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Description

The 3819 group is a 8-bit microcomputer based on the 740 family core technology.

The 3819 group has a flourescent display automatic display circuit and an 16-channel 8-bit A-D converter as additional functions.

The various microcomputers in the 3819 group include variations of internal memory size and packaging. For details, refer to the section on part numbering.

For details on availability of microcomputers in the 3819 group, refer to the section on group expansion.

Features

1. Basic machine-language instructions  : 71

2. The minimum instruction execution time  : 0.48 us (at 84 MHz oscillation frequency)

3. Memory size 

 (1) ROM : 4K to 60 K bytes

 (2) RAM  : 192 to 2048 bytes

4. Programmable input/output ports  : 54

5. High-breakdown-voltage output ports  : 52

6. Interrupts : 20 sources, 16 vectors

7. Timers  : 8-bit x 6

8. Serial I/O (Serial I/O1 has an automatic transfer function)

   :  8-bit x 3 (clock-synchronized)

9. PWM output circuit  8-bit x 1(also functions as timer 6)

10. A-D converter  8-bit x 16 channels