DESCRIPTION

The 3850 group (spec. H) is the 8-bit microcomputer based on the 740 family core technology.

The 3850 group (spec. H) is designed for the household products and office automation equipment and includes serial I/O functions, 8-bit timer, and A-D converter.

FEATURES

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

● Minimum instruction execution time .................................. 0.5 µs (at 8 MHz oscillation frequency)

● Memory size

ROM ................................................................... 8K to 32K bytes

RAM ................................................................. 512 to 1024 bytes

● Programmable input/output ports ............................................ 34

● Interrupts ................................................. 15 sources, 14 vectors

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

● Serial I/O1 .................... 8-bit ✕ 1(UART or Clock-synchronized)

● Serial I/O2 ................................... 8-bit ✕ 1(Clock-synchronized)

● PWM ............................................................................... 8-bit ✕ 1

● A-D converter ............................................... 10-bit ✕ 5 channels

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

● Clock generating circuit..................................... Built-in 2 circuits

(connect to external ceramic resonator or quartz-crystal oscillator)

● Power source voltage

In high-speed mode .................................................. 4.0 to 5.5 V (at 8 MHz oscillation frequency)

In middle-speed mode ............................................... 2.7 to 5.5 V (at 8 MHz oscillation frequency)

In low-speed mode .................................................... 2.7 to 5.5 V (at 32 kHz oscillation frequency)

● Power dissipation

In high-speed mode ..........................................................34 mW(at 8 MHz oscillation frequency, at 5 V power source voltage)

In low-speed mode ............................................................ 60 µW (at 32 kHz oscillation frequency, at 3 V power source voltage)

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

APPLICATION

Office automation equipment, FA equipment, Household products, Consumer electronics, etc.