MS51 Industrial Series Microcontrollers (MCUs)

Nuvoton MS51 Industrial Series Microcontrollers (MCUs) are 8-bit, high-performance, embedded Flash type, and 80C51 standard compatible MCUs based on a 1T 8051 core. These MCUs feature 32Kbyte of Flash memory, up to 2Kbyte of SRAM, and 8Kbytes of main Flash (APROM). The MS51 MCUs' Flash supports the In-Application-Programming (IAP) function that enables on-chip firmware updates. These MCUs support a function of configurable Flash from APROM called LDROM, in which the Boot code resides for carrying out In-System-Programming (ISP). To reduce power consumption, the MS51 MCUs offer idle and power-down modes that are software selectable.

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Qty. RoHS ECAD Model Core
Program Memory Size
Data RAM Size
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Maximum Clock Frequency
ADC Resolution
Number of I/Os
Supply Voltage - Min
Supply Voltage - Max
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Nuvoton 8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM
Datasheet
3,796In Stock
1,480Expected 11/2/2026
Cut Tape
¥310.6
¥189.4
¥159.3
Reel
¥159.3
¥120.8
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Mult.: 1
: 74
8051 16 kB 1 kB TSSOP-20 24 MHz 12 bit 18 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C Reel, Cut Tape

Nuvoton 8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM
Datasheet
534In Stock
¥116.3
¥100
¥84.7
¥79.9
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Mult.: 1
8051 8 kB 1 kB MSOP-10 24 MHz 12 bit 8 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C Tube

Nuvoton 8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM
Datasheet
744In Stock
¥142.8
¥122.4
¥104.1
¥98.3
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Mult.: 1
8051 32 kB 2 kB TSSOP-20 24 MHz 12 bit 18 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C Tube

Nuvoton 8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM
Datasheet
83In Stock
1,500Expected 7/19/2027
¥209.3
¥179.4
¥156.1
¥147.5
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Min.: 1
Mult.: 1
8051 32 kB 2 kB LQFP-32 24 MHz 12 bit 30 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C Tray
Nuvoton 8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM
Datasheet
975In Stock
¥164.4
¥140.7
¥123.6
¥116.8
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Mult.: 1
8051 32 kB 2 kB QFN-33 24 MHz 12 bit 30 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C Tray
Nuvoton 8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM 0.4mm Pitch width
Datasheet
627In Stock
¥108
¥92.5
¥81.6
¥77.1
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Mult.: 1
8051 16 kB 1 kB QFN-20 24 MHz 12 bit 18 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C Tray

Nuvoton 8-bit Microcontrollers - MCU 8K Bytes Shared with LDROM
Datasheet
Non-Stocked Lead-Time 40 Weeks
¥289
¥176.1
¥147.7
¥111.8
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Mult.: 1
8051 8 kB 1 kB TSSOP-14 24 MHz 12 bit 12 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C Tube
Nuvoton 8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM
Datasheet
Non-Stocked Lead-Time 40 Weeks
¥174.4
¥149.2
¥130.9
¥119.6
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Mult.: 1
8051 32 kB 2 kB TSSOP-28 24 MHz 12 bit 26 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C Tube

Nuvoton 8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM
Datasheet
Non-Stocked Lead-Time 40 Weeks
Reel
¥75.7
Min.: 2,500
Mult.: 2,500
: 2,500
8051 16 kB 1 kB TSSOP-20 24 MHz 12 bit 18 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C Reel
Nuvoton 8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM 0.5mm Pitch width
Datasheet
Non-Stocked Lead-Time 40 Weeks
¥265.8
¥161.6
¥135.9
¥103
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Min.: 1
Mult.: 1
8051 16 kB 1 kB QFN-20 24 MHz 12 bit 18 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C Tray