SX20AC

SX20AC/SX28AC Configurable Communications Controllers with EE/Flash Program Memory, In-System Programming Capability and On-Chip Debug 1.0 PRODUCT OVERVIEW 1.1. Introduction The Parallax SX family of configurable communications controllers is fabricated in an advanced CMOS process technology. The advanced process, combined with a RISC-like architecture, allows high-speed computation, flexible I/O control, and efficient data manipulation. Throughput is enhanced by operating the device at frequencies up to 75 MHz and by optimizing the instruction set to include mostly single-cycle instructions. The deterministic architecture of the SX provides reliable performance for time-critical applications. In addition, the SX architecture is flash-based and therefore reprogrammable. On-chip functions include a generalpurpose 8-bit timer with prescaler, an analog comparator, a brown-out detector, a watchdog timer, a power-save mode with multi-source wakeup capability, an internal R/C oscillator, user-selectable clock modes, and highcurrent outputs. These features enable the SX to be used as a general-purpose, high-speed microcontroller in a variety of applications. Figure 1-1: Block Diagram Parallax and the Parallax logo are trademarks of Parallax, Inc. SX is a trademark of Ubicom Inc, used with permission. I2C is a trademark of Philips Corporation. All other trademarks are the property of their respective holders. Copyright © Parallax Inc. Revision 1.7, 4/23/2008 Page 1 of 51 Par...