User manual

...the world's most energy friendly microcontrollers

2012-04-24 - Giant Gecko Family - d0053_Rev0.96 4

www.energymicro.com

Registers and bit fields marked with reserved are reserved for future use. These should be written to 0

unless otherwise stated in the Register Description. Reserved bits might be read as 1 in future devices.

Reset Value

The reset value denotes the value after reset.

Registers denoted with X have unknown value out of reset and need to be initialized before use. Note that

read-modify-write operations on these registers before they are initialized results in undefined register

values.

Pin Connections

Pin connections are given with a module prefix followed by a short pin name:

USn_TX (USART n TX pin)

The location for the pin names given in the module documentation can be found in the device-specific

datasheet.

2.2 Related Documentation

Further documentation on the EFM32GG family and the ARM Cortex-M3 can be found at the Energy

Micro and ARM web pages: