New MCUs Combine Hardware Cryptography with Advanced Energy Management

Silicon Labs recently introduced two new EFM32 Gecko microcontroller (MCU) families that feature advanced security and energy-management technologies. The Jade Gecko and Pearl Gecko MCUs combine a hardware cryptography engine, flexible low-energy modes, an on-chip DC-DC converter, and scalable memory options backed by Silicon Labs’s Simplicity Studio tools. The MCUs target an array of energy-sensitive and battery-powered devices, such as wearables and IoT node applications.Silicon Labs jade pearl

Jade and Pearl Gecko MCUs are meant to equip IoT-connected devices with the latest security technologies to thwart hackers. They feature a hardware cryptography engine providing fast, energy-efficient, autonomous encryption and decryption for Internet security protocols (e.g., TLS/SSL) with minimal CPU intervention. The on-chip crypto-accelerator supports advanced algorithms such as AES with 128- or 256-bit keys, elliptical curve cryptography (ECC), SHA-1, and SHA-224/256. Hardware cryptography enables developers to meet evolving IoT security requirements more efficiently than with conventional software-only techniques often required by competing MCUs.

Based respectively on ARM Cortex-M3 and M4 cores, Jade and Pearl Gecko MCUs provide ample performance for connected devices while enabling developers to optimize battery life or use smaller batteries for space-constrained designs. The new MCUs feature an enhanced peripheral reflex system (PRS) that lets low-power peripherals operate autonomously while the MCU core sleeps, allowing connected devices to sleep longer, thus extending battery life. Energy-saving low active-mode current (63 µA/MHz) enables computationally intensive tasks to execute faster. Low sleep-mode current (1.4 µA down to 30 nA) and ultra-fast wake-up/sleep transitions further minimize energy consumption.

Jade and Pearl Gecko MCUs also integrate a high-efficiency DC-DC buck converter. Offering a total current capacity of 200 mA, the on-chip converter can provide a power rail for other system components in addition to powering the MCU. This power management innovation reduces BOM cost and board area by eliminating the need for an external DC-DC converter.

Engineering samples of EFM32JG Jade Gecko and EFM32PG Pearl Gecko MCUs are available now in 5 mm × 5 mm QFN32 and 7 mm × 7 mm QFN48 packages. Production quantities are planned for Q2 2016. Jade Gecko pricing begins at $1.24 in 10,000-unit quantities. The Pearl Gecko pricing begins at $1.65 in 10,000-unit quantities. The SLSTK3401A EFM32PG Pearl Gecko Starter Kit costs $29.99.

Source: Silicon Labs