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| Part Number | EFM32LG940F128-QFN64 | EFM32LG940F128-QFN64T | EFM32LG840F128-QFN64 |
|---|---|---|---|
| Manufacturer | Silicon Labs | Silicon Labs | Silicon Labs |
| Product Status | Obsolete | Obsolete | Obsolete |
| Core Processor | ARM® Cortex®-M3 | ARM® Cortex®-M3 | ARM® Cortex®-M3 |
| Core Size | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core |
| Speed | 48MHz | 48MHz | 48MHz |
| Connectivity | I²C, IrDA, SmartCard, SPI, UART/USART, USB | I²C, IrDA, SmartCard, SPI, UART/USART, USB | I²C, IrDA, SmartCard, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT | Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT | Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT |
| Number of I/O | 53 | 53 | 56 |
| Program Memory Size | 128KB (128K x 8) | 128KB (128K x 8) | 128KB (128K x 8) |
| Program Memory Type | Flash | Flash | Flash |
| EEPROM Size | - | - | - |
| RAM Size | 32K x 8 | 32K x 8 | 32K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.98V ~ 3.8V | 1.98V ~ 3.8V | 1.98V ~ 3.8V |
| Data Converters | A/D 8x12b; D/A 2x12b | A/D 8x12b; D/A 2x12b | A/D 8x12b; D/A 2x12b |
| Oscillator Type | Internal | Internal | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 64-WFQFN Exposed Pad | 64-WFQFN Exposed Pad | 64-WFQFN Exposed Pad |
| Supplier Device Package | - | - | - |
