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CY8C20234, CY8C20334
CY8C20434, CY8C20534
Document Number: 001-05356 Rev. *H
Page 8 of 34
24-Pin Part Pinout
Figure 3. CY8C20334 24-Pin PSoC Device
QFN
(Top View)
AI, P2[5]
AI, I2C SCL, SPI SS, P1[7]
AI, I2C SDA, SPI MISO, P1[5]
AI, SPI CLK, P1[3]
1
2
3
4
5
6
18
17
16
15
14
13
P0[2], AI
P0[0], AI
P0[4], AI
AI, P2[3]
AI, P2[1]
P1[6], AI
XRES
P2[0], AI
Table 3. Pin Definitions - CY8C20334 24-Pin (QFN) [2]
Pin No.
Type
Name
Description
Digital
Analog
1
I/O
I
P2[5]
2
I/O
I
P2[3]
3
I/O
I
P2[1]
4
IOH
I
P1[7]
I2C SCL, SPI SS
5
IOH
I
P1[5]
I2C SDA, SPI MISO
6
IOH
I
P1[3]
SPI CLK
7
IOH
I
P1[1]
CLK[1], I2C SCL, SPI MOSI
8
NC
No Connection
9
Power
Vss
Ground Connection
10
IOH
I
P1[0]
DATA[1], I2C SDA
11
IOH
I
P1[2]
12
IOH
I
P1[4]
Optional External Clock Input (EXTCLK)
13
IOH
I
P1[6]
14
Input
XRES
Active High External Reset with Internal Pull Down
15
I/O
I
P2[0]
16
I/O
I
P0[0]
17
I/O
I
P0[2]
18
I/O
I
P0[4]
19
I/O
I
P0[6]
Analog Bypass
20
Power
Vdd
Supply Voltage
21
I/O
I
P0[7]
22
I/O
I
P0[5]
23
I/O
I
P0[3]
Integrating Input
24
I/O
I
P0[1]
CP
Power
Vss
Center Pad is connected to Ground
A = Analog, I = Input, O = Output, OH = 5 mA High Output Drive
Note
2. The center pad on the QFN package is connected to ground (Vss) for best mechanical, thermal, and electrical performance. If not connected to ground, it is electrically
floated and not connected to any other signal.
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