E981.03 Datasheet, PDF (11/51 Pages) ELMOS Semiconductor AG – Autonomous MAC and individual physical address

KNX/ EIB TRANSCEIVER
PRODUCTION DATA - JAN 15, 2015
E981.03
Electrical Characteristics (continued)
(V_BUSP = 19V … 33V, T_AMB = -25°C … +85°C, unless otherwise noted. Positive currents are flowing into the device pins.
Typical values are at T_AMB = +25°C, unless otherwise noted.)
Description
Condition
Temperature limit for switching
on power consuming functions
High level at pin OTEMP
Low level at pin OTEMP
Temperature step per LSB
IV_{OVTEIOM=P5=V-5} mA,
I_OTEMP = -2 mA
IV_{OVTEIOM=P5=V5} mA,
I_OTEMP = 2 mA
Aout scaling factor for low voltage
VBUSP signal used for measure-
ment (V_AOUT / V_BUSP)
Aout scaling factor for low voltage
VBUSP signal used for measure-
ment (V_AOUT / V_BUSP)
Symbol
T_shutoff,off
V_OTEMP,high,5
V_OTEMP,high,2
V_OTEMP,low,5
V_OTEMP,low,2
ΔT_LSB
Scale_VBUSP,
AOUT,3V3
Scale_VBUSP,
AOUT,5V
Min
Typ
T_warn,on
+20°C
V_IO-0.7V
V_IO-0.4V
2.5
1/12.2 1/12
1/8.1 1/8
Max Unit
°C
0.7
V
0.4
V
K
1/11.8
1/7.9
4 Hardware Configuration
Pins of SPI and UART interfaces, SAVE, RESET, WK, INT and OTEMP are prepared for galvanic insulation with optical
coupler. MISO, TXD, SAVE, RESET, WK, INT and OTEMP can provide a current of 5 mA for driving a diode of an opti-
cal coupler in case of VIO = 5 V.
For lower power consumption set VIO_SW bit in PS_CTRL register.
4.1 PCB Design Rules
Figure 1. PCB Layout
Remark! The layout example is incomplete! The layout only gives an example about the placement of the DC/DC
converter components, the external capacitors and GND routing.
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
Data Sheet
QM-No.: 25DS0046E.03
11/51