Programming State Machine
Power-up
Initial
Register Select
Bitfield Select
1
Sens/
Coarse
D
(Q)
2
Fine
D(Q)
[Parameter Register Key sequence]
[Bitfield Code sequence]
[Optional: test output]
No
VPM
VPM
VPM
VPM
VPM
VPM
VPM
VPM
VPM
VPM
VPM
1
(Bitfield 0)
2
(Bitfield 1)
3
(Bitfields 0
and 1)
4
Null
3
f
PWM
/
Coarse
f
PWM
5
Calibration
Test Mode
/LOCK
Mode Select
1
Blow
/Lock
2
Try
[Mode Register Key sequence]
[Try Mode]
2
n
1
n= bits in
register
Fuse
Blowing
User Power-down
Required
VPM
VPM
VPM
VPM
2 VPH
Blow or Lock
Mode?
Yes
VPH
VPH
VPH
VPH
VPH
VPH
VPM = V
P(LOW)
?V
P(MID)
? V
P(LOW)
VPH = V
P(LOW)
?V
P(HIGH)
?V
P(LOW)
Initial State A known state to which the programming logic is
reset after system power-up. All the bitfield locations that have
intact fuses are reset to logic 0. VPM pulses have no effect. To enter
the Mode Select state, apply a single VPH pulse to the VCC pin.
Mode Select State This state allows the selection of the Mode
register. To select a Mode register, increment through the keys by
applying VPM pulses to the VCC pin. Register keys select among
the following programing modes:
" 1 pulse Blow and Lock
" 2 pulses Try
To enter the Parameter Select state, apply 2 VPH pulses to the
VCC pin.
Parameter Select State This state allows the selection of the
Parameter register containing the bitfields to be programmed.
Applying VPM pulses to the VCC pin increments through the
Parameter registers:
" 1 pulse Sensitivity / Coarse D
(Q)
" 2 pulses Fine D
(Q)
" 3 pulses PWM Frequency / Coarse PWM Frequency
" 4 pulses Null
" 5 pulses Calibration Test Mode / Device LOCK
To enter the Bitfield Select state, apply 1 VPH pulse to the VCC pin.
Bitfield Select State This state allows the selection of the indi-
vidual bitfields to be programmed in the selected Parameter regis-
ter (see the Programming Logic table). Applying VPM pulses to
the VCC pin increments the bitfield.
In Try mode, to re-enter the Parameter Selection state, apply 1
VPH pulse on the VCC pin. The previously addressed parameter
retains its value as long as V
CC
is not cycled.
In Blow or Lock mode, to leave the Bitfield Select state requires
either cycling V
CC
or blowing the fuses for the selected code.
Note: Merely addressing the bitfield does not permanently set
the value of the selected programming parameter; fuses must be
blown to do so.
Fuse Blowing State To blow an addressed bitfield, apply a
VPH pulse to the VCC pin. Power to the device should then be
cycled before additional programming is attempted. Note: Each
bit representing a decimal code must be blown individually (see
the Fuse Blowing section).
High Precision 2-Wire Linear Hall Effect Sensor IC
with Pulse Width Modulated Output
A1354
17
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
A1356LKB-T
IC SENSOR HALL EFFECT 3 SIP
A1361LKTTN-T
IC HALL EFFECT SENSOR LN 4-SIP
A1374EKB-T
IC SENSOR HALL EFFECT PREC 3-SIP
A1422LK
IC SENSOR HALL EFFECT AC 4-SIP
A1425LK
IC SENSOR HALL EFFECT AC 4-SIP
A1645LK-I2
IC SENSOR HALL EFFECT AC 4-SIP
A3230LUA-T
IC SW HALL EFFECT CHOPPER 3-SIP
A3241LUA-T
IC SWITCH HALL EFFECT 3-SIP
相关代理商/技术参数
A1354KKTTN-T
功能描述:IC HALL EFFECT SENSOR 2WIRE 4SIP RoHS:是 类别:传感器，转换器 >> 磁性 - 霍尔效应，数字式开关，线性，罗盘 (IC) 系列:- 标准包装:1 系列:- 传感范围:20mT ~ 80mT 类型:旋转 电源电压:4.5 V ~ 5.5 V 电流 - 电源:15mA 电流 - 输出（最大）:- 输出类型:数字式，PWM，8.5 位串行 特点:可编程 工作温度:-40°C ~ 150°C 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商设备封装:20-SSOP 包装:Digi-Reel® 其它名称:AS5132-HSST-500DKR
A1354P1-2
制造商:APEM 功能描述:
A1354P1-6
功能描述:SWITCH HARDWARE RoHS:是 类别:开关 >> 配件 系列:- 标准包装:100 系列:- 其它名称:886.0007886.0007-ND
A1354P2-4
制造商:APEM 功能描述:
A1354P2-5
功能描述:SWITCH HARDWARE RoHS:是 类别:开关 >> 配件 系列:- 标准包装:100 系列:- 其它名称:886.0007886.0007-ND
A1355P1-2
制造商:APEM 功能描述:
A1355P1-3
制造商:APEM 功能描述:
A1355P1-8
制造商:APEM 功能描述: