| Model Number |
| EFM8BB31F64G-B-QFN32R |
EFM32LG840F256G-F-QFN64 |
| Model Name |
| SKYWORKS/SILICON LABS EFM8BB31F64G-B-QFN32R |
SKYWORKS/SILICON LABS EFM32LG840F256G-F-QFN64 |
| Category |
| Microcontroller Units (MCUs/MPUs/SOCs) |
Microcontroller Units (MCUs/MPUs/SOCs) |
| Brand |
| SKYWORKS/SILICON LABS |
SKYWORKS/SILICON LABS |
| Description |
| 64KB 2.2V~3.6V 51Series 50MHz 29 QFN-32(4x4) Microcontroller Units (MCUs/MPUs/SOCs) ROHS |
1.85V~3.8V ARM-M3 48MHz 56 QFN-64(9x9) Microcontroller Units (MCUs/MPUs/SOCs) ROHS |
| RoHS |
| Lead free / RoHS Compliant |
Lead free / RoHS Compliant |
| Unit |
| Piece |
Piece |
| Weight: |
| 1.000 grams / 0.035274 oz |
1.000 grams / 0.035274 oz |
| Package / Case |
| QFN-32(4x4) |
QFN-64(9x9) |
| Package / Arrange |
| Tape & Reel (TR) |
Tray |
| Battery |
| No |
No |
| ECCN |
| 5A992C |
5A992C |
| Low-Voltage Detect |
| Yes |
N/A |
| Program Storage Size |
| 64KB |
N/A |
| Operating Voltage Range |
| 2.2V~3.6V |
1.85V~3.8V |
| Operating Temperature Range |
| -40℃~+85℃ |
-40℃~+85℃ |
| CPU Core |
| 51Series |
ARM-M3 |
| Watchdog |
| Yes |
N/A |
| Secure Digital Input and Output |
| - |
Yes |
| Universal Serial Bus |
| - |
- |
| Internal Oscillator |
| Yes |
N/A |
| CPU Maximum Speed |
| 50MHz |
48MHz |
| DAC (Bit) |
| 12bit |
12bit |
| ADC (Bit) |
| 12bit |
12bit |
| GPIO Ports Number |
| 29 |
56 |
