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8-bit Microcontrollers - MCU

8-Bit Microcontrollers are in stock with same-day shipping at Mouser from industry leading manufacturers. Mouser is an authorized distributor for many 8-bit microcontroller manufacturers including Microchip, NXP, Silicon Labs & more.
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Part #

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: $0.925
1,454In Stock

Mfr. Part No.
PIC16F18023-I/ST

Mouser Part No
579-PIC16F18023-I/ST

Microchip Technology

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

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Datasheet

1,454In Stock

$0.925

Min.: 1
Mult.: 1

RISC

3.5 kB

256 B

TSSOP-14

32 MHz

10 bit

12 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 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: $1.37
647In Stock

Mfr. Part No.
PIC18F04Q20-E/SL

Mouser Part No
579-PIC18F04Q20-E/SL

Microchip Technology

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

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Datasheet

647In Stock

$1.37

Min.: 1
Mult.: 1

PIC18

16 kB

1 kB

SOIC-14

64 MHz

10 bit

11 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 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: $1.62
603In Stock

Mfr. Part No.
PIC18F15Q20-E/SS

Mouser Part No
579-PIC18F15Q20-E/SS

Microchip Technology

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

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Datasheet

603In Stock

$1.62

Min.: 1
Mult.: 1

PIC18

32 kB

2 kB

SSOP-20

64 MHz

10 bit

16 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 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/REB
Microchip Technology
1: $1.67
484In Stock

Mfr. Part No.
PIC18F15Q20-E/REB

Mouser Part No
579-PIC18F15Q20-EREB

Microchip Technology

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

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Datasheet

484In Stock

$1.67

Min.: 1
Mult.: 1

PIC18

32 kB

2 kB

VQFN-20

64 MHz

10 bit

16 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Tray

8-bit Microcontrollers - MCU 32KB Flash, 2KB RAM, 512bytes EEPROM, MVIO, 10b ADC2, 8b DAC, ACP, Comp, PWM,

PIC18F25Q24-E/SS
Microchip Technology
1: $1.94
467In Stock

Mfr. Part No.
PIC18F25Q24-E/SS

Mouser Part No
579-PIC18F25Q24ESS

Microchip Technology

8-bit Microcontrollers - MCU 32KB Flash, 2KB RAM, 512bytes EEPROM, MVIO, 10b ADC2, 8b DAC, ACP, Comp, PWM,

Learn More

Datasheet

467In Stock

$1.94

Min.: 1
Mult.: 1

RISC

32 kB

2 kB

SSOP-28

64 MHz

10 bit

24 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 32KB Flash, 2KB RAM, 512bytes EEPROM, MVIO, 10b ADC2, 8b DAC, ACP, Comp, PWM,

PIC18F25Q24-I/SS
Microchip Technology
1: $1.80
414In Stock

Mfr. Part No.
PIC18F25Q24-I/SS

Mouser Part No
579-PIC18F25Q24ISS

Microchip Technology

8-bit Microcontrollers - MCU 32KB Flash, 2KB RAM, 512bytes EEPROM, MVIO, 10b ADC2, 8b DAC, ACP, Comp, PWM,

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Datasheet

414In Stock

$1.80

Min.: 1
Mult.: 1

RISC

32 kB

2 kB

SSOP-28

64 MHz

10 bit

24 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

Tube

8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 512bytes EEPROM, MVIO, 10b ADC2, 8b DAC, ACP, Comp, PWM,

PIC18F26Q24-E/SS
Microchip Technology
1: $2.14
404In Stock

Mfr. Part No.
PIC18F26Q24-E/SS

Mouser Part No
579-PIC18F26Q24ESS

Microchip Technology

8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 512bytes EEPROM, MVIO, 10b ADC2, 8b DAC, ACP, Comp, PWM,

Learn More

Datasheet

404In Stock

$2.14

Min.: 1
Mult.: 1

RISC

64 kB

4 kB

SSOP-28

64 MHz

10 bit

24 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 512bytes EEPROM, MVIO, 10b ADC2, 8b DAC, ACP, Comp, PWM,

PIC18F46Q24-E/P
Microchip Technology
1: $5.25
191In Stock

Mfr. Part No.
PIC18F46Q24-E/P

Mouser Part No
579-PIC18F46Q24EP

Microchip Technology

8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 512bytes EEPROM, MVIO, 10b ADC2, 8b DAC, ACP, Comp, PWM,

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Datasheet

191In Stock

$5.25

Min.: 1
Mult.: 1

RISC

64 kB

4 kB

PDIP-40

64 MHz

10 bit

35 I/O

1.8 V

5.5 V

Through Hole

8 bit

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 512bytes EEPROM, MVIO, 10b ADC2, 8b DAC, ACP, Comp, PWM,

PIC18F56Q24-E/6LX
Microchip Technology
1: $2.79
366In Stock

Mfr. Part No.
PIC18F56Q24-E/6LX

Mouser Part No
579-PIC18F56Q24E6LX

Microchip Technology

8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 512bytes EEPROM, MVIO, 10b ADC2, 8b DAC, ACP, Comp, PWM,

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Datasheet

366In Stock

$2.79

Min.: 1
Mult.: 1

RISC

64 kB

4 kB

VQFN-48

64 MHz

10 bit

43 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 512bytes EEPROM, MVIO, 10b ADC2, 8b DAC, ACP, Comp, PWM,

PIC18F56Q24-E/PT
Microchip Technology
1: $2.73
467In Stock

Mfr. Part No.
PIC18F56Q24-E/PT

Mouser Part No
579-PIC18F56Q24EPT

Microchip Technology

8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 512bytes EEPROM, MVIO, 10b ADC2, 8b DAC, ACP, Comp, PWM,

Learn More

Datasheet

467In Stock

$2.73

Min.: 1
Mult.: 1

RISC

64 kB

4 kB

TQFP-48

64 MHz

10 bit

43 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Tray

8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 256B EEPROM, 10b ADC2, 5b DAC, Comp, PWM, CCP, CWG, HLT, WWDT, SCAN/CRC, ZCD, PPS, EUSART, SPI/I2C, IDLE/DOZE/PMD

PIC18LF66K40T-I/PT
Microchip Technology
1: $3.69
966In Stock

Mfr. Part No.
PIC18LF66K40T-I/PT

Mouser Part No
579-IC18LF66K40TI/PT

Microchip Technology

8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 256B EEPROM, 10b ADC2, 5b DAC, Comp, PWM, CCP, CWG, HLT, WWDT, SCAN/CRC, ZCD, PPS, EUSART, SPI/I2C, IDLE/DOZE/PMD

Learn More

Datasheet

966In Stock

Cut Tape

$3.69

Reel

$3.69

Min.: 1
Mult.: 1

: 1,200

PIC18

64 kB

3.47 kB

TQFP-64

64 MHz

10 bit

60 I/O

1.8 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

PIC18(L)F6xK40

Reel, Cut Tape

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F32G-D-QFN24R
Silicon Labs
1: $4.11
9,748In Stock

Mfr. Part No.
EFM8BB31F32G-D-QFN24R

Mouser Part No
634-EF8BB31F32GDF24R

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

9,748In Stock

Cut Tape

$4.11

$2.68

$2.46

$2.11

View

Reel

$1.51

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

CIP-51 8051

32 kB

2.3 kB

QFN-24

50 MHz

10 bit, 12 bit

20 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU

EFM8LB11F32ES0-C-QFN24R
Silicon Labs
1: $5.22
1,499In Stock

Mfr. Part No.
EFM8LB11F32ES0-C-QFN24R

Mouser Part No
634-LB11F32ES0CFN24R

Silicon Labs

8-bit Microcontrollers - MCU

Learn More

Datasheet

1,499In Stock

Cut Tape

$5.22

$3.54

$3.28

$2.84

Reel

$1.94

View

Min.: 1
Mult.: 1

: 1,500

CIP-51 8051

32 kB

2.25 kB

QFN-24

72 MHz

10 bit/12 bit/14 bit

20 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

EFM8LB1

Reel, Cut Tape

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

AVR16DU32-I/RXB
Microchip Technology
1: $1.77
445In Stock

Mfr. Part No.
AVR16DU32-I/RXB

Mouser Part No
579-AVR16DU32-I/RXB

Microchip Technology

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

Learn More

Datasheet

445In Stock

$1.77

$1.50

Min.: 1
Mult.: 1

16 kB

2 kB

VQFN-32

24 MHz

10 bit

25 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU 16KB, RWW, 2KB RAM, 48p, 20MHz, CFD, 12b ADC, PGA, 2xComp, DAC, 3xUART, SPI, TWI

AVR16EA48-I/6LX
Microchip Technology
1: $1.74
393In Stock

Mfr. Part No.
AVR16EA48-I/6LX

Mouser Part No
579-AVR16EA48-I/6LX

Microchip Technology

8-bit Microcontrollers - MCU 16KB, RWW, 2KB RAM, 48p, 20MHz, CFD, 12b ADC, PGA, 2xComp, DAC, 3xUART, SPI, TWI

Learn More

Datasheet

393In Stock

$1.74

Min.: 1
Mult.: 1

16 kB

2 kB

VQFN-48

20 MHz

12 bit

42 I/O

1.8 V

5.5 V

SMD/SMT

8 bit/16 bit

- 40 C

+ 85 C

AVR16EA28/32/48

Tube

8-bit Microcontrollers - MCU 16KB RWW,2KB RAM,20MHz,12-bit ADC,PGA,UART,SPI,I2C,2xTCB,TCEX,TCF,WEX

AVR16EB28-E/SP
Microchip Technology
1: $3.28
271In Stock

Mfr. Part No.
AVR16EB28-E/SP

Mouser Part No
579-AVR16EB28-E/SP

Microchip Technology

8-bit Microcontrollers - MCU 16KB RWW,2KB RAM,20MHz,12-bit ADC,PGA,UART,SPI,I2C,2xTCB,TCEX,TCF,WEX

Learn More

Datasheet

271In Stock

$3.28

Min.: 1
Mult.: 1

AVR

16 kB

2 kB

SPDIP-28

20 MHz

12 bit

23 I/O

1.8 V

5.5 V

Through Hole

8 bit

- 40 C

+ 125 C

Tube

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

AVR32DU20-I/REB
Microchip Technology
1: $1.63
379In Stock

Mfr. Part No.
AVR32DU20-I/REB

Mouser Part No
579-AVR32DU20-I/REB

Microchip Technology

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

Learn More

Datasheet

379In Stock

$1.63

$1.37

Min.: 1
Mult.: 1

32 kB

4 kB

VQFN-20

24 MHz

10 bit

15 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

Tray

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

PIC16F18013-I/MF
Microchip Technology
1: $0.87
920In Stock

Mfr. Part No.
PIC16F18013-I/MF

Mouser Part No
579-PIC16F18013-I/MF

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

920In Stock

$0.87

Min.: 1
Mult.: 1

PIC

3.5 kB

256 B

DFN-8

32 MHz

10 bit

5 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

Tube

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

PIC16F18024-I/MG
Microchip Technology
1: $0.966
917In Stock

Mfr. Part No.
PIC16F18024-I/MG

Mouser Part No
579-PIC16F18024-I/MG

Microchip Technology

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

Learn More

Datasheet

917In Stock

$0.966

Min.: 1
Mult.: 1

RISC

7 kB

512 B

QFN-16

32 MHz

10 bit

12 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

Tube

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

PIC16F18024-I/ST
Microchip Technology
1: $0.966
762In Stock

Mfr. Part No.
PIC16F18024-I/ST

Mouser Part No
579-PIC16F18024-I/ST

Microchip Technology

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

Learn More

Datasheet

762In Stock

$0.966

Min.: 1
Mult.: 1

RISC

7 kB

512 B

TSSOP-14

32 MHz

10 bit

12 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 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,

PIC18F14Q20-E/SS
Microchip Technology
1: $1.47
667In Stock

Mfr. Part No.
PIC18F14Q20-E/SS

Mouser Part No
579-PIC18F14Q20-E/SS

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

667In Stock

$1.47

Min.: 1
Mult.: 1

PIC18

16 kB

1 kB

SSOP-20

64 MHz

10 bit

16 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 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-I/SO
Microchip Technology
1: $1.47
615In Stock

Mfr. Part No.
PIC18F14Q20-I/SO

Mouser Part No
579-PIC18F14Q20-I/SO

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

615In Stock

$1.47

Min.: 1
Mult.: 1

PIC18

16 kB

1 kB

SOIC-20

64 MHz

10 bit

16 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

Tube

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

PIC18F15Q20-I/SO
Microchip Technology
1: $1.59
594In Stock

Mfr. Part No.
PIC18F15Q20-I/SO

Mouser Part No
579-PIC18F15Q20-I/SO

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

594In Stock

$1.59

Min.: 1
Mult.: 1

PIC18

32 kB

2 kB

SOIC-20

64 MHz

10 bit

16 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

Tube

8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 512bytes EEPROM, MVIO, 10b ADC2, 8b DAC, ACP, Comp, PWM,

PIC18F46Q24-E/MP
Microchip Technology
1: $2.52
363In Stock

Mfr. Part No.
PIC18F46Q24-E/MP

Mouser Part No
579-PIC18F46Q24EMP

Microchip Technology

8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 512bytes EEPROM, MVIO, 10b ADC2, 8b DAC, ACP, Comp, PWM,

Learn More

Datasheet

363In Stock

$2.52

Min.: 1
Mult.: 1

RISC

64 kB

4 kB

QFN-40

64 MHz

10 bit

35 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 8-Bit MCU 3.5K Flash 256 RAM, 16-bit PWM

PIC12LF1572-I/RF
Microchip Technology
1: $1.14
3,525In Stock

Mfr. Part No.
PIC12LF1572-I/RF

Mouser Part No
579-PIC12LF1572-I/RF

Microchip Technology

8-bit Microcontrollers - MCU 8-Bit MCU 3.5K Flash 256 RAM, 16-bit PWM

Datasheet

3,525In Stock

$1.14

Min.: 1
Mult.: 1

PIC12

3.5 kB

256 B

UDFN-8

32 MHz

10 bit

6 I/O

1.8 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

PIC12(L)F157x

Tube

8-bit Microcontrollers - MCU

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8051
8052
1T 8051
4T 8051
78K0
80C188
80C52
870/C
ARM Cortex-M4F
AVR
CIP-51 8051
eZ8
eZ80
HC05
HC08
M68HC08
M8C
nX-U8/100
PIC
PIC10

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
7 kB
7.2 kB
8 kB
10 kB
12 kB
14 kB

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

BGA-49
CSP-16
DFN-16
DFN-6
DFN-8
DIP-14
DIP-18
DIP-20
DIP-28
DIP-8
LFCSP-56
LQFP-100
LQFP-32
LQFP-44
LQFP-48
LQFP-52
LQFP-64
LQFP-80
MLF-10
MLF-20

1 MHz
1.2 MHz
1.3 MHz
1.57 MHz
2.1 MHz
4 MHz
4.2 MHz
5 MHz
7.3728 MHz
8 MHz
8.2 MHz
8.4 MHz
10 MHz
12 MHz
12.58 MHz
14 MHz
16 MHz
16.78 MHz
18 MHz
20 MHz

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 I/O

900 mV
1.6 V
1.62 V
1.65 V
1.7 V
1.71 V
1.8 V
2 V
2.15 V
2.2 V
2.3 V
2.35 V
2.4 V
2.5 V
2.65 V
2.7 V
2.7 V, 4.5 V
2.7 V, 4.75 V
2.8 V
2.9 V

1.89 V
1.9 V
1.98 V
2.2 V
2.3 V
2.7 V
3.3 V
3.3 V, 5.5 V
3.6 V
3.6 V, 5.25 V
3.6 V, 5.5 V
3.7 V
3.8 V
4 V
4.5 V
5 V
5.25 V
5.5 V
6 V
6.25 V

68HC705P6A
78K0/Ix2
78K0/Kx2
78K0/Kx2-A
78K0/Kx2-C
78K0/Kx2-L
78K0/Lx3
80C
89C
89LP
89LS
89S
ADUC812
ADUC814
ADUC816
ADUC824
ADUC831
ADUC832
ADUC834
ADUC836