CY8C20X66 Datasheet, PDF (9/34 Pages) Cypress Semiconductor – CapSense™ Applications

CY8C20x46, CY8C20x66
24-Pin Part Pinout
Table 3. 24-Pin QFN Part Pinout^{(2, 3)}
Pin
No.
Type
Digital Analog
Name
Description
1
IO
I
P2[5] Crystal output (XOut).
2
IO
I
P2[3] Crystal input (XIn).
3
IO
I
P2[1]
4
IOHR
I
P1[7] I2C SCL, SPI SS.
5
IOHR
I
P1[5] I2C SDA, SPI MISO.
6
IOHR
7
IOHR
I
P1[3] SPI CLK.
I
P1[1] ISSP CLK⁽¹⁾, I2C SCL, SPI
MOSI.
8
NC No connection.
9
Power
10 IOHR
I
Vss
P1[0]
Ground connection.
ISSP DATA⁽¹⁾, I2C SDA, SPI
CLK.
11 IOHR
I
P1[2]
12 IOHR
I
P1[4] Optional external clock input
(EXTCLK).
13 IOHR
I
P1[6]
14
Input
XRES Active high external reset with
internal pull down.
15
IO
I
P2[0]
16
IOH
I
P0[0]
17
IOH
I
P0[2]
18
IOH
I
P0[4]
19
IOH
I
P0[6]
20
Power
Vdd Supply voltage.
21
IOH
I
P0[7]
22
IOH
I
P0[5]
23
IOH
I
P0[3] Integrating input.
24
IOH
I
P0[1] Integrating input.
CP
Power
Vss Center pad must be connected
to ground.
Figure 3. CY8C20346, CY8C20366 24-Pin PSoC Device
AI, XOut, P2[5]
AI, XIn, P2[3]
AI, P2[1]
AI, I2C SCL, SPI SS, P1[7]
AI, I2C SDA, SPI MISO, P1[5]
AI, SPI CLK, P1[3]
1
18
2
17
3 QFN 16
4 (Top View) 15
5
14
6
13
P0[4], AI
P0[2], AI
P0[0], AI
P2[0], AI
XRES
P1[6], AI
LEGEND A = Analog, I = Input, O = Output, OH = 5 mA High Output Drive, R = Regulated Output.
Note
3. The center pad (CP) on the QFN package must be connected to ground (Vss) for best mechanical, thermal, and electrical performance. If not connected to ground, it
should be electrically floated and not connected to any other signal.
Document Number: 001-12696 Rev. *C
Page 9 of 34
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