CY8CMBR2016-24LQXI Cypress Semiconductor, CY8CMBR2016-24LQXI Datasheet
CY8CMBR2016-24LQXI
Specifications of CY8CMBR2016-24LQXI
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CY8CMBR2016-24LQXI Summary of contents
Page 1
... FSS provides robust sensing even with closely spaced buttons. FSS is a critical requirement in small form factor applications. The CY8CMBR2016 provides three different host interface communication modes. These include the industry standard host interface protocols such as Key Scan Interface and Truth Table Interface ...
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... Contents Pinout ................................................................................ 3 Typical Circuits ................................................................. 4 Configuring the CY8CMBR2016 ...................................... 8 Device Features ................................................................ 8 CapSense Buttons ...................................................... 8 SmartSense Auto-Tuning ............................................ 8 Flanking Sensor Suppression (FSS) ........................... 8 Key Scan Interface ...................................................... 8 Truth Table Output .................................................... 10 Encoded 4-bit Output ................................................ 10 Buzzer Signal Output ................................................ 10 Interrupt Line ............................................................. 10 Button Auto Reset ..................................................... 10 Output Select ............................................................. 11 Scan Rate .................................................................. 11 Sensitivity .................................................................. 11 System Diagnostics ................................................... 11 Serial Debug Data Out ...
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... NC 44 CS5 45 CS4 46 INT 47 Vss C 48 MOD CY8CMBR2016 Figure 1. Device Pinout 36 OUT_6 35 OUT_4 34 OUT_2 33 OUT_0 32 CS6 CY8CMBR2016 31 CS7 (Top View) 30 CS10 CS11 29 28 CS14 27 CS15 26 XRES 25 SCAN DIO SCAN_2/TT_COL_2 - Output port interface pin 2 DO READ_0/TT_ROW_0/EO_0 - Output port interface pin 4 DO READ_0/TT_ROW_0/EO_2/FMEA_D ...
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... Typical Circuits Figure 2. Schematic 1: 16 Buttons with Key Scan Output Mode Host INT Document Number: 001-67921 Rev. *C CY8CMBR2016 INT Line X Mechanical Keypad SCAN_0 SCAN_1 SCAN_2 SCAN_3 READ_0 READ_1 READ_2 READ_3 Page ...
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... In Schematic 1, CY8CMBR2016 is configured as follows: 16 CapSense buttons ■ Key Scan Interface ■ Continuous scan mode ■ High sensitivity for all buttons ■ FSS enabled ■ Button Auto Reset disabled ■ Serial Debug Data Out disabled ■ DC buzzer output ■ Reset button ■ ...
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... Figure 3. Schematic 2: 16 Buttons with Truth Table Output Mode Document Number: 001-67921 Rev. *C CY8CMBR2016 Page ...
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... In Schematic 2, CY8CMBR2016 is configured as follows: 16 CapSense buttons ■ Truth Table Output configured to drive LEDs ■ Continuous Scan mode ■ High sensitivity for all buttons ■ FSS disabled ■ Button Auto Reset enable, with a period of 5 seconds ■ Serial Debug Data Out enabled ■ ...
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... Configuring the CY8CMBR2016 The CY8CMBR2016 device features are configured using external resistors. The resistors on the hardware configurable pins are determined by the device upon power-on. The on page 26 gives the matrix of features enabled using different external resistor configurations. Device Features Table 2. Device Feature List ...
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... Figure 4. Button Status with Respect to Finger Touch when FSS is Enabled Host Note 3. When finger moves from one button to other (FSS enabled). Document Number: 001-67921 Rev. *C Figure 5. Key Scan interface Retrofit X Mechanical Keypad Figure 6. SCAN Line Waveform Details CY8CMBR2016 [3] CY8CMBR2016 Page ...
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... Each button has its own code. ■ Only one button can be reported at a time using this interface. ■ Table 4 defines the decode table. ■ Document Number: 001-67921 Rev. *C CY8CMBR2016 Table 4. Encoded Output Keypress Detected By CapSense Key #1 Key #2 Key #3 Key #4 … ...
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... Device power consumption is dependent on Scan Rate. For a ■ higher scan rate, the power consumption is less, and vice versa. Refer to the CY8CMBR2016 Design for power calculations. Sensitivity Sensitivity is defined as the minimum change in capacitance ■ which can be detected as a finger touch. Use higher sensitivity setting when the overlay thickness is ■ ...
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... For more information on Raw Count, Baseline, Difference Count, and Parasitic Capacitance, refer section 2. CY8CMBR2016 Button CY8CMBR2016 shorting Button MOD 2.4 nF. MOD of < > connected, all buttons are disabled > ...
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... CS0_CP 18 0x00 CS1_CP 19 0x00 CS2_CP 20 0x00 CS3_CP 21 0x00 CS4_CP Table 6. Serial Data Output sent by CY8CMBR2016 BYTE DATA 0 0x0D Dummy variables for multi chart tool 1 0x0A 2 CS0_RC CS0 Raw counts, unsigned 16-bit integer 3 4 CS1_RC CS1 Raw counts, unsigned 16-bit integer ...
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... Table 6. Serial Data Output sent by CY8CMBR2016 (continued) BYTE DATA 32 CS15_RC CS15 Raw counts, unsigned 16-bit integer 33 34 0x00 – 35 FW_REV Firmware revision 36 0x00 – 37 CS0_CP Parasitic capacitance of CS0 38 0x00 – 39 CS1_CP Parasitic capacitance of CS1 40 0x00 – 41 CS2_CP Parasitic capacitance of CS2 42 0x00 – ...
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... Table 6. Serial Data Output sent by CY8CMBR2016 (continued) BYTE DATA 121 CS15_ DIFF CS15 difference counts, unsigned 16-bit integer 122 123 0x00 – 124 CS10_CP Parasitic capacitance of CS10 125 0x00 – 126 CS11_CP Parasitic capacitance of CS11 127 0x00 – 128 CS12_CP Parasitic capacitance of CS12 ...
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... Traces should be routed on the non sensor side. If any non CapSense trace crosses CapSense trace, ensure that intersection is orthogonal. – – Via should be placed near the edge of the button to reduce trace length thereby increasing sensitivity. 10 mil – – CY8CMBR2016 for the device to go into deep DD Recommendations/Remarks Page ...
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... Adhesive should be non conductive and dielectrically homogenous. – 467 MP and 468 MP adhesives made are recommended. – Standard board thickness for CapSense FR4 based designs is 1.6 mm. Figure 16. CapSense Button Shapes Figure 17. Button Layout Design Layout Guidelines and Best Practices on page CY8CMBR2016 Recommendations/Remarks 16) Page ...
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... Y: Button to button clearance (Refer to Document Number: 001-67921 Rev. *C Layout Guidelines and Best Practices on page Figure 18. Recommended via Hole Placement CY8CMBR2016 16) Page ...
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... Sample Layout Document Number: 001-67921 Rev. *C Figure 19. Top Layer CY8CMBR2016 Page ...
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... Document Number: 001-67921 Rev. *C Figure 20. Bottom Layer CY8CMBR2016 Page ...
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... V , the rate at which CY8CMBR2016 Unit Notes °C Higher storage temperatures reduce data retention time. Recommended storage temperature is +25 °C ± 25 °C. Extended duration storage temperatures above 85 °C degrade reliability. V – V – ...
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... DD V – 0.5 – – DD – – 0.4 – – 0.30 × 0.65 × V – – DD CY8CMBR2016 85 °C, respectively. Typical A Notes I < 10 µA, Maximum of 40 µA source in OH all I/ mA, Maximum source in all OH I/ mA, Maximum source in OH all I/ mA/pin, V > ...
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... P F 0.25 – )< 0.5 1 2.2 2.4 nF – 560 616 CY8CMBR2016 Notes has reached DD Notes V = 3.0 to 3.6 V, 10%–90 3.0 to 3.6 V, 10%–90 1.71 to 3.0 V, 10%–90 1.71 to 3.0 V, 10%–90 3.0 to 3.6 V, 90%–10 1.71 to 3.0 V, 90%–10% DD Notes C is the total capacitance seen P by the pin when no finger is present ...
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... Higher temperatures may be required based on the solder melting point. Typical temperatures for solder are 220 ± 5 °C with Sn-Pb or 245 ± 5 °C with Sn-Ag-Cu paste. Refer to the solder manufacturer specifications Document Number: 001-67921 Rev. *C [9] Maximum Peak Temperature 260 °C Figure 21. 48-pin (6 × 6 × 0.6 mm) QFN CY8CMBR2016 [7] Typical θ °C/W Time at Max Temperature 30 s ...
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... Ordering Information Ordering Code CY8CMBR2016-24LQXI 48-pin (6 × 6 × 0.6 mm) QFN CY8CMBR2016-24LQXIT 48-pin (6 × 6 × 0.6 mm) QFN (Tape and Reel) Ordering Code Definitions MBR 2016 24 LQX - Notes 10. 16 CapSense input + 1 C pin MOD 11. 8 Configurable GPIOs + 1 buzzer output + 1 Sleep line + 1 Interrupt line + 1 Debug line + 5 configuration pins Document Number: 001-67921 Rev ...
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... VDD / Floating Ground 1.5 kΩ (±5%) to ground VDD / Floating Ground 1.5 kΩ (±5%) to ground 5 kΩ (±5%) to ground VDD / Floating Ground 1.5 kΩ (±5%) to ground VDD / Floating Ground VDD CY8CMBR2016 Device Pin Name FSS ARST OUT_SEL SCAN SENSITIVITY SLEEP Page ...
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... KeyScan Interface - ‘x’th Scan line SNR signal-to-noise ratio TT_COL_x Truth Table Column output - ‘x’th Column TT_ROW_x Truth Table Row output - ‘x’th Row Document Number: 001-67921 Rev. *C CY8CMBR2016 Document Conventions Units of Measure Symbol Unit of Measure °C degree Celsius ...
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... Document History Page Document Title: CY8CMBR2016, CapSense Document Number: 001-67921 Orig. of Revision ECN Change ** 3202566 MSUR *A 3387102 MSUR *B 3473096 MSUR *C 3633927 UDYG Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office ...