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| Part Number | EFM8UB31F40G-A-QFN24 | EFM8UB31F40G-A-QFN24R |
|---|---|---|
| Manufacturer | Silicon Labs | Silicon Labs |
| Product Status | Obsolete | Obsolete |
| Core Processor | CIP-51 8051 | CIP-51 8051 |
| Core Size | 8-Bit | 8-Bit |
| Speed | 48MHz | 48MHz |
| Connectivity | I²C, SMBus, SPI, UART/USART, USB | I²C, SMBus, SPI, UART/USART, USB |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 17 | 17 |
| Program Memory Size | 40KB (40K x 8) | 40KB (40K x 8) |
| Program Memory Type | Flash | Flash |
| EEPROM Size | - | - |
| RAM Size | 3.25K x 8 | 3.25K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.71V ~ 5.5V | 1.71V ~ 5.5V |
| Data Converters | A/D 16x12b | A/D 16x12b |
| Oscillator Type | Internal | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 24-WFQFN Exposed Pad | 24-WFQFN Exposed Pad |
| Supplier Device Package | 24-QFN (4x4) | 24-QFN (4x4) |