CY8C20224, CY8C20324

CY8C20424, CY8C20524

Document Number: 001-41947 Rev. *L

Page 9 of 41

28-pin Part Pinout

Figure 5. CY8C20524 28-pin PSoC Device

Table 3. 28-pin Part Pinout (SSOP)

Pin No.

Digital

Analog

Name

Description

1

I/O

I

P0[7]

2

I/O

I

P0[5]

3

I/O

I

P0[3]

Integrating input

4

I/O

I

P0[1]

Integrating input

5

I/O

I

P2[7]

6

I/O

I

P2[5]

7

I/O

I

P2[3]

8

I/O

I

P2[1]

9

Power

Ground connection

10

I

P1[7]

11

I

P1[5]

12

I

P1[3]

SPI CLK

13

I

P1[1]

14

Power

Ground connection

15

I

P1[0]

16

I

P1[2]

17

I

P1[4]

Optional external clock input (EXTCLK)

18

I

P1[6]

19

Input

XRES

Active high external reset with internal pull-down

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

I/O

I

P0[0]

25

I/O

I

P0[2]

26

I/O

I

P0[4]

27

I/O

I

P0[6]

28

Power

Supply voltage

A = Analog, I = Input, O = Output, OH = 5 mA High Output Drive

Note

4. These are the ISSP pins, that are not high Z at POR (Power on reset). Refer the PSoC Programmable System-on-Chip Technical Reference Manual for details.