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

Tube Embedded Processors & Controllers

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

Types of Embedded Processors & Controllers

List Images

Results: 9,647

Applied Filters:

Packaging = Tube

Manufacturer

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

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 #

8-bit Microcontrollers - MCU CAN, 64KB Flash, 8KB RAM, 12b ADC3, UTMR, DAC, Comp, PWM, CCP, CWG, HLT, WWDT,

PIC18F56Q83-E/6MX
Microchip Technology
1: £1.57
366In Stock
New Product

Mfr. Part No.
PIC18F56Q83-E/6MX

Mouser Part No
579-PIC18F56Q83E/6MX

New Product

Microchip Technology

8-bit Microcontrollers - MCU CAN, 64KB Flash, 8KB RAM, 12b ADC3, UTMR, DAC, Comp, PWM, CCP, CWG, HLT, WWDT,

Learn More

Datasheet

366In Stock

£1.57

£1.43

£1.30

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

VQFN-48

RISC

8 bit

64 MHz

64 kB

8 kB

12 bit

44 I/O

- 40 C

+ 125 C

Tube

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0+ MCU 256 Kbytes Flash 36 Kbytes RAM, 48 MHz CPU

STM32C091FCP6
STMicroelectronics
1: £2.13
409In Stock
1,480Expected 15/05/2026
New Product

Mfr. Part No.
STM32C091FCP6

Mouser Part No
511-STM32C091FCP6

New Product

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0+ MCU 256 Kbytes Flash 36 Kbytes RAM, 48 MHz CPU

Learn More

Datasheet

409In Stock

1,480Expected 15/05/2026

£2.13

£1.39

£1.26

£1.06

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

Tube

8-bit Microcontrollers - MCU 64KB, 8KB RAM, 28p, 24MHz, USB, 10b ADC, 2xUART, SPI, TWI

AVR64DU28-I/STX
Microchip Technology
1: £1.00
537In Stock
New Product

Mfr. Part No.
AVR64DU28-I/STX

Mouser Part No
579-AVR64DU28-I/STX

New Product

Microchip Technology

8-bit Microcontrollers - MCU 64KB, 8KB RAM, 28p, 24MHz, USB, 10b ADC, 2xUART, SPI, TWI

Learn More

Datasheet

537In Stock

£1.00

£0.925

£0.834

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

VQFN-28

AVR

8 bit

23 MHz

64 kB

8 kB

10 bit

21 I/O

- 40 C

+ 85 C

Tube

8-bit Microcontrollers - MCU 7KB Flash, 512B RAM, 128B EEPROM, 12b Diff. ADCC, 1xOP-AMP, 2x16-bit dual PWM

PIC16F17144-E/6N
Microchip Technology
1: £0.691
699In Stock
New Product

Mfr. Part No.
PIC16F17144-E/6N

Mouser Part No
579-PIC16F17144-E/6N

New Product

Microchip Technology

8-bit Microcontrollers - MCU 7KB Flash, 512B RAM, 128B EEPROM, 12b Diff. ADCC, 1xOP-AMP, 2x16-bit dual PWM

Learn More

Datasheet

699In Stock

£0.691

£0.63

£0.575

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

VQFN-20

PIC16

8 bit

32 MHz

7 kB

512 B

12 bit

18 I/O

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 3.5KB Flash, 128EE, 256B RAM, 10b ADC, PWM, CCP, HLT, WDT, PPS, EUSART, SPI/I2C

PIC16F18023-I/ST
Microchip Technology
1: £0.511
792In Stock
New Product

Mfr. Part No.
PIC16F18023-I/ST

Mouser Part No
579-PIC16F18023-I/ST

New Product

Microchip Technology

8-bit Microcontrollers - MCU 3.5KB Flash, 128EE, 256B RAM, 10b ADC, PWM, CCP, HLT, WDT, PPS, EUSART, SPI/I2C

Learn More

Datasheet

792In Stock

£0.511

£0.465

£0.421

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

TSSOP-14

RISC

8 bit

32 MHz

3.5 kB

256 B

10 bit

12 I/O

- 40 C

+ 85 C

Tube

8-bit Microcontrollers - MCU 16KB Flash, 1K RAM, 256 EEPROM, I3C, MVIO 10b ADCC, 8b DAC, DMA, 16-bit PWM,

PIC18F04Q20-E/SL
Microchip Technology
1: £0.759
662In Stock
New Product

Mfr. Part No.
PIC18F04Q20-E/SL

Mouser Part No
579-PIC18F04Q20-E/SL

New Product

Microchip Technology

8-bit Microcontrollers - MCU 16KB Flash, 1K RAM, 256 EEPROM, I3C, MVIO 10b ADCC, 8b DAC, DMA, 16-bit PWM,

Learn More

Datasheet

662In Stock

£0.759

£0.691

£0.63

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

SOIC-14

PIC18

8 bit

64 MHz

16 kB

1 kB

10 bit

11 I/O

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 32KB Flash, 2K RAM, 256 EEPROM, I3C, MVIO 10b ADCC, 8b DAC, DMA, 16-bit PWM,

PIC18F15Q20-E/SS
Microchip Technology
1: £0.89
603In Stock
New Product

Mfr. Part No.
PIC18F15Q20-E/SS

Mouser Part No
579-PIC18F15Q20-E/SS

New Product

Microchip Technology

8-bit Microcontrollers - MCU 32KB Flash, 2K RAM, 256 EEPROM, I3C, MVIO 10b ADCC, 8b DAC, DMA, 16-bit PWM,

Learn More

Datasheet

603In Stock

£0.89

£0.818

£0.743

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

SSOP-20

PIC18

8 bit

64 MHz

32 kB

2 kB

10 bit

16 I/O

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU CAN-FD, 64KB Flash, 8KB RAM, 12b ADC3, UTMR, DAC, Comp, PWM, CCP,CWG, HLT, WWDT

PIC18F46Q84-E/NHX
Microchip Technology
1: £1.61
365In Stock
New Product

Mfr. Part No.
PIC18F46Q84-E/NHX

Mouser Part No
579-PIC18F46Q84E/NHX

New Product

Microchip Technology

8-bit Microcontrollers - MCU CAN-FD, 64KB Flash, 8KB RAM, 12b ADC3, UTMR, DAC, Comp, PWM, CCP,CWG, HLT, WWDT

Learn More

Datasheet

365In Stock

£1.61

£1.48

£1.34

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

VQFN-40

RISC

8 bit

64 MHz

64 kB

8 kB

12 bit

36 I/O

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 16KB, 2KB SRAM, 24MHz, USB, 10b ADC, 2xUART, SPI, TWI

AVR16DU28-I/SS
Microchip Technology
1: £0.89
601In Stock
New Product

Mfr. Part No.
AVR16DU28-I/SS

Mouser Part No
579-AVR16DU28-I/SS

New Product

Microchip Technology

8-bit Microcontrollers - MCU 16KB, 2KB SRAM, 24MHz, USB, 10b ADC, 2xUART, SPI, TWI

Learn More

Datasheet

601In Stock

£0.89

£0.818

£0.743

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

SSOP-28

8 bit

24 MHz

16 kB

2 kB

10 bit

21 I/O

- 40 C

+ 85 C

Tube

8-bit Microcontrollers - MCU 16KB, 2KB SRAM, 24MHz, USB, 10b ADC, 2xUART, SPI, TWI

AVR16DU28-I/STX
Microchip Technology
1: £0.811
637In Stock
New Product

Mfr. Part No.
AVR16DU28-I/STX

Mouser Part No
579-AVR16DU28-I/STX

New Product

Microchip Technology

8-bit Microcontrollers - MCU 16KB, 2KB SRAM, 24MHz, USB, 10b ADC, 2xUART, SPI, TWI

Learn More

Datasheet

637In Stock

£0.811

£0.743

£0.676

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

VQFN-28

8 bit

24 MHz

16 kB

2 kB

10 bit

21 I/O

- 40 C

+ 85 C

Tube

8-bit Microcontrollers - MCU 3.5KB Flash, 256B RAM, 10b ADC, 8b DAC, CLB, CLC, 2x PWM, 2x CCP, HLT, WWDT,

PIC16F13113-E/MF
Microchip Technology
1: £0.518
860In Stock
New Product

Mfr. Part No.
PIC16F13113-E/MF

Mouser Part No
579-PIC16F13113-E/MF

New Product

Microchip Technology

8-bit Microcontrollers - MCU 3.5KB Flash, 256B RAM, 10b ADC, 8b DAC, CLB, CLC, 2x PWM, 2x CCP, HLT, WWDT,

Learn More

Datasheet

860In Stock

£0.518

£0.48

£0.436

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

DFN-8

RISC

8 bit

32 MHz

3.5 kB

256 B

10 bit

6 I/O

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 7KB Flash, 512B RAM, 10b ADC, 8b DAC, CLB, CLC, 2x PWM, 2x CCP, HLT, WWDT,

PIC16F13114-E/MF
Microchip Technology
1: £0.533
960In Stock
New Product

Mfr. Part No.
PIC16F13114-E/MF

Mouser Part No
579-PIC16F13114-E/MF

New Product

Microchip Technology

8-bit Microcontrollers - MCU 7KB Flash, 512B RAM, 10b ADC, 8b DAC, CLB, CLC, 2x PWM, 2x CCP, HLT, WWDT,

Learn More

Datasheet

960In Stock

£0.533

£0.488

£0.443

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

DFN-8

RISC

8 bit

32 MHz

7 kB

512 B

10 bit

6 I/O

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 7KB Flash, 512B RAM, 128B EEPROM, 12b Diff. ADCC, 1xOP-AMP, 2x16-bit dual PWM

PIC16F17154-E/SS
Microchip Technology
1: £0.96
554In Stock
New Product

Mfr. Part No.
PIC16F17154-E/SS

Mouser Part No
579-PIC16F17154-E/SS

New Product

Microchip Technology

8-bit Microcontrollers - MCU 7KB Flash, 512B RAM, 128B EEPROM, 12b Diff. ADCC, 1xOP-AMP, 2x16-bit dual PWM

Learn More

Datasheet

554In Stock

£0.96

£0.882

£0.803

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

SSOP-20

RISC

8 bit

32 MHz

7 kB

512 B

12 bit

25 I/O

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 14KB Flash, 1KB RAM, 128B EEPROM, 12b Diff. ADCC, 1xOP-AMP, 2x16-bit dual PWM

PIC16F17175-E/P
Microchip Technology
1: £1.70
348In Stock
New Product

Mfr. Part No.
PIC16F17175-E/P

Mouser Part No
579-PIC16F17175-EP

New Product

Microchip Technology

8-bit Microcontrollers - MCU 14KB Flash, 1KB RAM, 128B EEPROM, 12b Diff. ADCC, 1xOP-AMP, 2x16-bit dual PWM

Learn More

Datasheet

348In Stock

£1.70

£1.56

£1.42

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

PDIP-40

RISC

32 MHz

14 kB

1 kB

12 bit

36 I/O

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 7KB Flash, 128EE, 512B RAM, 10b ADC, PWM, CCP, HLT, WDT, PPS, EUSART, SPI/I2C

PIC16F18014-I/MF
Microchip Technology
1: £0.511
940In Stock
New Product

Mfr. Part No.
PIC16F18014-I/MF

Mouser Part No
579-PIC16F18014-I/MF

New Product

Microchip Technology

8-bit Microcontrollers - MCU 7KB Flash, 128EE, 512B RAM, 10b ADC, PWM, CCP, HLT, WDT, PPS, EUSART, SPI/I2C

Learn More

Datasheet

940In Stock

£0.511

£0.465

£0.421

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

DFN-8

PIC16

8 bit

32 MHz

7 kB

512 B

10 bit

- 40 C

+ 85 C

Tube

8-bit Microcontrollers - MCU 7KB Flash, 512B RAM, 128B EEPROM, 12b Diff. ADCC, 2x16-bit dual PWM

PIC16F18154-E/SO
Microchip Technology
1: £1.05
508In Stock
New Product

Mfr. Part No.
PIC16F18154-E/SO

Mouser Part No
579-PIC16F18154-E/SO

New Product

Microchip Technology

8-bit Microcontrollers - MCU 7KB Flash, 512B RAM, 128B EEPROM, 12b Diff. ADCC, 2x16-bit dual PWM

Learn More

Datasheet

508In Stock

£1.05

£0.952

£0.863

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

SOIC-20

RISC

8 bit

32 MHz

7 kB

512 B

12 bit

25 I/O

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 7KB Flash, 512B RAM, 128B EEPROM, 12b Diff. ADCC, 2x16-bit dual PWM

PIC16F18154-E/STX
Microchip Technology
1: £0.668
612In Stock
New Product

Mfr. Part No.
PIC16F18154-E/STX

Mouser Part No
579-PIC16F18154E/STX

New Product

Microchip Technology

8-bit Microcontrollers - MCU 7KB Flash, 512B RAM, 128B EEPROM, 12b Diff. ADCC, 2x16-bit dual PWM

Learn More

Datasheet

612In Stock

£0.668

£0.615

£0.556

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

VQFN-28

RISC

8 bit

32 MHz

7 kB

512 B

12 bit

25 I/O

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 14KB Flash, 1KB RAM, 128B EEPROM, 12b Diff. ADCC, 2x16-bit dual PWM

PIC16F18155-E/SO
Microchip Technology
1: £1.10
486In Stock
New Product

Mfr. Part No.
PIC16F18155-E/SO

Mouser Part No
579-PIC16F18155-E/SO

New Product

Microchip Technology

8-bit Microcontrollers - MCU 14KB Flash, 1KB RAM, 128B EEPROM, 12b Diff. ADCC, 2x16-bit dual PWM

Learn More

Datasheet

486In Stock

£1.10

£1.01

£0.917

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

SOIC-20

RISC

8 bit

32 MHz

14 kB

1 kB

12 bit

25 I/O

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 7KB Flash, 512B RAM, 128B EEPROM, 12b Diff. ADCC, 2x16-bit dual PWM

PIC16F18174-E/MP
Microchip Technology
1: £0.952
491In Stock
New Product

Mfr. Part No.
PIC16F18174-E/MP

Mouser Part No
579-PIC16F18174-E/MP

New Product

Microchip Technology

8-bit Microcontrollers - MCU 7KB Flash, 512B RAM, 128B EEPROM, 12b Diff. ADCC, 2x16-bit dual PWM

Learn More

Datasheet

491In Stock

£0.952

£0.882

£0.796

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

QFN-40

RISC

8 bit

32 MHz

7 kB

512 B

12 bit

36 I/O

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 16KB Flash, 1K RAM, 256 EEPROM, I3C, MVIO 10b ADCC, 8b DAC, DMA, 16-bit PWM,

PIC18F04Q20-E/ST
Microchip Technology
1: £0.78
672In Stock
New Product

Mfr. Part No.
PIC18F04Q20-E/ST

Mouser Part No
579-PIC18F04Q20-E/ST

New Product

Microchip Technology

8-bit Microcontrollers - MCU 16KB Flash, 1K RAM, 256 EEPROM, I3C, MVIO 10b ADCC, 8b DAC, DMA, 16-bit PWM,

Learn More

Datasheet

672In Stock

£0.78

£0.721

£0.653

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

TSSOP-14

PIC18

8 bit

64 MHz

16 kB

1 kB

10 bit

11 I/O

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 16KB Flash, 1K RAM, 256 EEPROM, I3C, MVIO 10b ADCC, 8b DAC, DMA, 16-bit PWM,

PIC18F14Q20-E/SO
Microchip Technology
1: £0.908
568In Stock
New Product

Mfr. Part No.
PIC18F14Q20-E/SO

Mouser Part No
579-PIC18F14Q20-E/SO

New Product

Microchip Technology

8-bit Microcontrollers - MCU 16KB Flash, 1K RAM, 256 EEPROM, I3C, MVIO 10b ADCC, 8b DAC, DMA, 16-bit PWM,

Learn More

Datasheet

568In Stock

£0.908

£0.834

£0.752

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

SOIC-20

PIC18

8 bit

64 MHz

16 kB

1 kB

10 bit

16 I/O

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 64KB Flash, 4K RAM, 256 EEPROM, MVIO, I3C, Virtual Port, 10b ADCC, DMA,

PIC18F16Q20-E/SO
Microchip Technology
1: £1.07
530In Stock
New Product

Mfr. Part No.
PIC18F16Q20-E/SO

Mouser Part No
579-PIC18F16Q20-E/SO

New Product

Microchip Technology

8-bit Microcontrollers - MCU 64KB Flash, 4K RAM, 256 EEPROM, MVIO, I3C, Virtual Port, 10b ADCC, DMA,

Learn More

Datasheet

530In Stock

£1.07

£0.986

£0.89

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

SOIC-20

RISC

8 bit

64 MHz

64 kB

4 kB

10 bit

16 I/O

- 40 C

+ 125 C

Tube

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0+ MCU 64 Kbytes Flash 24 Kbytes RAM 48 MHz CPU, 2x USART

STM32C071F8P6
STMicroelectronics
1: £1.63
974In Stock
New Product

Mfr. Part No.
STM32C071F8P6

Mouser Part No
511-STM32C071F8P6

New Product

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0+ MCU 64 Kbytes Flash 24 Kbytes RAM 48 MHz CPU, 2x USART

Learn More

Datasheet

974In Stock

£1.63

£1.05

£0.934

£0.766

View

Min.: 1
Mult.: 1

ARM Microcontrollers - MCU

Tube

8-bit Microcontrollers - MCU 32KB, 4KB SRAM, 24MHz, USB, 10b ADC, 2xUART, SPI, TWI

AVR32DU28-I/SS
Microchip Technology
1: £1.00
486In Stock
New Product

Mfr. Part No.
AVR32DU28-I/SS

Mouser Part No
579-AVR32DU28-I/SS

New Product

Microchip Technology

8-bit Microcontrollers - MCU 32KB, 4KB SRAM, 24MHz, USB, 10b ADC, 2xUART, SPI, TWI

Learn More

Datasheet

486In Stock

£1.00

£0.925

£0.834

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

SSOP-28

8 bit

24 MHz

32 kB

4 kB

10 bit

21 I/O

- 40 C

+ 85 C

Tube

8-bit Microcontrollers - MCU 7KB, 512 B RAM, 4xPWMs, Comparator, DAC, ADC, CWG, 2xEUSART, SPI/I2C

PIC16F15344-I/ML
Microchip Technology
1: £0.871
536In Stock
New Product

Mfr. Part No.
PIC16F15344-I/ML

Mouser Part No
579-PIC16F15344-I/ML

New Product

Microchip Technology

8-bit Microcontrollers - MCU 7KB, 512 B RAM, 4xPWMs, Comparator, DAC, ADC, CWG, 2xEUSART, SPI/I2C

Learn More

Datasheet

536In Stock

£0.871

£0.788

£0.722

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

QFN-20

PIC

8 bit

32 MHz

7 kB

512 B

10 bit

18 I/O

- 40 C

Tube

Tube Embedded Processors & Controllers

Types of Embedded Processors & Controllers

Customer Service Office

Company

Resources

Support

BGA-256
BGA-548
BGA-80
BGA-81
CABGA-256
CDIP-24
CLCC-28
DFN-8
DIP-14
DIP-20
DIP-28
DIP-40
DIP-8
FCBGA-697
JLCC-44
LAP-8
LCC-28
LQFP-100
LQFP-144
LQFP-32

8051
8052
4T 8051
80C188
ARM926EJ-S, C674x
ARM Cortex A8
ARM Cortex M0
ARM Cortex M0+
ARM Cortex M23
ARM Cortex M3
ARM Cortex M33
ARM Cortex M4
ARM Cortex R4F
AVR
C25x
C28x
C64x
CIP-51 8051
dsPIC
dsPIC30F

50 kHz
2.1 MHz
4 MHz
5 MHz
8 MHz
10 MHz
12 MHz
14 MHz
15 MHz
16 MHz
16.384 MHz
16.78 MHz
18 MHz
20 MHz
23 MHz
24 MHz
25 MHz
30 MHz
32 MHz
33 MHz

0 B
384 B
512 B
768 B
896 B
1 kB
1.5 kB
1.75 kB
2 kB
3 kB
3.5 kB
3.75 kB
4 kB
4.56 kB
6 kB
7 kB
7.2 kB
8 kB
9 kB
12 kB

0 B
16 B
23 B
24 B
25 B
36 B
38 B
41 B
60 B
61 B
64 B
67 B
68 B
72 B
73 B
80 B
96 B
125 B
128 B
134 B

2 I/O
3 I/O
4 I/O
5 I/O
6 I/O
7 I/O
8 I/O
9 I/O
10 I/O
11 I/O
12 I/O
13 I/O
14 I/O
15 I/O
16 I/O
17 I/O
18 I/O
19 I/O
20 I/O
21