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EFM32GG332F1024-QFP64 Datasheet(PDF) 7 Page - Silicon Laboratories |
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EFM32GG332F1024-QFP64 Datasheet(HTML) 7 Page - Silicon Laboratories |
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7 / 71 page  ...the world's most energy friendly microcontrollers 2014-05-23 - EFM32GG332FXX - d0126_Rev1.30 7 www.silabs.com power domain enables the EFM32GG332 to keep track of time and retain data, even if the main power source should drain out. 2.1.27 Advanced Encryption Standard Accelerator (AES) The AES accelerator performs AES encryption and decryption with 128-bit or 256-bit keys. Encrypting or decrypting one 128-bit data block takes 52 HFCORECLK cycles with 128-bit keys and 75 HFCORECLK cycles with 256-bit keys. The AES module is an AHB slave which enables efficient access to the data and key registers. All write accesses to the AES module must be 32-bit operations, i.e. 8- or 16-bit operations are not supported. 2.1.28 General Purpose Input/Output (GPIO) In the EFM32GG332, there are 50 General Purpose Input/Output (GPIO) pins, which are divided into ports with up to 16 pins each. These pins can individually be configured as either an output or input. More advanced configurations like open-drain, filtering and drive strength can also be configured individually for the pins. The GPIO pins can also be overridden by peripheral pin connections, like Timer PWM outputs or USART communication, which can be routed to several locations on the device. The GPIO supports up to 16 asynchronous external pin interrupts, which enables interrupts from any pin on the device. Also, the input value of a pin can be routed through the Peripheral Reflex System to other peripherals. 2.2 Configuration Summary The features of the EFM32GG332 is a subset of the feature set described in the EFM32GG Reference Manual. Table 2.1 (p. 7) describes device specific implementation of the features. Table 2.1. Configuration Summary Module Configuration Pin Connections Cortex-M3 Full configuration NA DBG Full configuration DBG_SWCLK, DBG_SWDIO, DBG_SWO MSC Full configuration NA DMA Full configuration NA RMU Full configuration NA EMU Full configuration NA CMU Full configuration CMU_OUT0, CMU_OUT1 WDOG Full configuration NA PRS Full configuration NA USB Full configuration USB_VBUS, USB_VBUSEN, USB_VREGI, USB_VREGO, USB_DM, USB_DMPU, USB_DP, USB_ID I2C0 Full configuration I2C0_SDA, I2C0_SCL I2C1 Full configuration I2C1_SDA, I2C1_SCL USART0 Full configuration with IrDA US0_TX, US0_RX. US0_CLK, US0_CS USART1 Full configuration with I2S US1_TX, US1_RX, US1_CLK, US1_CS USART2 Full configuration with I2S US2_TX, US2_RX, US2_CLK, US2_CS LEUART0 Full configuration LEU0_TX, LEU0_RX |
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