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

STM32 Mga Microcontroller - MCU

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

Mga Uri ng Microcontroller - MCU

Listahan Mga Larawan

Mga Resulta: 4,058

Mga Ginamit na Filter:

Pangalang pangkalakal = STM32

Isitilo ng Mounting

Package / Case

Core

Lapad ng Data Bus

Maximum na Clock Frequency

Laki ng Memory ng Program

Laki ng Data RAM

Resolusyon ng ADC

Dami ng I/O

Supply Voltage - Min

Supply Voltage - Max

Maximum na Operating Temperature

Packaging

I-reset Lahat

Maghanap sa loob ng mga resulta

May Stock

Karaniwang May Stock

Aktibo

Mga Bagong Produkto

Sumusunod sa RoHS

.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; }

# ng Piyesa

ARM Microcontrollers - MCU Mainstream Arm Cortex-M33 MCU, 144 MHz, 512 KB flash, 128 KB RAM, I3C, FDCAN

STM32C552VET6
STMicroelectronics
1: ₱244.79
675May Stock
Bagong Produkto

Mfr. # ng Piyesa
STM32C552VET6

# ng Piyesa ng Mouser
511-STM32C552VET6

Bagong Produkto

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M33 MCU, 144 MHz, 512 KB flash, 128 KB RAM, I3C, FDCAN

Alamin Pa

Datasheet

675May Stock

₱244.79

₱173.62

₱151.53

₱134.36

Min.: 1
Mult.: 1
Max.: 100

SMD/SMT

LQFP-100

ARM Cortex M33

32 bit

144 MHz

512 kB

128 kB

12 bit

86 I/O

2.7 V

3.6 V

+ 85 C

Tray

ARM Microcontrollers - MCU Mainstream Arm Cortex-M33 MCU, 144 MHz, 256 KB flash, 64 KB RAM, I3C, Dual FDCAN

STM32C542KCU6
STMicroelectronics
1: ₱203.68
327May Stock
Bagong Produkto

Mfr. # ng Piyesa
STM32C542KCU6

# ng Piyesa ng Mouser
511-STM32C542KCU6

Bagong Produkto

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M33 MCU, 144 MHz, 256 KB flash, 64 KB RAM, I3C, Dual FDCAN

Alamin Pa

Datasheet

327May Stock

₱203.68

₱132.52

₱121.47

Min.: 1
Mult.: 1
Max.: 50

SMD/SMT

UFQFPN-32

ARM Cortex M33

32 bit

144 MHz

256 kB

64 kB

12 bit

25 I/O

2.7 V

3.6 V

+ 85 C

Tray

ARM Microcontrollers - MCU Mainstream Arm Cortex-M33 MCU, 144 MHz, 256 KB flash, 64 KB RAM, I3C, Dual FDCAN

STM32C542KCT6
STMicroelectronics
1: ₱204.30
189May Stock
Bagong Produkto

Mfr. # ng Piyesa
STM32C542KCT6

# ng Piyesa ng Mouser
511-STM32C542KCT6

Bagong Produkto

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M33 MCU, 144 MHz, 256 KB flash, 64 KB RAM, I3C, Dual FDCAN

Alamin Pa

Datasheet

189May Stock

₱204.30

₱133.13

₱122.09

Min.: 1
Mult.: 1
Max.: 50

SMD/SMT

LQFP-32

ARM Cortex M33

32 bit

144 MHz

256 kB

64 kB

12 bit

25 I/O

2.7 V

3.6 V

+ 85 C

Tray

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

STM32C092RCT6TR
STMicroelectronics
1: ₱225.15
730May Stock
Bagong Produkto

Mfr. # ng Piyesa
STM32C092RCT6TR

# ng Piyesa ng Mouser
511-STM32C092RCT6TR

Bagong Produkto

STMicroelectronics

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

Datasheet

730May Stock

Cut Tape

₱225.15

₱152.76

₱141.11

₱122.70

Reel

₱82.82

Tingnan

Min.: 1
Mult.: 1

: 1,000

Reel, Cut Tape

ARM Microcontrollers - MCU High performance Arm Cortex-M55 MCU 800MHz 4.2MB SRAM Neural-ART accelerator 600 GOPS NeoChrom GPU JPEG Codec H-264 enc

STM32N647A0H3Q
STMicroelectronics
1: ₱1,221.48
53May Stock
Bagong Produkto

Mfr. # ng Piyesa
STM32N647A0H3Q

# ng Piyesa ng Mouser
511-STM32N647A0H3Q

Bagong Produkto

STMicroelectronics

ARM Microcontrollers - MCU High performance Arm Cortex-M55 MCU 800MHz 4.2MB SRAM Neural-ART accelerator 600 GOPS NeoChrom GPU JPEG Codec H-264 enc

Alamin Pa

Datasheet

53May Stock

₱1,221.48

₱987.12

₱946.02

₱833.75

Tingnan

Min.: 1
Mult.: 1

Tray

ARM Microcontrollers - MCU High-performance DSP DP-FPU Arm Cortex-M7 MCU 2MBytes Flash 1MB RAM 480 MHz CPU

STM32H743ZIT6TR
STMicroelectronics
1: ₱1,134.36
10May Stock
500Inaasahan 9/21/2026
Bagong Produkto

Mfr. # ng Piyesa
STM32H743ZIT6TR

# ng Piyesa ng Mouser
511-STM32H743ZIT6TR

Bagong Produkto

STMicroelectronics

ARM Microcontrollers - MCU High-performance DSP DP-FPU Arm Cortex-M7 MCU 2MBytes Flash 1MB RAM 480 MHz CPU

Alamin Pa

Datasheet

10May Stock

500Inaasahan 9/21/2026

Cut Tape

₱1,134.36

₱861.35

₱825.77

₱727.61

₱692.03

Reel

₱680.99

Available ang MouseReel

Min.: 1
Mult.: 1

: 500

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU Ultra-low-power with FPU Arm Cortex-M33 with Trust Zone, MCU 96 MHz with 512 Kby

STM32U375REY6QTR
STMicroelectronics
1: ₱334.97
162May Stock
Bagong Produkto

Mfr. # ng Piyesa
STM32U375REY6QTR

# ng Piyesa ng Mouser
511-STM32U375REY6QTR

Bagong Produkto

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power with FPU Arm Cortex-M33 with Trust Zone, MCU 96 MHz with 512 Kby

Alamin Pa

Datasheet

162May Stock

Cut Tape

₱334.97

₱254.60

₱234.97

₱212.27

Tingnan

Reel

₱153.38

Min.: 1
Mult.: 1

: 5,000

Reel, Cut Tape

ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash

STM32U375VET6
STMicroelectronics
1: ₱477.92
256May Stock
540Inaasahan 8/13/2026
Bagong Produkto

Mfr. # ng Piyesa
STM32U375VET6

# ng Piyesa ng Mouser
511-STM32U375VET6

Bagong Produkto

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash

Alamin Pa

Datasheet

256May Stock

540Inaasahan 8/13/2026

₱477.92

₱333.74

₱318.41

₱276.69

Tingnan

Min.: 1
Mult.: 1

Tray

ARM Microcontrollers - MCU High performance Arm Cortex-M55 MCU 800MHz 4.2MB SRAM Neural-ART accelerator 600 GOPS NeoChrom GPU JPEG Codec H-264 enc

STM32N647B0H3Q
STMicroelectronics
1: ₱1,292.03
48May Stock
1,008Inaasahan 10/20/2026
Bagong Produkto

Mfr. # ng Piyesa
STM32N647B0H3Q

# ng Piyesa ng Mouser
511-STM32N647B0H3Q

Bagong Produkto

STMicroelectronics

ARM Microcontrollers - MCU High performance Arm Cortex-M55 MCU 800MHz 4.2MB SRAM Neural-ART accelerator 600 GOPS NeoChrom GPU JPEG Codec H-264 enc

Alamin Pa

Datasheet

48May Stock

1,008Inaasahan 10/20/2026

₱1,292.03

₱1,044.18

₱1,001.23

₱882.21

Tingnan

Min.: 1
Mult.: 1

Tray

ARM Microcontrollers - MCU High-performance access line, Arm Cortex-M4 core DSP & FPU, 1,5 MByte of Flash 1

STM32F423MHY3TR
STMicroelectronics
1: ₱825.77
3,098May Stock

Mfr. # ng Piyesa
STM32F423MHY3TR

# ng Piyesa ng Mouser
511-STM32F423MHY3TR

STMicroelectronics

ARM Microcontrollers - MCU High-performance access line, Arm Cortex-M4 core DSP & FPU, 1,5 MByte of Flash 1

Alamin Pa

Datasheet

3,098May Stock

Cut Tape

₱825.77

₱627.61

₱601.84

₱530.06

Tingnan

Reel

₱461.35

Min.: 1
Mult.: 1

: 5,000

SMD/SMT

WLCSP-81

ARM Cortex M4

32 bit

100 MHz

1.5 MB

32 kB

12 bit

60 I/O

1.7 V

3.6 V

+ 125 C

Reel, Cut Tape

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0+ MCU 16 Kbytes Flash 12 Kbytes RAM 48 MHz CPU 2x USART

STM32C031K4U6
STMicroelectronics
1: ₱79.14
2,763May Stock

Mfr. # ng Piyesa
STM32C031K4U6

# ng Piyesa ng Mouser
511-STM32C031K4U6

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0+ MCU 16 Kbytes Flash 12 Kbytes RAM 48 MHz CPU 2x USART

Alamin Pa

Datasheet

2,763May Stock

₱79.14

₱54.97

₱50.37

₱44.17

Tingnan

Min.: 1
Mult.: 1

SMD/SMT

UFQFPN-32

ARM Cortex M0+

32 bit

48 MHz

16 kB

12 kB

12 bit

30 I/O

2 V

3.6 V

+ 85 C

Tray

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0+ 32-bit MCU up to 128KB 144KB RAM 6x USART timers ADC D

STM32G0B1KBT3
STMicroelectronics
1: ₱302.46
1,935May Stock

Mfr. # ng Piyesa
STM32G0B1KBT3

# ng Piyesa ng Mouser
511-STM32G0B1KBT3

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0+ 32-bit MCU up to 128KB 144KB RAM 6x USART timers ADC D

Alamin Pa

Datasheet

1,935May Stock

₱302.46

₱230.06

₱201.23

₱192.03

Tingnan

Min.: 1
Mult.: 1

Tray

ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 MCU TrustZone, 160 MHz 512 Kbytes of Flash

STM32U545CET6Q
STMicroelectronics
1: ₱325.16
2,253May Stock

Mfr. # ng Piyesa
STM32U545CET6Q

# ng Piyesa ng Mouser
511-STM32U545CET6Q

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 MCU TrustZone, 160 MHz 512 Kbytes of Flash

Alamin Pa

Datasheet

2,253May Stock

₱325.16

₱271.17

₱260.74

₱250.92

Tingnan

Min.: 1
Mult.: 1

Tray

ARM Microcontrollers - MCU 32-Bit ARM Cortex M0 64 Kbytes 2.0 - 3.6V

STM32F051R8T6
STMicroelectronics
1: ₱309.20
20,438May Stock

Mfr. # ng Piyesa
STM32F051R8T6

# ng Piyesa ng Mouser
511-STM32F051R8T6

STMicroelectronics

ARM Microcontrollers - MCU 32-Bit ARM Cortex M0 64 Kbytes 2.0 - 3.6V

Alamin Pa

Datasheet

20,438May Stock

₱309.20

₱199.39

₱184.05

₱169.33

Tingnan

Min.: 1
Mult.: 1

SMD/SMT

LQFP-64

ARM Cortex M0

32 bit

48 MHz

64 kB

8 kB

12 bit

55 I/O

2 V

3.6 V

+ 85 C

Tray

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0 Access line MCU 64 Kbytes of Flash 48 MHz CPU & CEC fun

STM32F071V8T7
STMicroelectronics
1: ₱371.17
5,365May Stock

Mfr. # ng Piyesa
STM32F071V8T7

# ng Piyesa ng Mouser
511-STM32F071V8T7

STMicroelectronics

ARM Microcontrollers - MCU Mainstream Arm Cortex-M0 Access line MCU 64 Kbytes of Flash 48 MHz CPU & CEC fun

Alamin Pa

Datasheet

5,365May Stock

₱371.17

₱279.76

₱248.47

₱231.90

Tingnan

Min.: 1
Mult.: 1

SMD/SMT

LQFP-100

ARM Cortex M0

32 bit

48 MHz

64 kB

16 kB

12 bit

87 I/O

2 V

3.6 V

+ 105 C

Tray

ARM Microcontrollers - MCU 32BIT CORTEX M3 64PINS 128KB

STM32F100RBT6B
STMicroelectronics
1: ₱390.19
4,893May Stock

Mfr. # ng Piyesa
STM32F100RBT6B

# ng Piyesa ng Mouser
511-STM32F100RBT6B

STMicroelectronics

ARM Microcontrollers - MCU 32BIT CORTEX M3 64PINS 128KB

Alamin Pa

Datasheet

4,893May Stock

₱390.19

₱300.00

₱277.30

₱245.40

Tingnan

Min.: 1
Mult.: 1

SMD/SMT

LQFP-64

ARM Cortex M3

32 bit

24 MHz

128 kB

8 kB

12 bit

51 I/O

2 V

3.6 V

+ 85 C

Tray

ARM Microcontrollers - MCU ARM 32Bit Value Line 64-Pin 32kB Flash

STM32F100RCT6B
STMicroelectronics
1: ₱456.44
3,771May Stock

Mfr. # ng Piyesa
STM32F100RCT6B

# ng Piyesa ng Mouser
511-STM32F100RCT6B

STMicroelectronics

ARM Microcontrollers - MCU ARM 32Bit Value Line 64-Pin 32kB Flash

Alamin Pa

Datasheet

3,771May Stock

₱456.44

₱351.54

₱325.77

₱289.57

Tingnan

Min.: 1
Mult.: 1

SMD/SMT

LQFP-64

ARM Cortex M3

32 bit

24 MHz

256 kB

24 kB

12 bit

51 I/O

2 V

3.6 V

+ 85 C

Tray

ARM Microcontrollers - MCU 32BIT Cortex M3 128K 20KB RAM 2X12 ADC

STM32F103VBT6
STMicroelectronics
1: ₱393.87
5,593May Stock

Mfr. # ng Piyesa
STM32F103VBT6

# ng Piyesa ng Mouser
511-STM32F103VBT6

STMicroelectronics

ARM Microcontrollers - MCU 32BIT Cortex M3 128K 20KB RAM 2X12 ADC

Alamin Pa

Datasheet

5,593May Stock

₱393.87

₱338.04

₱309.20

₱303.68

Tingnan

Min.: 1
Mult.: 1

SMD/SMT

LQFP-100

ARM Cortex M3

32 bit

72 MHz

128 kB

20 kB

12 bit

100 I/O

2 V

3.6 V

+ 85 C

Tray

ARM Microcontrollers - MCU 32BIT Cortex M3 256kB Flash 100pin

STM32F103VCT6
STMicroelectronics
1: ₱447.24
12,736May Stock

Mfr. # ng Piyesa
STM32F103VCT6

# ng Piyesa ng Mouser
511-STM32F103VCT6

STMicroelectronics

ARM Microcontrollers - MCU 32BIT Cortex M3 256kB Flash 100pin

Alamin Pa

Datasheet

12,736May Stock

₱447.24

₱377.30

₱340.49

₱333.13

Tingnan

Min.: 1
Mult.: 1

SMD/SMT

LQFP-100

ARM Cortex M3

32 bit

72 MHz

256 kB

48 kB

12 bit

80 I/O

2 V

3.6 V

+ 85 C

Tray

ARM Microcontrollers - MCU High-performance advanced line, Arm Cortex-M4 core DSP & FPU, 512 Kbytes of Flas

STM32F429ZET6TR
STMicroelectronics
1: ₱776.08
1,880May Stock

Mfr. # ng Piyesa
STM32F429ZET6TR

# ng Piyesa ng Mouser
511-STM32F429ZET6TR

STMicroelectronics

ARM Microcontrollers - MCU High-performance advanced line, Arm Cortex-M4 core DSP & FPU, 512 Kbytes of Flas

Alamin Pa

Datasheet

1,880May Stock

Cut Tape

₱776.08

₱645.40

₱611.05

₱562.58

Reel

₱501.23

Tingnan

Available ang MouseReel

Min.: 1
Mult.: 1

: 500

SMD/SMT

LQFP-144

ARM Cortex M4

32 bit

180 MHz

512 kB

260 kB

12 bit

114 I/O

1.7 V

3.6 V

+ 85 C

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU High-performance & DSP FPU, ARM Cortex-M7 MCU 1 Mbyte Flash, 216 MHz CPU, Art Ac

STM32F745VGH6
STMicroelectronics
1: ₱1,090.80
6,286May Stock

Mfr. # ng Piyesa
STM32F745VGH6

# ng Piyesa ng Mouser
511-STM32F745VGH6

STMicroelectronics

ARM Microcontrollers - MCU High-performance & DSP FPU, ARM Cortex-M7 MCU 1 Mbyte Flash, 216 MHz CPU, Art Ac

Alamin Pa

Datasheet

6,286May Stock

₱1,090.80

₱866.26

₱798.78

₱748.47

Tingnan

Min.: 1
Mult.: 1

SMD/SMT

TFBGA-100

ARM Cortex M7

32 bit

1 MB

3 x 12 bit

82 I/O

1.7 V

3.6 V

+ 85 C

Tray

ARM Microcontrollers - MCU High-performance & DSP DP-FPU, Arm Cortex-M7 MCU 2MBytes of Flash 1376 KB SRAM,

STM32H7A3LIH6Q
STMicroelectronics
1: ₱1,131.91
26May Stock

Mfr. # ng Piyesa
STM32H7A3LIH6Q

# ng Piyesa ng Mouser
511-STM32H7A3LIH6Q

STMicroelectronics

ARM Microcontrollers - MCU High-performance & DSP DP-FPU, Arm Cortex-M7 MCU 2MBytes of Flash 1376 KB SRAM,

Alamin Pa

Datasheet

26May Stock

₱1,131.91

₱900.00

₱842.34

₱764.42

Tingnan

Min.: 1
Mult.: 1

SMD/SMT

TFBGA-225

ARM Cortex M7

32 bit

280 MHz

2 MB

1.4 MB

2 x 16 bit

168 I/O

1.62 V

3.6 V

+ 85 C

Tray

ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M0+ MCU 16-Kbytes Flash, 32 MHz CPU

STM32L011E4Y6TR
STMicroelectronics
1: ₱112.88
19,252May Stock

Mfr. # ng Piyesa
STM32L011E4Y6TR

# ng Piyesa ng Mouser
511-STM32L011E4Y6TR

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M0+ MCU 16-Kbytes Flash, 32 MHz CPU

Alamin Pa

Datasheet

19,252May Stock

Cut Tape

₱112.88

₱83.44

₱75.46

₱67.49

Tingnan

Reel

₱51.53

Available ang MouseReel

Min.: 1
Mult.: 1

: 5,000

SMD/SMT

WLCSP-25

ARM Cortex M0+

32 bit

32 MHz

16 kB

2 kB

12 bit

21 I/O

1.8 V

3.6 V

+ 85 C

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 512 Kbytes of Flash 32 MHz CPU, MCD, USB, 2xOp

STM32L151VET6
STMicroelectronics
1: ₱691.41
5,078May Stock

Mfr. # ng Piyesa
STM32L151VET6

# ng Piyesa ng Mouser
511-STM32L151VET6

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 512 Kbytes of Flash 32 MHz CPU, MCD, USB, 2xOp

Alamin Pa

Datasheet

5,078May Stock

₱691.41

₱504.91

₱461.35

₱457.67

Tingnan

Min.: 1
Mult.: 1

SMD/SMT

LQFP-100

ARM Cortex M3

32 bit

32 MHz

512 kB

80 kB

12 bit

83 I/O

1.65 V

3.6 V

+ 85 C

Tray

ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 kbytes of Flash , DFSDM

STM32L451CCU6TR
STMicroelectronics
1: ₱336.20
4,795May Stock

Mfr. # ng Piyesa
STM32L451CCU6TR

# ng Piyesa ng Mouser
511-STM32L451CCU6TR

STMicroelectronics

ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 kbytes of Flash , DFSDM

Alamin Pa

Datasheet

4,795May Stock

Cut Tape

₱336.20

₱257.06

₱236.81

₱215.34

Tingnan

Reel

₱186.50

Available ang MouseReel

Min.: 1
Mult.: 1

: 2,500

SMD/SMT

QFN-48

ARM Cortex M4

32 bit

80 MHz

256 kB

160 kB

12 bit

38 I/O

1.71 V

3.6 V

+ 85 C

Reel, Cut Tape, MouseReel

STM32 Mga Microcontroller - MCU

Mga Uri ng Microcontroller - MCU

Customer Service Office

Kumpanya

Mga Mapagkukunan

Suporta

BGA-100
BGA-132
BGA-144
BGA-169
BGA-176
BGA-216
BGA-64
BGA-73
CSP-100
CSP-36
CSP-48
CSP-64
CSP-72
CSP-81
LFBGA-144
LGA-92
LQFP-100
LQFP-128
LQFP-144
LQFP-176

20 MHz
24 MHz
32 MHz
32 MHz, 64 MHz
36 MHz
48 MHz
56 MHz
64 MHz
72 MHz
80 MHz
84 MHz
96 MHz
100 MHz
110 MHz
120 MHz
144 MHz
150 MHz
150 MHz, 300 MHz
160 MHz
168 MHz

0 B
1 KB
8 kB
16 kB
32 kB
64 kB
128 KB
128 kB
192 kB
256 kB
320 kB
384 kB
512 kB
640 kB
768 kB
1 MB
1.5 MB
2 MB
2 Mb
4 MB

2 kB
4 kB
6 kB
8 kB
10 kB
12 kB
16 kB
18 kB
20 kB
24 kB
32 kB
36 kB
40 kB
48 kB
64 kB
64 kB, 64 kB
80 kB
96 kB
112 kB
128 kB

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