.hide-partial { max-height: none; } .show-more { display: none; }

Embedded Processors & Controllers

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Embedded Processors & Controllers

List Images

Results: 5.723

Applied Filters:

Manufacturer = Multiple Values

Product Type

Mounting Style

Package/Case

Core

Data Bus Width

Maximum Clock Frequency

Program Memory Size

L1 Cache Instruction Memory

L1 Cache Data Memory

Data RAM Size

ADC Resolution

Number of I/Os

Minimum Operating Temperature

Maximum Operating Temperature

Qualification

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

ARM Microcontrollers - MCU 32-bit Power Architecture MCU for Automotive Chassis and Safety Applications

SPC560P54L3BEABR
STMicroelectronics
1: 70,12 kr.
1.000In Stock

Mfr. Part No.
SPC560P54L3BEABR

Mouser Part No
511-SPC560P54L3BEABR

STMicroelectronics

ARM Microcontrollers - MCU 32-bit Power Architecture MCU for Automotive Chassis and Safety Applications

Datasheet

1.000In Stock

Cut Tape

70,12 kr.

54,23 kr.

51,70 kr.

44,91 kr.

View

Reel

33,79 kr.

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

ARM Microcontrollers - MCU

LQFP-100

AEC-Q100

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0 Low-volt line 1,8V MCU 32 Kbytes of Flash 48 MHz CPU, U

STM32F038G6U6
STMicroelectronics
1: 18,13 kr.
2.740In Stock

Mfr. Part No.
STM32F038G6U6

Mouser Part No
511-STM32F038G6U6

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0 Low-volt line 1,8V MCU 32 Kbytes of Flash 48 MHz CPU, U

Learn More

Datasheet

2.740In Stock

18,13 kr.

13,50 kr.

12,38 kr.

11,19 kr.

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

UFQFPN-28

ARM Cortex M0

32 bit

48 MHz

32 kB

4 kB

12 bit

22 I/O

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU 32BIT Cortex M3 L/D PERF LINE USB CAN

STM32F103R4H6A
STMicroelectronics
1: 28,20 kr.
3.834In Stock

Mfr. Part No.
STM32F103R4H6A

Mouser Part No
511-STM32F103R4H6A

STMicroelectronics

ARM Microcontrollers - MCU 32BIT Cortex M3 L/D PERF LINE USB CAN

Learn More

Datasheet

3.834In Stock

28,20 kr.

26,48 kr.

26,11 kr.

25,66 kr.

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

BGA-64

ARM Cortex M3

32 bit

72 MHz

16 kB

6 kB

12 bit

51 I/O

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU Ultra-low-power dual core MCU 64 MHz Cortex-M0+ 32MHz 256 Kbyte Bluetooth LE 5.0

STM32WB55VCQ6
STMicroelectronics
1: 54,91 kr.
2.435In Stock

Mfr. Part No.
STM32WB55VCQ6

Mouser Part No
511-STM32WB55VCQ6

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power dual core MCU 64 MHz Cortex-M0+ 32MHz 256 Kbyte Bluetooth LE 5.0

Learn More

Datasheet

2.435In Stock

54,91 kr.

42,60 kr.

39,46 kr.

36,11 kr.

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

UFBGA-129

Tray

8-bit Microcontrollers - MCU 8-Bit UL PWR MCU 8Kbytes -40 to 85

STM8L101G3U6
STMicroelectronics
1: 12,09 kr.
2.310In Stock

Mfr. Part No.
STM8L101G3U6

Mouser Part No
511-STM8L101G3U6

STMicroelectronics

8-bit Microcontrollers - MCU 8-Bit UL PWR MCU 8Kbytes -40 to 85

Learn More

Datasheet

2.310In Stock

12,09 kr.

8,95 kr.

8,06 kr.

7,25 kr.

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

QFPN-28

STM8

8 bit

16 MHz

8 kB

1.5 kB

No ADC

26 I/O

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU STM8L Ultra LP 8-Bit 32-Pin 16kB Flash

STM8L152K4U6
STMicroelectronics
1: 17,90 kr.
2.922In Stock

Mfr. Part No.
STM8L152K4U6

Mouser Part No
511-STM8L152K4U6

STMicroelectronics

8-bit Microcontrollers - MCU STM8L Ultra LP 8-Bit 32-Pin 16kB Flash

Learn More

Datasheet

2.922In Stock

17,90 kr.

13,43 kr.

12,23 kr.

10,97 kr.

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

STM8

8 bit

16 MHz

16 kB

2 kB

12 bit

29 I/O

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU 5V RANGE 8B MCU

ST72F324K4B6
STMicroelectronics
1: 56,92 kr.
432In Stock
Verify Status with Factory

Mfr. Part No.
ST72F324K4B6

Mouser Part No
511-ST72F324K4B6

Verify Status with Factory

STMicroelectronics

8-bit Microcontrollers - MCU 5V RANGE 8B MCU

Datasheet

432In Stock

56,92 kr.

42,67 kr.

40,73 kr.

35,36 kr.

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

Through Hole

SPDIP-32

ST7

8 bit

8 MHz

16 kB

512 B

10 bit

32 I/O

- 40 C

+ 85 C

Tube

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0 Access line MCU 16 Kbytes of Flash , 48 MHz CPU

STM32F031G4U7TR
STMicroelectronics
1: 18,28 kr.
2.133In Stock

Mfr. Part No.
STM32F031G4U7TR

Mouser Part No
511-STM32F031G4U7TR

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0 Access line MCU 16 Kbytes of Flash , 48 MHz CPU

Learn More

Datasheet

2.133In Stock

Cut Tape

18,28 kr.

13,65 kr.

12,53 kr.

11,26 kr.

Reel

9,33 kr.

View

MouseReel Available

Min.: 1
Mult.: 1

: 3.000

ARM Microcontrollers - MCU

SMD/SMT

UFQFPN-28

ARM Cortex M0

32 bit

48 MHz

16 kB

4 kB

12 bit

23 I/O

- 40 C

+ 105 C

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0 Access line MCU 16 Kbytes of Flash 48 MHz CPU, motor co

STM32F051C4U6
STMicroelectronics
1: 32,23 kr.
871In Stock

Mfr. Part No.
STM32F051C4U6

Mouser Part No
511-STM32F051C4U6

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0 Access line MCU 16 Kbytes of Flash 48 MHz CPU, motor co

Learn More

Datasheet

871In Stock

32,23 kr.

21,34 kr.

18,43 kr.

16,56 kr.

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

UFQFPN-48

ARM Cortex M0

32 bit

48 MHz

16 kB

8 kB

12 bit

39 I/O

- 40 C

+ 85 C

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0 Access line MCU 128 Kbytes of Flash 48 MHz CPU & CEC fu

STM32F071RBT7TR
STMicroelectronics
1: 34,76 kr.
991In Stock

Mfr. Part No.
STM32F071RBT7TR

Mouser Part No
511-STM32F071RBT7TR

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0 Access line MCU 128 Kbytes of Flash 48 MHz CPU & CEC fu

Learn More

Datasheet

991In Stock

Cut Tape

34,76 kr.

26,41 kr.

23,35 kr.

22,08 kr.

Reel

19,77 kr.

View

Min.: 1
Mult.: 1

: 1.000

ARM Microcontrollers - MCU

SMD/SMT

ARM Cortex M0

32 bit

48 MHz

128 kB

16 kB

12 bit

51 I/O

- 40 C

+ 105 C

Reel, Cut Tape

ARM Microcontrollers - MCU 32-Bit ARM Cortex 512 Kbyte Value Line

STM32F100RET6BTR
STMicroelectronics
1: 71,54 kr.
481In Stock

Mfr. Part No.
STM32F100RET6BTR

Mouser Part No
511-STM32F100RET6BTR

STMicroelectronics

ARM Microcontrollers - MCU 32-Bit ARM Cortex 512 Kbyte Value Line

Learn More

Datasheet

481In Stock

Cut Tape

71,54 kr.

55,28 kr.

52,52 kr.

45,73 kr.

Reel

35,51 kr.

View

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

ARM Microcontrollers - MCU

SMD/SMT

LQFP-64

ARM Cortex M3

32 bit

24 MHz

512 kB

32 kB

12 bit

51 I/O

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU ARM 32Bit Value Line 144-Pin 384kB Flash

STM32F100ZDT6B
STMicroelectronics
1: 44,61 kr.
717In Stock

Mfr. Part No.
STM32F100ZDT6B

Mouser Part No
511-STM32F100ZDT6B

STMicroelectronics

ARM Microcontrollers - MCU ARM 32Bit Value Line 144-Pin 384kB Flash

Learn More

Datasheet

717In Stock

44,61 kr.

42,60 kr.

42,22 kr.

41,25 kr.

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

LQFP-144

ARM Cortex M3

32 bit

24 MHz

384 kB

32 kB

12 bit

112 I/O

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU ARM 32Bit Value Line 144-Pin 512kB Flash

STM32F100ZET6B
STMicroelectronics
1: 69,90 kr.
356In Stock

Mfr. Part No.
STM32F100ZET6B

Mouser Part No
511-STM32F100ZET6B

STMicroelectronics

ARM Microcontrollers - MCU ARM 32Bit Value Line 144-Pin 512kB Flash

Learn More

Datasheet

356In Stock

69,90 kr.

54,68 kr.

47,97 kr.

46,18 kr.

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

LQFP-144

ARM Cortex M3

32 bit

24 MHz

512 kB

32 kB

12 bit

112 I/O

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU ARM Cortex M3 512kB 16 Timers ADC DAC

STM32F100ZET6BTR
STMicroelectronics
1: 79,60 kr.
370In Stock

Mfr. Part No.
STM32F100ZET6BTR

Mouser Part No
511-STM32F100ZET6BTR

STMicroelectronics

ARM Microcontrollers - MCU ARM Cortex M3 512kB 16 Timers ADC DAC

Learn More

Datasheet

370In Stock

Cut Tape

79,60 kr.

64,75 kr.

61,69 kr.

53,64 kr.

Reel

43,94 kr.

View

MouseReel Available

Min.: 1
Mult.: 1

: 500

ARM Microcontrollers - MCU

SMD/SMT

LQFP-144

ARM Cortex M3

32 bit

24 MHz

512 kB

32 kB

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU 32BIT Cortex M3 H/D ACCESS USB MCU

STM32F101ZDT6
STMicroelectronics
1: 79,82 kr.
357In Stock

Mfr. Part No.
STM32F101ZDT6

Mouser Part No
511-STM32F101ZDT6

STMicroelectronics

ARM Microcontrollers - MCU 32BIT Cortex M3 H/D ACCESS USB MCU

Learn More

Datasheet

357In Stock

79,82 kr.

64,83 kr.

61,84 kr.

53,71 kr.

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

LQFP-144

ARM Cortex M3

32 bit

36 MHz

384 kB

48 kB

12 bit

112 I/O

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU Ultra-Lo-pwr 8-bit MCU 16Kb

STM8L151C4U6TR
STMicroelectronics
1: 25,89 kr.
4.779In Stock

Mfr. Part No.
STM8L151C4U6TR

Mouser Part No
511-STM8L151C4U6TR

STMicroelectronics

8-bit Microcontrollers - MCU Ultra-Lo-pwr 8-bit MCU 16Kb

Learn More

Datasheet

4.779In Stock

Cut Tape

25,89 kr.

17,16 kr.

15,67 kr.

13,28 kr.

View

Reel

9,47 kr.

MouseReel Available

Min.: 1
Mult.: 1

: 2.500

8-bit Microcontrollers - MCU

SMD/SMT

STM8

8 bit

16 MHz

16 kB

2 kB

12 bit

41 I/O

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU Mainstream Arm Cortex-M4 MCU 170 MHz 128 Kbytes Math Accelerator Medium Analog

STM32G431KBT3
STMicroelectronics
1: 47,37 kr.
1.362In Stock

Mfr. Part No.
STM32G431KBT3

Mouser Part No
511-STM32G431KBT3

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M4 MCU 170 MHz 128 Kbytes Math Accelerator Medium Analog

Learn More

Datasheet

1.362In Stock

47,37 kr.

34,76 kr.

32,38 kr.

28,50 kr.

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

ARM Microcontrollers - MCU Arm Cortex-M33 32-bit 250 MHz 2 Mbytes Flash 640KB RAM I3C, DCMI, Ethernet, SMPS

STM32H563AII3Q
STMicroelectronics
1: 75,64 kr.
2.286In Stock

Mfr. Part No.
STM32H563AII3Q

Mouser Part No
511-STM32H563AII3Q

STMicroelectronics

ARM Microcontrollers - MCU Arm Cortex-M33 32-bit 250 MHz 2 Mbytes Flash 640KB RAM I3C, DCMI, Ethernet, SMPS

Learn More

Datasheet

2.286In Stock

75,64 kr.

59,08 kr.

52,44 kr.

50,36 kr.

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

UFBGA-169

ARM Cortex M33

32 bit

250 MHz

2 MB

640 kB

12 bit

- 40 C

+ 125 C

Tray

Microprocessors - MPU MPU Dual Arm Cortex-A35 1.5GHz Cortex-M33 400MHz 3xEther (2+1 switch) 3xFD-CAN

STM32MP257FAI3
STMicroelectronics
1: 205,82 kr.
1.795In Stock

Mfr. Part No.
STM32MP257FAI3

Mouser Part No
511-STM32MP257FAI3

STMicroelectronics

Microprocessors - MPU MPU Dual Arm Cortex-A35 1.5GHz Cortex-M33 400MHz 3xEther (2+1 switch) 3xFD-CAN

Learn More

Datasheet

1.795In Stock

205,82 kr.

166,58 kr.

156,81 kr.

145,99 kr.

View

Min.: 1
Mult.: 1

Microprocessors - MPU

SMD/SMT

TFBGA-436

ARM Cortex A35, ARM Cortex M33

32 bit

400 MHz, 1.5 GHz

648 kB

172 I/O

- 40 C

+ 125 C

Tray

Microprocessors - MPU MPU Dual Arm Cortex-A35 1.5GHz Cortex-M33 400MHz 3xEther (2+1 switch) 3xFD-CAN

STM32MP257FAK3
STMicroelectronics
1: 179,11 kr.
1.099In Stock

Mfr. Part No.
STM32MP257FAK3

Mouser Part No
511-STM32MP257FAK3

STMicroelectronics

Microprocessors - MPU MPU Dual Arm Cortex-A35 1.5GHz Cortex-M33 400MHz 3xEther (2+1 switch) 3xFD-CAN

Learn More

Datasheet

1.099In Stock

179,11 kr.

144,35 kr.

135,70 kr.

126,15 kr.

View

Min.: 1
Mult.: 1

Microprocessors - MPU

SMD/SMT

VFBGA-424

ARM Cortex A35, ARM Cortex M33

32 bit

400 MHz, 1.5 GHz

648 kB

144 I/O

- 40 C

+ 125 C

Tray

ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M0+ MCU 256-Kbytes Flash LCD, USB, AES, 48 MHz CPU

STM32U083KCU6
STMicroelectronics
1: 22,08 kr.
12.599In Stock

Mfr. Part No.
STM32U083KCU6

Mouser Part No
511-STM32U083KCU6

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M0+ MCU 256-Kbytes Flash LCD, USB, AES, 48 MHz CPU

Learn More

Datasheet

12.599In Stock

22,08 kr.

16,56 kr.

15,22 kr.

13,73 kr.

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

ARM Cortex M0

48 MHz

256 kB

Tray

ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M0+ MCU 256-Kbytes Flash LCD, USB, AES, 48 MHz CPU

STM32U083RCT6
STMicroelectronics
1: 26,33 kr.
8.757In Stock
6.720Expected 04/12/2026

Mfr. Part No.
STM32U083RCT6

Mouser Part No
511-STM32U083RCT6

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M0+ MCU 256-Kbytes Flash LCD, USB, AES, 48 MHz CPU

Learn More

Datasheet

8.757In Stock

6.720Expected 04/12/2026

26,33 kr.

19,92 kr.

17,23 kr.

16,86 kr.

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

ARM Cortex M0

48 MHz

256 kB

Tray

ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 160 MHz 2Mbytes Flash

STM32U585AII3
STMicroelectronics
1: 80,72 kr.
2.485In Stock

Mfr. Part No.
STM32U585AII3

Mouser Part No
511-STM32U585AII3

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 160 MHz 2Mbytes Flash

Learn More

Datasheet

2.485In Stock

80,72 kr.

63,41 kr.

59,01 kr.

54,31 kr.

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

Tray

ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 MCU TrustZone, 160 MHz 4Mbytes of Flash

STM32U595QJI6
STMicroelectronics
1: 100,71 kr.
1.652In Stock

Mfr. Part No.
STM32U595QJI6

Mouser Part No
511-STM32U595QJI6

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 MCU TrustZone, 160 MHz 4Mbytes of Flash

Learn More

Datasheet

1.652In Stock

100,71 kr.

81,31 kr.

79,97 kr.

73,85 kr.

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

Tray

ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 MCU TrustZone, 160 MHz 4Mbytes of Flash

STM32U599VJT6
STMicroelectronics
1: 111,60 kr.
1.177In Stock
1.620Expected 05/07/2027

Mfr. Part No.
STM32U599VJT6

Mouser Part No
511-STM32U599VJT6

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 MCU TrustZone, 160 MHz 4Mbytes of Flash

Learn More

Datasheet

1.177In Stock

1.620Expected 05/07/2027

111,60 kr.

89,59 kr.

79,67 kr.

77,43 kr.

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

Tray

Embedded Processors & Controllers

Types of Embedded Processors & Controllers

Customer Service Office

Company

Resources

Support

BGA-100
BGA-132
BGA-144
BGA-168
BGA-169
BGA-176
BGA-216
BGA-292
BGA-64
BGA-73
CSP-100
CSP-115
CSP-36
CSP-48
CSP-64
CSP-72
CSP-81
FPBGA-292
FPBGA-302
FPBGA-386

ARM1176JZ-F
ARM Cortex-A35
ARM Cortex A35, ARM Cortex M33
ARM Cortex A7
ARM Cortex A7, ARM Cortex M4
ARM Cortex M0
ARM Cortex-M0, ARM Cortex-M4
ARM Cortex M0+
ARM Cortex M0+, ARM Cortex M4
ARM Cortex M3
ARM Cortex M33
ARM Cortex M33, ARM Cortex A35
ARM Cortex M35P
ARM Cortex M4
ARM Cortex M4, ARM Cortex M7
ARM Cortex M4F
ARM Cortex M55
ARM Cortex M7
ARM Cortex-R52+
e200z0

8 MHz
15 MHz
16 MHz
16 MHz/32 MHz
20 MHz
24 MHz
32 MHz
32 MHz, 64 MHz
36 MHz
48 MHz
56 MHz
64 MHz
72 MHz
80 MHz
80 MHz, 120 MHz
80 MHz, 160 MHz
84 MHz
96 MHz
100 MHz
110 MHz

0 B
1 KB
2 kB
4 kB
8 kB
16 kB
32 kB
64 kB
96 kB
128 KB
128 kB
160 kB
176 kB
192 kB
256 kB
320 kB
384 kB
512 kB
640 kB
768 kB

384 B
512 B
1 kB
1.5 kB
2 kB
4 kB
6 kB
8 kB
10 kB
12 kB
16 KB
16 kB
18 kB
20 kB
22 kB
24 kB
32 KB
32 kB
36 kB
40 kB

2 x 10 bit
2 x 10 bit, 5 x 12 bit, 6 x 16 bit
2 x 12 bit
2 x 16 bit
2 x 6 bit/8 bit/10 bit/12 bit
2 x 8 bit/10 bit/12 bit
3 x 10 bit, 5 x 12 bit, 6 x 16 bit
3 x 12 bit
3 x 12 bit, 1 x 16 bit
3 x 16 bit
4 x 12 bit
4 x 6 bit/8 bit/10 bit/12 bit
5 x 12 bit
5 x 12 bit, 2 x 16 bit
6 bit/8 bit/10 bit/12 bit
8 bit to 16 bit
10 bit
10 bit, 12 bit
10 bit, 3 x 12 bit
10 bit, 4 x 12 bit

5 I/O
6 I/O
8 I/O
9 I/O
10 I/O
11 I/O
14 I/O
15 I/O
16 I/O
17 I/O
18 I/O
19 I/O
20 I/O
21 I/O
22 I/O
23 I/O
24 I/O
25 I/O
26 I/O
27 I/O