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