ADNK-5033-FS27 Avago Technologies US Inc., ADNK-5033-FS27 Datasheet - Page 9

• Manufacturer Part Number: ADNK-5033-FS27
• Description: KIT REF DES OPT MOUSE ADNS-5030
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNK-5033-FS27

• Main Purpose: Reference Design, Optical Mouse
• Utilized Ic / Part: ADNS-5030
• Wireless Frequency: 27 MHz
• Interface Type: USB
• Modulation: FSK
• For Use With/related Products: MC68HC908QY4A, MC68HC908JB12
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Power Management Scheme
Figure 8 shows the flow of the power management of
the optical mouse. The ADNS-5030 has three internal
power-saving modes. Each mode has a different motion
detection period, affecting response time to mouse
motion (Response Time). The sensor automatically
changes to the appropriate mode, depending on the
time since the last reported motion (Downshift Time).
The parameters of each mode are shown in the chart.
The HC908QY4A MCU firmware will optimize the
system power consumption according to the motion
detection result of the ADNS-5030 optical sensor.
All the system components are fully operating when
there is XY displacement motion.
consumption is the maximum in this stage. The
HC908QY4A MCU will continuously to check the ADNS-
5030 optical sensor for any displacement motion and
detect any button activities or Z-wheel motion.
Figure 8. Power Management.
MCU power saving modes
9
sensor for 10s
• Optical sensor is read
• Optical Wheel motion
• MCU suspends
• Optical sensor/wheel
motion /buttons are
checked every 90ms
• MCU suspends
•Optical sensor/wheel
continuously for any XY
motion/buttons are
checked every 1ms
checked about every 18ms
and buttons are
motion /buttons are
checked every 500ms
• MCU suspends
• Optical sensor/wheel
no motion
read from
no motion
read from
for 600s
sensor
XY motion
/button
actions
/wheel
motion is
detected
XY
motion
/button
actions
/wheel
motion is
detected
XY
motion
/button
actions
/wheel
motion is
detected
The power
Optical sensor power saving modes
response time is 20ms
response time is 100ms
response time is 500ms
Optical sensor is
fully responsive
Optical sensor
Optical sensor
Optical sensor
If there is no motion detected from the optical sensor
for 250ms, HC908QY4A MCU will suspend and get into
the STOP mode. The HC908QY4A MCU will wakeup
periodically approximately every 18ms. The MCU will
read the optical sensor and check for any Z-wheel
motion during the wakeup period.
If there is no motion detected from the sensor for
another 10 seconds, the HC908QY4A MCU will then
check the optical sensor and Z-wheel motion on around
every 90ms. HC908QY4A will remain in STOP mode at
the most of the time.
If there is no motion for further 600s, the HC908QY4A
MCU will wakeup to check for the optical sensor and
Z-wheel motion on about every 500ms. The system
will have the least power consumption in this stage.
During any suspend stages, any XY displacement
motion, Z-wheel motion or buttons action will bring
the HC908QY4A back to the fully responsive stage, i.e.,
reading the optical sensor continuously and detecting
the Z-wheel and buttons on every 1ms.
(Mode 1)
(Mode 2)
(Mode 3)
no motion detected
for 250ms
for 10s
no motion detected
for 600s