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The 87C196LA is a high-performance 16-bit microcontroller. The 87C196LA is composed of a high-speed core with the following peripherals: an asynchronous/synchronous serial l/0 port (8096 compatible) with a dedicated 16-bit baud-rate generator; an additional synchronous serial l/0 port with full duplex master/slave transceivers; a six-channel A/D converter with sample and hold; a flexible timer/counter structure with prescaler, cascading, and quadrature capabilities; six modularized, multiplexed high-speed l/0 for capture and compare (called event processor array) with 200 ns resolution and double buffered inputs; and a sophis- ticated, prioritized interrupt structure with programmable peripheral transaction server (PTS). The clock doubler circuitry and oscillator output signal enable a 4 MHz resonator to achieve the same internal clock speed as a more costly 8 MHz resonator in previous applications. This same circuitry can drive other devices where a separate resonator was required in the past. Another cost-savings feature is the fact that the l/0 ports are driven low at reset, avoiding the need for pull-up resistors.
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