GENERAL DESCRIPTION

The 3882 group is the 8-bit microcomputer based on the 740 family core technology.

The 3882 group is designed for Keyboard Controller for the note book PC.

FEATURES

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

● Minimum instruction execution time .................................. 0.5 µs

(at 8 MHz oscillation frequency)

● Memory size

ROM ............................................................................. 20K bytes

RAM ............................................................................ 1024 bytes

● Programmable input/output ports ............................................ 72

● Software pull-up transistors ....................................................... 8

● Interrupts ................................................. 17 sources, 14 vectors

● Timers ............................................................................. 8-bit ✕ 4

● Watchdog timer ............................................................ 16-bit ✕ 1

● LPC interface .............................................................. 2 channels

● Serialized IRQ ................................................................ 3 factors

● Clock generating circuit ..................................... Built-in 1 circuits

(connect to external ceramic resonator)

● Power source voltage ................................................ 3.0 to 3.6 V

● Power dissipation

In high-speed mode ..........................................................20 mW

(at 8 MHz oscillation frequency, at 3.3 V power source voltage)

● Operating temperature range.................................... –20 to 85°C

APPLICATION

Note book PC