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Right Angle Optical Track Sensor PixArt Imaging Inc. PixArt Imaging Inc. http://www.pixart.com All rights reserved. Any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. Version 1.02 |12 Jul 2016 | 21001EN PMT9123QS-TVIT: Low Power Right Angle Optical Track Sensor Product Datasheet General Description The PMT9123QS-TVIT is PixArt Imaging's low power, right angle Optical Track Sensor in a small form factor QFN package. It has a new low-power architecture and automatic power management modes, based on optical navigation technology that enables digital surface tracking, ideal for battery-powered wireless input devices. The PMT9123QS-TVIT integrates optical sensor and IR LED light source in a single SMT package, and together with LST0-M30 lens assembly, form a complete and compact tracking system that does not require code wheel, code strip and any special marking on tracking surfaces for motion control or tracking purposes. Key Features  Right Angle Small Form Factor Package with total solution size of 6.0 mm x 6.0 mm x 3.6 mm enabling 90 degree viewing angle to the tracking surface  Low power consumption of 0.45 mA @ run mode with programmable down shifts and wake up times  12-bits motion data registers  High speed motion detection 25 ips and acceleration 8 g  Motion detect pin output  Internal oscillator – no clock input needed  Resolution up to 2000 cpi

Applications

 Devices that require motion and tracking capabilities  Suitable for space-constraint and battery-powered devices  Consumer Product Applications Key Parameters Parameter Value Supply Voltage (V) VDD: 1.7 – 2.0 Resolution (cpi) 2000 Speed (ips) 25 Acceleration (g) 8 Interface 2-Wire Interface (TWI) Area of Interest (AOI) 3 x 3 mm Package Type 28-pin QFN Package with Lens Assembly: 6.0 x 6.0 x 3.6 mm Optical Lens Magnification 1:1

Ordering Information

PMT9123QS-TVIT 28-pin QFN Package LST0-M30 Lens Assembly For any additional inquiries, please contact us at http://www.pixart.com/contact.asp

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1.3 Signal Description

Figure 2. Pin Configuration Table 1. PMT9123 Signal Pins Description

3 VREG Power Internal voltage output

27 LED+ Power Supply to LED anode

1 GND Ground Ground

11 GND Ground Ground

21 GND Ground Ground

22 GND Ground Ground

28 GND Ground Ground

24 LED- Ground LED cathode, must connect to XY_LED

25 LED- Ground LED cathode, must connect to XY_LED

26 LED- Ground LED cathode, must connect to XY_LED

7 SCL Input Serial data clock

20 SDA Input / Output Serial data

PixArt Imaging Inc. PMT9123 Product Datasheet Right Angle Optical Track Sensor PixArt Imaging Inc. http://www.pixart.com All rights reserved. Any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. Version 1.02 |12 Jul 2016 | 21001EN Pin No. Signal Name Type Description Functional Group: Functional I/O

16 MOTION Output Motion detect output (Active low)

17 NRESET Input Chip reset (Active low)

19 XY_LED Input LED control, must connect to LED-

Functional Group: Special Function Pin

2 NC NC No connection (float)

5 NC NC No connection (float)

6 NC NC No connection (float)

8 NC NC No connection (float)

9 NC NC No connection (float)

10 NC NC No connection (float)

12 NC NC No connection (float)

13 NC NC No connection (float)

14 NC NC No connection (float)

15 NC NC No connection (float)

18 NC NC No connection (float)

23 NC NC No connection (float)

29* GND Ground Paddle Bottom of QFN package must be connected to circuit ground

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2.1 Regulatory Requirements

2.2 Absolute Maximum Ratings

Table 2. Absolute Maximum Ratings

  1. Maximum Ratings are those values beyond which damage to the device may occur.
  2. Exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. Functional

operation under absolute maximum-rated conditions is not implied.

  1. Functional operation should be restricted to the Recommended Operating Conditions.

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2.3 Recommended Operating Conditions

Table 3. Recommended Operating Conditions Note: PixArt does not guarantee the performance if the operating temperature is beyond the specified limit.

2.4 DC Characteristics

Table 4. DC Electrical Specifications Internal Slow Clock = 1 kHz, TA = 25 °C.

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2.5 AC Characteristics

Table 5. AC Electrical Specifications

  1. All the parameters are tested under operating conditions: VDD = 1.8 V, TA = 25 °C.
  2. All values referred to VIHmin and VILmax levels.
  3. A device must internally provide a hold time of at least 300 ns for the SDA signal (referred to the VIHmin of the SCL

signal) to bridge the undefined region of the falling edge of SCL.

  1. Cb = Total capacitance of one bus line in pF.

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3.1 Package Marking

Refer to Figure 2. Pin Configuration for the code marking location on the device package. Table 6. Code Identification

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3.2 Package Outline Drawing

prevent damage and/or degradation which may be induced by ESD. Figure 3. Package Outline Drawing

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3.3 Assembly Drawings

Figure 4. Assembly Drawing

All rights reserved. Any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. Figure 5. Exploded View of System Assembly

All rights reserved. Any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. Note: Bottom center pad of QFN package must be connected to circuit ground. Figure 6. Recommended PCB Layout

All rights reserved. Any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission. Figure 7. Lens Assembly Outline Drawing

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3.4 Area Of Interest (AOI)

and should be centered with reference to the optical center. Refer below figure for illustration. Figure 8. Area Of Interest

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4.1 Reference Schematic

there are existing pull-up resistors on these pins at the MCU side. Figure 9. PMT9123 Reference Schematics

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8.1 Registers List

Table 7. Register List

8.2 Performance Optimization Registers

regards to these register’s descriptions. Table 8. Performance Optimization Registers