CHMOS 16-BIT MICROCONTROLLER

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 I/O port (8096 compatible) with a
dedicated 16-bit baud-rate generator; an additional synchronous serial I/O port with full duplexaster/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 I/O 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).

■20 MHz operation
■24 Kbytes of on-chip OTPROM
■768 bytes of on-chip register RAM
■Register-to-register architecture
■Peripheral transaction server (PTS) with high-speed, microcoded interrupt service routines
■Six-channel/10-bit A/D with sample and hold
■High-speed event processor array
— Six capture/compare channels
— Two compare-only channels
— Two 16-bit software timers
†16 MHz standard; 20 MHz is speed premium
■Full-duplex serial I/O port with dedicated baud-rate generator
■Enhanced full-duplex, synchronous serial I/O port (SSIO)
■Programmable 8- or 16-bit external bus
■Optional clock doubler with programmable clock output signal
■SFR register that indicates the source of the last reset
■Design enhancements for EMI reduction
■Oscillator failure detection circuitry
■Watchdog timer (WDT)
■–40° C to +125° C ambient temperature
■52-pin PLCC package