DESCRIPTION

The 3802 group is the 8-bit microcomputer based on the 740 family core technology. The 3802 group is designed for controlling systems that require analog signal processing and include two serial I/O functions, A-D converters, and D-A converters. The various microcomputers in the 3802 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 3802 group, refer to the section on group expansion.

FEATURES

? Basic machine-language instructions ....................................... 71

? The minimum instruction execution time ............................ 0.5 μs (at 8 MHz oscillation frequency)

? Memory size

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

RAM ................................................................. 384 to 1024 bytes

? Programmable input/output ports ............................................. 56

? Interrupts .................................................. 16 sources, 16 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 .................................................. 8-bit ?8 channels

? D-A converter.................................................. 8-bit ?2 channels

? Clock generating circuit ....................... Internal feedback resistor

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

? Power source voltage ..................................................3.0 to 5.5 V

(Extended operating temperature version : 4.0 to 5.5 V)

? Power dissipation ............................................................... 32 mW

? Memory expansion possible

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

(Extended operating temperature version : –40 to 85°C)