DESCRIPTION
The µPD70501 (V831) is a 32-bit RISC microprocessor for embedded control applications, with a high-performance 32-bit V830TM processor core and many peripheral functions such as a DRAM/ROM controller, 4-channel DMA controller, real-time pulse unit, serial interface, and interrupt controller.
In addition to high interrupt response speed and optimized pipeline structure, the V831 offers sum-of-products operation instructions, concatenated shift instructions, and high-speed branch instructions to realize multimedia functions, and therefore, can provide high performance in multimedia systems such as internet/intra-net systems, car navigation systems, high-performance televisions, and color FAXes.

FEATURES
• CPU function
   • V830-compatible instructions
   • Instruction cache : 4 KB
   • Instruction RAM : 4 KB
   • Data cache : 4 KB
   • Data RAM : 4 KB
   • Minimum number of instruction execution cycles : 1 cycle
   • Number of general purpose registers : 32 bits × 32
   • Memory space and I/O space : 4 GB each
• Interrupt/exception function
   • Non-maskable : External input : 1
   • Maskable : External input : 8 (of which 4 are multiplexed with internal sources)
                        Internal source: 11 types
• Bus control function
• Wait control function
• Memory access control function
• DMA controller : 4 channel
• Serial interface function
   • Asynchronous serial interface (UART): 1 channel
   • Clocked serial interface (CSI) : 1 channel
   • Dedicated baud rate generator (BRG) : 1 channel
• Timer/counter function
   • 16-bit timer/event counter : 1 channel
   • 16-bit interval timer : 1 channel
• Port function : 3 I/O ports
• Clock generation function : PLL clock synthesizer
• Standby function : HALT and STOP modes
• Debug function
   • Debug-dedicated synchronous serial interface : 1 channel
   • Trace-dedicated interface : 1 channel