Figure 8. Pulse sequence to select addresses
Falling edge of final B
OP
address digit
V
PH
V+
t
V
PM
V
PL
0
Encode Lock Bit
Enable
Address
Blow
32 pulses
Figure 9. Pulse sequence to encode lock bit
Lock Bit Programming
.
After the desired B
OP
calibration value
is programmed, and all of the corresponding bit
fi
eld-level fuses
are blown, the device-level fuse should be blown. To do so, the
lock bit (bit
fi
eld address 32) should be encoded as 1 and have
its fuse blown. This is done in the same manner as permanently
setting the other bit
fi
elds, as shown in
fi
gure 9.
Address Selection
.
After addressing mode is enabled, the
target bit
fi
eld address, is indicated by a series of V
PM
pulses, as
shown in
fi
gure 8.
Figure 7. Addressing mode enable pulse sequence
V
PH
V+
t
V
PM
V
PL
0
Enabling Addressing Mode
.
The
fi
rst segment of code is a
keying sequence used to enable the bit
fi
eld addressing mode. As
shown in
fi
gure 7, this segment consists of one short V
PH
pulse,
one V
PM
pulse, and one short V
PH
pulse, with no supply inter-
ruptions. This sequence is designed to prevent the device from
being programmed accidentally, such as by noise on the supply
line.
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A1181ELHLT 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
A1181ELHLT-T 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
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