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The μPD17704, 17705, 17707, 17708, and 17709 are 4-bit single-chip CMOS microcontrollers containing hardware for digital tuning systems.

Provided with a wealth of hardware, these microcontrollers are available in many variations of ROM and RAM capacities to support various applications.

Therefore, a high-performance, multi-function digital tuning system can be configured with only one chip. In addition, a one-time PROM model, μPD17P709, which can be written only once and therefore is ideal for program evaluation and small-scale production of a μPD17704, 17705, 17707, 17708, or 17709 system, is also available.

FEATURES

? Instruction execution time 1.78 μs (with fX = 4.5-MHz crystal oscillator)

? PLL frequency synthesizer

Dual modulus prescaler (130 MHz MAX.), programmable divider, phase comparator, charge pump

? Abundant peripheral hardware units

General-purpose I/O ports, serial interfaces, A/D converter, D/A converter (PWM output), BEEP output, frequency counter

? Many interrupts

External : 6 sources

Internal : 6 sources

? Power-ON reset, CE reset, and power failure detection circuit

? Supply voltage: VDD = 5 V ± 10