AS8530_1 Datasheet, PDF (1/32 Pages) ams AG – LIN Transceiver with Integrated Voltage Regulator and MCU Interface for Automotive Applications

Datasheet
AS8530
LIN Transceiver with Integrated Voltage Regulator and
MCU Interface for Automotive Applications
1 General Description
The AS8530 is a general purpose companion IC for sensor and
actuator LIN slaves offering LIN transceiver and low drop voltage
regulator.
It also provides a 2-wire microcontroller interface through shared EN
and TX pins to access a window watchdog with RC oscillator, control
registers, backup registers and monitoring information.
The IC is fabricated in a high voltage CMOS technology which is
able to withstand voltages up to 42V.
The product is available in ep-SOIC8 package.
Typically 45µA quiescent current in standby mode,
Typically 35µA quiescent current in sleep mode
Under voltage reset with factory options
LIN bus transceiver l conforming to LIN 2.1, TX time out fail
safe feature, over temperature warning and shut down
Window watchdog if factory enabled
Micro controller 2-wire interface through shared pins for
watchdog trigger, monitoring, register read /write
Chip ID for traceability and module ID
8 Backup registers to store data during VCC shut down
2 Key Features
ep-SOIC8 package
-40ºC to +125ºC ambient operating temperature
Operating voltage 6V to 18V
Linear, low-drop voltage regulator: VCC = 5V ±5% or 3.3V ±5%
as a factory programming option
50mA load current
Operating modes: Normal and Standby or Normal and Sleep as
a factory option
3 Applications
The AS8530 is a System Basis Chip for automotive LIN networked
sensor or actuator slaves.
Figure 1. AS8530 LIN Transceiver Block Diagram
VSUP
LDO
VCC
POR-VSUP
Temperature
Limiter
AS8530
POR-VCC
RESET_VSUP_N
TSHD
RESET_VCC_N
EN
Mode
Control
Control
Signals
Reset
RESET_VSUP_N ^LIN
Wakeup
WWD Output ^Block
RESET
2-Wire
Interface
Window
Watchdog
(WWD)
VSUP
Receiver
30k
Transmitter
LIN
Slew
Control
RX
VCC
15k
TX
GND
LIN Transceiver
www.austriamicrosystems.com/Lin_CompanionIC/AS8530
Revision 1.0
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