| Model Number |
| SIM3U144-B-GM |
EFM8BB31F32A-B-5QFN32R |
| Model Name |
| SKYWORKS/SILICON LABS SIM3U144-B-GM |
SKYWORKS/SILICON LABS EFM8BB31F32A-B-5QFN32R |
| Category |
| Microcontroller Units (MCUs/MPUs/SOCs) |
Microcontroller Units (MCUs/MPUs/SOCs) |
| Brand |
| SKYWORKS/SILICON LABS |
SKYWORKS/SILICON LABS |
| Description |
| 64KB 1.8V~3.6V ARM-M3 80MHz 28 QFN-40(6x6) Microcontroller Units (MCUs/MPUs/SOCs) ROHS |
2.2V~3.6V 51Series 5MHz 29 QFN-32(5x5) 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-40(6x6) |
QFN-32(5x5) |
| Package / Arrange |
| Tray |
Tape & Reel (TR) |
| Battery |
| No |
No |
| ECCN |
| 5A992C |
3A991A2 |
| Infrared Data Association |
| Yes |
N/A |
| Low-Voltage Detect |
| Yes |
N/A |
| Program Storage Size |
| 64KB |
N/A |
| Operating Temperature Range |
| -40℃~+85℃ |
-40℃~+125℃ |
| Operating Voltage Range |
| 1.8V~3.6V |
2.2V~3.6V |
| CPU Core |
| ARM-M3 |
51Series |
| Watchdog |
| Yes |
N/A |
| Direct Memory Access |
| Yes |
Yes |
| Universal Serial Bus |
| Yes |
- |
| Internal Oscillator |
| Yes |
N/A |
| CPU Maximum Speed |
| 80MHz |
5MHz |
| DAC (Bit) |
| 10bit |
12bit |
| ADC (Bit) |
| 12bit |
12bit |
| GPIO Ports Number |
| 28 |
29 |
