AS8530 Datasheet, PDF (1/29 Pages) ams AG – LIN Transceiver with Integrated Voltage Regulator and MCU Interface for Automotive Applications

Preliminary Data Sheet
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.
As well it 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 50V.
The product is available in SOIC package with exposed pad.
Under voltage reset with factory options
LIN bus transceiver with load independent slew control
conforming to LIN 2.1 and SAE J2602, short circuit protection,
TX time out fail safe feature, over temperature warning and shut
down
6kV ESD on LIN pin according to IEC 61000-4-2
Window watchdog if factory enabled.
Micro controller 2-wire interface through shared pins for watch-
dog 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
Operating voltage 6 to 18V, max 42V for 500ms
8 pin epSOIC package
-40ºC to +125ºC ambient operating temperature
Linear, low-drop voltage regulator: VCC = 5V±3% or 3.3V as a
factory programming option
3 Applications
50mA load current
Operating modes: Normal and Standby or Normal and Sleep as
a factory option
The AS8530 is a System Basis Chip for automotive LIN networked
sensor or actuator slaves.
Typically 40µA quiescent current in standby mode, Typically
30µA quiescent current in sleep mode
Figure 1. AS8530 LIN Transceiver Block Diagram
VSUP
EN
BUS
GND
LDO
VCC
POR-VSUP
Temperature
Limiter
AS8530
POR-VCC
RESET_VSUP_N
TSHD
Mode
Control
Control
Signals
RESET_VCC_N
Reset
WWD Output ^Block
RESET_VSUP_N LIN Wakeup
2 wire inter-
face
Window
Watchdog
(WWD)
VSUP
Receiver
30k
Transmitter
LIN Transceiver
Slew
Control
VCC
RESET
RX
VCC
15k
TX
www.austriamicrosystems.com/Lin_CompanionIC/AS8530
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