Energy Micro EFM32 microcontrollers: Family offers 64, 128, or 256 kbytes of flash memory

The Leopard Gecko EFM32 microcontroller family offers 64, 128, or 256 kbytes of flash memory, and high-end Giant Gecko devices offer 512 or 1024 kbytes of flash memory with 128 kbytes of RAM. The CPUs operate at speeds as high as 48 MHz, and a 400-nA backup-power mode enables the real-time clock to keep running and provide 512 backup register bytes, protecting against clock reset and data loss during a momentary power loss. The devices integrate three on-chip op amps and an 8×36-segment LCD controller. They provide the option of a 320×240-dot, direct-drive TFT controller that can drive display updates without CPU intervention. EFM32 Gecko microcontrollers can achieve an active-mode current consumption of 160 μA/MHz and provide a deep-sleep mode, with the real-time clock running, that consumes 400 nA; a shutoff mode, with general-purpose-I/O wake-up, consuming 20 nA; and wake-up from sleep modes as short as 2 μsec. The EFM32 Leopard Gecko and Giant Gecko sell for $2.47 and $3.53 (100,000), respectively.

Energy Micro AS, www.energymicro.com