8-bit Microcontrollers - MCU

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PSOC™ (Programmable System-on-Chip)

Infineon Technologies PSOC™ (Programmable System-on-Chip) is a programmable embedded design platform that integrates discrete analog and programmable logic, memory, and a microcontroller. Easy-to-use software tools, like the PSOC Creator Integrated Design Environment, simplify the design and debugging of analog front ends and digital glue logic while accelerating complete system designs. The PSOC comes in four MCU options for 8-bit and 32-bit applications, ranging from the cost-optimized 8-bit M8C to the high-performance ARM Cortex-M3.

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Part #

8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V

CY8C3245LTI-144
Infineon Technologies
1: $10.04
195In Stock

Mfr. Part No.
CY8C3245LTI-144

Mouser Part No
727-CY8C3245LTI-144

Infineon Technologies

8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V

Learn More

Datasheet

195In Stock

$10.04

$7.82

$7.27

$6.66

View

Min.: 1
Mult.: 1

8051

32 kB

4 kB

QFN-48

50 MHz

12 bit

31 I/O

1.71 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C3245

Tray

8-bit Microcontrollers - MCU IC MCU 4K FLASH 256B SRAM

CY8C24123A-24SXI
Infineon Technologies
1: $4.42
10,028In Stock

Mfr. Part No.
CY8C24123A-24SXI

Mouser Part No
727-CY8C24123A-24SXI

Infineon Technologies

8-bit Microcontrollers - MCU IC MCU 4K FLASH 256B SRAM

Learn More

Datasheet

10,028In Stock

$4.42

$3.35

$2.79

$2.68

View

Min.: 1
Mult.: 1

M8C

4 kB

256 B

SOIC-8

24 MHz

14 bit

6 I/O

2.4 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C24x23A

Tube

8-bit Microcontrollers - MCU IC MCU 16K FLASH 256B SRAM

CY8C27243-24PVXI
Infineon Technologies
1: $11.40
2,378In Stock

Mfr. Part No.
CY8C27243-24PVXI

Mouser Part No
727-CY8C27243-24PVXI

Infineon Technologies

8-bit Microcontrollers - MCU IC MCU 16K FLASH 256B SRAM

Learn More

Datasheet

2,378In Stock

$11.40

$8.93

$7.80

$7.52

View

Min.: 1
Mult.: 1

M8C

16 kB

256 B

SSOP-20

24 MHz

14 bit

16 I/O

3 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C27243

Tube

8-bit Microcontrollers - MCU PSoC 32KB FLASH 1.7-5.5V 25 I/O

CY8C3245LTI-139T
Infineon Technologies
1: $10.93
2,655In Stock

Mfr. Part No.
CY8C3245LTI-139T

Mouser Part No
727-CY8C3245LTI-139T

Infineon Technologies

8-bit Microcontrollers - MCU PSoC 32KB FLASH 1.7-5.5V 25 I/O

Learn More

Datasheet

2,655In Stock

Cut Tape

$10.93

$8.45

$8.06

$7.00

View

Reel

$6.12

Min.: 1
Mult.: 1

: 2,000

8051

QFN-48

SMD/SMT

8 bit

CY8C3245

Reel, Cut Tape

8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V

CY8C3446LTI-073
Infineon Technologies
1: $14.51
2,600In Stock

Mfr. Part No.
CY8C3446LTI-073

Mouser Part No
727-CY8C3446LTI-073

Infineon Technologies

8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V

Learn More

Datasheet

2,600In Stock

$14.51

$11.83

$10.57

$10.17

View

Min.: 1
Mult.: 1

8051

64 kB

8 kB

QFN-48

50 MHz

12 bit

31 I/O

1.71 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C3446

Tray

8-bit Microcontrollers - MCU 1.71V-5.5V CapSense Plus

CY8C20396A-24LQXI
Infineon Technologies
1: $9.21
628In Stock

Mfr. Part No.
CY8C20396A-24LQXI

Mouser Part No
727-CY8C20396A24LQXI

Infineon Technologies

8-bit Microcontrollers - MCU 1.71V-5.5V CapSense Plus

Learn More

Datasheet

628In Stock

$9.21

$6.91

$6.59

$5.72

View

Min.: 1
Mult.: 1

M8C

16 kB

2 kB

QFN-24

24 MHz

10 bit

19 I/O

1.71 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C20xx6A

Tray

8-bit Microcontrollers - MCU IC MCU 8K FLASH 512B SRAM

CY8C21334-24PVXI
Infineon Technologies
1: $6.60
776In Stock
3,300Expected 24/09/2026

Mfr. Part No.
CY8C21334-24PVXI

Mouser Part No
727-CY8C21334-24PVXI

Infineon Technologies

8-bit Microcontrollers - MCU IC MCU 8K FLASH 512B SRAM

Learn More

Datasheet

776In Stock

3,300Expected 24/09/2026

$6.60

$5.07

$4.37

$4.20

View

Min.: 1
Mult.: 1

M8C

8 kB

512 B

SSOP-20

24 MHz

10 bit

16 I/O

2.4 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C21x34

Tube

8-bit Microcontrollers - MCU PSoC, 28I/O, 8K Fsh 512 bytes RAM

CY8C21434-24LTXI
Infineon Technologies
1: $6.66
2,952In Stock

Mfr. Part No.
CY8C21434-24LTXI

Mouser Part No
727-CY8C21434-24LTXI

Infineon Technologies

8-bit Microcontrollers - MCU PSoC, 28I/O, 8K Fsh 512 bytes RAM

Learn More

Datasheet

2,952In Stock

$6.66

$5.05

$4.81

$4.35

View

Min.: 1
Mult.: 1

M8C

8 kB

512 B

QFN-32

24 MHz

10 bit

28 I/O

2.4 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C21x34

Tray

8-bit Microcontrollers - MCU PSoC, 28I/O, 8K Fsh 512 bytes RAM

CY8C21434-24LTXIT
Infineon Technologies
1: $7.49
559In Stock

Mfr. Part No.
CY8C21434-24LTXIT

Mouser Part No
727-CY8C2143424LTXIT

Infineon Technologies

8-bit Microcontrollers - MCU PSoC, 28I/O, 8K Fsh 512 bytes RAM

Learn More

Datasheet

559In Stock

Cut Tape

$7.49

$5.77

$5.07

$4.86

View

Reel

$3.93

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

M8C

8 kB

512 B

QFN-32

24 MHz

10 bit

28 I/O

2.4 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C21x34

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU IC MCU 8K FLASH 512B SRAM

CY8C21534-24PVXI
Infineon Technologies
1: $6.54
1,009In Stock

Mfr. Part No.
CY8C21534-24PVXI

Mouser Part No
727-CY8C21534-24PVXI

Infineon Technologies

8-bit Microcontrollers - MCU IC MCU 8K FLASH 512B SRAM

Learn More

Datasheet

1,009In Stock

$6.54

$5.03

$4.44

$4.01

View

Min.: 1
Mult.: 1

M8C

8 kB

512 B

SSOP-28

24 MHz

10 bit

24 I/O

2.4 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C21x34

Tube

8-bit Microcontrollers - MCU 0.75 MHz to 24 MHz 33 I/O

CY8C20636A-24LTXIT
Infineon Technologies
1: $7.56
1,297In Stock

Mfr. Part No.
CY8C20636A-24LTXIT

Mouser Part No
727-CY8C236A24LTXIT

Infineon Technologies

8-bit Microcontrollers - MCU 0.75 MHz to 24 MHz 33 I/O

Learn More

Datasheet

1,297In Stock

Cut Tape

$7.56

$5.56

$5.18

$4.55

View

Reel

$3.23

Min.: 1
Mult.: 1

: 2,000

M8C

8 kB

1 kB

QFN-48

24 MHz

10 bit

36 I/O

1.71 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C20xx6A

Reel, Cut Tape

8-bit Microcontrollers - MCU 16K Flash 1K SRAM PSoC 1

CY8C24794-24LTXI
Infineon Technologies
1: $9.66
780In Stock

Mfr. Part No.
CY8C24794-24LTXI

Mouser Part No
727-CY8C24794-24LTXI

Infineon Technologies

8-bit Microcontrollers - MCU 16K Flash 1K SRAM PSoC 1

Learn More

Datasheet

780In Stock

$9.66

$7.51

$6.65

$6.38

View

Min.: 1
Mult.: 1

M8C

16 kB

1 kB

QFN-56

24 MHz

14 bit

50 I/O

3 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C24x94

Tray

8-bit Microcontrollers - MCU IC MCU 16K FLASH 1K SRAM

CY8C24894-24LTXI
Infineon Technologies
1: $9.45
917In Stock

Mfr. Part No.
CY8C24894-24LTXI

Mouser Part No
727-CY8C2489424LTXI

Infineon Technologies

8-bit Microcontrollers - MCU IC MCU 16K FLASH 1K SRAM

Learn More

Datasheet

917In Stock

$9.45

$7.36

$6.83

$6.25

View

Min.: 1
Mult.: 1

M8C

16 kB

1 kB

QFN-56

24 MHz

14 bit

49 I/O

3 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C24x94

Tray

8-bit Microcontrollers - MCU 16K FlSh 256B RAM IND

CY8C27243-24PVXIT
Infineon Technologies
1: $11.84
1,759In Stock

Mfr. Part No.
CY8C27243-24PVXIT

Mouser Part No
727-CY8C2724324PVXIT

Infineon Technologies

8-bit Microcontrollers - MCU 16K FlSh 256B RAM IND

Learn More

Datasheet

1,759In Stock

Cut Tape

$11.84

$9.27

$8.24

$7.92

View

Reel

$6.69

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

M8C

16 kB

256 B

SSOP-20

24 MHz

14 bit

16 I/O

3 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C2724

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU IC MCU 16K FLSH 256B SRAM

CY8C27443-24SXI
Infineon Technologies
1: $11.20
533In Stock

Mfr. Part No.
CY8C27443-24SXI

Mouser Part No
727-CY8C27443-24SXI

Infineon Technologies

8-bit Microcontrollers - MCU IC MCU 16K FLSH 256B SRAM

Learn More

Datasheet

533In Stock

$11.20

$8.91

$8.47

$7.62

View

Min.: 1
Mult.: 1

M8C

16 kB

256 B

SOIC-28

24 MHz

14 bit

24 I/O

3 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C27443

Tube

8-bit Microcontrollers - MCU 16K FlSh 256B RAM IND

CY8C27443-24SXIT
Infineon Technologies
1: $12.28
406In Stock

Mfr. Part No.
CY8C27443-24SXIT

Mouser Part No
727-CY8C2744324SXIT

Infineon Technologies

8-bit Microcontrollers - MCU 16K FlSh 256B RAM IND

Learn More

Datasheet

406In Stock

Cut Tape

$12.28

$9.62

$8.56

$8.23

View

Reel

$7.05

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

M8C

16 kB

256 B

24 MHz

14 bit

24 I/O

3 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C27443

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU 16K Flash 1K SRAM PSoC 1

CY8C28243-24PVXI
Infineon Technologies
1: $11.33
864In Stock

Mfr. Part No.
CY8C28243-24PVXI

Mouser Part No
727-CY8C2824324PVXI

Infineon Technologies

8-bit Microcontrollers - MCU 16K Flash 1K SRAM PSoC 1

Learn More

Datasheet

864In Stock

$11.33

$8.86

$7.74

$7.03

View

Min.: 1
Mult.: 1

M8C

16 kB

1 kB

SSOP-20

24 MHz

10 bit

16 I/O

2.4 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C28243

Tube

8-bit Microcontrollers - MCU IC MCU 32K FLASH 2K SRAM

CY8C29466-24SXI
Infineon Technologies
1: $16.72
979In Stock

Mfr. Part No.
CY8C29466-24SXI

Mouser Part No
727-CY8C29466-24SXI

Infineon Technologies

8-bit Microcontrollers - MCU IC MCU 32K FLASH 2K SRAM

Learn More

Datasheet

979In Stock

$16.72

$14.54

$12.14

$11.39

View

Min.: 1
Mult.: 1

M8C

32 kB

2 kB

SOIC-28

24 MHz

14 bit

24 I/O

3 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C29466

Tube

8-bit Microcontrollers - MCU 24 I/O 32K Flash 2K bytes RAM

CY8C29466-24PVXIT
Infineon Technologies
1: $15.27
1,107In Stock

Mfr. Part No.
CY8C29466-24PVXIT

Mouser Part No
727-CY8C2946624PVXIT

Infineon Technologies

8-bit Microcontrollers - MCU 24 I/O 32K Flash 2K bytes RAM

Learn More

Datasheet

1,107In Stock

Cut Tape

$15.27

$12.07

$11.27

$10.39

View

Reel

$9.41

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

M8C

32 kB

2 kB

SSOP-28

24 MHz

14 bit

24 I/O

3 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C29466

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V

CY8C3245LTI-139
Infineon Technologies
1: $9.64
449In Stock

Mfr. Part No.
CY8C3245LTI-139

Mouser Part No
727-CY8C3245LTI-139

Infineon Technologies

8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V

Learn More

Datasheet

449In Stock

$9.64

$7.50

$6.64

$6.37

View

Min.: 1
Mult.: 1

8051

32 kB

4 kB

QFN-48

50 MHz

12 bit

29 I/O

1.71 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C3245

Tray

8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V

CY8C3245LTI-163
Infineon Technologies
1: $9.75
733In Stock

Mfr. Part No.
CY8C3245LTI-163

Mouser Part No
727-CY8C3245LTI-163

Infineon Technologies

8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V

Learn More

Datasheet

733In Stock

$9.75

$7.59

$6.72

$6.45

View

Min.: 1
Mult.: 1

8051

32 kB

4 kB

QFN-68

50 MHz

12 bit

46 I/O

1.71 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C3245

Tray

8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V

CY8C3246PVI-147
Infineon Technologies
1: $11.99
371In Stock

Mfr. Part No.
CY8C3246PVI-147

Mouser Part No
727-CY8C3246PVI-147

Infineon Technologies

8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V

Learn More

Datasheet

371In Stock

$11.99

$11.30

$8.26

$7.95

View

Min.: 1
Mult.: 1

8051

64 kB

8 kB

SSOP-48

50 MHz

12 bit

31 I/O

1.71 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C3246

Tube

8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V

CY8C3666LTI-027
Infineon Technologies
1: $22.56
147In Stock

Mfr. Part No.
CY8C3666LTI-027

Mouser Part No
727-CY8C3666LTI-027

Infineon Technologies

8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V

Learn More

Datasheet

147In Stock

$22.56

$18.03

$16.22

$16.15

View

Min.: 1
Mult.: 1

8051

64 kB

8 kB

QFN-68

67 MHz

12 bit

28 I/O

1.71 V

1.89 V

SMD/SMT

8 bit

+ 85 C

CY8C3666

Tray

8-bit Microcontrollers - MCU 32K Flash 4K SRAM 8bit 67 MHz

CY8C3666LTI-203
Infineon Technologies
1: $16.20
1,122In Stock

Mfr. Part No.
CY8C3666LTI-203

Mouser Part No
727-CY8C3666LTI-203

Infineon Technologies

8-bit Microcontrollers - MCU 32K Flash 4K SRAM 8bit 67 MHz

Learn More

Datasheet

1,122In Stock

$16.20

$12.83

$11.99

$11.06

View

Min.: 1
Mult.: 1

8051

64 kB

8 kB

QFN-68

67 MHz

12 bit

46 I/O

1.71 V

1.89 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C3666

Tray

8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V

CY8C3866AXI-040
Infineon Technologies
1: $27.58
307In Stock

Mfr. Part No.
CY8C3866AXI-040

Mouser Part No
727-CY8C3866AXI-040

Infineon Technologies

8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V

Learn More

Datasheet

307In Stock

$27.58

$21.88

$20.61

$18.62

View

Min.: 1
Mult.: 1

8051

64 kB

8 kB

TQFP-100

67 MHz

20 bit

72 I/O

1.71 V

1.89 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C3866

Tray

PSOC™ (Programmable System-on-Chip)

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6 I/O
12 I/O
13 I/O
14 I/O
16 I/O
19 I/O
20 I/O
24 I/O
25 I/O
26 I/O
28 I/O
29 I/O
31 I/O
34 I/O
36 I/O
38 I/O
40 I/O
44 I/O
46 I/O
48 I/O

CY8C20234
CY8C20xx6A
CY8C21x34
CY8C21x45
CY8C22xxx
CY8C23x33
CY8C24x23A
CY8C24x94
CY8C2724
CY8C27243
CY8C27443
CY8C27543
CY8C27643
CY8C28243
CY8C28413
CY8C28445
CY8C28452
CY8C28645
CY8C29466
CY8C29566