MLX90251 Datasheet, PDF (14/22 Pages) Melexis Microelectronic Systems – Programmable Linear Hall Effect Sensor

MLX90251
Programmable Linear Hall Effect Sensor
10.12 Memory Lock (MEMLOCK)
The Memory Lock feature prevents the device from entering programming mode and from any changes to the
EEPROM. The entire EEPROM is locked by setting the MEMLOCK parameter to 1. This should be the last
parameter set in the application.
10.13 IC traceability
A unique ID number is programmed into the EEPROM of every IC. The ID number gives Melexis additional
traceability to better service its customers. The ID number is composed of the lot number, wafer number, and
wafer coordinates (X and Y). Memory is also available for the customer to add a serial number of the product
or any other data.
11 Performance Graphs
Typical I_DD VS V_DD
60
Typical I_DD VS V_DDNOM
8.5
40
Over Voltage
V _DDNOM
Under Voltage
20
0
-20
-40
-60
150°C
-40°C
25°C
-80
-10
0
10
20
30
V_DD (Volts)
Figure 11-1…11-2 I_DD Versus V_DD
8
7.5
7
6.5
6
5.5
5
4.5
4
150°C
-40_°C
25_°C
4.5
5
5.5
6
V_DD (Volts)
3901090251
Rev 009
Page 14 of 22
Data Sheet
Nov/06