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UPD17068 Datasheet 4-bit Single-chip Microcontroller

Manufacturer: NEC (now Renesas Electronics)

Overview: DATA SHEET MOS INTEGRATED CIRCUIT µPD17068 4-BIT SINGLE-CHIP MICROCONTROLLER CONTAINING IMAGE DISPLAY CONTROLLER AND PLL FREQUENCY SYNTHESIZER FOR DIGITAL TUNING SYSTEMS The µPD17068 is a 4-bit single-chip microcontroller for digital tuning systems. It contains an image display controller (IDC) that supports many types of display, and a PLL synthesizer. The CPU of the µPD17068 is capable of 4-bit parallel addition, logical operations, bit tests, setting/resetting of a carry flag, and supports a powerful interrupt function and timer function. The image display controller for on-screen display is user-programmable, allowing a range of displays to be programmed. The peripheral hardware includes a full complement of I/O ports, controlled with powerful I/O instructions, as well as a serial interface, a 6-bit A/D converter, and an 8-bit D/A converter (PWM output).

Key Features

  • Program memory (ROM) : 24K bytes (12032 × 16 bits) Character ROM (CROM) : 4086 × 24 bits (255 characters) Data memory (RAM) : 1007 × 4 bits Video RAM (VRAM) : 672 × 4 bits (can be used for data memory) Address stack : 12 levels Interrupt stack : 2 levels Instruction execution time : 2 µs (when an 8 MHz crystal is used) PLL frequency synth.

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