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CY8C20247S-24SXI Datasheet(PDF) 8 Page - Cypress Semiconductor

Part # CY8C20247S-24SXI
Description  1.8 V CapSense짰 Controller with SmartSense??Auto-tuning 31 Buttons, 6 Sliders, Proximity Sensors
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CY8C20247S-24SXI Datasheet(HTML) 8 Page - Cypress Semiconductor

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CY8C20xx7/S
Document Number: 001-69257 Rev. *I
Page 8 of 43
16-pin QFN (10 Sensing Inputs)[7]
Table 2. Pin Definitions – CY8C20237, CY8C20247/S [8]
Pin
No.
Type
Name
Description
Figure 3. CY8C20237, CY8C20247/S Device
Digital
Analog
1
I/O
I
P2[5] Crystal output (XOut)
2
I/O
I
P2[3] Crystal input (XIn)
3
IOHR
I
P1[7] I2C SCL, SPI SS
4
IOHR
I
P1[5] I2C SDA, SPI MISO
5
IOHR
I
P1[3] SPI CLK
6
IOHR
I
P1[1] ISSP CLK[9], I2C SCL, SPI
MOSI
7
Power
VSS Ground connection
8
IOHR
I
P1[0] ISSP DATA[9], I2C SDA, SPI
CLK[10]
9
IOHR
I
P1[2] Driven Shield Output (optional)
10
IOHR
I
P1[4] Optional external clock
(EXTCLK)
11
Input
XRES Active high external reset with
internal pull-down
12
IOH
I
P0[4]
13
Power
VDD Supply voltage
14
IOH
I
P0[7]
15
IOH
I
P0[3] Integrating input
16
IOH
I
P0[1] Integrating input
LEGEND
A = Analog, I = Input, O = Output, OH = 5 mA High Output Drive, R = Regulated Output.
QFN
(Top View)
AI, XOut, P2[5]
AI, I2 C SCL, SPI SS, P1[7]
AI, I2 C SDA, SPI MISO, P1[5]
1
2
3
4
11
10
9
P0[4] , AI
P1[2] , AI
AI , XIn, P2[3]
P1[4] , EXTCLK, AI
XRES
12
Notes
7. No center pad.
8. 13 GPIOs = 10 pins for capacitive sensing+2 pins for I2C + 1 pin for modulator capacitor.
9. On power-up, the SDA(P1[0]) drives a strong high for 256 sleep clock cycles and drives resistive low for the next 256 sleep clock cycles. The SCL(P1[1]) line drives
resistive low for 512 sleep clock cycles and both the pins transition to high impedance state. On reset, after XRES de-asserts, the SDA and the SCL lines drive
resistive low for 8 sleep clock cycles and transition to high impedance state. Hence, during power-up or reset event, P1[1] and P1[0] may disturb the I2C bus. Use
alternate pins if you encounter issues.
10. Alternate SPI clock.


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