ADNS-3050 Avago Technologies US Inc., ADNS-3050 Datasheet - Page 10

• Manufacturer Part Number: ADNS-3050
• Description: Optical Sensors - Board Mount Optical Nav Sensor
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-3050

• Lead Free Status / Rohs Status: Details

Table 4. DC Electrical Specifi cations
Electrical characteristics over recommended operating conditions. Typical values at 25° C, VDD
EG3E, R
10
Synchronous Serial Port
The synchronous serial port is used to set and read pa-
rameters in the ADNS-3050, and to read out the motion
information. The port is a four wire serial port. The host
micro-con troller always initiates communication; the
ADNS-3050 never initiates data transfers. SCLK, MOSI, and
NCS may be driven directly by a micro-controller. The port
pins may be shared with other SPI slave devices. When the
NCS pin is high, the inputs are ignored and the output is
at tri-state.
The lines that comprise the SPI port:
SCLK: Clock input. It is always generated by the master
MOSI: Input data. (Master Out/Slave In)
MISO: Output data. (Master In/Slave Out)
NCS: Chip select input (active low). NCS needs to be low
Parameter
DC Supply Current
Power Down Current
Input Low Voltage
Input High Voltage
Input Hysteresis
Input Leakage Current
Output Low Voltage
Output High Voltage
Input Capacitance
(the micro-controller).
to activate the serial port; otherwise, MISO will be
high Z, and MOSI & SCLK will be ignored. NCS can
also be used to reset the serial port in case of an
error.
LED
= 33 .
Symbol
I
I
I
I
I
I
V
V
V
I
V
V
Cin
DD_RUN_DC
DD_RUN_WIRELESS
DD_REST1
DD_REST2
DD_REST3
PD
leak
IL
IH
I_HYS
OL
OH
Min
Vdd-0.5
Vdd-0.7
Typ.
26.604
14.236
0.817
0.105
0.022
10
200
±1
50
Chip Select Operation
The serial port is activated after NCS goes low; otherwise,
MISO will be high-Z, while MOSI and SCLK will be ignored.
If NCS is raised during a transaction, the entire transaction
is aborted and the serial port will be reset. This is true for
all transactions. After a transaction is aborted, the nor-
mal address-to-data or transaction-to-transaction delay
is still required before beginning the next transaction. To
improve communication reliability, all serial transactions
should be framed by NCS. NCS can also be used to reset
the serial port in case of an error occurs.
Max
0.5
±10
0.7
Units
mA
μA
V
V
mV
V
V
pF
μA
Notes
Including LED current.
No load on MISO
Default sensor setting for Rest 1,
Rest 2 and Rest 3 modes
SCLK, MOSI, NCS
SCLK, MOSI, NCS
SCLK, MOSI, NCS
Vin=VDD-0.6V, SCLK, MOSI, NCS
Iout=1mA, MISO, MOTION
Iout=-1mA, MISO, MOTION
MOSI, NCS, SCLK
LED
= 2.8 V, IRLED HLMP-