The DAC12 module is a 12-bit, voltage output DAC featuring internal or external reference selection, programmable settling time for optimal power consumption and can be configured in an 8- or 12-bit mode. When multiple DAC12 modules are present, they may be grouped together for synchronous update operation. The supply voltage supervisor (SVS) is a configurable module used to monitor the AVCC supply voltage or an external voltage. The SVS can be configured to set a flag or generate a POR reset when the supply voltage or external voltage drops below a user-selected threshold.