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SM565 Datasheet

Part NameDescriptionManufacturer
SM565 4-Bit Single-Chip Microcomputer Sharp
Sharp Electronics Sharp
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DESCRIPTION
The SM565 is a CMOS 4-bit single-chip microcomputer incorporating carrier output circuit for remote control, ROM, RAM, I/O ports, serial interface and timer/ counter. It provides five kinds of interrupts and subroutine stack function using the RAM area. Provided with a 256 segments LCD drive circuit, this microcomputer is applicable to a multi-functional AV remote control system, high performance hand-held LCD games or any other similar system with low power consumption.

FEATURES
• 8,192 × 8-bits ROM Capacity
• 256 × 4-bits RAM Capacity (Including 64 × 4-bits Display RAM)
• 98 Instruction Sets
• A RAM Area is Used as Stack Area
• I/O Ports
    – 4 Input
    – 11 Input/Output (plus 16 Also Used as LCD Segment Port)
• Interrupts
    – Internal Interrupt × 4 (Timer/Counter, f4 Signal, Serial I/O, Divider Overflow)
    – External Interrupt × 1 (P0 Signal)
• Timer/Counter 8-bits × 1
• Serial Interface 8-bits × 1
• Built-in Main Clock Oscillator for System Clock
• Built-in Sub Clock Oscillator for Real Time Clock
• Built-in 15 Stages Divider for Real Time Clock
• Built-in LCD Driver
    – 256 Segments
    – 1/3 Bias
    – 1/4 Duty Cycle (If LCD Drive circuit is used, a crystal oscillator circuit needs to be constituted between OSCIN and OSCOUT)
• Built-in Carrier Output Circuit for Remote Control
    – Carrier Frequency 37.9 kHz
    – Basic Oscillation Frequency (Main Clock) 455 kHz
    – 1/3 or 1/2 (Mask Option) Duty Cycle
    – Reversal Polarity (Mask Option)
• Instruction Cycle Time 8.79 µs (TYP., 455 kHz at 3 V)
• Buzzer Output
• Standby Function
• Supply Voltage 2.4 V to 5.5 V
• 100-pin QFP (QFP100-P-1420) Package

 

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