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DESCRIPTION

The 3827 group is the 8-bit microcomputer based on the 740 family core technology.

The 3827 group has the LCD drive control circuit, the A-D/D-A converter, the UART, and the PWM as additional functions. The various microcomputers in the 3827 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 3827 group, refer to the section on group expansion.

FEATURES

● Basic machine-language instructions ...................................... 71

● The minimum instruction execution time ...........................0.5 ?s

(at 8MHz oscillation frequency)

● Memory size

ROM ................................................................. 4 K to 60 K bytes

RAM ................................................................. 192 to 2048 bytes

● Programmable input/output ports ............................................ 55

● Output port ................................................................................. 8

● Input por t .................................................................................... 1

● Interrupts ................................................. 17 sources, 16 vectors

(includes key input interrupt)

● Timers ........................................................... 8-bit ?3, 16-bit ?2