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Product Overview:

The 3858 group is the 8-bit microcomputer based on the 740 family coretechnology. The 3858 group is designed for the household products and officeautomation equipment and includes serial interface functions, 8-bit timer,16-bit timer, and A/D converter.

38000Series QzROM

  • You can download the Application Note "Difference between 3858Group and 3850A Group(QzROM version)" (Document No.REJ05B0822)from an "Application Notes" button in the left navigation on thispage.

 

Key Features:

  • Basic machine-language instructions: 71
  • Minimum instruction execution time: 0.32 μs (at 12.5 MHz oscillationfrequency)
  • Memory size
    • ROM: 48 K bytes
    • RAM: 1536 bytes
  • Programmable input/output ports: 34
  • Software pull-up resistors: Built-in
  • Interrupts: 19 sources, 16 vectors (external 8, internal 10, software1)
  • Timers: 8-bit × 4, 16-bit × 2
  • Serial interface
    • 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 × 9 channels
  • Clock generating circuit: Built-in 2 circuits (connect to external ceramicresonator or quartz-crystal oscillator)
  • Watchdog timer: 16-bit × 1
  • Power source voltage
    • In high-speed mode: 4.0 to 5.5 V (at 12.5 MHz oscillation frequency)
    • In high-speed mode: 2.7 to 5.5 V (at 6 MHz oscillation frequency)
    • In middle-speed mode: 2.7 to 5.5 V (at 12.5 MHz oscillation frequency, atmiddle-speed mode)
    • In low-speed mode: 2.7 to 5.5 V (at 32 kHz oscillation frequency)
  • Operating temperature range: –20 to 85 degrees C

Key Applications:

Office automation equipment, Factory automation equipment, Householdproducts, Consumer electronics, etc.

Product Lineup:


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