E524.11 Datasheet, PDF (1/2 Pages) ELMOS Semiconductor AG – LIN SMART ULTRASONIC PARKING ASSIST

LIN SMART ULTRASONIC PARKING ASSIST
PRODUCTION DATA - DEC 5, 2013
E524.11, E524.14
Features
ÿÿ Stand-alone Ultrasonic Park Assist Solution
ÿÿ Includes Driver for Ultrasonic Transducer
ÿÿ Programmable Transducer Power
ÿÿ Programmable Receiver Sensitivity
ÿÿ EEPROM Storage of Calibration Values
ÿÿ Digital Filtering and Signal Processing
ÿÿ Adjustable Burst Length and Filter Bandwidth
ÿÿ Low Noise Down to 0.5μVRMS
ÿÿ Internal Oscillator
ÿÿ LIN 2.1 Interface with (SNPD)
ÿÿ Short/Long Distance Range Modes
ÿÿ 8bit CPU with 16MHz Clock
ÿÿ 8KByte Customer FLASH
ÿÿ 512Byte RAM
ÿÿ Fast Calibration Data Exchange via LIN
Product ID
E524.11
E524.14
FLASH
X
X
LIN (SNPD)
Range
Extension
X
X
Applications
ÿÿ Ultrasonic Park Assist Systems (USPA)
ÿÿ Blind Spot Detection
ÿÿ Industrial Distance Measuring
ÿÿ Robotics
General Description
The E524.1x with integrated microcontroller offer ul-
trasonic range detection with minimum component
count. A single ultrasonic transducer with a center
tapped transformer is directly driven with programma-
ble 30kHz to 80kHz bursts. Supported transducers al-
low distance measuring from 15cm to 4m and beyond
in extended range mode.
The received echo signal is amplified and converted
by an ADC. Digital filtering achieves excellent tracking
with the sending frequency without external compo-
nents or trimming. Optional temperature compensa-
tion is available through GPIO pins.
An onboard EEPROM stores processed values of the os-
cillator/sending frequency, transmitted power and re-
ceiver sensitivity. Communication to an ECU is via a sin-
gle-wire bus compatible with LIN 2.1. For ease of use,
a System ROM is pre-programmed with application
support routines. Available software examples cover
threshold-based echo detection, a basic LIN stack and
a complete USPA application example
All ICs contain EEPROM. Options include LIN with SNPD
(Slave Node Position Detection) and Range Extension.
Ordering Information
Product ID
E524.1x
Temp. Range_AMB
-40°C to +105°C
Package
QFN20L5
Typical Application Circuit
RSUP_TD
CSUP_TD
Note: “1x” refers to available options such as LIN and Range
Extension
RTD1
CTD1
CAIN2
RAIN
CAIN1
Ultrasonic
Transducer
VBAT ^RSUP
DSUP
CSUP1
CSUP2
VSUP
DRV1
DRV2
AING
AINS
GPIO1
GPIO2
TDO / GPIO3
TDI / GPIO4
Note:
BUS_S E524.14 only
LIN_S
LIN_M
CBUS
BUS_S
BUS_M
GNDB
E524.1x
VDDD
GNDD
VDDA
GNDA
CVDDD
CVDDA
GNDP TMEN TCK TMS
Elmos Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
Elmos Semiconductor AG
Info Sheet
QM-No.: 25IS0075E.04