E909.06A61DC ELMOS Semiconductor, E909.06A61DC Datasheet - Page 16

• Manufacturer Part Number: E909.06A61DC
• Description: Processors - Application Specialized Halios multipurpose sensor IC - Auto
• Manufacturer: ELMOS Semiconductor

Specifications of E909.06A61DC

• Rohs: yes
• Processor Series: EL16
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 8 MHz
• Data Ram Size: 3 kB
• Operating Supply Voltage: 2.25 V to 2.75 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Interface Type: I2C, SPI
• Memory Type: Flash, SRAM
• Minimum Operating Temperature: - 40 C
• Number Of Timers: 2

4.6 HALIOS® Interface
4.6.1 HALIOS® Block Diagram
Figure 7: HALIOS® Block Diagram
4.6.2 HALIOS® Features
In order to be able to realize optical as well as capacitive sensors the input amplifier can be changed in its charac-
teristic between transimpedance amplifier and charge amplifier. This is achieved by changing the feedback imped-
ance. To have a good immunity to noise the receiving path consists of a symmetrical differential input.
The HALIOS® IC contains a configurable current driver interface. In the case of an optical sensor it is possible to
drive up to four sending LEDs and one compensation LED. If a capacitive sensor should be realized, the current is
converted into a voltage by connecting pullup resistances at the outputs LEDx. The HALIOS® measurement loop is
closed by a 10 bit DAC which regulates the output current for the sending/compensation LED. The DAC is control-
led by a counter that sets the DAC dependent on the received signal amplitudes up or down.
To follow fast signal changes the counter can be increased or decreased by 1, 2, 4 or 8 steps, this is called the step
size that is set due to the number of up/down-counts in the same direction. To start a new measurement the in-
terface is configured with the counter-value and the step size (generally the values from the last measurement),
the LED configuration and the current configuration for the LED driver. The measurement regulates the DAC and
performs 25 counter steps to follow the actual reflection conditions of the sensor. After one measurement the in-
terface returns the counter-value, the mean-value (it is calculated from the last 16 counter-steps during one meas-
urement) and the stepsize from the last integrator cycle.
ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
HALIOS® MULTI PURPOSE SENSOR FOR AUTOMOTIVE
PRODUCTION DATA - NOV 16, 2011
ELMOS Semiconductor AG
AMP_AN
AMP_KA
LEDC
LED1
LED2
LED3
LED4
AN
KA
-
+
+
-
Switch
MUX
Analog
-
+
Current
Control
Data Sheet
HP
16/71
DAC
DAC
DAC
DAC
DAC
DAC
demod.
10
5
5
5
5
5
offset
offset
range
range
offset ledc
1
1
2
Digital
Register
counter
clocks
10 bit
QM-No.: 25DS0049E.02
clk
rst
adr
din
dout
E909.06