Описание
The ÉlanSC520 microcontroller is a full-featured microcontroller developed for the general embedded market. The ÉlanSC520 microcontroller combines a 32-bit, low-voltage Am5x86 CPU with a set of integrated peripherals suitable for both real-time and PC/ AT-compatible embedded applications. An integrated PCI host bridge, SDRAM controller, enhanced PC/AT-compatible peripherals, and advanced debugging features provide the system designer with a wide range of on-chip resources, allowing support for legacy devices as well as new devices available in the current PC marketplace. Designed for medium- to high-performance applications in the telecommunications, data communications, and information appliance markets, the ÉlanSC520 microcontroller is particularly well suited for applications requiring high throughput combined with low latency. The compact Plastic Ball Grid Array (PBGA) package provides a high degree of functionality in a very small form factor, making it cost-effective for many applications. A 0.25-micron CMOS manufacturing process allows for low power consumption along with high performance.
- Industry-standard Am5x86® CPU with floating point unit (FPU) and 16-Kbyte write-back cache
- 100-MHz and 133-MHz operating frequencies
- Low-voltage operation (core VCC = 2.5 V)
- 5-V tolerant I/O (3.3-V output levels)
- E86™ family of x86 embedded processors
- Part of a software-compatible family of microprocessors and microcontrollers well supported by a wide variety of development tools
- Integrated PCI host bridge controller leverages standard peripherals and software
- 33 MHz, 32-bit PCI bus Revision 2.2-compliant
- High-throughput 132-Mbyte/s peak transfer
- Supports up to five external PCI masters
- Integrated write-posting and read-buffering for high-throughput applications
- Synchronous DRAM (SDRAM) controller
- Supports 16-, 64-, 128-, and 256-Mbit SDRAM
- Supports 4 banks for a total of 256 Mbytes
- Error Correction Code provides system reliability
- Buffers improve read and write performance
- AMDebug™ technology offers a low-cost solution for the advanced debugging capabilities required by embedded designers
- Allows instruction tracing during execution from the Am5x86 CPU’s internal cache
- Uses an enhanced JTAG port for low-cost debugging
- Parallel debug port for high-speed data exchange during in-circuit emulation
- General-Purpose (GP) bus with programmable timing for 8- and 16-bit devices provides good performance at low cost
- ROM/Flash controller for 8-, 16-, and 32-bit devices
- Enhanced PC/AT-compatible peripherals provide improved performance
- Enhanced programmable interrupt controller (PIC) prioritizes 22 interrupt levels (up to 15 external sources) with flexible routing
- Enhanced DMA controller includes double buffer chaining, extended address and transfer counts, and flexible channel routing
- Two 16550-compatible UARTs operate at baud rates up to 1.15 Mbit/s with optional DMA interface
- Standard PC/AT-compatible peripherals
- Programmable interval timer (PIT)
- Real-time clock (RTC) with battery backup capability and 114 bytes of RAM
- Additional integrated peripherals
- Three general-purpose 16-bit timers provide flexible cascading for 32-bit operation
- Watchdog timer guards against runaway software
- Software timer
- Synchronous serial interface (SSI) offers full-duplex or half-duplex operation
- Flexible address decoding for programmable memory and I/O mapping and system addressing configuration
- 32 programmable input/output (PIO) pins
- Native support for pSOS, QNX, RTXC, VxWorks, and Windows® CE operating systems
- Industry-standard BIOS support
- Plastic Ball Grid Array (PBGA388) package
