80 Microcontrollers 2,400+

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Part RoHS Manufacturer Peripheral IC Type Temperature Grade Terminal Form No. of Terminals Package Code Package Shape Package Body Material Integrated Cache Surface Mount Maximum Supply Voltage On Chip Data RAM Width Screening Level Address Bus Width DAC Channels Bit Size Power Supplies (V) Package Style (Meter) Package Equivalence Code Minimum Supply Voltage Maximum Operating Temperature CPU Family No. of External Interrupts Minimum Operating Temperature Terminal Finish ADC Channels Ultraviolet Erasable Terminal Position DMA Channels Digital To Analog Convertors Maximum Seated Height ROM Words RAM Words Width Data EEPROM Size Additional Features Boundary Scan Peripherals External Data Bus Width Maximum Clock Frequency Maximum Time At Peak Reflow Temperature (s) Peak Reflow Temperature (C) Length Total Dose (V) ROM Bits Size No. of Timers RAM Bytes Technology Analog To Digital Convertors Maximum Supply Current Minimum Time Nominal Supply Voltage No. of DMA Channels PWM Channels No. of Serial I/Os Sub-Category Connectivity ROM Programmability Terminal Pitch Format JESD-30 Code Moisture Sensitivity Level (MSL) Qualification Speed Low Power Mode JESD-609 Code Maximum Standby Current On Chip Program ROM Width No. of I/O Lines Maximum Access Time

UPSD3234B-24U1

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

QUAD

262144

256

CMOS

5 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

24 rpm

UPSD3354DV-24U6

STMicroelectronics

INDUSTRIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

85 Cel

8051

-40 Cel

MATTE TIN

QUAD

262144

32768

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

24 rpm

e3

PSD4135G2V-70UT

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

GULL WING

80

LFQFP

SQUARE

PLASTIC/EPOXY

YES

3.6 V

16

NO

16

FLATPACK, LOW PROFILE, FINE PITCH

3 V

70 Cel

0 Cel

NO

QUAD

NO

1.6 mm

12 mm

16

12 mm

CMOS

3.3 V

NO

FLASH

.5 mm

S-PQFP-G80

Not Qualified

52

UPSD3312DV-24U6T

STMicroelectronics

INDUSTRIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

85 Cel

8051

-40 Cel

MATTE TIN

QUAD

65536

2048

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

24 rpm

e3

ST90135M4T6

STMicroelectronics

MICROCONTROLLER

INDUSTRIAL

GULL WING

80

LQFP

SQUARE

PLASTIC/EPOXY

YES

5.5 V

16

NO

16

3/5

FLATPACK, LOW PROFILE

QFP80,.64SQ

4.5 V

85 Cel

ST9

-40 Cel

NICKEL PALLADIUM GOLD

YES

QUAD

YES

1.6 mm

16384

14 mm

ALSO OPERATES AT 2.7 TO 5.5V SUPPLY

8

24 MHz

14 mm

512

CMOS

45 mA

5 V

YES

Microcontrollers

MROM

.65 mm

S-PQFP-G80

Not Qualified

24 rpm

e4

67

UPSD3313DV-24U1T

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

MATTE TIN

QUAD

131072

2048

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

24 rpm

e3

UPSD3233A-40U6T

STMicroelectronics

INDUSTRIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP80,.55SQ,20

85 Cel

8051

-40 Cel

QUAD

131072

256

CMOS

5 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

40 rpm

UPSD3433E-40U6

STMicroelectronics

MICROCONTROLLER

INDUSTRIAL

GULL WING

80

LFQFP

SQUARE

PLASTIC/EPOXY

YES

5.5 V

16

NO

8

3.3,5

FLATPACK, LOW PROFILE, FINE PITCH

QFP80,.55SQ,20

4.5 V

85 Cel

8051

-40 Cel

TIN

YES

QUAD

NO

1.6 mm

131072

12 mm

ALSO OPERATES AT 5V SUPPLY

8

40 MHz

12 mm

8192

CMOS

5 V

YES

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

40 rpm

e3

46

ST7MC2M9T3

STMicroelectronics

MICROCONTROLLER

GULL WING

80

LQFP

SQUARE

UNSPECIFIED

YES

5.5 V

0

8

FLATPACK

4.5 V

NICKEL PALLADIUM GOLD

YES

QUAD

NO

14 mm

0

16 MHz

14 mm

CMOS

5 V

YES

.65 mm

S-XQFP-G80

Not Qualified

16 rpm

e4

56

UPSD3333DV-24U1T

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

MATTE TIN

QUAD

131072

8192

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

24 rpm

e3

UPSD3354DV-40U1T

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

MATTE TIN

QUAD

262144

32768

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

40 rpm

e3

ST90158M9Q6

STMicroelectronics

MICROCONTROLLER

INDUSTRIAL

GULL WING

80

QFP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

16

NO

16

3/5

FLATPACK

QFP80,.7X.9,32

4.5 V

85 Cel

ST9

-40 Cel

NICKEL PALLADIUM GOLD

YES

QUAD

YES

3.4 mm

65536

14 mm

ALSO OPERATES AT 2.7 TO 5.5V SUPPLY

8

5 MHz

20 mm

2048

CMOS

40 mA

5 V

YES

Microcontrollers

MROM

.8 mm

R-PQFP-G80

Not Qualified

24 rpm

e4

67

UPSD3254AV-24U1

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

QUAD

262144

32768

CMOS

25 mA

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

24 rpm

ST90158M7Q6

STMicroelectronics

MICROCONTROLLER

INDUSTRIAL

GULL WING

80

QFP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

16

NO

16

3/5

FLATPACK

QFP80,.7X.9,32

4.5 V

85 Cel

ST9

-40 Cel

NICKEL PALLADIUM GOLD

YES

QUAD

YES

3.4 mm

49152

14 mm

ALSO OPERATES AT 2.7 TO 5.5V SUPPLY

8

5 MHz

20 mm

1536

CMOS

40 mA

5 V

YES

Microcontrollers

MROM

.8 mm

R-PQFP-G80

Not Qualified

24 rpm

e4

67

UPSD3254A-24U6

STMicroelectronics

INDUSTRIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP80,.55SQ,20

85 Cel

8051

-40 Cel

QUAD

262144

32768

CMOS

62 mA

5 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

24 rpm

PSD4135G2V-90UIT

STMicroelectronics

MICROCONTROLLER

INDUSTRIAL

GULL WING

80

LFQFP

SQUARE

PLASTIC/EPOXY

YES

3.6 V

16

NO

16

3.3

FLATPACK, LOW PROFILE, FINE PITCH

QFP80,.55SQ,20

3 V

85 Cel

-40 Cel

NO

N

QUAD

NO

1.6 mm

12 mm

16

NOT SPECIFIED

NOT SPECIFIED

12 mm

4194304 Bits

CMOS

3.3 V

NO

Other uPs/uCs/Peripheral ICs

FLASH

.5 mm

S-PQFP-G80

Not Qualified

.0001 Amp

52

.00000009 ns

UPSD3234A-40U6T

STMicroelectronics

MICROCONTROLLER

INDUSTRIAL

GULL WING

80

LQFP

SQUARE

PLASTIC/EPOXY

NO

YES

5.5 V

12

NO

8

FLATPACK, LOW PROFILE

QFP80,.55SQ,20

4.5 V

85 Cel

8051

2

-40 Cel

Matte Tin (Sn)

YES

QUAD

NO

1.6 mm

262144

4096

12 mm

IT ALSO HAS 2ND FLASH MEMORY: 32K BYTES

YES

POR; PWM(5); TIMER(3); WDT

8

12 mm

CMOS

4-Ch 8-Bit

62 mA

5 V

YES

I2C; UART(2); USB

FLASH

.5 mm

FIXED POINT

S-PQFP-G80

1

Not Qualified

40 rpm

YES

e3

8

46

UPSD3334DV-40U1T

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

MATTE TIN

QUAD

262144

8192

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

40 rpm

e3

UPSD3253AV-24U1

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

QUAD

131072

32768

CMOS

25 mA

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

24 rpm

UPSD3233AV-40U6

STMicroelectronics

INDUSTRIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

85 Cel

8051

-40 Cel

QUAD

131072

256

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

40 rpm

UPSD3254B-24U6

STMicroelectronics

INDUSTRIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP80,.55SQ,20

85 Cel

8051

-40 Cel

QUAD

262144

32768

CMOS

62 mA

5 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

24 rpm

UPSD3353DV-24U1T

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

MATTE TIN

QUAD

131072

32768

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

24 rpm

e3

UPSD3314D-40U1

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

MATTE TIN

QUAD

262144

2048

CMOS

5 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

40 rpm

e3

UPSD3254AV-40U6T

STMicroelectronics

INDUSTRIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

85 Cel

8051

-40 Cel

QUAD

262144

32768

CMOS

25 mA

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

40 rpm

ST90R52GQ1

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

RECTANGULAR

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP80,.7X.9,32

70 Cel

ST9

0 Cel

TIN LEAD

QUAD

224

CMOS

53 mA

5 V

Microcontrollers

.8 mm

R-PQFP-G80

Not Qualified

16 rpm

e0

UPSD3212C-40U1

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

QUAD

65536

2048

CMOS

5 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

40 rpm

UPSD3234A-24U1

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

QUAD

262144

256

CMOS

5 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

24 rpm

UPSD3334DV-40U6T

STMicroelectronics

MICROCONTROLLER

INDUSTRIAL

GULL WING

80

LFQFP

SQUARE

PLASTIC/EPOXY

YES

3.6 V

12

NO

8

3.3

FLATPACK, LOW PROFILE, FINE PITCH

QFP80,.55SQ,20

3 V

85 Cel

8051

-40 Cel

YES

QUAD

NO

1.6 mm

262144

14 mm

8

40 MHz

NOT SPECIFIED

NOT SPECIFIED

14 mm

8192

CMOS

3.3 V

YES

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

40 rpm

41

UPSD3253AV-24U1T

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

QUAD

131072

32768

CMOS

25 mA

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

24 rpm

UPSD3312DV-24U6

STMicroelectronics

INDUSTRIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

85 Cel

8051

-40 Cel

MATTE TIN

QUAD

65536

2048

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

24 rpm

e3

UPSD3313D-24U1

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

MATTE TIN

QUAD

131072

2048

CMOS

5 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

24 rpm

e3

ST90T158M9LVT6

STMicroelectronics

MICROCONTROLLER

INDUSTRIAL

GULL WING

80

LQFP

SQUARE

PLASTIC/EPOXY

YES

3.3 V

16

NO

16

3

FLATPACK, LOW PROFILE

QFP80,.64SQ

2.7 V

85 Cel

ST9

-40 Cel

NICKEL PALLADIUM GOLD

YES

QUAD

YES

1.6 mm

65536

14 mm

8

5 MHz

14 mm

2048

CMOS

35 mA

3 V

YES

Microcontrollers

OTPROM

.65 mm

S-PQFP-G80

Not Qualified

16 rpm

e4

67

UPSD3233AV-40U1

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

QUAD

131072

256

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

40 rpm

UPSD3334DV-40U6

STMicroelectronics

MICROCONTROLLER

INDUSTRIAL

GULL WING

80

LFQFP

SQUARE

PLASTIC/EPOXY

YES

3.6 V

12

NO

8

3.3

FLATPACK, LOW PROFILE, FINE PITCH

QFP80,.55SQ,20

3 V

85 Cel

8051

-40 Cel

MATTE TIN

YES

QUAD

NO

1.6 mm

262144

12 mm

8

40 MHz

12 mm

8192

CMOS

3.3 V

YES

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

40 rpm

e3

46

UPSD3434EB40U6

STMicroelectronics

MICROCONTROLLER

INDUSTRIAL

GULL WING

80

LFQFP

SQUARE

PLASTIC/EPOXY

YES

5.5 V

16

NO

8

3.3,5

FLATPACK, LOW PROFILE, FINE PITCH

QFP80,.55SQ,20

4.5 V

85 Cel

8051

-40 Cel

MATTE TIN

YES

QUAD

NO

1.6 mm

262144

12 mm

ALSO OPERATES AT 5V SUPPLY

8

40 MHz

12 mm

8192

CMOS

5 V

YES

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

40 rpm

e3

46

UPSD3234BV-40U6

STMicroelectronics

INDUSTRIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

85 Cel

8051

-40 Cel

QUAD

262144

256

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

40 rpm

ST90R51

STMicroelectronics

MICROCONTROLLER

GULL WING

80

QFP

RECTANGULAR

PLASTIC/EPOXY

YES

24

NO

16

FLATPACK

NO

QUAD

YES

8

12 MHz

CMOS

YES

R-PQFP-G80

Not Qualified

12 rpm

54

UPSD3233AV-24U1

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

QUAD

131072

256

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

24 rpm

ST9036Q1/XX

STMicroelectronics

MICROCONTROLLER

INDUSTRIAL

GULL WING

80

QFP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

16

NO

16

5

FLATPACK

QFP80(UNSPEC)

4.5 V

85 Cel

ST9

-40 Cel

TIN LEAD

YES

QUAD

YES

3.4 mm

8192

14 mm

8

12 MHz

20 mm

480

HCMOS

70 mA

5 V

NO

Microcontrollers

MROM

.8 mm

R-PQFP-G80

Not Qualified

12 rpm

e0

56

PSD4135G2V-70UIT

STMicroelectronics

MICROCONTROLLER

INDUSTRIAL

GULL WING

80

LFQFP

SQUARE

PLASTIC/EPOXY

YES

3.6 V

16

NO

16

FLATPACK, LOW PROFILE, FINE PITCH

3 V

85 Cel

-40 Cel

NO

QUAD

NO

1.6 mm

12 mm

16

12 mm

CMOS

3.3 V

NO

FLASH

.5 mm

S-PQFP-G80

Not Qualified

52

SPC572L64F2BC4AY

STMicroelectronics

MICROCONTROLLER, RISC

GULL WING

80

HLFQFP

SQUARE

YES

5.5 V

0

32

FLATPACK, HEAT SINK/SLUG, LOW PROFILE, FINE PITCH

4.5 V

YES

QUAD

YES

10 mm

0

40 MHz

10 mm

5 V

NO

.4 mm

64 rpm

SPC572L60F2BC6AR

STMicroelectronics

MICROCONTROLLER, RISC

GULL WING

80

HLFQFP

SQUARE

YES

5.5 V

0

32

FLATPACK, HEAT SINK/SLUG, LOW PROFILE, FINE PITCH

4.5 V

YES

QUAD

YES

10 mm

0

40 MHz

NOT SPECIFIED

NOT SPECIFIED

10 mm

5 V

NO

.4 mm

80 rpm

SPC572L60F2C6FAY

STMicroelectronics

MICROCONTROLLER, RISC

GULL WING

80

HTFQFP

SQUARE

YES

5.5 V

0

32

FLATPACK, HEAT SINK/SLUG, THIN PROFILE, FINE PITCH

4.5 V

YES

QUAD

YES

10 mm

0

40 MHz

10 mm

CMOS

5 V

YES

.4 mm

80 rpm

62

SPC572L64F2C6FAY

STMicroelectronics

MICROCONTROLLER, RISC

GULL WING

80

HTFQFP

SQUARE

YES

5.5 V

0

32

FLATPACK, HEAT SINK/SLUG, THIN PROFILE, FINE PITCH

4.5 V

YES

QUAD

YES

10 mm

0

40 MHz

10 mm

CMOS

5 V

YES

.4 mm

80 rpm

62

SPC572L60F2BC4AY

STMicroelectronics

MICROCONTROLLER, RISC

GULL WING

80

HLFQFP

SQUARE

YES

5.5 V

0

32

FLATPACK, HEAT SINK/SLUG, LOW PROFILE, FINE PITCH

4.5 V

YES

QUAD

YES

10 mm

0

40 MHz

10 mm

5 V

NO

.4 mm

64 rpm

SPC572L64F2BC4AR

STMicroelectronics

MICROCONTROLLER, RISC

GULL WING

80

HLFQFP

SQUARE

YES

5.5 V

0

32

FLATPACK, HEAT SINK/SLUG, LOW PROFILE, FINE PITCH

4.5 V

YES

QUAD

YES

10 mm

0

40 MHz

10 mm

5 V

NO

.4 mm

64 rpm

SPC572L64F2C6FAR

STMicroelectronics

MICROCONTROLLER, RISC

GULL WING

80

HTFQFP

SQUARE

YES

5.5 V

0

32

FLATPACK, HEAT SINK/SLUG, THIN PROFILE, FINE PITCH

4.5 V

YES

QUAD

YES

10 mm

0

40 MHz

10 mm

CMOS

5 V

YES

.4 mm

80 rpm

62

SPC572L64F2BC6AY

STMicroelectronics

MICROCONTROLLER, RISC

GULL WING

80

HLFQFP

SQUARE

YES

5.5 V

0

32

FLATPACK, HEAT SINK/SLUG, LOW PROFILE, FINE PITCH

4.5 V

YES

QUAD

YES

10 mm

0

40 MHz

NOT SPECIFIED

NOT SPECIFIED

10 mm

5 V

NO

.4 mm

80 rpm

Microcontrollers

A microcontroller is a type of integrated circuit (IC) that is designed to control a specific task or set of tasks within a larger system. Unlike a microprocessor, which is designed to be a general-purpose computing device, a microcontroller is optimized for embedded applications that require real-time control and processing.

Microcontrollers typically contain a processor core, memory, input/output (I/O) ports, and various peripheral devices, all on a single chip. The processor core is usually a low-power, low-speed version of a microprocessor, such as an 8-bit or 16-bit processor. The memory on a microcontroller includes both volatile and non-volatile memory, such as random-access memory (RAM) and flash memory, respectively. The I/O ports are used to interface with external devices such as sensors, switches, and displays.

Microcontrollers are used in a wide range of applications, including automotive systems, medical devices, consumer electronics, and industrial automation. They are particularly well-suited for applications that require real-time control and processing, such as motor control, temperature sensing, and data acquisition.

One of the key advantages of microcontrollers is their low cost and small size. Because all of the necessary components are integrated onto a single chip, microcontrollers are much smaller and less expensive than other types of computing devices. This makes them ideal for use in small, battery-powered devices such as handheld calculators and remote controls.