Microcontrollers
Browse available Microcontrollers part numbers with manufacturer references, stock information, pricing, datasheets and key specifications. Use the table below to compare options for your project.
For BOM, shortage or hard-to-find requirements, send your part number and quantity to Winsun (HK) Electronics for availability, lead-time and quotation support.
| Photo | Mfr. Part # | Availability | Price | Quantity | Datasheet | Package/Case | Series | Packaging | Product Status | Programmable | Core Processor | Core Size | Speed | Connectivity | Peripherals | Number of I/O | Program Memory Size | Program Memory Type | EEPROM Size | RAM Size | Voltage - Supply (Vcc/Vdd) | Data Converters | Oscillator Type | Operating Temperature | Grade | Qualification | Mounting Type | Supplier Device Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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EFM8SB20F32G-A-QFN32IC MCU 8BIT 32KB FLASH 32QFN |
1,806 | - |
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Datasheet | 32-VFQFN Exposed Pad | Sleepy Bee | Tube | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 25MHz | EBI/EMI, I2C, SMBus, SPI, UART/USART | Brown-out Detect/Reset, POR, PWM, WDT | 24 | 32KB (32K x 8) | FLASH | - | 4.25K x 8 | 1.8V ~ 3.6V | A/D 23x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8SB20F32G-A-QFP32IC MCU 8BIT 32KB FLASH 32QFP |
2,966 | - |
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Datasheet | 32-LQFP | Sleepy Bee | Tray | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 25MHz | EBI/EMI, I2C, SMBus, SPI, UART/USART | Brown-out Detect/Reset, POR, PWM, WDT | 24 | 32KB (32K x 8) | FLASH | - | 4.25K x 8 | 1.8V ~ 3.6V | A/D 23x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8SB20F64G-A-QFN24IC MCU 8BIT 64KB FLASH 24QFN |
4,412 | - |
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Datasheet | 24-WFQFN Exposed Pad | Sleepy Bee | Tube | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 25MHz | EBI/EMI, I2C, SMBus, SPI, UART/USART | Brown-out Detect/Reset, POR, PWM, WDT | 16 | 64KB (64K x 8) | FLASH | - | 4.25K x 8 | 1.8V ~ 3.6V | A/D 15x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8SB20F64G-A-QFN32IC MCU 8BIT 64KB FLASH 32QFN |
4,165 | - |
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Datasheet | 32-VFQFN Exposed Pad | Sleepy Bee | Tube | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 25MHz | EBI/EMI, I2C, SMBus, SPI, UART/USART | Brown-out Detect/Reset, POR, PWM, WDT | 24 | 64KB (64K x 8) | FLASH | - | 4.25K x 8 | 1.8V ~ 3.6V | A/D 23x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8SB20F64G-A-QFP32IC MCU 8BIT 64KB FLASH 32QFP |
2,590 | - |
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Datasheet | 32-LQFP | Sleepy Bee | Tray | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 25MHz | EBI/EMI, I2C, SMBus, SPI, UART/USART | Brown-out Detect/Reset, POR, PWM, WDT | 24 | 64KB (64K x 8) | FLASH | - | 4.25K x 8 | 1.8V ~ 3.6V | A/D 23x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8UB10F16G-B-QFN20IC MCU 8BIT 16KB FLASH 20QFN |
3,456 | - |
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Datasheet | 20-UFQFN Exposed Pad | Universal Bee | Tube | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 50MHz | I2C, SMBus, SPI, UART/USART, USB | Brown-out Detect/Reset, POR, PWM, WDT | 13 | 16KB (16K x 8) | FLASH | - | 2.25K x 8 | 2.2V ~ 5.25V | A/D 11x12b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8UB10F16G-B-QFN28IC MCU 8BIT 16KB FLASH 28QFN |
4,510 | - |
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Datasheet | 28-WFQFN Exposed Pad | Universal Bee | Tube | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 50MHz | I2C, SMBus, SPI, UART/USART, USB | Brown-out Detect/Reset, POR, PWM, WDT | 22 | 16KB (16K x 8) | FLASH | - | 2.25K x 8 | 2.2V ~ 5.25V | A/D 20x12b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8UB10F8G-B-QFN20IC MCU 8BIT 8KB FLASH 20QFN |
3,181 | - |
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Datasheet | 20-UFQFN Exposed Pad | Universal Bee | Tube | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 50MHz | I2C, SMBus, SPI, UART/USART, USB | Brown-out Detect/Reset, POR, PWM, WDT | 13 | 8KB (8K x 8) | FLASH | - | 2.25K x 8 | 2.2V ~ 5.25V | A/D 11x12b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8UB11F16G-B-QSOP24IC MCU 8BIT 16KB FLASH 24QSOP |
1,378 | - |
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Datasheet | 24-SSOP (0.154", 3.90mm Width) | Universal Bee | Tube | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 50MHz | I2C, SMBus, SPI, UART/USART, USB | Brown-out Detect/Reset, POR, PWM, WDT | 17 | 16KB (16K x 8) | FLASH | - | 2.25K x 8 | 2.2V ~ 5.25V | A/D 15x12b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8UB20F32G-A-QFN32IC MCU 8BIT 32KB FLASH 32QFN |
4,348 | - |
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Datasheet | 32-VFQFN Exposed Pad | Universal Bee | Tube | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 48MHz | I2C, SMBus, SPI, UART/USART, USB | Brown-out Detect/Reset, POR, PWM, WDT | 25 | 32KB (32K x 8) | FLASH | - | 2.25K x 8 | 2.65V ~ 3.6V | A/D 20x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8UB20F32G-A-QFP32IC MCU 8BIT 32KB FLASH 32QFP |
4,603 | - |
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Datasheet | 32-LQFP | Universal Bee | Tray | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 48MHz | I2C, SMBus, SPI, UART/USART, USB | Brown-out Detect/Reset, POR, PWM, WDT | 25 | 32KB (32K x 8) | FLASH | - | 2.25K x 8 | 2.65V ~ 3.6V | A/D 20x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8UB20F32G-A-QFP48IC MCU 8BIT 32KB FLASH 48TQFP |
4,975 | - |
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Datasheet | 48-TQFP | Universal Bee | Tray | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 48MHz | EBI/EMI, I2C, SMBus, SPI, UART/USART, USB | Brown-out Detect/Reset, POR, PWM, WDT | 40 | 32KB (32K x 8) | FLASH | - | 2.25K x 8 | 2.65V ~ 3.6V | A/D 32x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8UB20F64G-A-QFN32IC MCU 8BIT 64KB FLASH 32QFN |
2,065 | - |
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Datasheet | 32-VFQFN Exposed Pad | Universal Bee | Tube | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 48MHz | I2C, SMBus, SPI, UART/USART, USB | Brown-out Detect/Reset, POR, PWM, WDT | 25 | 64KB (64K x 8) | FLASH | - | 4.25K x 8 | 2.65V ~ 3.6V | A/D 20x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8UB20F64G-A-QFP32IC MCU 8BIT 64KB FLASH 32QFP |
2,402 | - |
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Datasheet | 32-LQFP | Universal Bee | Tray | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 48MHz | I2C, SMBus, SPI, UART/USART, USB | Brown-out Detect/Reset, POR, PWM, WDT | 25 | 64KB (64K x 8) | FLASH | - | 4.25K x 8 | 2.65V ~ 3.6V | A/D 20x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8UB20F64G-A-QFP48IC MCU 8BIT 64KB FLASH 48TQFP |
4,816 | - |
|
Datasheet | 48-TQFP | Universal Bee | Tray | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 48MHz | EBI/EMI, I2C, SMBus, SPI, UART/USART, USB | Brown-out Detect/Reset, POR, PWM, WDT | 40 | 64KB (64K x 8) | FLASH | - | 4.25K x 8 | 2.65V ~ 3.6V | A/D 32x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8SB20F16G-A-QFN24RIC MCU 8BIT 16KB FLASH 24QFN |
3,874 | - |
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Datasheet | 24-WFQFN Exposed Pad | Sleepy Bee | Tape & Reel (TR) | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 25MHz | EBI/EMI, I2C, SMBus, SPI, UART/USART | Brown-out Detect/Reset, POR, PWM, WDT | 16 | 16KB (16K x 8) | FLASH | - | 4.25K x 8 | 1.8V ~ 3.6V | A/D 15x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8SB20F32G-A-QFN24RIC MCU 8BIT 32KB FLASH 24QFN |
3,924 | - |
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Datasheet | 24-WFQFN Exposed Pad | Sleepy Bee | Tape & Reel (TR) | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 25MHz | EBI/EMI, I2C, SMBus, SPI, UART/USART | Brown-out Detect/Reset, POR, PWM, WDT | 16 | 32KB (32K x 8) | FLASH | - | 4.25K x 8 | 1.8V ~ 3.6V | A/D 15x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8SB20F32G-A-QFN32RIC MCU 8BIT 32KB FLASH 32QFN |
2,997 | - |
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Datasheet | 32-VFQFN Exposed Pad | Sleepy Bee | Tape & Reel (TR) | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 25MHz | EBI/EMI, I2C, SMBus, SPI, UART/USART | Brown-out Detect/Reset, POR, PWM, WDT | 24 | 32KB (32K x 8) | FLASH | - | 4.25K x 8 | 1.8V ~ 3.6V | A/D 23x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8SB20F32G-A-QFP32RIC MCU 8BIT 32KB FLASH 32QFP |
2,215 | - |
|
Datasheet | 32-LQFP | Sleepy Bee | Tape & Reel (TR) | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 25MHz | EBI/EMI, I2C, SMBus, SPI, UART/USART | Brown-out Detect/Reset, POR, PWM, WDT | 24 | 32KB (32K x 8) | FLASH | - | 4.25K x 8 | 1.8V ~ 3.6V | A/D 23x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount | |
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EFM8SB20F64G-A-QFN24RIC MCU 8BIT 64KB FLASH 24QFN |
1,082 | - |
|
Datasheet | 24-WFQFN Exposed Pad | Sleepy Bee | Tape & Reel (TR) | Discontinued at Digi-Key | Not Verified | CIP-51 8051 | 8-Bit | 25MHz | EBI/EMI, I2C, SMBus, SPI, UART/USART | Brown-out Detect/Reset, POR, PWM, WDT | 16 | 64KB (64K x 8) | FLASH | - | 4.25K x 8 | 1.8V ~ 3.6V | A/D 15x10b | Internal | -40°C ~ 85°C (TA) | - | - | Surface Mount |
Microcontrollers FAQ
Common questions about selecting, comparing and sourcing Microcontrollers components through Winsun (HK) Electronics.
What should I check when selecting Microcontrollers components?
Compare the manufacturer part number, electrical specifications, package, operating conditions and application requirements. The product datasheet should be used to confirm technical suitability.
Can Winsun help source specific Microcontrollers part numbers?
Yes. Send the exact part number, manufacturer and required quantity. Winsun (HK) Electronics can assist with availability checks, quotation support and sourcing options based on your requirement.
Do you support shortage, obsolete or hard-to-find Microcontrollers parts?
Yes. Our sourcing team can review shortage and obsolete-part requirements and help check available supply channels or possible alternatives when appropriate.
How do I request a quote for Microcontrollers components?
Submit an RFQ with the part number, manufacturer, quantity and target delivery requirement. Our sales team will review your request and follow up with current sourcing information.
