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DESCRIPTION
SKV71PXXXB, a 4-bit sound controller, is architected with a
4-channel SPU for MIDI playback, a 4-bit RISC CPU, a 14-bit
PWM, 12-bit current DAC, 16 IOs and 1 input pin (with pull low
resistor ), 256-nibble RAM, and OTP with density of 680K/ 340K x
12-bit of memory space. The operating voltage ranges from
2.0V through 5.5V and operating speed is 1M/2MHz, configurable
through inner oscillator. Other features include Low Voltage
Reset, IR carry output, watchdog, five interrupt sources with two
time-bases, etc.