| Model Number |
| EFM8BB31F64I-D-QFN32 |
C8051F521-C-IMR |
| Model Name |
| SKYWORKS/SILICON LABS EFM8BB31F64I-D-QFN32 |
SKYWORKS/SILICON LABS C8051F521-C-IMR |
| 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 |
8KB 256Byte FLASH 6 2V~5.25V 51Series 25MHz DFN-10-EP(3x3) 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 |
0.001 grams / 0.000035 oz |
| Package / Case |
| QFN-32(4x4) |
DFN-10-EP(3x3) |
| Package / Arrange |
| Tube-packed |
Tape & Reel (TR) |
| Battery |
| No |
No |
| ECCN |
| 3A991A2 |
EAR99 |
| Low-Voltage Detect |
| Yes |
Yes |
| Program Storage Size |
| 64KB |
8KB |
| Operating Voltage Range |
| 2.2V~3.6V |
2V~5.25V |
| Operating Temperature Range |
| -40℃~+125℃ |
-40℃~+125℃ |
| CPU Core |
| 51Series |
51Series |
| Watchdog |
| Yes |
Yes |
| Internal Oscillator |
| Yes |
Yes |
| CPU Maximum Speed |
| 50MHz |
25MHz |
| DAC (Bit) |
| 12bit |
- |
| ADC (Bit) |
| 12bit |
12bit |
| GPIO Ports Number |
| 29 |
6 |
