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NXP Semiconductors - LIN-I/O slave

Numéro de référence UJA1023
Description LIN-I/O slave
Fabricant NXP Semiconductors 
Logo NXP Semiconductors 





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UJA1023 fiche technique
UJA1023
LIN-I/O slave
Rev. 5 — 17 August 2010
Product data sheet
1. General description
The UJA1023 is a stand-alone Local Interconnect Network (LIN) I/O slave that replaces
basic components commonly used in electronic control units for input and output handling.
The UJA1023 contains a LIN 2.0 controller, an integrated LIN transceiver which is
LIN 2.0 / SAE J2602 compliant and LIN 1.3 compatible, a 30 kΩ termination resistor
necessary for LIN-slaves, and eight I/O ports which are configurable via the LIN bus.
An automatic bit rate synchronization circuit adapts to any (master) bit rate between
1 kbit/s and 20 kbit/s. For this, an oscillator is integrated.
The LIN protocol will be handled autonomously and both Node Address (NAD) and LIN
frame Identifier (ID) programming will be done by a master request and an optional slave
response message in combination with a daisy chain or plug coding function.
The eight bidirectional I/O pins are configurable via LIN bus messages and can have the
following functions:
Input:
Standard input pin
Local wake-up
Edge capturing on falling, rising or both edges
Analog input pin
Switch matrix (in combination with output pins)
Output:
Standard output pin as high-side driver, low-side driver or push-pull driver
Cyclic sense mode for local wake-up
Pulse Width Modulation (PWM) mode; for example, for back light illumination
Switch matrix (in combination with input pins)
On entering a low-power mode it is possible to hold the last output state or to change over
to a user programmable output state. In case of a failure (e.g. LIN bus short to ground) the
output changes over to a user programmable limp home output state and the low-power
Limp home mode will be entered.
Due to the advanced low-power behavior the power consumption of the UJA1023 in
low-power mode is minimal.

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