MLX90711 Datasheet, PDF (4/12 Pages) List of Unclassifed Manufacturers – Position/movement Sensing Auto-Shutoff

MLX90711
Position/movement Sensing Auto-Shutoff
Movement Auto Shut-Off time
When used as a movement Auto Shut-Off module,
several timing options are available. All timings are
derived from the on chip oscillator and have thus the
same tolerance.
If the module is left immobile for a time longer than
TASO the auto shut-off function becomes active.
There is also an additional time period TADI. This
time is valid only in the vertical state and determines
the time between shut-off and the start of the led
blinking.
version
V1
V2
V3
V4
V5
V6
V7
V8
Movement sensor options
TASO
TADI
30 sec
0
30 sec
4 min
4 min
0
1 min
0
10 min
0
2 min
0
8 min
0
30 sec
8 min
Position Auto Shut-Off
When used as a position Auto Shut-Off module,
several timing options are available. All timings are
derived from the on chip oscillator and have thus the
same tolerance.
Three different time delays can be defined: the
horizontal shut-off (TH), the vertical shut-off (TV) and
the down shut-off (TD).
involves the following phases :
PHASE 0: The duration is a time period
“TS”, which incorporates the Power On Reset time
period. This time ‘TS” is typically 0.2 sec.
PHASE 1: The duration is 0.5 second or 3
seconds. This can be defined by the mask option
SPH1. During this phase the iron heats. The ASO
function is not active. The LED is off. The relay is
NC and the control voltage is not applied to its coil
during this phase.
PHASE 2: The duration is 0.75 second. The
ASO function is active. The iron is not heating. The
control voltage is applied to the coil of the relay
during this phase. The LED indicates that the ASO
function is active. Some additional information is
sent out by the led driver during this phase. This
information involves three frequency codes.
- the first code is the highest digital clock
(20.48kHz). The duration is 250ms.
- the second code is the information of the
position sensor. The frequency depends on the
position of the module:
- the third code is the information of the
metal mask where the customer specific options are
defined. It is coded using one of five frequencies
(20kHz, 10kHz, 5kHz, 2.5kHz, 1.25kHz).
position
UP
Between UP and HOR
HOR
Between HOR and DO
DO
LED frequency (KHz)
1.28
2.56
5.12
10.24
20.48
version
V1
V2
V3
V4
position sensor options
TD
TH
TV
30”
30”
4’
30”
30”
infinity
30”
5”
8’
30”
30”
8’
Start up sequence
When connecting the asic to the AC line the asic first
passes through a startup sequence. The duration of
this sequence is 1.25 or 3.75 seconds depending on
the duration of phase 1. After the start up test the
normal function of the chip begins. This sequence
EMC
Thanks to a special algorithm the sensor is made
very insensitive to noise and AC line coupling.
ESD Precautions
Electronic semiconductor products are sensitive to
Electro Static Discharge (ESD).
Always observe Electro Static Discharge control
procedures whenever handling semiconductor
products.
MLX90711 Position/movement Sensing Auto-Shutoff Page 4
Rev 1.0 15/Sep/00