E909-05 Datasheet, PDF (12/67 Pages) ELMOS Semiconductor AG – The HALIOS® multi purpose optical sensor is based on an optical bridge which provides a contactless detec-tion of gestures (e.g. movement of a finger).

HALIOS® MULTI-PURPOSE OPTICAL SENSOR WITH HIGH LIGHT IMMUNITY
E909.05
PRELIMINARY INFORMATION AUG 02, 2011
4.4.4.4 Receiver
No. Parameter
Condition
1
Transimpedance at ampli-
fier input (CA)
2
DC photo-current compens-
ation
3
Voltage at transimpedance
amplifier input
4
Corner frequency high pass
filter
5 Gain amplifier
6 Total gain
7 Center frequency
8
Resolution demodulator
output
9
Capacitance of photo diode
at input CA
10 Internal reference voltage
11 Internal reference current
Table 4.4.4.4.1 Receiver
5 Functional Description
Symbol
Rf
Min.
70
IDC
VKA
fG
G0
GTOT
fC
NDEMOD
-
CDIODE
VREF
IBIAS
Typ.
100
1.25
22
30
130
125
1
1.22
10
Max. Unit
130
kΩ
1000 µA
V
kHz
dB
dBΩ
kHz
-
bit
70
pF
V
µA
5.1 Introduction
The general architecture of the 3D-optical input device is shown in the system block diagram.
The CPU is connected to the memory (FLASH and SRAM) and the peripheral modules via the internal sys-
tem bus. The system bus provides a 16 bit address space and allows 8 and 16 bit data transfers.
The memory contains the program code and the data. Memory and registers are mapped to the global
memory map and can be accessed through all memory related operation provided by the CPUs instruction
set.
The memory of the ASIC consists of a 16Kx16 (32KByte) flash cell and a 1.5Kx16 (3KByte) SRAM cell.
The Interrupt Controller collects requests from all interrupt sources and provides an interrupt signal to the
CPU. Interrupt sources can be masked within the interrupt controller. Interrupts are generated by the mod-
ules and hold until they are cleared within the module. See module description for clearing procedures.
The SPI can be configured either as a master or a slave. Transfer length is eight bit and can be extended by
a multiple of eight bit. Data FIFOs are provided for transmit and receive tasks.
The timer module contains a 32 bit timer module as well as a watchdog timer. Additionally a second timer
module operating on wakeup clock is implemented that remains active even in off mode, so it can be used for
a periodical wake up from off mode for applications that require a low current consumption.
6 IO port pins can either be configured as general purpose IO`s or can be configured as ports for the SPI or
JTAG module. Additionally two ports are reserved for the I²C slave interface.
This document contains information on a pre-production product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.
ELMOS Semiconductor AG
Data Sheet 12 / 67
QM-No.: 25DS0014E.00