DataSheet.es    


PDF TJA1021 Data sheet ( Hoja de datos )

Número de pieza TJA1021
Descripción Transceiver
Fabricantes NXP Semiconductors 
Logotipo NXP Semiconductors Logotipo



Hay una vista previa y un enlace de descarga de TJA1021 (archivo pdf) en la parte inferior de esta página.


Total 22 Páginas

No Preview Available ! TJA1021 Hoja de datos, Descripción, Manual

www.DataSheet4U.com
TJA1021
LIN 2.0/SAE J2602 transceiver
Rev. 01 — 16 October 2006
Objective data sheet
1. General description
The TJA1021 is the interface between the Local Interconnect Network (LIN) master/slave
protocol controller and the physical bus in a LIN. It is primarily intended for in-vehicle
sub-networks using baud rates from 1 kBd up to 20 kBd and is LIN 2.0/SAE J2602
compliant. The TJA1021 is pin-to-pin compatible with the TJA1020 and improved on
ElectroStatic Discharge (ESD).
The transmit data stream of the protocol controller at the transmit data input (TXD) is
converted by the TJA1021 into a bus signal with optimized slew rate and wave shaping to
minimize ElectroMagnetic Emission (EME). The LIN bus output pin is pulled HIGH via an
internal termination resistor. For a master application an external resistor in series with a
diode should be connected between pin INH or pin VBAT and pin LIN. The receiver detects
the data stream at the LIN bus input pin and transfers it via pin RXD to the microcontroller.
In sleep mode the power consumption of the TJA1021 is very low, whereas in failure
modes the power consumption is reduced to a minimum.
2. Features
2.1 General
I LIN 2.0/SAE J2602 compliant
I Baud rate up to 20 kBd
I Very low ElectroMagnetic Emission (EME)
I High ElectroMagnetic Immunity (EMI)
I Passive behavior in unpowered state
I Input levels compatible with 3.3 V and 5 V devices
I Integrated termination resistor for LIN slave applications
I Wake-up source recognition (local or remote)
I Supports K-line like functions
I Pin-to-pin compatible with TJA1020
2.2 Low power management
I Very low current consumption in sleep mode with local and remote wake-up
2.3 Protections
I High ESD robustness: ≥ ±6 kV according to IEC 61000-4-2 for pins LIN, VBAT and
WAKE_N
I Transmit data (TXD) dominant time-out function
DataSheet4 U .com

1 page




TJA1021 pdf
www.DataSheet4U.com
NXP Semiconductors
TJA1021
LIN 2.0/SAE J2602 transceiver
7.1 Operating modes
The TJA1021 provides a mode of normal operation, an intermediate mode, a Power-up
mode and a very-low-power mode. Figure 4 shows the state diagram.
Power-on
INH: high
TERM. = 30 k
RXD: floating
TXD: weak pull-down
Transmitter: off
switching on VBAT
t(SLP_N = 1) > tgotonorm
Normal
INH: high
TERM. = 30 k
RXD: receive data output
TXD: transmit data input
Transmitter: on
t(SLP_N = 1) > tgotonorm
t(SLP_N = 0) > tgotosleep
t(SLP_N = 1) > tgotonorm
Sleep
INH: floating
TERM. = high ohmic
RXD: floating
TXD: weak pull-down
Transmitter: off
t(WAKE_N = 0; after 10) > tWAKE_N
or t(LIN = 01; after LIN = 0) > tBUS
Standby
INH: high
TERM. = 30 k
RXD: low
TXD: wake source output
Transmitter: off
001aae073
TERM.: slave termination resistor, connected between pins LIN and VBAT.
Fig 4. State diagram
Table 5.
Mode
Sleep
Operating modes
SLP_N TXD (output)
0 weak pull-down
RXD
floating
INH
floating
Standby[1]
0
weak pull-down if
remote wake-up;
strong pull-down if
local wake-up[2]
LOW[3]
HIGH
Normal mode 1
Power-on mode 0
HIGH: recessive
state
LOW: dominant
state
weak pull-down
HIGH: recessive state HIGH
LOW: dominant state
floating
HIGH
Transmitter Remarks
off no wake-up request
detected
off wake-up request
detected; in this mode the
microcontroller can read
the wake-up source:
remote or local wake-up
normal mode [2][3][4]
off [5]
TJA1021_1
Objective data sheet
Rev. 01 — 16 October 2006
© NXP B.V. 2006. All rights reserved.
5 of 22
DataSheet4 U .com

5 Page





TJA1021 arduino
www.DataSheet4U.com
NXP Semiconductors
TJA1021
LIN 2.0/SAE J2602 transceiver
10. Static characteristics
Table 8. Static characteristics
VBAT = 5.5 V to 27 V; Tvj = 40 °C to +150 °C; RL(LIN-VBAT) = 500 ; all voltages are defined with respect to ground; positive
currents flow into the IC; typical values are given at VBAT = 12 V; unless otherwise specified.[1]
Symbol
Parameter
Conditions
Min
Typ Max
Unit
Supply
IBAT supply current on pin
VBAT
Power-on reset
sleep mode
(VLIN = VBAT;
VWAKE_N = VBAT;
VTXD = 0 V;
VSLP_N = 0 V)
standby mode; bus
recessive (VINH = VBAT;
VLIN = VBAT;
VWAKE_N = VBAT;
VTXD = 0 V;
VSLP_N = 0 V)
standby mode; bus
dominant (VBAT = 12 V;
VINH = 12 V; VLIN = 0 V;
VWAKE_N = 12 V;
VTXD = 0 V;
VSLP_N = 0 V)
normal mode; bus
recessive (VINH = VBAT;
VLIN = VBAT;
VWAKE_N = VBAT;
VTXD = 5 V;
VSLP_N = 5 V)
normal mode; bus
dominant (VBAT = 12 V;
VINH = 12 V;
VWAKE_N = 12 V;
VTXD = 0 V;
VSLP_N = 5 V)
4
150
300
400
1
7 10
µA
450 1000
µA
800 1600
µA
800 2000
µA
26
mA
Vth(POR)L
LOW-level power-on
power-on reset
reset threshold voltage
1.6 3.1 3.9 V
Vth(POR)H
HIGH-level power-on
reset threshold voltage
2.3 3.4 4.3 V
Vhys(POR)
power-on reset
hysteresis voltage
0.05 0.3 1
V
Vth(VBATL)L
LOW-level VBAT LOW
threshold voltage
3.9 4.4 4.7 V
Vth(VBATL)H
HIGH-level VBAT LOW
threshold voltage
4.3 4.7 4.9 V
Vhys(VBATL)
VBAT LOW hysteresis
voltage
0.15 0.3 0.6
V
TJA1021_1
Objective data sheet
DataSheet4 U .com
Rev. 01 — 16 October 2006
© NXP B.V. 2006. All rights reserved.
11 of 22

11 Page







PáginasTotal 22 Páginas
PDF Descargar[ Datasheet TJA1021.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
TJA1020LIN transceiverNXP Semiconductors
NXP Semiconductors
TJA1020TLIN transceiverNXP Semiconductors
NXP Semiconductors
TJA1020ULIN transceiverNXP Semiconductors
NXP Semiconductors
TJA1020_5LIN transceiverNXP Semiconductors
NXP Semiconductors

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar