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

STMicroelectronics Embedded Processors & Controllers

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

Types of Embedded Processors & Controllers

List Images

Results: 5,490

Applied Filters:

Brand = STMicroelectronics

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 Mainstream Arm Cortex-M0 Access line MCU 32 Kbytes of Flash 48 MHz CPU, motor co

STM32F051K6T7TR
STMicroelectronics
1: €3.19
1,880In Stock

Mfr. Part No.
STM32F051K6T7TR

Mouser Part No
511-STM32F051K6T7TR

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0 Access line MCU 32 Kbytes of Flash 48 MHz CPU, motor co

Learn More

Datasheet

1,880In Stock

Cut Tape

€3.19

€2.41

€2.21

€2.00

Reel

€1.68

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,400

ARM Microcontrollers - MCU

SMD/SMT

LQFP-32

ARM Cortex M0

32 bit

48 MHz

32 kB

8 kB

12 bit

25 I/O

- 40 C

+ 105 C

Reel, Cut Tape, MouseReel

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

STM32F071CBT7TR
STMicroelectronics
1: €5.54
1,948In Stock

Mfr. Part No.
STM32F071CBT7TR

Mouser Part No
511-STM32F071CBT7TR

STMicroelectronics

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

Learn More

Datasheet

1,948In Stock

Cut Tape

€5.54

€4.02

€3.75

€3.29

Reel

€2.27

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,400

ARM Microcontrollers - MCU

SMD/SMT

LQFP-48

ARM Cortex M0

32 bit

48 MHz

128 kB

16 kB

12 bit

37 I/O

- 40 C

+ 105 C

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0 Access line MCU 256 Kbytes of Flash 48 MHz CPU, CAN & C

STM32F091VCH7
STMicroelectronics
1: €5.75
2,496In Stock

Mfr. Part No.
STM32F091VCH7

Mouser Part No
511-STM32F091VCH7

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0 Access line MCU 256 Kbytes of Flash 48 MHz CPU, CAN & C

Learn More

Datasheet

2,496In Stock

€5.75

€4.43

€4.10

€3.73

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

UFBGA-100

ARM Cortex M0

32 bit

48 MHz

256 kB

32 kB

12 bit

88 I/O

- 40 C

+ 105 C

Tray

ARM Microcontrollers - MCU 32-Bit Cortex 64Kb Access Line MCU

STM32F101C8U6
STMicroelectronics
1: €3.81
1,519In Stock

Mfr. Part No.
STM32F101C8U6

Mouser Part No
511-STM32F101C8U6

STMicroelectronics

ARM Microcontrollers - MCU 32-Bit Cortex 64Kb Access Line MCU

Learn More

Datasheet

1,519In Stock

€3.81

€2.91

€2.68

€2.43

€2.39

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

UFQFPN-48

ARM Cortex M3

32 bit

36 MHz

64 kB

10 kB

12 bit

37 I/O

- 40 C

+ 85 C

Tray

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

STM32F102R4T6A
STMicroelectronics
1: €4.27
950In Stock

Mfr. Part No.
STM32F102R4T6A

Mouser Part No
511-STM32F102R4T6A

STMicroelectronics

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

Learn More

Datasheet

950In Stock

€4.27

€3.25

€3.00

€2.65

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

LQFP-64

ARM Cortex M3

32 bit

48 MHz

16 kB

4 kB

12 bit

51 I/O

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU 32-Bit Cortex 64Kb Performance Line

STM32F103REY6TR
STMicroelectronics
1: €8.75
1,899In Stock

Mfr. Part No.
STM32F103REY6TR

Mouser Part No
511-STM32F103REY6TR

STMicroelectronics

ARM Microcontrollers - MCU 32-Bit Cortex 64Kb Performance Line

Learn More

Datasheet

1,899In Stock

Cut Tape

€8.75

€6.82

€6.35

€5.81

View

Reel

€5.02

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ARM Microcontrollers - MCU

SMD/SMT

WLCSP-64

ARM Cortex M3

32 bit

72 MHz

512 kB

64 kB

12 bit

51 I/O

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7

STM32F302R8T6TR
STMicroelectronics
1: €5.00
553In Stock

Mfr. Part No.
STM32F302R8T6TR

Mouser Part No
511-STM32F302R8T6TR

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7

Learn More

Datasheet

553In Stock

Cut Tape

€5.00

€3.82

€3.53

€3.21

View

Reel

€2.70

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

ARM Microcontrollers - MCU

SMD/SMT

LQFP-64

ARM Cortex M4

32 bit

72 MHz

64 kB

16 kB

6 bit/8 bit/10 bit/12 bit

51 I/O

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M0+ MCU 64 Kbytes of Flash , 32 MHz CPU

STM32L051T8Y7DTR
STMicroelectronics
1: €3.38
5,000In Stock

Mfr. Part No.
STM32L051T8Y7DTR

Mouser Part No
511-STM32L051T8Y7DTR

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M0+ MCU 64 Kbytes of Flash , 32 MHz CPU

Learn More

Datasheet

5,000In Stock

Cut Tape

€3.38

€2.24

€2.04

€1.73

View

Reel

€1.19

Min.: 1
Mult.: 1

Reel: 5,000

ARM Microcontrollers - MCU

SMD/SMT

WLCSP-36

ARM Cortex M0+

32 bit

32 MHz

64 kB

8 kB

12 bit

29 I/O

- 40 C

+ 105 C

Reel, Cut Tape

ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M0+ MCU 128-Kbytes of Flash , 32 MHz CPU, USB

STM32L072VBI6
STMicroelectronics
1: €5.65
1,571In Stock

Mfr. Part No.
STM32L072VBI6

Mouser Part No
511-STM32L072VBI6

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M0+ MCU 128-Kbytes of Flash , 32 MHz CPU, USB

Learn More

Datasheet

1,571In Stock

€5.65

€4.15

€3.87

€3.41

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

UFBGA-100

ARM Cortex M0+

32 bit

32 MHz

128 kB

20 kB

12 bit

84 I/O

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU 32B ARM Cortex-M3 Value line 16KB Flsh

STM32F100R4T6BTR
STMicroelectronics
1: €4.04
2,000In Stock

Mfr. Part No.
STM32F100R4T6BTR

Mouser Part No
511-STM32F100R4T6BTR

STMicroelectronics

ARM Microcontrollers - MCU 32B ARM Cortex-M3 Value line 16KB Flsh

Learn More

Datasheet

2,000In Stock

Cut Tape

€4.04

€3.08

€2.84

€2.57

View

Reel

€2.13

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

ARM Microcontrollers - MCU

SMD/SMT

ARM Cortex M3

32 bit

24 MHz

128 kB

4 kB

12 bit

51 I/O

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU Mainstream Connectivity line, Arm Cortex-M3 MCU 256 Kbytes of Flash 72 MHz CPU,

STM32F105RCT6V
STMicroelectronics
1: €10.55
510In Stock
NRND

Mfr. Part No.
STM32F105RCT6V

Mouser Part No
511-STM32F105RCT6V

NRND

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Connectivity line, Arm Cortex-M3 MCU 256 Kbytes of Flash 72 MHz CPU,

Learn More

Datasheet

510In Stock

€10.55

€8.29

€7.73

€6.95

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

LQFP-64

ARM Cortex M3

32 bit

72 MHz

256 kB

64 kB

12 bit

51 I/O

- 40 C

+ 85 C

ARM Microcontrollers - MCU Mainstream Connectivity line, Arm Cortex-M3 MCU 256 Kbytes of Flash 72 MHz CPU,

STM32F105VCT6W
STMicroelectronics
1: €8.46
333In Stock
NRND

Mfr. Part No.
STM32F105VCT6W

Mouser Part No
511-STM32F105VCT6W

NRND

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Connectivity line, Arm Cortex-M3 MCU 256 Kbytes of Flash 72 MHz CPU,

Learn More

Datasheet

333In Stock

€8.46

€6.63

€5.80

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

LQFP-100

ARM Cortex M3

32 bit

72 MHz

256 kB

64 kB

12 bit

80 I/O

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 512kB

STM32F215VET6
STMicroelectronics
1: €9.40
540In Stock

Mfr. Part No.
STM32F215VET6

Mouser Part No
511-STM32F215VET6

STMicroelectronics

ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 512kB

Learn More

Datasheet

540In Stock

€9.40

€6.91

€6.50

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

LQFP-100

ARM Cortex M3

32 bit

120 MHz

512 kB

128 kB

12 bit

82 I/O

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU High-performance Arm Cortex-M3 MCU 1 Mbyte of Flash 120 MHz CPU, ART Accel, HW c

STM32F215VGT7
STMicroelectronics
1: €8.33
520In Stock

Mfr. Part No.
STM32F215VGT7

Mouser Part No
511-STM32F215VGT7

STMicroelectronics

ARM Microcontrollers - MCU High-performance Arm Cortex-M3 MCU 1 Mbyte of Flash 120 MHz CPU, ART Accel, HW c

Learn More

Datasheet

520In Stock

€8.33

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

LQFP-100

ARM Cortex M3

32 bit

120 MHz

1 MB

128 kB

12 bit

82 I/O

- 40 C

+ 105 C

Tray

ARM Microcontrollers - MCU 32-Bit ARM Cortex M4 72MHz 128kB MCU FPU

STM32F373VBH6
STMicroelectronics
1: €7.13
1,175In Stock

Mfr. Part No.
STM32F373VBH6

Mouser Part No
511-STM32F373VBH6

STMicroelectronics

ARM Microcontrollers - MCU 32-Bit ARM Cortex M4 72MHz 128kB MCU FPU

Learn More

Datasheet

1,175In Stock

€7.13

€5.52

€5.13

€4.69

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

BGA-100

ARM Cortex M4

32 bit

72 MHz

128 kB

24 kB

16 bit

- 40 C

+ 85 C

ARM Microcontrollers - MCU High-performance advanced line, Arm Cortex-M4 core DSP & FPU, 1 Mbyte of Flash 1

STM32F439NGH6
STMicroelectronics
1: €12.95
960In Stock

Mfr. Part No.
STM32F439NGH6

Mouser Part No
511-STM32F439NGH6

STMicroelectronics

ARM Microcontrollers - MCU High-performance advanced line, Arm Cortex-M4 core DSP & FPU, 1 Mbyte of Flash 1

Learn More

Datasheet

960In Stock

€12.95

€10.25

€9.57

€8.63

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

TFBGA-216

12 bit

Tray

ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M0+ MCU 32 Kbytes of Flash , 32 MHz CPU, USB, LCD

STM32L053C6T7
STMicroelectronics
1: €3.78
1,457In Stock

Mfr. Part No.
STM32L053C6T7

Mouser Part No
511-STM32L053C6T7

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M0+ MCU 32 Kbytes of Flash , 32 MHz CPU, USB, LCD

Learn More

Datasheet

1,457In Stock

€3.78

€2.50

€2.30

€1.97

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

LQFP-48

ARM Cortex M0+

32 bit

32 MHz

32 kB

8 kB

12 bit

37 I/O

- 40 C

+ 105 C

Tray

Microprocessors - MPU MPU Arm Cortex-A7 650 MHz, Arm Cortex-M4 real-time coprocessor, TFT display

STM32MP151AAC3
STMicroelectronics
1: €9.33
605In Stock

Mfr. Part No.
STM32MP151AAC3

Mouser Part No
511-STM32MP151AAC3

STMicroelectronics

Microprocessors - MPU MPU Arm Cortex-A7 650 MHz, Arm Cortex-M4 real-time coprocessor, TFT display

Learn More

Datasheet

605In Stock

€9.33

€7.29

€6.79

€6.04

View

Min.: 1
Mult.: 1

Microprocessors - MPU

SMD/SMT

TFBGA-361

ARM Cortex A7, ARM Cortex M4

32 bit

209 MHz, 650 MHz

32 kB

708 kB

148 I/O

- 40 C

+ 125 C

Tray

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

STM32H563AII3Q
STMicroelectronics
1: €8.82
2,496In 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

2,496In Stock

€8.82

€6.89

€6.41

€5.87

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

ARM Microcontrollers - MCU Arm Cortex-M33 32-bit 250 MHz 2 Mbytes Flash 640KB RAM hardware encryption accel

STM32H573AII3Q
STMicroelectronics
1: €9.39
2,277In Stock

Mfr. Part No.
STM32H573AII3Q

Mouser Part No
511-STM32H573AII3Q

STMicroelectronics

ARM Microcontrollers - MCU Arm Cortex-M33 32-bit 250 MHz 2 Mbytes Flash 640KB RAM hardware encryption accel

Learn More

Datasheet

2,277In Stock

€9.39

€7.35

€6.85

€6.28

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

134 I/O

- 40 C

+ 125 C

Tray

ARM Microcontrollers - MCU Arm Cortex-M33 32-bit 250 MHz 2 Mbytes Flash 640KB RAM hardware encryption accel

STM32H573AII6
STMicroelectronics
1: €8.83
2,263In Stock

Mfr. Part No.
STM32H573AII6

Mouser Part No
511-STM32H573AII6

STMicroelectronics

ARM Microcontrollers - MCU Arm Cortex-M33 32-bit 250 MHz 2 Mbytes Flash 640KB RAM hardware encryption accel

Learn More

Datasheet

2,263In Stock

€8.83

€6.90

€6.42

€5.88

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

134 I/O

- 40 C

+ 125 C

Tray

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

STM32U585AII3
STMicroelectronics
1: €9.95
2,531In 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

2,531In Stock

€9.95

€7.80

€7.27

€6.67

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

Tray

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

STM32U5A5AJH3
STMicroelectronics
1: €16.55
2,633In Stock

Mfr. Part No.
STM32U5A5AJH3

Mouser Part No
511-STM32U5A5AJH3

STMicroelectronics

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

Learn More

Datasheet

2,633In Stock

€16.55

€13.37

€12.82

€11.29

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

TFBGA-169

ARM Cortex M33

32 bit

160 MHz

4 MB

2.5 MB

12 bit, 14 bit

8 I/O

- 40 C

+ 125 C

Tray

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

STM32U5A5QJI3Q
STMicroelectronics
1: €14.35
2,478In Stock

Mfr. Part No.
STM32U5A5QJI3Q

Mouser Part No
511-STM32U5A5QJI3Q

STMicroelectronics

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

Learn More

Datasheet

2,478In Stock

€14.35

€11.40

€10.66

€9.84

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

SMD/SMT

UFBGA-132

ARM Cortex M33

32 bit

160 MHz

2 MB

2.5 MB

12 bit

156 I/O

- 40 C

+ 125 C

Tray

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

STM32U5A5QJI6
STMicroelectronics
1: €15.02
2,446In Stock

Mfr. Part No.
STM32U5A5QJI6

Mouser Part No
511-STM32U5A5QJI6

STMicroelectronics

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

Learn More

Datasheet

2,446In Stock

€15.02

€12.13

€11.64

€10.25

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

Tray

STMicroelectronics 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 M33, ARM Cortex A35
ARM Cortex M35P
ARM Cortex M4
ARM Cortex M4, ARM Cortex M0+
ARM Cortex M4, ARM Cortex M7
ARM Cortex M4F
ARM Cortex M55
ARM Cortex M7

8 MHz
15 MHz
16 MHz
16 MHz/32 MHz
20 MHz
24 MHz
32 MHz
36 MHz
48 MHz
56 MHz
64 MHz
64 MHz, 32 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
64 kB
96 kB
128 KB
128 kB
160 kB
176 kB
192 kB
256 KB
256 kB
320 kB
384 kB
512 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