KMA200 T/R NXP Semiconductors, KMA200 T/R Datasheet - Page 5

• Manufacturer Part Number: KMA200 T/R
• Description: Power & Control Sensor ICs SNSR MAGNETIC TAPE-7
• Manufacturer: NXP Semiconductors

Specifications of KMA200 T/R

• Package / Case: SOT-637
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Supply Current: 12 mA
• Maximum Operating Temperature: + 160 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: Through Hole
• Product: Programmable Angle Sensor
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: KMA200,115

NXP Semiconductors
6. Diagnostic features
KMA200_7
Product data sheet
The KMA200 includes diagnostic features to ensure the validity of its output signals. The
diagnostic features can be configured with the control information words (ctrl) written to
the user-programmable EEPROM.
In the analog output modes a diagnostic error condition is signaled to the user by setting
the outputs into the high-impedance state. The outputs are forced to lie in the upper or
lower diagnostic range by external pull-up or pull-down resistors.
With no external pull-up/pull-down resistors the output signal will be internally pulled up to
upper diagnosis range.
If digital output is selected, an error condition can also be signaled by setting the error flag
in the digital output word. The least significant bits show the error code. The
shows the behavior in detail:
Once a diagnostic error condition is reached, the KMA200 continues to work normally
after a new external power-on reset or by itself, as described in the table below. It is
possible to configure the KMA200 the way that the error condition has to be fulfilled more
than once. The number of error conditions that is necessary can also be programmed with
bits in the control information words.
Table 4.
[1]
Temperature supervision
The chip temperature measured within the KMA200 can be used to detect
over-temperature conditions. Two temperature levels are defined: the temperature
warning level and the temperature shutdown level.
The user can evaluate the temperature warning if digital output mode is selected. When
the device temperature exceeds the warning level, the error flag in the digital output word
is set. The other data bits still show the angle information. In the analog output modes, the
device temperature warning is not available. If the temperature exceeds the
over-temperature shutdown level, the KMA200 switches off.
Error appearance
Oscillator fail detection
Cyclic Redundancy Check (CRC)
Watchdog
Input stage (including magnet lost)
Output stage
Over-temperature warning
Over-temperature shutdown
Overvoltage
Reverse polarity
Reactivation for angular measurement with valid angle information (normal operation mode) only by new
external power-on reset
Summary KMA200 behavior at diagnosis conditions in normal operation mode
Rev. 07 — 18 July 2008
[1]
[1]
[1]
[1]
[1]
Analog output
high-impedance state
high-impedance state
high-impedance state
high-impedance state
high-impedance state
-
high-impedance state
high-impedance state
high-impedance state
Programmable angle sensor
[1]
[1]
[1]
[1]
Digital output
high-impedance state
diagnosis bit set
high-impedance state
diagnosis bit set
-
diagnosis bit set
high-impedance state
high-impedance state
high-impedance state
© NXP B.V. 2008. All rights reserved.
KMA200
Table 4
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