MOS INTEGRATED CIRCUIT

FEATURES • 45 instructions (subset of the mPD7500H SET B) • Instruction cycle: 2.86 microseconds (700 kHz, at 5V) with ceramic oscillator • Program memory (ROM): 1,024 words x 8 bits • Data memory (RAM): 64 words x 4 bits • Test sources: 1 external and 1 internal • 8-bit timer/event counter

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4-BIT SINGLE-CHIP MICROCOMPUTER

SEMICONDUCTOR SELECTION GUIDE Microcomputer IC Memory Semi-Custom IC Particular Purpose IC General Purpose Linear IC Transistor / Diode / Thyristor Microwave Device / Consumer Use High Frequency Device Optical Device Packages Index (Quick Reference by Type N

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NEC

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4-BIT SINGLE-CHIP MICROCOMPUTER

DESCRIPTION\nThe µPD7566A is a product of the µPD7554, 7564 sub-series which is a low-end, low-cost version of the µPD7500 series microcomputers. This 4-bit single-chip microcomputer has fewer ports than the other products in the µPD7500 series, in order to reduce the package size, and is especially • 45 instructions (subset of the µPD7500H SET B)\n• Instruction cycle: 2.86 microseconds (700 kHz, at 5V) with ceramic oscillator\n• Program memory (ROM): 1,024 words x 8 bits\n• Data memory (RAM): 64 words x 4 bits\n• Test sources: 1 external and 1 internal\n• 8-bit timer/event counter\n• 19 I/O li;

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