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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

¡ñ Basic machine-language instructions ...................................... 71

¡ñ Minimum instruction execution time .................................. 0.4 ?s

(at 10 MHz oscillation frequency)

¡ñ Memory size

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

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

¡ñ Programmable input/output ports ............................................ 72

¡ñ Software pull-up resistors ................................................. Built-in

¡ñ Interrupts ................................................. 21 sources, 16 vectors

(Included key input interrupt)

¡ñ Timers ............................................................................. 8-bit ? 4

¡ñ Serial I/O1 .................... 8-bit ? 1(UART or Clock-synchronized)

¡ñ Serial I/O2 ................................... 8-bit ? 1(Clock-synchronized)

¡ñ PWM output circuit ....................................................... 14-bit ? 2

¡ñ Bus interface .................................................................... 2 bytes

¡ñ I2C bus interface (option) ............................................. 1 channel

¡ñ A-D converter ............................................... 10-bit ? 8 channels

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

¡ñ Comparator circuit ...................................................... 8 channels

¡ñ Watchdog timer ............................................................ 16-bit ? 1

¡ñ Clock generating circuit ..................................... Built-in 2 circuits

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

¡ñ 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)

¡ñ Power dissipation

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

(at 10 MHz oscillation frequency, at 5 V power source voltage)

In low-speed mode ............................................................ 60 ?W

(at 32 kHz oscillation frequency, at 3 V power source voltage)

¡ñ Memory expansion possible (only for M38867M8A/E8A)

¡ñ Operating temperature range.................................... ¨C20 to 85¡ãC

¡ñ Supply voltage ................................................. VCC = 5 V ¡À 10

¡ñ Program/Erase voltage ............................... VPP = 11.7 to 12.6 V

¡ñ Programming method ...................... Programming in unit of byte

¡ñ Erasing method

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

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

¡ñ Program/Erase control by software command

¡ñ Number of times for programming/erasing ............................ 100

¡ñ Operating temperature range (at programming/erasing)

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

APPLICATION

Household product, consumer electronics, communications, note

book PC, etc.