TLE4997 Datasheet, PDF (31/36 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor for Industrial Use

TLE4997I
Calibration
Table 18 Programming Characteristics
Parameter
Symbol Limit Values Unit Notes
min. max.
Number of EEPROM N_PRG -
8
Cycles Programming allowed
programming cycles
1)
only at start of lifetime
Ambient temperature at T_PRG 10
30
°C
programming
Programming time
t_PRG
100
-
ms
For complete memory ²⁾
Calibration memory _-
135
Bit
All active EEPROM bits
Error correction
-
25
Bit
All parity EEPROM bits
1) _{1 cycle is the simultaneous change of ≥ 1 bit. For experimental and evaluation purposes, the device may be}
programmed more often, but then data retention is no longer guaranteed.
2) _{Depends on the clock frequency at VDD.}
9.2
Programming Interface
The supply pin and the output pin are used as two-wire interface to transmit the
EEPROM data to and from the sensor.
This allows
• communication with high data reliability
• bus-type connection of several sensors
In many applications, two sensors are used to measure the same parameter. This
redundancy allows the operation to continue in an emergency mode. If both sensors use
the same power supply lines, they can be programmed together in parallel.
The data transfer protocol and programming is described in a separate document. A
laboratory evaluation programmer for programming of the evaluation samples and
qualified samples is available on request.
Data Sheet
31
V 1.0, 2007-06