DESCRIPTION

These are single-chip microcomputers designed with high-performance CMOS silicon gate technology, including the internal flash memory. 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

[M37902FCCHP]

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

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

[M37902FGCHP]

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

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

[M37902FJCHP]

Flash memory (User ROM area) ................................. 498 Kbytes

RAM ...........................................................................12288 bytes

[All of the above computers]

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

• Instruction execution time

The fastest instruction at 26 MHz frequency ........................ 38 ns

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

• Interrupts ........... 6 external sources, 16 internal sources, 7 levels

• Multi-functional 16-bit timer ................................................... 5 + 3

• Serial I/O (UART or Clock synchronous) ..................................... 2

• 10-bit A-D converter ............................................ 8-channel inputs

• 8-bit D-A converter ............................................ 3-channel outputs

• 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–P8, P10, P11) ............... 84

• 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