CY8C27143, CY8C27243

CY8C27443, CY8C27543

CY8C27643

Document Number: 38-12012 Rev. *T

Page 5 of 63

Additional System Resources

System resources, some of which have been previously listed,

provide additional capability useful to complete systems.

Additional resources include a multiplier, decimator, switch mode

pump, low voltage detection, and power on reset.

frequencies for use in applications. The clocks can be routed

to both the digital and analog systems. Additional clocks can

be generated using digital PSoC blocks as clock dividers.

32-bit accumulate, to assist in general math and digital filters.

signal processing applications including the creation of Delta

Sigma ADCs.

two wires. Slave, master, and multi-master modes are all

supported.

levels, while the advanced power-on reset (POR) circuit

eliminates the need for a system supervisor.

the analog system, including ADCs and DACs.

operating voltages from a single 1.2-V battery cell, providing a

low cost boost converter.

PSoC Device Characteristics

Depending on your PSoC device characteristics, the digital and analog systems can have 16, 8, or 4 digital blocks and 12, 6, or 4

analog blocks. The following table lists the resources available for specific PSoC device groups.The PSoC device covered by this

datasheet is highlighted in Table 1.

Table 1. PSoC Device Characteristics

PSoC Part

Number

Digital

I/O

Digital

Rows

Digital

Blocks

Analog

Inputs

Analog

Outputs

Analog

Columns

Analog

Blocks

SRAM

Size

Flash

Size

CY8C29x66

up to 64

4

16

up to 12

4

4

12

2 K

32 K

CY8C28xxx

up to 44

up to 3

up to 12

up to 44

up to 4

up to 6

up to

12 + 4[1]

1 K

16 K

CY8C27x43

up to 44

2

8

up to 12

4

4

12

256

16 K

CY8C24x94

up to 56

1

4

up to 48

2

2

6

1 K

16 K

CY8C24x23A

up to 24

1

4

up to 12

2

2

6

256

4 K

CY8C23x33

up to 26

1

4

up to 12

2

2

4

256

8 K

CY8C22x45

up to 38

2

8

up to 38

0

4

6[1]

1 K

16 K

CY8C21x45

up to 24

1

4

up to 24

0

4

6[1]

512

8 K

CY8C21x34

up to 28

1

4

up to 28

0

2

4[1]

512

8 K

CY8C21x23

up to 16

1

4

up to 8

0

2

4[1]

256

4 K

CY8C20x34

up to 28

0

0

up to 28

0

0

3[1, 2]

512

8 K

CY8C20xx6

up to 36

0

0

up to 36

0

0

3[1, 2]

up to 2 K

up to 32 K

Notes

1. Limited analog functionality.

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