DESCRIPTION

These are single-chip microcomputers designed with high-performance CMOS silicon gate technology, including the internal flash memory. These are housed in 100-pin plastic molded QFP. These microcomputers support 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

• Number of basic machine instructions .................................... 203

• Memory

[M37920FCCGP, M37920FCCHP]

Flash memory (User ROM area) ................................. 120 Kbytes

RAM .............................................................................4096 bytes

[M37920FGCGP, M37920FGCHP]

Flash memory (User ROM area) ................................. 248 Kbytes

RAM .............................................................................6144 bytes

[All of the above computers]

Flash memory (Boot ROM area) ................................... 16 Kbytes

• Instruction execution time

The fastest instruction at 20 MHz frequency ........................ 50 ns

• Single power supply .................................................... 5 V ± 0.5 V

• Interrupts ........... 6 external sources, 20 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 P0–P12) .............................. 85

• Power supply voltage .................................................. 5 V ± 0.5 V

• Programming/Erase voltage ........................................ 5 V ± 0.5 V

• Programming method ............ Programming in a unit of 256 bytes

• Erase method ............................................Block erase or Total erase

(Data protection per block is enabled.)

• Programming/Erase control by software command

• Maximum number of reprograms ............................................ 100

APPLICATION

Control devices for personal computer peripheral equipment such as CD-ROM drives, DVD-ROM drives, hard disk drives, high density FDD, printers

Control devices for office equipment such as copiers and facsimiles Control devices for industrial equipment such as communication and measuring instruments