COMMERCIAL 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

UPSD3352DV-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

65536

32768

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

24 rpm

e3

UPSD3254BV-24T1T

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

3.6 V

8

3.3

FLATPACK

QFP52,.47SQ

3 V

70 Cel

8051

0 Cel

QUAD

1.75 mm

262144

10 mm

NOT SPECIFIED

NOT SPECIFIED

10 mm

32768

CMOS

3.3 V

Microcontrollers

FLASH

.65 mm

S-PQFP-G80

Not Qualified

24 rpm

ETC9422FP

STMicroelectronics

COMMERCIAL

GULL WING

20

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

4

3/5

SMALL OUTLINE

SO20(UNSPEC)

70 Cel

COP400

0 Cel

TIN LEAD

DUAL

1024

32

CMOS

3 mA

Microcontrollers

MROM

R-PDSO-G20

Not Qualified

.25 rpm

e0

UPSD3234B-40U1

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

40 rpm

ST6387B1/XXX

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

THROUGH-HOLE

42

SDIP

RECTANGULAR

PLASTIC/EPOXY

NO

6 V

0

YES

8

5

IN-LINE, SHRINK PITCH

SDIP42,.6

4.5 V

70 Cel

ST6300

0 Cel

TIN LEAD

YES

DUAL

NO

5.08 mm

20480

15.24 mm

0

8.1 MHz

36.83 mm

256

HCMOS

16 mA

5 V

YES

Microcontrollers

MROM

1.778 mm

R-PDIP-T42

Not Qualified

8 rpm

e0

22

UPSD3234BV-40U1T

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

QUAD

262144

256

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

40 rpm

UPSD3354D-40T1T

STMicroelectronics

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP52,.47SQ

70 Cel

8051

0 Cel

MATTE TIN

QUAD

262144

32768

CMOS

5 V

Microcontrollers

FLASH

.635 mm

S-PQFP-G52

1

Not Qualified

40 rpm

e3

ST6373J2B1/XXX

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

THROUGH-HOLE

42

SDIP

RECTANGULAR

PLASTIC/EPOXY

NO

5.5 V

0

NO

8

5

IN-LINE, SHRINK PITCH

SDIP42,.6

4.5 V

70 Cel

0 Cel

TIN LEAD

YES

DUAL

NO

5.08 mm

15.24 mm

0

8.1 MHz

36.83 mm

CMOS

16 mA

5 V

YES

Microcontrollers

MROM

1.778 mm

R-PDIP-T42

Not Qualified

8 rpm

e0

24

ST7FSCR1E4M1

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

GULL WING

24

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

5.5 V

0

NO

8

5

SMALL OUTLINE

SOP24,.4

4 V

70 Cel

ST72

0 Cel

Nickel/Palladium/Gold (Ni/Pd/Au)

NO

DUAL

NO

2.65 mm

16384

7.5 mm

0

LED, POR, TIMER, WDT

0

8 MHz

30

250

15.4 mm

768

CMOS

15 mA

5 V

NO

Microcontrollers

UART, USB

FLASH

1.27 mm

R-PDSO-G24

3

Not Qualified

8 rpm

e4

8

3

PSD813F5V-15U

STMicroelectronics

COMMERCIAL

GULL WING

64

QFP

SQUARE

PLASTIC/EPOXY

YES

3.3

FLATPACK

QFP64,.6SQ,32

70 Cel

0 Cel

N

QUAD

1048576 Bits

CMOS

3.3 V

Other Microprocessor ICs

.8 mm

S-PQFP-G64

Not Qualified

.0001 Amp

.00000015 ns

ST92195B7B1/XXX

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

THROUGH-HOLE

56

SDIP

RECTANGULAR

PLASTIC/EPOXY

NO

5.5 V

0

YES

16

IN-LINE, SHRINK PITCH

4.5 V

70 Cel

0 Cel

YES

DUAL

NO

6.35 mm

15.24 mm

0

24 MHz

51.75 mm

CMOS

5 V

YES

MROM

1.778 mm

R-PDIP-T56

Not Qualified

24 rpm

28

UPSD3212CV-40T1T

STMicroelectronics

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP52,.47SQ

70 Cel

8051

0 Cel

QUAD

65536

2048

CMOS

3.3 V

Microcontrollers

FLASH

.635 mm

S-PQFP-G52

Not Qualified

40 rpm

Z8610XXAB1

STMicroelectronics

COMMERCIAL

THROUGH-HOLE

28

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

8

5

IN-LINE

DIP28,.6

70 Cel

Z8

0 Cel

TIN LEAD

DUAL

4096

124

CMOS

150 mA

5 V

Microcontrollers

MROM

2.54 mm

R-PDIP-T28

Not Qualified

12 rpm

e0

UPSD3332D-24T1T

STMicroelectronics

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP52,.47SQ

70 Cel

8051

0 Cel

MATTE TIN

QUAD

65536

8192

CMOS

5 V

Microcontrollers

FLASH

.635 mm

S-PQFP-G52

1

Not Qualified

24 rpm

e3

UPSD3332DV-40T1T

STMicroelectronics

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP52,.47SQ

70 Cel

8051

0 Cel

MATTE TIN

QUAD

65536

8192

CMOS

3.3 V

Microcontrollers

FLASH

.635 mm

S-PQFP-G52

1

Not Qualified

40 rpm

e3

ST90E28L1

STMicroelectronics

COMMERCIAL

J BEND

44

QCCJ

SQUARE

CERAMIC

YES

8

5

CHIP CARRIER

LDCC44,.7SQ

70 Cel

ST9

0 Cel

TIN LEAD

QUAD

8192

480

CMOS

40 mA

5 V

Microcontrollers

UVPROM

1.27 mm

S-XQCC-J44

Not Qualified

12 rpm

e0

ST63E89B1

STMicroelectronics

COMMERCIAL

THROUGH-HOLE

42

SDIP

RECTANGULAR

CERAMIC

NO

8

5

IN-LINE, SHRINK PITCH

SDIP42,.6

70 Cel

ST6300

0 Cel

DUAL

4-Ch 6-Bit

20480

384

LED, PWM(6), TIMER(2), WDT

256

CMOS

7-Ch 8-Bit

16 mA

5 V

Microcontrollers

I2C, SPI

UVPROM

1.78 mm

R-XDIP-T42

Not Qualified

.615 rpm

8

UPSD3233A-24U1T

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

QUAD

131072

256

CMOS

5 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

24 rpm

ST9028C1/XX

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

J BEND

44

QCCJ

SQUARE

PLASTIC/EPOXY

YES

5.5 V

14

NO

16

5

CHIP CARRIER

LDCC44,.7SQ

4.5 V

70 Cel

ST9

0 Cel

TIN LEAD

NO

QUAD

YES

4.57 mm

8192

16.5862 mm

8

24 MHz

16.5862 mm

480

CMOS

70 mA

5 V

YES

Microcontrollers

MROM

1.27 mm

S-PQCC-J44

Not Qualified

24 rpm

e0

36

EF68A05P2PLD

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

THROUGH-HOLE

28

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

5.75 V

8

0

NO

8

IN-LINE

4.75 V

70 Cel

1

0 Cel

NO

DUAL

NO

1100

64

116 X 8 SELFTEST ROM; ZEROCROSS DETECTOR

NO

0

6 MHz

1

NMOS

5.25 V

0

NO

0

OTPROM

FIXED POINT

R-PDIP-T28

Not Qualified

6 rpm

NO

8

20

UPSD3234A-40T1F

STMicroelectronics

MICROCONTROLLER, RISC

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP52,.47SQ

70 Cel

8051

0 Cel

MATTE TIN

QUAD

262144

8192

CMOS

5 V

Microcontrollers

FLASH

.635 mm

S-PQFP-G52

1

Not Qualified

40 rpm

e3

ST6380B4/XXX

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

THROUGH-HOLE

42

SDIP

RECTANGULAR

PLASTIC/EPOXY

NO

6 V

0

YES

8

5

IN-LINE, SHRINK PITCH

SDIP42,.6

4.5 V

70 Cel

ST6300

0 Cel

TIN

YES

DUAL

NO

6-Ch 6-Bit

5.08 mm

8192

15.24 mm

384

LED, PWM(6), TIMER(2), WDT

0

8.1 MHz

36.83 mm

256

HCMOS

6-Ch 8-Bit

16 mA

5 V

YES

Microcontrollers

I2C, SPI

MROM

1.778 mm

R-PDIP-T42

Not Qualified

.615 rpm

e3

8

21

UPSD3354D-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

262144

32768

CMOS

5 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

24 rpm

e3

ST92195B3T1/XXX

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

GULL WING

64

LQFP

SQUARE

PLASTIC/EPOXY

YES

5.5 V

0

YES

16

FLATPACK, LOW PROFILE

4.5 V

70 Cel

0 Cel

YES

QUAD

NO

1.6 mm

14 mm

0

24 MHz

14 mm

CMOS

5 V

YES

MROM

.8 mm

S-PQFP-G64

Not Qualified

24 rpm

28

UPSD3312DV-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

65536

2048

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

40 rpm

e3

EF68HC04P3PL

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

THROUGH-HOLE

28

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

6 V

8

0

NO

8

IN-LINE

2 V

70 Cel

1

0 Cel

NO

DUAL

NO

1692

124

356 X 8 SELFTEST ROM

NO

0

12 MHz

1

CMOS

3 mA

5 V

0

NO

0

OTPROM

FIXED POINT

R-PDIP-T28

Not Qualified

12 rpm

YES

8

20

ST9036Q1

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

GULL WING

80

QFP

RECTANGULAR

PLASTIC/EPOXY

NO

YES

5.5 V

8

16

NO

16

5

FLATPACK

QFP80,.7X.9,32

4.5 V

70 Cel

ST9

9

0 Cel

TIN LEAD

YES

QUAD

YES

16384

480

CAPTURE/COMPARE UNIT

NO

8

24 MHz

3

256

CMOS

50 mA

5 V

4

NO

2

Microcontrollers

MROM

.8 mm

FIXED POINT

R-PQFP-G80

Not Qualified

24 rpm

YES

e0

8

56

UPSD3313D-40T1T

STMicroelectronics

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP52,.47SQ

70 Cel

8051

0 Cel

MATTE TIN

QUAD

131072

2048

CMOS

5 V

Microcontrollers

FLASH

.635 mm

S-PQFP-G52

1

Not Qualified

40 rpm

e3

UPSD3352DV-40T1

STMicroelectronics

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP52,.47SQ

70 Cel

8051

0 Cel

MATTE TIN

QUAD

65536

32768

CMOS

3.3 V

Microcontrollers

FLASH

.635 mm

S-PQFP-G52

1

Not Qualified

40 rpm

e3

UPSD3312DV-40T1

STMicroelectronics

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP52,.47SQ

70 Cel

8051

0 Cel

MATTE TIN

QUAD

65536

2048

CMOS

3.3 V

Microcontrollers

FLASH

.635 mm

S-PQFP-G52

1

Not Qualified

40 rpm

e3

UPSD3353D-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

131072

32768

CMOS

5 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

40 rpm

e3

EF6805R3FND

STMicroelectronics

COMMERCIAL

J BEND

44

QCCJ

SQUARE

PLASTIC/EPOXY

YES

8

5.25

CHIP CARRIER

LDCC44,.7SQ

70 Cel

6805

0 Cel

TIN LEAD

QUAD

3776

112

CMOS

5.25 V

Microcontrollers

MROM

1.27 mm

S-PQCC-J44

1.1 rpm

e0

ST6385B1

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

THROUGH-HOLE

42

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

NO

6 V

8

0

NO

8

IN-LINE

4.5 V

70 Cel

1

0 Cel

YES

DUAL

NO

20140

256

336 X 8 SELFTEST ROM; ON CHIP EEPROM 384 X 8; 1.5V DATA RETENTION

NO

0

8 MHz

2

CMOS

16 mA

5 V

0

YES

1

MROM

FIXED POINT

R-PDIP-T42

Not Qualified

8 rpm

YES

8

22

ST7FLITE20B1

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

THROUGH-HOLE

20

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

5.5 V

0

NO

8

IN-LINE

3.3 V

70 Cel

0 Cel

YES

DUAL

NO

5.33 mm

8192

7.62 mm

0

ALSO OPERATES AT 2.4V MIN SUPPLY @8MHZ

TIMER(2)

0

16 MHz

26.16 mm

384

CMOS

7-Ch 13-Bit

5 V

YES

SPI

FLASH

2.54 mm

R-PDIP-T20

Not Qualified

8 rpm

8

15

UPSD3353D-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

32768

CMOS

5 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

24 rpm

e3

EF68A03U4FN

STMicroelectronics

COMMERCIAL

J BEND

44

QCCJ

SQUARE

PLASTIC/EPOXY

YES

8

5

CHIP CARRIER

LDCC44,.7SQ

70 Cel

6800

0 Cel

TIN LEAD

QUAD

192

CMOS

5 V

Microcontrollers

1.27 mm

S-PQCC-J44

Not Qualified

1.5 rpm

e0

ST16301S2

STMicroelectronics

COMMERCIAL

8

5

DIE OR CHIP

70 Cel

ST16

-20 Cel

3072

128

CMOS

15 mA

5 V

Microcontrollers

MROM

Not Qualified

5 rpm

EF6805P6P

STMicroelectronics

COMMERCIAL

THROUGH-HOLE

28

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

8

5.25

IN-LINE

DIP28,.6

70 Cel

6805

0 Cel

TIN LEAD

DUAL

1796

64

CMOS

5.25 V

Microcontrollers

MROM

2.54 mm

R-PDIP-T28

Not Qualified

1 rpm

e0

EF6804J2PD

STMicroelectronics

COMMERCIAL

THROUGH-HOLE

20

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

8

5

IN-LINE

DIP20,.3

70 Cel

6804

0 Cel

TIN LEAD

DUAL

1012

32

CMOS

5 V

Microcontrollers

MROM

2.54 mm

R-PDIP-T20

11 rpm

e0

UPSD3333DV-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

131072

8192

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

1

Not Qualified

40 rpm

e3

UPSD3234AV-24U1T

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

QUAD

262144

256

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

24 rpm

UPSD3234A-40T1

STMicroelectronics

MICROCONTROLLER

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

5.5 V

16

NO

8

5

FLATPACK

QFP52,.47SQ

4.5 V

70 Cel

8051

0 Cel

YES

QUAD

NO

1.75 mm

262144

10 mm

8

40 MHz

NOT SPECIFIED

NOT SPECIFIED

10 mm

8192

CMOS

5 V

YES

Microcontrollers

FLASH

.65 mm

S-PQFP-G52

Not Qualified

40 rpm

41

UPSD3332DV-40T1

STMicroelectronics

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP52,.47SQ

70 Cel

8051

0 Cel

MATTE TIN

QUAD

65536

8192

CMOS

3.3 V

Microcontrollers

FLASH

.635 mm

S-PQFP-G52

1

Not Qualified

40 rpm

e3

UPSD3212CV-40U1T

STMicroelectronics

COMMERCIAL

GULL WING

80

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP80,.55SQ,20

70 Cel

8051

0 Cel

QUAD

65536

2048

CMOS

3.3 V

Microcontrollers

FLASH

.5 mm

S-PQFP-G80

Not Qualified

40 rpm

UPSD3233B-40T1F

STMicroelectronics

MICROCONTROLLER, RISC

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP52,.47SQ

70 Cel

8051

0 Cel

MATTE TIN

QUAD

131072

8192

CMOS

5 V

Microcontrollers

FLASH

.635 mm

S-PQFP-G52

1

Not Qualified

40 rpm

e3

ST92E196B7T4

STMicroelectronics

COMMERCIAL

GULL WING

64

QFP

SQUARE

PLASTIC/EPOXY

YES

8

5

FLATPACK

QFP64,.6SQ,32

70 Cel

ST9

-10 Cel

QUAD

131072

0

DMA, PWM(8), TIMER(2), WDT

3072

CMOS

8-Ch 6-Bit

120 mA

5 V

Microcontrollers

I2C(4), SCI, SPI

UVPROM

.8 mm

S-PQFP-G64

Not Qualified

24 rpm

8

UPSD3352DV-40T1T

STMicroelectronics

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP52,.47SQ

70 Cel

8051

0 Cel

MATTE TIN

QUAD

65536

32768

CMOS

3.3 V

Microcontrollers

FLASH

.635 mm

S-PQFP-G52

1

Not Qualified

40 rpm

e3

UPSD3253AV-24T1

STMicroelectronics

COMMERCIAL

GULL WING

52

QFP

SQUARE

PLASTIC/EPOXY

YES

8

3.3

FLATPACK

QFP52,.47SQ

70 Cel

8051

0 Cel

QUAD

131072

32768

CMOS

25 mA

3.3 V

Microcontrollers

FLASH

.635 mm

S-PQFP-G52

Not Qualified

24 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.