DESCRIPTION

The 3886 group is the 8-bit microcomputer based on the 740 family core technology.

The 3886 group is designed for controlling systems that require analog signal processing and include two serial I/O functions, A-D converters, D-A converters, system data bus interface function, watchdog timer, and comparator circuit.

The multi-master I2C bus interface can be added by option.

FEATURES

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

● Minimum instruction execution time .................................. 0.4 µs

(at 10 MHz oscillation frequency)

● Memory size

ROM ................................................................. 32K to 60K bytes

RAM ............................................................... 1024 to 2048 bytes

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

● Software pull-up resistors ................................................. Built-in

● Interrupts ................................................. 21 sources, 16 vectors

(Included key input interrupt)

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

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

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

● PWM output circuit ....................................................... 14-bit ✕ 2

● Bus interface .................................................................... 2 bytes

● I2C bus interface (option) ............................................. 1 channel

● A-D converter ............................................... 10-bit ✕ 8 channels

● D-A converter ................................................. 8-bit ✕ 2 channels

● Comparator circuit ...................................................... 8 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 10 MHz oscillation frequency)

In middle-speed mode ........................................... 2.7 to 5.5 V(*)

(at 10 MHz oscillation frequency)

In low-speed mode ............................................... 2.7 to 5.5 V (*)

(at 32 kHz oscillation frequency)

(*: 4.0 to 5.5 V for Flash memory version)

● Power dissipation

In high-speed mode ..........................................................40 mW

(at 10 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)

● Memory expansion possible (only for M38867M8A/E8A)

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

● Supply voltage ................................................. VCC = 5 V ± 10

● Program/Erase voltage ............................... VPP = 11.7 to 12.6 V

● Programming method ...................... Programming in unit of byte

● Erasing method

Batch erasing ........................................ Parallel/Serial I/O mode

Block erasing .................................... CPU reprogramming mode

● Program/Erase control by software command

● Number of times for programming/erasing ............................ 100

● Operating temperature range (at programming/erasing)

..................................................................... Normal temperature

APPLICATION

Household product, consumer electronics, communications, note

book PC, etc.