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CY8C20X36A/46A/66A/96A
Document Number: 001-54459 Rev. **
Page 11 of 38
32-Pin QFN
Table 5. Pin Definitions - CY8C20436A, CY8C20446A, CY8C20466A PSoC Device [2, 3]
Pin
No.
Type
Name
Description
Figure 5. CY8C20436A, CY8C20446A, CY8C20466A
PSoC Device
Digital
Analog
1
IOH
I
P0[1]
Integrating input
2
I/O
I
P2[7]
3
I/O
I
P2[5]
Crystal output (XOut)
4
I/O
I
P2[3]
Crystal input (XIn)
5
I/O
I
P2[1]
6
I/O
I
P3[3]
7
I/O
I
P3[1]
8
IOHR
I
P1[7]
I2C SCL, SPI SS
9
IOHR
I
P1[5]
I2C SDA, SPI MISO
10
IOHR
I
P1[3]
SPI CLK.
11
IOHR
I
P1[1]
ISSP CLK[1], I2C SCL, SPI MOSI.
12
Power
Vss
Ground connection.
13
IOHR
I
P1[0]
ISSP DATA[1], I2C SDA., SPI CLK
14
IOHR
I
P1[2]
15
IOHR
I
P1[4]
Optional external clock input
(EXTCLK)
16
IOHR
I
P1[6]
17
Input
XRES
Active high external reset with
internal pull down
18
I/O
I
P3[0]
19
I/O
I
P3[2]
20
I/O
I
P2[0]
21
I/O
I
P2[2]
22
I/O
I
P2[4]
23
I/O
I
P2[6]
24
IOH
I
P0[0]
25
IOH
I
P0[2]
26
IOH
I
P0[4]
27
IOH
I
P0[6]
28
Power
Vdd
Supply voltage
29
IOH
I
P0[7]
30
IOH
I
P0[5]
31
IOH
I
P0[3]
Integrating input
32
Power
Vss
Ground connection
CP
Power
Vss
Center pad must be connected to
ground
LEGEND A = Analog, I = Input, O = Output, OH = 5 mA High Output Drive, R = Regulated Output.
AI, P0[1]
AI, P2[7]
AI, XOut, P2[5]
AI, XIn, P2[3]
AI, P2[1]
AI, P3[3]
QFN
(Top View)
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
AI, P3[1]
AI, I2C SCL, SPI SS, P1[7]
P0[0], AI
P2[6], AI
P3[0], AI
XRES
P2[4], AI
P2[2], AI
P2[0], AI
P3[2], AI
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