Overview
The ADSP-2187L, produced by Analog Devices Inc., is a single-chip, 3.3V microcomputer optimized for digital signal processing (DSP) and other high-speed numeric processing applications. This microcomputer is part of the ADSP-218xL series and is designed to provide high performance and flexibility in various DSP applications. It combines the base architecture of the ADSP-2100 family with additional features such as two high-speed serial ports, a 16-bit internal DMA port, a byte DMA port, a programmable timer, and extensive interrupt capabilities. The ADSP-2187L is particularly suited for battery-operated portable equipment due to its five power-down modes and low CMOS standby power dissipation.
Key Specifications
| Parameter | Specification |
|---|---|
| Instruction Cycle Time | Up to 19 ns |
| Sustained Performance | 52 MIPS |
| Voltage | 3.3V |
| On-Chip Memory | 160 KB (32Kx24 Program RAM, 32Kx16 Data RAM) |
| Package Type | 100-Lead LQFP (14mm x 14mm) |
| Operating Temperature | -40°C to +85°C |
| Serial Ports | Two high-speed serial ports |
| DMA Ports | 16-bit internal DMA port, 8-bit byte DMA port |
| Timer | Programmable 16-bit interval timer with prescaler |
| Interrupt Capabilities | Extensive interrupt capabilities |
Key Features
- Single-cycle instruction execution and context switch
- Three-bus architecture allowing dual operand fetches in every instruction cycle
- Independent ALU, multiplier/accumulator, and barrel shifter computational units
- Two independent data address generators and a powerful program sequencer
- Programmable memory strobe and separate I/O memory transfers
- Five power-down modes for low power consumption
- New instructions including bit manipulation, new ALU constants, and global interrupt masking
Applications
The ADSP-2187L is suitable for a variety of applications that require high-speed numeric processing and digital signal processing. These include:
- Digital signal processing in audio, image, and video applications
- High-speed numeric processing in scientific and engineering applications
- Battery-operated portable equipment due to its low power consumption features
- Embedded systems requiring real-time processing and control
- Telecommunications and networking equipment
Q & A
- What is the primary application of the ADSP-2187L?
The ADSP-2187L is primarily used for digital signal processing (DSP) and other high-speed numeric processing applications.
- What is the instruction cycle time of the ADSP-2187L?
The instruction cycle time of the ADSP-2187L is up to 19 ns.
- How much on-chip memory does the ADSP-2187L have?
The ADSP-2187L has 160 KB of on-chip memory, configured as 32Kx24 Program RAM and 32Kx16 Data RAM.
- What types of DMA ports are available on the ADSP-2187L?
The ADSP-2187L features a 16-bit internal DMA port and an 8-bit byte DMA port.
- Does the ADSP-2187L support power-down modes?
- What is the operating temperature range of the ADSP-2187L?
The operating temperature range of the ADSP-2187L is -40°C to +85°C.
- What package type is the ADSP-2187L available in?
The ADSP-2187L is available in a 100-Lead LQFP package.
- Does the ADSP-2187L have any new instructions compared to previous models?
- Is the ADSP-2187L pin compatible with other members of the 218x family?
- What is the sustained performance of the ADSP-2187L?
The sustained performance of the ADSP-2187L is 52 MIPS.
