INFINEON TLE 6258 User Manual
现货库存、技术资料、百科信息、热点资讯，精彩尽在鼎好!
Single-Wire-Transceiver TLE 6258
Preliminary Data Sheet
1Overview
1.1 Features
• Single-wire transceiver, suitable for LIN protocol
• Compatible to LIN specification
• Compatible to ISO 9141 functions
• Transmission rate up to 20 kBaud
• Very low current consumption in stand-by mode
• Short circuit proof to ground and battery
• Overtemperature protection
P-DSO-8-3
Type Ordering Code Package
TLE 6258 G Q67006-A9469 P-DSO-8-3
Description
The single-wire transceiver TLE 6258 is a monolithic integrated circuit in a P-DSO-8-3
package. It works as an interface between the protocol controller and the physical bus.
The TLE 6258 is especially suitable to drive the bus line in LIN systems in automotive
and industrial applications. Further it can be used in standard ISO9141 systems.
In order to reduce the current consumption the TLE 6258 offers a stand-by mode. A
wake-up caused by a message on the bus sets the RxD output low until the device is
switched to normal operation mode.
®
The IC is based on the Siemens Power Technology SPT
which allows bipolar and
CMOS control circuitry in accordance with DMOS power devices existing on the same
monolithic circuit.
The TLE 6258 is designed to withst and the severe c onditions of automotive applic ations.
1 version: 2.02 date: 2001-08-08
1.2 Pin Configu r at io n (top view)
Preliminary Data TLE 6258
RxD
ENN
TxD
1
2
3
4
Figure 1: Pinout
1.3
Pin Definitions and Functions
Pin No. Symbol Function
P-DSO-8-3
8
7
6
5
n.c.
Vs
BusVcc
GND
1RxDReceive data output; integrated pull up, LOW i n dominant state,
2ENNEnable not input; integrated 30 kΩ pull up, transceiver i n normal
operation mode when LOW
3V
CC
5V supply input;
4TxDTransmit data input; integrated pull up, LOW in dominant state
5GNDGround;
6BusBus output/i nput; internal 30 kΩ pull up, LOW in dominan t state
7VsBattery supply input;
8 n.c. not connected
2 version: 2.02 date: 2001-08-08
1.4 Functional Block Diagram
7 3
Vs
Preliminary Data TLE 6258
Vcc
30 k
Ω
30 k
Ω
6
Bus
TLE 6258 G
Figure 2: Block Diagram
Output
Stage
Driver
Temp.-
Protection
Mode
Control
Receiver
2
4
1
5
ENN
TxD
RxD
GND
3 version: 2.02 date: 2001-08-08
1.5 Application In formation
Preliminary Data TLE 6258
Start Up
Power Up
Normal Mode
ENN
low
high
ENN
Stand-By
ENN
high
1)
RxD becomes low when wake-up via bus
Vcc
ON
1)
V
CC
ON
ENN
low
Figure 3: State Diagram
For fail safe reasons the TLE6258 has already a pull up resistor of 30kΩ implemented.
To achieve the re quired ti mings for t he dominan t to reces sive tr ansition of the bus signal
an additional exter nal terminat ion resistor of 1kΩ is required. It is recommen ded to place
this resistor in the master node. To avoid reverse currents from the bus line into the
battery supply line in case of an unpower ed nod e, it i s recommende d to pl ace a di ode in
series to the external pull up. For small systems (low bus capacitance) the EMC
performance of the system is supported by an additional capacitor of at least 1nF in the
master node (see figure 6, application circuit).
In order to reduce the current consumption the TLE 6258 offers a stand-by mode. This
mode is selected by switching the Enable Not (ENN) input high (see figure 3, state
diagram). In the st and-by mode a wake-up caused by a message o n the bus i s indica ted
by setting the RxD out put low. When en tering th e normal mode th is wake-up fl ag is reset
and the RxD output is released to transmit the bus data.
4 version: 2.02 date: 2001-08-08
Loading...