Features include 512Kbytes of Flash and up to 176Kbytes of SRAM with a maximum operating speed of 120MHz. Eight flexible communication units comprising USARTs, SPIs, and I2C-bus interfaces (TWIs), are some of the peripherals included. Three software-selectable, low-power modes are available on the G55G/G55J, sleep, wait, and backup.
Real-time event management permits peripherals to receive, react to, and send events in Active and Sleep modes without processor intervention. The flexible clock system provides the capability of having different clock frequencies for some peripherals, allowing for power consumption optimization.
Also without affecting the peripheral processing, the processor and bus clock frequency can be modified. Small package options of 49-pin WLCSP, 64-pin QFN, and 64-pin LQFP are combined with a rich and flexible peripheral set.