Features
CPU Features
| • | Fully static RISC processor core, capable of operating
from 0 to 24 MHz with zero wait/hold states |
| • | Minimum 41.7 ns instruction cycle time with a 24-MHz internal
clock frequency, based on a 12-MHz external input |
| • | 30 independently vectored peripheral interrupts |
On-Chip Memory
| • | 256K bytes reprogrammable Flash program memory |
| • | 8K bytes Flash data memory |
| • | 10K bytes of static RAM data memory |
| • | Addresses up to 8 Mbytes of external memory |
Broad Range of Hardware Communications Peripherals
| • | Full CAN interface with 15 message buffers conforming
to CAN specification 2.0B active |
| • | ACCESS.bus serial bus (compatible with Philips I2C bus) |
| • | 8/16-bit SPI, Microwire/Plus serial interface |
| • | Universal Asynchronous Receiver/Transmitter (UART) |
| • | Advanced Audio Interface (AAI) to connect to external 8/
13-bit PCM Codecs as well as to ISDN-Controllers
through the IOM-2 interface (slave only) |
| • | CVSD/PCM converter supporting one bidirectional audio
connection |
General-Purpose Hardware Peripherals
| • | Dual 16-bit Multi-Function Timer |
| • | Versatile Timer Unit with four subsystems (VTU) |
| • | Four channel DMA controller |
| • | Timing and Watchdog Unit |
Flexible I/O
| • | Up to 40 general-purpose I/O pins (shared with on-chip
peripheral I/O pins) |
| • | Programmable I/O pin characteristics: TRI-STATE output,
push-pull output, weak pull-up input, high-impedance
input |
| • | Schmitt triggers on general purpose inputs |
| • | Multi-Input Wakeup |
Extensive Power and Clock Management Support
| • | On-chip Phase Locked Loop |
| • | Support for multiple clock options |
| • | Dual clock and reset |
| • | Power-down modes |
Power Supply
| • | I/O port operation at 2.5V to 3.3V |
| • | Core logic operation at 2.5V |
| • | On-chip power-on reset |
Temperature Range
| • | -40—C to +85—C (Industrial) |
Packages
| • | CSP-48, LQFP-100 |
Complete Development Environment
| • | Pre-integrated hardware and software support for rapid prototyping and production |
| • | Integrated environment |
| • | Project manager |
| • | Multi-file C source editor |
Description The CP3UB17 connectivity processor combines a powerful
RISC core with on-chip SRAM and Flash memory for high computing
bandwidth, hardware communications peripherals for high I/O bandwidth, and an external bus for system expandability.
On-chip communications peripherals include: CAN controller,
ACCESS.bus, Microwire/Plus, SPI, UART, and Advanced
Audio Interface (AAI). Additional on-chip peripherals
include DMA controller, CVSD/PCM conversion module,
Timing and Watchdog Unit, Versatile Timer Unit, Multi-
Function Timer, and Multi-Input Wakeup.
The CP3CN17 is backed up by the software resources designers need for rapid time-to-market, including an an operating system, peripheral drivers, reference designs, and an integrated development environment.
National Semiconductor offers a complete and industry proven
application development environment for CP3UB17
applications, including the IAR Embedded Workbench,
iSYSTEM winIDEA and iC3000 Active Emulator, Development
Board, and Application Software.
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