
For Reference Only
Part Number | EFM8BB31F32I-B-QFN32 |
OEMstron Part # | EFM8BB31F32I-B-QFN32 |
Manufacturer | Silicon Labs |
Category | Semiconductors › Embedded Processors & Controllers › Microcontrollers |
Description | IC MCU 8BIT 32KB FLASH 32QFN |
Lifecycle | Not For New Designs |
RoHS | No RoHS Information |
EDA/CAD Models | EFM8BB31F32I-B-QFN32 PCB Footprint and Symbol |
Warehouses | USA, Europe, China, Hong Kong SAR |
Estimated Delivery | Mar 20 - Mar 25 (Choose Expedited Shipping) |
Warranty | Up to 1 year [Limited-Warranty]* |
Payment | ![]() |
Shipping | ![]() |
EFM8BB31F32I-B-QFN32 Specifications
Part Number | EFM8BB31F32I-B-QFN32 | |
Brand | Silicon Labs | |
Lifecycle | Not For New Designs | |
RoHS | No RoHS Information | |
Product Line | Semiconductors | |
Category | Embedded Processors & Controllers | |
Subcategory | Microcontrollers | |
Manufacturer | Silicon Labs | |
Series | Busy Bee | |
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 | 29 | |
Program Memory Size | 32KB (32K 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 20x10/12b SAR; D/A 2x12b | |
Oscillator Type | Internal | |
Operating Temperature | -40°C ~ 125°C (TA) | |
Mounting Type | Surface Mount | |
Package / Case | 32-UFQFN Exposed Pad | |
Supplier Device Package | 32-QFN (4x4) |
EFM8BB31F32I-B-QFN32 Documents















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Global Supply Chains - Reliable and Authorized Distributor Resources
Part Number | Description | Stock |
EFM8BB31F32I-B-QFN32R D# EFM8BB31F32I-B-QFN32R-ND Silicon Laboratories Inc |
IC MCU 8BIT 32KB FLASH 32QFN |
Limited Supply - Call |
EFM8BB31F32I-B-QFN32 D# 336-3644-5-ND Silicon Laboratories Inc |
IC MCU 8BIT 32KB FLASH 32QFN |
On Order |
Part Number | Description | Stock |
EFM8BB31F32IBQFN32 Silicon Laboratories Inc |
OEM/CM QUOTES ONLY | NO BROKERS |
920 |
Part Number | Description | Stock |
EFM8BB31F32IBQFN32 Silicon Laboratories Inc |
OEM/CM ONLY |
115 |
Part Number | Description | Stock |
EFM8BB31F32I-B-QFN32R Silicon Laboratories Inc |
32kB flash, 2.25 kB RAM, 12b ADC, 2x DACs |
Short Lead Time |
EFM8BB31F32I-B-QFN32 Silicon Laboratories Inc |
32kB flash, 2.25 kB RAM, 12b ADC, 2x DACs |
Short Lead Time |
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