Silicon Labs EFM8BB31F16I-D-4QFN24
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.93 | $0.93 |
| 15+ | $0.90 | $13.50 |
| 25+ | $0.88 | $22.00 |
| 50+ | $0.83 | $41.50 |
| 100+ | $0.74 | $74.00 |
| N+ | $0.15 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Silicon Labs |
| Product Series | Busy Bee |
| Packaging | Tube | NULL |
| Core Processor | CIP-51 8051 |
| Core Size | 8-Bit |
| Speed | 50MHz |
| Connectivity | I2C, SMBus, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 20 |
| Program Memory Size | 16KB (16K x 8) |
| Program Memory Type | FLASH |
| EEPROM Size | - |
| RAM Size | 2.25K x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.2V ~ 3.6V |
| Data Converters | A/D 12x12b; D/A 2x12b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 24-QFN (4x4) |
| Package / Case | 24-WFQFN Exposed Pad |
| ROHS |  |
The Silicon Labs EFM8BB31F16I-D-4QFN24 is a high-speed 8-bit MCU based on the CIP-51 8051 core. It runs at 50MHz with 16KB flash and 2.25KB RAM, operating from 2.2V to 3.6V. This device includes PWM, WDT, brown-out reset, and POR in a 24-WFQFN package, designed for harsh environments up to 125°C.
- High-speed 8051 core: 50MHz execution accelerates control loops compared to standard 8-bit MCUs.
- Extended temperature range: -40°C to 125°C suits automotive and industrial applications.
- Rich timer set: PWM and WDT reduce external logic and improve system reliability.
- Compact 24-QFN: Small footprint with exposed pad for thermal dissipation.
Automotive Body Electronics
The 125°C rating and 50MHz CIP-51 core handle LIN bus nodes for window lifts or mirror control.
Industrial Motor Drivers
High-speed PWM generation at 50MHz enables smooth stepper motor microstepping with minimal jitter.
LED Lighting Controllers
The 2.25KB RAM supports complex dimming curves, while the 8051 core manages multiple PWM channels.
Power Supply Monitoring
With 2.2V minimum supply, it can monitor auxiliary rails in server PSUs and trigger fault responses.
HVAC Zone Controllers
The wide temperature range and WDT ensure reliable operation in rooftop units exposed to extreme heat.
Portable Test Equipment
Its 16KB flash is enough for calibration routines, and the 24-QFN package fits handheld probes.
- Q: What core does the EFM8BB31F16I use?
- A: It uses the CIP-51 8051 core running at up to 50MHz.
- Q: What is the supply voltage range?
- A: It operates from 2.2V to 3.6V, suitable for 3.3V systems.
- Q: How much flash and RAM are available?
- A: It has 16KB flash and 2.25KB RAM for data storage.
- Q: What is the operating temperature range?
- A: It is rated for -40°C to 125°C, ideal for automotive and industrial use.
- Q: Does it include PWM and watchdog?
- A: Yes, it features PWM, WDT, brown-out reset, and POR.
EFM8BB31F16I-D-4QFN24.pdf
- Q: What core does the EFM8BB31F16I use?
- A: It uses the CIP-51 8051 core running at up to 50MHz.
- Q: What is the supply voltage range?
- A: It operates from 2.2V to 3.6V, suitable for 3.3V systems.
- Q: How much flash and RAM are available?
- A: It has 16KB flash and 2.25KB RAM for data storage.
- Q: What is the operating temperature range?
- A: It is rated for -40°C to 125°C, ideal for automotive and industrial use.
- Q: Does it include PWM and watchdog?
- A: Yes, it features PWM, WDT, brown-out reset, and POR.
