A3150JUA Allegro MicroSystems, Inc., A3150JUA Datasheet - Page 6

• Manufacturer Part Number: A3150JUA
• Description: Programmable, Chopper- Stabilized, Hall-effect Switch
• Manufacturer: Allegro MicroSystems, Inc.

The A3150JLT and A3150JUA operate points are pro-
grammed by serially addressing the device through the
supply terminal (pin1). After the correct operate point is
determined, the device programming bits are selected and
then a “lock” set to prevent any further (accidental)
programming.
Program Enable. To program the device, a sequence of
pulses is used to activate/enable the addressing mode as
shown in figure 1. This sequence of a V
seven V
tions, is designed to prevent the device from being pro-
grammed accidentally (for example, as a result of noise on
the supply line).
PROGRAMMING PROTOCOL over operating temperature range.
Characteristic
Programming Voltage
Programming Current
Pulse Width
Pulse Rise Time
Pulse Fall Time
NOTE: Typical data is at T
3150
PROGRAMMABLE, CHOPPER-
STABILIZED, PRECISION,
HALL-EFFECT SWITCH
PH
pulses, and a V
A
PP
= +25 C and is for design information only.
pulse with no supply interrup-
Symbol
V
V
V
t
t
I
t
d(0)
d(1)
PP
dP
t
t
PH
PL
PP
r
f
PP
PROGRAMMING PROTOCOL
pulse, at least
Description
Minimum voltage during programming
Max. supply current during programming
OFF time between bits
Enable, address, program, or lock bit ON time
Program pulse ON time
V
V
PL
PH
to V
or V
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
PH
PP
or V
to V
PP
PL
V
V
V
PH
PP
PL
0
Figure 1 — Program enable
t
d(1)
(AT LEAST 7 PULSES)
PROGRAM ENABLE
Min.
100
4.5
9.0
5.0
20
20
20
11
–
t
d(1)
Typ.
250
300
5.0
10
23
–
–
–
–
Limits
Max.
5.5
11
25
–
–
–
–
–
–
Dwg. WH-013
t
d(0)
Units
mA
V
V
V
s
s
s
s
s