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Silicon Labs EFM8 Series

72 variants · Silicon Labs

About the Silicon Labs Silicon Labs EFM8 Series series

The Silicon Labs Silicon Labs EFM8 Series series groups 72 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. The listed variants share a common core processor of CIP-51 8051, core size of 8-Bit and mounting type of Surface Mount. Variants differ by case, connectivity and data converters, so you can match the exact case your application requires using the selection guide below.

Select a variant by

Case
20-UFQFN Exposed Pad · 20-WFQFN Exposed Pad · 32-TQFP · 32-VFQFN Exposed Pad
Connectivity
I²C, SMBus, SPI, UART/USART · I²C, SMBus, SPI, UART/USART, USB
Data converters
A/D 9x12b · A/D 11x12b · A/D 15x12b · A/D 20x10b · A/D 20x14b; D/A 4x12b
Number of i (O)
13 · 16 · 25 · 28
Operating temperature
-40°C ~ 85°C (TA) · -40°C ~ 105°C (TA)
Package
Tape & Reel (TR); Cut Tape (CT) · Tray
Program memory size
2KB (2K x 8) · 8KB (8K x 8) · 32KB (32K x 8) · 64KB (64K x 8)
RAM size
2.25K x 8 · 4.25K x 8 · 256 x 8 · 512 x 8

Variant comparison

ParameterEFM8BB10F8G-A-QFN20REFM8LB12F64E-C-QFP32EFM8SB10F2G-A-QFN20REFM8UB10F8G-C-QFN20REFM8UB20F32G-B-QFN32R
Case20-UFQFN Exposed Pad32-TQFP20-UFQFN Exposed Pad20-WFQFN Exposed Pad32-VFQFN Exposed Pad
ConnectivityI²C, SMBus, SPI, UART/USARTI²C, SMBus, SPI, UART/USARTI²C, SMBus, SPI, UART/USARTI²C, SMBus, SPI, UART/USART, USBI²C, SMBus, SPI, UART/USART, USB
Data convertersA/D 15x12bA/D 20x14b; D/A 4x12bA/D 9x12bA/D 11x12bA/D 20x10b
Number of i (O)1628161325
Operating temperature-40°C ~ 85°C (TA)-40°C ~ 105°C (TA)-40°C ~ 85°C (TA)-40°C ~ 85°C (TA)-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)TrayTape & Reel (TR); Cut Tape (CT)Tape & Reel (TR); Cut Tape (CT)Tape & Reel (TR); Cut Tape (CT)
Program memory size8KB (8K x 8)64KB (64K x 8)2KB (2K x 8)8KB (8K x 8)32KB (32K x 8)
RAM size512 x 84.25K x 8256 x 82.25K x 82.25K x 8

Shared specifications

Core processor
CIP-51 8051
Core size
8-Bit
Mounting type
Surface Mount
Oscillator type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Program memory type
FLASH

Request a quote on any Silicon Labs EFM8 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.

Frequently asked questions

How do the Silicon Labs Silicon Labs EFM8 Series variants differ?
Silicon Labs EFM8 Series part numbers differ by case, connectivity, data converters and number of i (O). Use the selection guide above to pick by case.
How many Silicon Labs Silicon Labs EFM8 Series part numbers are listed?
72 Silicon Labs Silicon Labs EFM8 Series part numbers are listed, each with specifications and a datasheet where available.
How do I get pricing and lead time for Silicon Labs Silicon Labs EFM8 Series?
Request a quote (RFQ) for any Silicon Labs EFM8 Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.

All variants