UJA1023T/2R04,512 NXP Semiconductors, UJA1023T/2R04,512 Datasheet - Page 6

• Manufacturer Part Number: UJA1023T/2R04,512
• Description: IC CAN/LIN I/O SLAVE 32HTSSOP
• Manufacturer: NXP Semiconductors

Specifications of UJA1023T/2R04,512

• Applications: LIN Controller
• Interface: LIN (Local Interconnect Network)
• Voltage - Supply: 6.5 V ~ 27 V
• Package / Case: 16-SOIC (3.9mm Width)
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935281302512; UJA1023T/2R04; UJA1023T/2R04

NXP Semiconductors
UJA1023
Product data sheet
7.2.1.1 Message sequence
7.1.8 Cyclic sense
7.2.1 Configuration
7.2 LIN controller
To reduce current consumption, the cyclic sense function can be used to read a switch.
The switch will be supplied and read back periodically.
In this data sheet basic knowledge of the “LIN diagnostic and configuration specification,
Rev. 2.0” is expected.
The UJA1023 conforms to the “LIN diagnostic and configuration specification, Rev. 2.0”
and is compatible with LIN 1.3.
The UJA1023 can be configured via the LIN command frames ‘Master Request’
(MasterReq) and ‘Slave Response’ (SlaveResp). Both frames consist of eight data bytes.
The MasterReq is used to send configuration data from the master to the slaves, whereas
the slave being addressed by the prior MasterReq will answer with the related data on
demand.
Depending on the usage of the MasterReq the meaning of the data bytes can be different.
Thus each LIN slave evaluates these data bytes.
Using MasterReq and SlaveResp for the UJA1023 configuration flow, as shown in
Figure
data in the SlaveResp, so the master can review slave configuration data. The use of the
SlaveResp is optional.
The configuration flow is not disturbed if LIN commands other than shown in
sent to other LIN slave nodes. Thus the LIN master can transmit other LIN messages
while it (re)configures the UJA1023.
Remarks:
•
•
•
The I/O configuration will be enabled during the first usage of the UJA1023 message
frames (see
Notation Px is used in this document when referring to a function or property of any of
the I/O pins P0 to P7
For correct I/O configuration, the configuration requests must be sent in sequential
order of first, second and third configuration data block
3, is a so-called ‘handshake’ concept. The slave echoes its received MasterReq
All information provided in this document is subject to legal disclaimers.
Section
Rev. 5 — 17 August 2010
7.2.5) of the PxResp or PxReq
UJA1023
© NXP B.V. 2010. All rights reserved.
LIN-I/O slave
Figure 3
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are