E981.03A38HB ELMOS Semiconductor, E981.03A38HB Datasheet - Page 16

• Manufacturer Part Number: E981.03A38HB
• Description: Interface - Specialized KNX/EIB transceiver
• Manufacturer: ELMOS Semiconductor

Specifications of E981.03A38HB

• Rohs: yes
• Product Type: KNX/EIB Transceiver
• Operating Supply Voltage: 3.3 V
• Supply Current: 10 mA
• Maximum Power Dissipation: 1 W
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Minimum Operating Temperature: - 25 C

Table 3. KNX frame timing
5.5 AOUT
The pin AOUT is used to monitor several voltages. The
source can be selected by a register value. The analog
monitor signal is not filtered by the E981.03. Especially
the scaled analog bus voltage is not the mean value of
the bus voltage but follows the BUSP line immediately.
Between AOUT buffer and AOUT pin a series resistor of
approximately 10 k is implemented in E981.03. It can be
other multiplexer configuration are invalid
1) The band gap voltage can be used to increase the precision of the ADC.
AOUT is controlled by Register
5.6 WK
The WK pin is configurable as output for remote wake-up with trigger telegram or as general purpose input. To con-
figure as a input change bit EN_OUT to “0” in Register
input state read bit WK in the Register PINS.
ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
VIO = 3.3 V
VIO = 5 V
Description
Time between end of telegram
upload from host processor to
E981.03 and start of telegram
transmission on EIB bus
(in case of idle EIB bus)
Time between end of telegram
upload from host processor to
E981.03 and start of telegram
transmission on EIB bus
(in case of idle EIB bus)
Wait time after BUSY acknowl-
edge
KNX/ EIB TRANSCEIVER
PRODUCTION DATA - JUL 2, 2012
ELMOS Semiconductor AG
V
V
BUS
BUS
/12
/8
AOUT_CTRL[0]
0
1
VBUS / 12
VBUS / 8
V
AOUT_SRC[0:1]
Temp
V
BG
AOUT_CTRL
1
2
3
Condition
bit TXDEL of
register
UART_CTRL = 0
L_Data or
L_PollData
frame
bit TXDEL of
register
UART_CTRL = 0
L_ExtData frame
and Register AOUT_SRC.
Figure 5. Analog Monitoring
+
-
E981.03
Data Sheet
16/51
TRIGGER
used to realize a first order RC filter by connecting AOUT
to an external capacitor C
voltage needs to take the intern resistor value into ac-
count (high impedance measurement input use).
Measurement values are:
•
•
•
Symbol
t
t
Approx.
BUSY,rep
tr,delay,var
Temperature voltage
Band gap voltage
Bus voltage
10kΩ
(0x214). Default configuration is output. To read
AOUT
Min
1)
Typ
104
ext
. Measurement of AOUT
QM-No.: 25DS0046E.01
external µC
Analog IN
Max
104
250
E981.03
Unit
µs
µs
µs