DESCRIPTION
The M37920S4CGP is a single-chip microcomputers designed with high-performance CMOS silicon gate technology. These are housed in 100-pin plastic molded QFP. This microcomputer supports the 7900 Series instruction set, which are enhanced and expanded instruction set and are upper-compatible with the 7700/7751 Series instruction set.

DISTINCTIVE FEATURES
<Microcomputer mode>
• Number of basic machine instructions .................................... 203
• Memory
   RAM .............................................................................2048 bytes
   ROM ................................................................................. External
• Instruction execution time
   The fastest instruction at 20 MHz frequency ........................ 50 ns
• Single power supply .................................................... 5 V ± 0.5 V
• Interrupts ........... 6 external sources, 17 internal sources, 7 levels
• Multi-functional 16-bit timer ................................................... 5 + 3
• Serial I/O (UART or Clock synchronous) ..................................... 2
• 10-bit A-D converter ............................................ 4-channel inputs
• DMA controller ..............................................................4-channels
• DRAM controller
• Real-time output
   ....4 bits × 2 channels, or 6 bits × 1 channel + 2 bits × 1 channel
• 12-bit watchdog timer
• Programmable input/output (ports P2–P9, P12) ....................... 49

APPLICATION
   Telecommunications equipment such as copiers, printers, typewriters, facsimiles, optical disk drives, HDD, mobile radio communication equipment, ISDN terminals
   Control devices for office automation equipment such as persona computers