NXP Semiconductors XA-SCC
The XA-SCC device is a member of Philips’ XA (eXtended Architecture) family of high performance 16-bit single-chip microcontrollers. The XA-SCC includes a complete onboard DRAM controller capable of supporting up to 32MegaBytes of DRAM. The XA-SCC device combines many powerful communications oriented peripherals on one chip.GENERAL DESCRIPTION
4 Full Function SCC’s, 8 DMA channels (2 per SCC), hardware autobaud up to 921.6Kbps, IDL TDM interface, two timers/counters, 1 watchdog timer, and multiple general purpose I/O ports. It is suited for many high performance embedded communications functions, including ISDN terminal adaptors and Asynchronous Muxes.● Memory controller also generates 6 chip selects to support SRAM, ROM, Flash, EPROM, peripheral chips, etc. without external glue.
● Supports off-chip addressing up to 32 MB (2 x 2**24 address spaces) in Harvard architecture, or 16MB in unified memory configuration.
● A clock output reference “ClkOut” is added to simplify external bus interfacing.
● High performance 8-channel DMA Controller offloads the CPU for moving data to/from SCC’s and memory.
● Two standard counter/timers with enhanced features (same as XA-G3 T0, T1). Both timers have a toggle output capability. SPECIFIC
FEATURES
OF THE XA-SCC range, available in 100 pin LQFP package.● 3.3V to 5.5V operation to 30MHz over the industrial temperature
● 4 onboard SCC’s for 2B+D plus Asynch port, or any combination of 4 sync/async ports.