| Model Number |
| EFM8UB20F64G-B-QFP32R |
SIM3U146-B-GMR |
| Model Name |
| SKYWORKS/SILICON LABS EFM8UB20F64G-B-QFP32R |
SKYWORKS/SILICON LABS SIM3U146-B-GMR |
| Category |
| Microcontroller Units (MCUs/MPUs/SOCs) |
Microcontroller Units (MCUs/MPUs/SOCs) |
| Brand |
| SKYWORKS/SILICON LABS |
SKYWORKS/SILICON LABS |
| Description |
| 64KB 4.25KB FLASH 25 2.65V~3.6V 51Series 48MHz TQFP-32(7x7) Microcontroller Units (MCUs/MPUs/SOCs) ROHS |
1.8V~3.6V ARM-M3 80MHz 50 QFN-64(9x9) Microcontroller Units (MCUs/MPUs/SOCs) ROHS |
| RoHS |
| Lead free / RoHS Compliant |
Lead free / RoHS Compliant |
| Unit |
| Piece |
Piece |
| Weight: |
| 0.001 grams / 0.000035 oz |
1.000 grams / 0.035274 oz |
| Package / Case |
| TQFP-32(7x7) |
QFN-64(9x9) |
| Package / Arrange |
| Tape & Reel (TR) |
Tape & Reel (TR) |
| Battery |
| No |
No |
| ECCN |
| 3A991A2 |
5A992C |
| Infrared Data Association |
| - |
N/A |
| Low-Voltage Detect |
| Yes |
N/A |
| CCP Capture/Compare |
| - |
N/A |
| Program Storage Size |
| 64KB |
N/A |
| Internal Comparator |
| - |
N/A |
| communication protocol |
| - |
N/A |
| Watchdog |
| Yes |
N/A |
| Real-Time Clock |
| - |
N/A |
| Universal Serial Bus |
| Yes |
Yes |
| RAM Size |
| 4.25KB |
N/A |
| 16Bit Timer |
| - |
N/A |
| 8Bit Timer |
| - |
N/A |
| PWM (Bit) |
| - |
N/A |
| Internal Oscillator |
| Yes |
N/A |
| DAC (Bit) |
| - |
10bit |
| Program Memory Type |
| FLASH |
N/A |
| ADC (Bit) |
| 10bit |
12bit |
| GPIO Ports Number |
| 25 |
50 |
| Operating Voltage Range |
| 2.65V~3.6V |
1.8V~3.6V |
| Operating Temperature Range |
| -40℃~+85℃ |
-40℃~+85℃ |
| CPU Core |
| 51Series |
ARM-M3 |
| Peripheral/Function |
| WDT |
N/A |
| Secure Digital Input and Output |
| - |
Yes |
| Direct Memory Access |
| - |
Yes |
| I2C |
| - |
N/A |
| UART/USART |
| - |
N/A |
| 32Bit Timer |
| - |
N/A |
| CPU Maximum Speed |
| 48MHz |
80MHz |
| CAN |
| - |
N/A |
| SPI |
| - |
N/A |
| I2S |
| - |
N/A |
