NEC D8257C-2 Integrated Chip
可编程DMA控制器 NEC D8257C-2可编程DMA控制器IC，具有四通道直接内存访问，5 MHz工作频率和40引脚塑料封装，设计用于基于微处理器的系统和嵌入式电子设备。
NEC D8257C-2 Programmable DMA Controller
The NEC D8257C-2 is a reliable programmable Direct Memory Access (DMA) controller integrated circuit designed to efficiently manage data transfer between memory and peripheral devices without continuous CPU intervention. This controller improves system performance and data throughput in microprocessor-based systems and embedded applications.
Manufacturer: NEC
Type: Integrated Chip / Programmable DMA Controller
Model: D8257C-2
Part No.: 8541E8
Features
Four-Channel DMA Controller
Priority DMA Request Logic
Channel Inhibit Logic
Terminal Count and Modulo 128 Outputs
Automatic Load Mode
Single TTL Clock
Single +5 V ±10% Power Supply
Expandable Architecture
Available in Extended Temperature Range
| No. of Pins | 40-pin |
| Material | Plastic |
| Operation Frequency | 5 MHz |
| Recommendation | Ideal for upgrading or maintaining microprocessor-based control systems, embedded devices, and industrial electronic equipment requiring efficient high-speed memory data transfer. |
