CY8C21123, CY8C21223, CY8C21323

Document Number: 38-12022 Rev. *Q

Page 8 of 43

Pin Information

This section describes, lists, and illustrates the CY8C21x23 PSoC device pins and pinout configurations. Every port pin (labeled with

8-Pin Part Pinout

16-Pin Part Pinout

Table 2. Pin Definitions – CY8C21123 8-Pin SOIC

Pin

No.

Type

Pin

Name

Description

Figure 3. CY8C21123 8-Pin SOIC

Digital

Analog

1

I/O

I

P0[5]

Analog column mux input

2

I/O

I

P0[3]

Analog column mux input

3

I/O

P1[1]

4

Power

Ground connection

5

I/O

P1[0]

6

I/O

I

P0[2]

Analog column mux input

7

I/O

I

P0[4]

Analog column mux input

8

Power

Supply voltage

LEGEND: A = Analog, I = Input, and O = Output.

SOIC

1

2

3

4

8

7

6

5

P0[4], A, I

P0[2], A, I

P1[0], I2C SDA

A, I, P0[5]

A, I, P0[3]

I2C SCL, P1[1]

Table 3. Pin Definitions – CY8C21223 16-Pin SOIC

Pin

No.

Type

Pin

Name

Description

Figure 4. CY8C21223 16-Pin SOIC

Digital

Analog

1

I/O

I

P0[7]

Analog column mux input

2

I/O

I

P0[5]

Analog column mux input

3

I/O

I

P0[3]

Analog column mux input

4

I/O

I

P0[1]

Analog column mux input

5

Power

SMP

SMP connection to required external

components

6

Power

Ground connection

7

I/O

P1[1]

8

Power

Ground connection

9

I/O

P1[0]

10

I/O

P1[2]

11

I/O

P1[4]

Optional external clock input (EXTCLK)

12

I/O

I

P0[0]

Analog column mux input

13

I/O

I

P0[2]

Analog column mux input

14

I/O

I

P0[4]

Analog column mux input

15

I/O

I

P0[6]

Analog column mux input

16

Power

Supply voltage

LEGEND A = Analog, I = Input, and O = Output.

SOIC

P0[6], A, I

P0[4], A, I

P0[2], A, I

P0[0], A, I

P1[4], EXTCLK

P1[2]

P1[0], I2C SDA

16

15

14

13

12

11

1

2

3

4

5

6

7

8

A, I, P0[7]

A, I, P0[5]

A, I, P0[3]

A, I, P0[1]

SMP

I2C SCL, P1[1]

10

9

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