A1373 and
A1374
High Precision, Output Pin Programmable
Linear Hall Effect Sensors
Programming State Machine
POWER UP
INITIAL STATE
VPH
VPH
MODE SELECT
VPL
VPL
TRY VPL
1
BLOW VPL
2
LOCK
3
VPH
VPH
VPH
REGISTER SELECT
QVO
Coarse
VPL
0
QVO
Fine
VPL
SENS.
Coarse
VPL
1
2
SENS.
Fine
VPL
3
VPL
SENS.
TC
VPL
CLAMP VPL
POLAR
4
5
6
VPH
VPH
VPH
VPH
VPH
VPH
VPH
BITFIELD SELECT [Write Mode]
[Optional:
Measure]
[Optional:
Measure]
[Optional:
Measure]
0
VPL
1
VPL
2
VPL
VPL
2^N -1
VPH
VPH
VPH
VPH
No
BLOW
Yes
OR LOCK
MODE?
FUSE BLOWING
User generated transition
Internally generated transition
Allegro MicroSystems, Inc.
17
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com