參數(shù)資料
型號: A1186LUA
廠商: Allegro MicroSystems, Inc.
英文描述: Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
中文描述: 超靈敏雙線現(xiàn)場可編程斬波穩(wěn)定單極霍爾效應(yīng)開關(guān)
文件頁數(shù): 12/14頁
文件大?。?/td> 318K
代理商: A1186LUA
12
A1185-DS, Rev. 1
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall Effect Switches
A1185 and A1186
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 bitfield-level fuses
are blown, the device-level fuse should be blown. To do so, the
lock bit (bitfield address 32) should be encoded as 1 and have
its fuse blown. This is done in the same manner as permanently
setting the other bitfields, as shown in figure 9.
Enabling Addressing Mode
.
The first segment of code is a
keying sequence used to enable the bitfield addressing mode. As
shown in figure 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.
Figure 7. Addressing mode enable pulse sequence
V
PH
V+
t
V
PM
V
PL
0
Address Selection
.
After addressing mode is enabled, the
target bitfield address, is indicated by a series of V
PM
pulses, as
shown in figure 8.
相關(guān)PDF資料
PDF描述
A1186LUA-T Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
A1186LLHLT Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
A1185 Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
A1185EUA-T Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
A1185LLHLT-T Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
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