16-bit fixed point digital signal processor The UPD77111 is a digital signal processor (DSP) manufactured by NEC. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Manufacturer:** NEC (now part of Renesas Electronics)
- **Type:** Digital Signal Processor (DSP)
- **Architecture:** 16-bit fixed-point DSP
- **Clock Speed:** Up to 20 MHz
- **Instruction Cycle Time:** 100 ns (at 20 MHz)
- **On-Chip RAM:** 1K words (16-bit)
- **On-Chip ROM:** 4K words (16-bit)
- **Data Bus Width:** 16-bit
- **Address Bus Width:** 16-bit
- **Operating Voltage:** 5V ±10%
- **Package Type:** 64-pin plastic QFP (Quad Flat Package)
- **Operating Temperature Range:** -40°C to +85°C
### **Descriptions:**
- The UPD77111 is a high-performance DSP designed for real-time signal processing applications.
- It features a Harvard architecture with separate program and data memory spaces.
- Optimized for digital filtering, FFT, and other DSP algorithms.
- Includes hardware multipliers and ALUs for efficient arithmetic operations.
### **Features:**
- **High-Speed Processing:** 100 ns instruction cycle time.
- **On-Chip Memory:** Includes 1K words of RAM and 4K words of ROM.
- **Hardware Multiplier:** 16 × 16-bit multiplier for fast arithmetic operations.
- **Multiple Addressing Modes:** Supports direct, indirect, and immediate addressing.
- **Interrupt Capability:** Supports external and internal interrupts.
- **Low Power Consumption:** Designed for power efficiency in embedded applications.
- **Versatile I/O:** Includes serial I/O ports and parallel interfaces.
This information is based solely on the manufacturer's specifications for the UPD77111 DSP.
