TJA1021T/20.118 NXP Semiconductors, TJA1021T/20.118 Datasheet - Page 4

• Manufacturer Part Number: TJA1021T/20.118
• Manufacturer: NXP Semiconductors

Specifications of TJA1021T/20.118

• Operating Supply Voltage (min): 5.5V
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 8
• Lead Free Status / Rohs Status: Compliant

NXP Semiconductors
6. Pinning information
7. Functional description
TJA1021_5
Product data sheet
6.1 Pinning
6.2 Pin description
7.1 Operating modes
Table 3.
The TJA1021 is the interface between the LIN master/slave protocol controller and the
physical bus in a Local Interconnect Network (LIN). The TJA1021 is LIN 2.1/SAE J2602
compliant and provides optimum ElectroMagnetic Compatibility (EMC) performance due
to wave shaping of the LIN output.
The /20 versions of the TJA1021 are optimized for the maximum specified LIN
transmission speed of 20 kBd; the /10 version of the TJA1021 is optimized for the LIN
transmission speed of 10.4 kBd as specified by the SAE J2602.
The TJA1021 supports modes for normal operation (Normal mode), power-up (Power-on
mode) and very-low-power operation (Sleep mode). An intermediate wake-up mode
between Sleep and Normal modes is also supported (Standby mode).
state diagram.
Symbol
RXD
SLP_N
WAKE_N
TXD
GND
LIN
V
INH
Fig 2.
BAT
Pin configuration diagram
Pin description
Pin
1
2
3
4
5
6
7
8
Rev. 05 — 22 October 2009
Description
receive data output (open-drain); active LOW after a wake-up
event
sleep control input (active LOW); controls inhibit output; resets
wake-up source flag on TXD and wake-up request on RXD
local wake-up input (active LOW); negative edge triggered
transmit data input; active LOW output after a local wake-up event
ground
LIN bus line input/output
battery supply
battery related inhibit output for controlling an external voltage
regulator; active HIGH after a wake-up event
WAKE_N
SLP_N
RXD
TXD
1
2
3
4
TJA1021TK
TJA1021T
015aaa106
8
7
6
5
INH
V
LIN
GND
LIN 2.1/SAE J2602 transceiver
BAT
Figure 3
© NXP B.V. 2009. All rights reserved.
TJA1021
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