The integrated peripheral functions provide high performance and flexibility. The DRAM controller supports up to 512 Mbytes of DRAM. The MCF5206 processor supports both page-mode and extended-data-out DRAMs. The serial interfaces consist of a programmable full duplex DUART and a separate I2C1-compatible Motorola bus (M-Bus interface). The two 16-bit general-purpose multimode timers provide separate input and output signals. For system protection, the processor includes a programmable 16-bit software watchdog timer and several bus monitors. In addition, common system functions such as chip-selects, interrupt control, bus arbitration, and IEEE 1149.1 Test (JTAG) support are included. A sophisticated debug interface supports both background-debug mode and real-time trace. This interface is common to all ColdFire-based processors and allows common emulator support across the entire ColdFire Family.