EFM8UB20F32G-A-QFP48R
EFM8UB20F32G-A-QFP48R
Discontinued
Description:  IC MCU 8BIT 32KB FLASH 48TQFP
Manufacturer:  Silicon Labs
History Price: Discontinued at Digi-Key
In Stock: 300
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EFM8UB20F32G-A-QFP48R Specification
Specification
Mfr Part
EFM8UB20F32G-A-QFP48R
Category
Embedded - Microcontrollers
Manufacturer
Silicon Labs
Series
Universal Bee
Packaging
Tape & Reel (TR)
Status
Discontinued
Environmental Compliance
Lead Free
Radiation Hardening
No
REACH SVHC
No SVHC
RoHS
Compliant
HS Code
-
Technical Parameter
Core Processor
CIP-51 8051
Core Size
8-Bit
Speed
48MHz
Connectivity
EBI/EMI, I2C, SMBus, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O
40
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
EEPROM Size
-
RAM Size
2.25K x 8
Voltage - Supply (Vcc/Vdd)
2.65V ~ 3.6V
Data Converters
A/D 32x10b
Oscillator Type
Internal
Operating Temperature
-40 ℃ ~ 85 ℃ (TA)
Mounting Type
Surface Mount
Package / Case
-
Supplier Device Package
48-TQFP (7x7)
EFM8UB20F32G-A-QFP48R PDF Datasheet
EFM8UB20F32G-A-QFP48R Datasheet
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EFM8UB20F32G-A-QFP48R Description
Introduction to Silicon Labs EFM8UB20F32G-A-QFP48R

The EFM8UB20F32G-A-QFP48R is a member of the EFM8 family of microcontrollers from Silicon Labs, designed for low-power, high-performance applications. This microcontroller is particularly suitable for embedded systems that require efficient processing capabilities, extensive peripheral options, and robust communication interfaces. With its advanced architecture and features, the EFM8UB20F32G is ideal for applications in consumer electronics, industrial control, and automotive systems.

Key Specifications

- Core Architecture: The EFM8UB20F32G features an 8051-compatible core that operates at a maximum frequency of 48 MHz. This architecture provides a balance between performance and power efficiency.
- Flash Memory: It comes with 32 KB of Flash memory for program storage, allowing developers to implement complex applications without the need for external memory.
- RAM: The device includes 4 KB of SRAM, providing sufficient space for variable storage during program execution.
- Operating Voltage: The microcontroller operates within a voltage range of 2.0V to 3.6V, making it suitable for battery-operated devices.

Peripheral Features

The EFM8UB20F32G is equipped with a rich set of peripherals that enhance its functionality:

- GPIO Ports: The device has up to 32 general-purpose I/O pins that can be configured for various functions such as digital input/output or analog input.
- Timers/Counters: It includes multiple timers (up to four), which can be used for timing operations, event counting, or pulse-width modulation (PWM) generation.
- Analog Comparators: The microcontroller features two analog comparators that allow for real-time signal processing and decision-making based on analog input levels.
- ADC: An integrated 12-bit Analog-to-Digital Converter (ADC) enables precise measurement of analog signals with up to 8 channels.

Communication Interfaces

The EFM8UB20F32G supports various communication protocols that facilitate data exchange with other devices:

- UART: Multiple Universal Asynchronous Receiver/Transmitters (UARTs) are available for serial communication.
- SPI: Serial Peripheral Interface (SPI) support allows high-speed data transfer with peripheral devices such as sensors and memory chips.
- I2C: Inter-Integrated Circuit (I2C) interface enables easy connection to multiple devices on the same bus.

Low Power Consumption

One of the standout features of the EFM8UB20F32G is its low power consumption:

- Sleep Modes: The microcontroller offers various low-power modes, including deep sleep modes that significantly reduce current draw during inactivity. In sleep mode, it can consume as little as a few microamperes.
- Dynamic Power Management: The device incorporates dynamic voltage scaling and clock management features that help optimize power usage based on application requirements.

Package Information

The EFM8UB20F32G-A-QFP48R comes in a QFP package:

- Package Type: It is housed in a Quad Flat Package (QFP) with 48 pins, providing ample I/O options while maintaining a compact footprint.
- Dimensions: The dimensions of the QFP48 package are approximately 7 mm x 7 mm x 1.4 mm, making it suitable for space-constrained designs.

Development Support

Silicon Labs provides extensive development support for the EFM8UB20F32G:

- Development Kits: Various development kits are available that include hardware and software tools to facilitate rapid prototyping and testing.
- Software Development Environment: Support through Simplicity Studio IDE allows developers to write, debug, and optimize their applications efficiently. Additionally, libraries and example projects are provided to accelerate development.

Applications

The versatility of the EFM8UB20F32G makes it suitable for numerous applications:

- Consumer Electronics: Ideal for smart home devices like thermostats, lighting controls, and wearable technology due to its low power consumption and efficient performance.
- Industrial Control Systems: Used in automation systems where reliable processing and communication are crucial.
- Automotive Applications: Suitable for automotive control systems requiring robust performance under varying conditions.

Conclusion

In summary, the Silicon Labs EFM8UB20F32G-A-QFP48R microcontroller represents an excellent choice for developers seeking a powerful yet efficient solution for embedded applications. With its comprehensive set of peripherals, low power consumption features, and robust communication interfaces, it caters well to diverse application needs across different industries. Its compatibility with existing development tools further enhances its appeal by streamlining the design process and reducing time-to-market. Whether used in consumer electronics or industrial automation systems, the EFM8UB20F32G stands out as a versatile component in modern embedded design.
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  • Customer Reviews
    4.95 out of 5.00 stars from 76 customer reviews from all over the world
    Angela Butler
    United States
    5 stars
    2026-04-03 02:18
    Pas encore testé
    Luca Gallo
    Italy
    5 stars
    2026-04-02 19:11
    Great!!! Perfect material. Recommended.
    Zoé Lefèvre
    France
    5 stars
    2026-04-02 17:18
    I have never received this order and the seller does not want to refund
    Valeria Jimena
    Spain
    5 stars
    2026-04-02 06:38
    Original brand new, good quality.
    Zé Maria Almeida
    Brazil
    5 stars
    2026-04-02 05:57
    All right and well packed arrived fast, this congratulated the seller.
    Sofía
    Spain
    5 stars
    2026-04-02 05:18
    Perfect. Arrived fast.