Overview
The ADSP-2185NKST-320 is a single-chip microcomputer from Analog Devices Inc., optimized for digital signal processing (DSP) and other high-speed numeric processing applications. It is part of the ADSP-218xN series and is built on the ADSP-2100 family base architecture, which includes three computational units, data address generators, and a program sequencer. This device is particularly suited for applications requiring high computational performance and flexible system design.
Key Specifications
| Specification | Details |
|---|---|
| Processor Type | Digital Signal Processor (DSP) |
| Instruction Cycle Time | 30 ns |
| Sustained Performance | 33 MIPS (at 5V), up to 80 MIPS (at lower voltages) |
| On-Chip Memory | 80 KB (16K words program RAM, 16K words data RAM) |
| Internal DMA Port | 16-bit, mode selectable |
| Byte Memory Interface | 4 MByte, mode selectable |
| Serial Ports | Two double-buffered serial ports (SPORT0 and SPORT1) |
| Interrupts | Six external interrupts, seven internal interrupts |
| Flag Pins | 13 programmable flag pins |
| Timer | Programmable 16-bit interval timer with prescaler |
| Package | 100-Lead LQFP |
| Operating Voltage | 1.8V (ADSP-2185NKST-320) |
| Operating Temperature | 0°C to 70°C |
Key Features
- High Performance: The ADSP-2185NKST-320 offers high computational performance with 33 MIPS at 5V and up to 80 MIPS at lower voltages.
- Flexible Memory: It includes 80 KB of on-chip memory, configured as 16K words of program RAM and 16K words of data RAM, with dual-purpose program memory for both instruction and data storage.
- Advanced Computational Units: Features independent ALU, multiplier/accumulator, and barrel shifter computational units, along with two independent data address generators and a powerful program sequencer.
- Serial Communication: Includes two double-buffered serial ports (SPORT0 and SPORT1) with companding hardware and automatic data buffering.
- Interrupt Capabilities: Supports six external interrupts and seven internal interrupts, with a programmable interval timer and global interrupt masking.
- Low Power Mode: Features power-down circuitry for low power dissipation in idle mode, making it suitable for battery-operated portable equipment.
- Programmable I/O: Provides 13 programmable flag pins and supports UART emulation through software SPORT reconfiguration.
- Debugging Support: Includes an ICE-Port™ emulator interface for debugging in final systems.
Applications
- Digital Signal Processing: Ideal for various DSP applications such as audio processing, image processing, and telecommunications.
- High-Speed Numeric Processing: Suitable for applications requiring fast numeric computations, such as scientific simulations and data analysis.
- Embedded Systems: Used in embedded systems that require high computational performance and low power consumption, such as industrial control systems and medical devices.
- Multiprocessor Systems: Can be used in multiprocessor configurations for more complex and distributed processing tasks.
- Portable Equipment: Due to its low power dissipation, it is suitable for battery-operated portable equipment like handheld devices and mobile communication devices.
Q & A
- What is the primary application of the ADSP-2185NKST-320?
The ADSP-2185NKST-320 is primarily used for digital signal processing (DSP) and other high-speed numeric processing applications.
- What is the instruction cycle time of the ADSP-2185NKST-320?
The instruction cycle time is 30 ns.
- How much on-chip memory does the ADSP-2185NKST-320 have?
The device has 80 KB of on-chip memory, configured as 16K words of program RAM and 16K words of data RAM.
- What types of serial ports does the ADSP-2185NKST-320 have?
The device includes two double-buffered serial ports (SPORT0 and SPORT1) with companding hardware and automatic data buffering.
- How many external interrupts does the ADSP-2185NKST-320 support?
The device supports six external interrupts.
- What is the operating voltage of the ADSP-2185NKST-320?
The operating voltage is 1.8V.
- What type of package does the ADSP-2185NKST-320 come in?
The device is packaged in a 100-Lead LQFP.
- Does the ADSP-2185NKST-320 support low power modes?
Yes, it features power-down circuitry for low power dissipation in idle mode.
- Is the ADSP-2185NKST-320 RoHS compliant?
Yes, the device is lead-free and RoHS compliant.
- What is the temperature range for the ADSP-2185NKST-320?
The operating temperature range is 0°C to 70°C.
