Sensitive Two-Wire Field-Programmable
Chopper-Stabilized Unipolar Hall Effect Switches
A1180, A1181,
A1182, and A1183
11
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
PROGRAMMING PROTOCOL CHARACTERISTICS, over operating temperature range, unless otherwise noted
Characteristic
Symbol
Test Conditions
Min. Typ. Max. Units
Programming Voltage
1
V
PL
Minimum voltage range during programming
4.5 5.0 5.5 V
V
PM
11.5 12.5 13.5 V
V
PH
25.0 26.0 27.0 V
Programming Current
2
I
PP
t
r
= 11 約; 5 V ?26 V; C
BYP
= 0.1 糉
- 190 -
mA
Pulse Width
t
d(0)
OFF time between programming bits
20
-
-
約
t
d(1)
Pulse duration for enable and addressing
sequences
20
-
-
約
t
d(P)
Pulse duration for fuse blowing
100 300 -
約
Pulse Rise Time
t
r
V
PL
to V
PM
;
V
PL
to V
PH
5
-
20 約
Pulse Fall Time
t
f
V
PM
to V
PL
; V
PH
to V
PL
5
- 100 約
1
Programming voltages are measured at the VCC pin.
2
A bypass capacitor with a minimum capacitance of 0.1 糉 must be connected from VCC to the GND pin of the A118x device in order to
provide the current necessary to blow the fuse.
V
PH
V+
t
V
PM
V
PL
0
T
d(1)
T
d(0)
T
d(P)
Figure 4. Pulse amplitudes and durations
Additional information on device programming and program-
ming products is available on www. allegromicro.com. Program-
ming hardware is available for purchase, and programming
software is available free of charge.
Programming Protocol
The operate switchpoint, B
OP
, can be eld-programmed. To do
so, a coded series of voltage pulses through the VCC pin is used
to set bit elds in onboard registers. The effect on the device
output can be monitored, and the registers can be cleared and
set repeatedly until the required B
OP
is achieved. To make the
setting permanent, bit eld-level solid state fuses are blown, and
nally, a device-level fuse is blown, blocking any further cod-
ing. It is not necessary to program the release switchpoint, B
RP
,
because the difference between B
OP
and B
RP
, referred to as the
hysteresis, B
HYS
, is xed.
The range of values between B
OP(min)
and B
OP(max)
is scaled to
31 increments. The actual change in magnetic ux (G) repre-
sented by each increment is indicated by B
RES
(see the Operating
Characteristics table; however, testing is the only method for
verifying the resulting B
OP
). For programming, the 31 incre-
ments are individually identi ed using 5 data bits, which are
physically represented by 5 bit elds in the onboard registers.
By setting these bit elds, the corresponding calibration value is
programmed into the device.
Three voltage levels are used in programming the device: a low
voltage, V
PL
, a minimum required to sustain register settings; a
mid-level voltage, V
PM
, used to increment the address counter
in the device; and a high voltage, V
PH
, used to separate sets of
V
PM
pulses (when short in duration) and to blow fuses (when
long in duration). A fourth voltage level, essentially 0 V, is used
to clear the registers between pulse sequences. The pulse values
are shown in the Programming Protocol Characteristics table and
in gure 4.
Code Programming. Each bit eld must be individually set. To
do so, a pulse sequence must be transmitted for each bit eld that
is being set to 1. If more than one bit eld is being set to 1, all
pulse sequences must be sent, one after the other, without allow-
ing V
CC
to fall to zero (which clears the registers).
The same pulse sequence is used to provisionally set bit elds as
is used to permanently set bit eld-level fuses. The only differ-
ence is that when provisionally setting bit elds, no fuse-blowing
pulse is sent at the end of the pulse sequence.
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
A1184LUA-T
IC SWITCH HALL EFFECT UNI 3-SIP
A1186LUA-T
IC SWITCH HALL EFFECT UNI 3-SIP
A1193LUA-T
IC SW HALL EFFECT CHOPPER 3SIP
A1203LUA-T
IC SW CONTINUOUS TIME BIPO 3-SIP
A1205EUA-T
IC SWITCH HALL EFFECT GP 3-SIP
A1211LUA-T
IC LATCH HALL EFFECT 3-SIP
A1220LUA-T
IC HALL EFFECT LATCH 3V 3-SIP
A1242LUA-I2-T
IC LATCH HALL EFFECT 3-SIP
相关代理商/技术参数
A1181
制造商:Quick 功能描述:BQFP 19 X 19 NOZZLE FOR QUICK957/957D
A118-1
功能描述:SWITCH HARDWARE RoHS:是 类别:开关 >> 配件 - 帽盖 系列:800 标准包装:1 系列:AP 开关类型:按钮 形状:圆形，凸起（圆顶） 颜色:红 发光:发光开口 适用于相关产品:AP 系列 安装类型:卡入式 尺寸:12.35mm 直径 x 6.25mm H 特点:- 配用:AP2N006TZBE-ND - SWITCH PUSH SPST-NO 0.125A 125VAP2N003TZBE-ND - SWITCH PUSH SPST-NO 0.125A 125VAP2N002TZBE-ND - SWITCH PUSH SPST-NO 0.125A 125VAP2N006SZBE-ND - SWITCH PUSH SPST-NO 0.125A 125VAP2N003SZBE-ND - SWITCH PUSH SPST-NO 0.125A 125VAP2N002SZBE-ND - SWITCH PUSH SPST-NO 0.125A 125VAP4N007SWBE-ND - SWITCH PUSH SPST-NO 0.125A 125VAP2N007TZBE-ND - SWITCH PUSH SPST-NO 0.125A 125VAP2N007SZBE-ND - SWITCH PUSH SPST-NO 0.125A 125VAP4N006TZBE-ND - SWITCH PUSH SPST-NO 0.125A 125V更多... 其它名称:*481D03001
A1181ELHLT
制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
A1181ELHLT-T
制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
A1181EUA
制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
A1181EUA-T
制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
A1181LLHLT
制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
A1181LLHLT-T
制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches