Cypress CapSense CY8C20396 Specification Sheet page 12

48-Pin QFN
Table 6. Pin Definitions - CY8C20666 PSoC Device
Pin
Name
No.
1 NC No connection
2 IO I P2[7]
3 IO I P2[5] Crystal output (XOut)
4 IO I P2[3] Crystal input (XIn)
5 IO I P2[1]
6 IO I P4[3]
7 IO I P4[1]
8 IO I P3[7]
9 IO I P3[5]
10 IO I P3[3]
11 IO I P3[1]
12 IOHR I P1[7] I2C SCL, SPI SS
13 IOHR I P1[5] I2C SDA, SPI MISO
14 NC No connection
15 NC No connection
16 IOHR I P1[3] SPI CLK
17 IOHR I P1[1] ISSP CLK
18 Power Vss Ground connection
19 IO D+
20 IO D-
21 Power Vdd Supply voltage
22 IOHR I P1[0] ISSP DATA
23 IOHR I P1[2]
24 IOHR I P1[4] Optional external clock input
(EXTCLK)
25 IOHR I P1[6]
26 Input XRES Active high external reset with
internal pull down
27 IO I P3[0]
28 IO I P3[2]
29 IO I P3[4]
30 IO I P3[6]
31 IO I P4[0]
32 IO I P4[2]
33 IO I P2[0]
34 IO I P2[2]
35 IO I P2[4]
36 IO I P2[6]
37 IOH I P0[0]
38 IOH I P0[2]
39 IOH I P0[4]
LEGEND A = Analog, I = Input, O = Output, NC = No Connection H = 5 mA High Output Drive, R = Regulated Output.
Document Number: 001-12696 Rev. *D
[2, 3]
Description
AI, I2C SCL, SPI SS, P1[7]
[1]
, I2C SCL, SPI MOSI
[1]
, I2C SDA, SPI CLK
Pin
No.
40 IOH
41
42
43
44 IOH
45 IOH
46 IOH
47
48 IOH
CP
CY8C20x36/46/66, CY8C20396
Figure 6. CY8C20666 PSoC Device
1
NC
2
AI , P2[7]
AI, XOut, P2[5] 3
4
AI, XIn , P2[3]
5
AI , P2[1]
QFN
6
AI, P4[3]
7
AI, P4[1] (Top View)
AI, P3[7] 8
9
AI, P3[5]
10
AI, P3[3]
AI, P3[1] 11
12
Name
I P0[6]
Power Vdd Supply voltage
NC No connection
NC No connection
I P0[7]
I P0[5]
I P0[3] Integrating input
Power Vss Ground connection
I P0[1]
Power Vss Center pad must be connected to ground
36
P2[6], AI
35
P2[4], AI
34
P2[2], AI
33
P2[0], AI
32
P4[2], AI
31
P4[0], AI
30
P3[6], AI
29
P3[4], AI
28
P3[2], AI
27
P3[0 ], AI
26
XRES
25
P1[6], AI
Description
Page 12 of 34
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