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GENERAL DESCRIPTION

INTRODUCTION

The ST92R195B microcontroller is developed and manufactured by STMicroelectronics using a proprietary n-well HCMOS process. Its performance derives from the use of a flexible 256-register programming model for ultra-fast context switching and real-time event response.

■ Register File based 8/16 bit Core Architecture with RUN, WFI, SLOW and HALT modes

■ 0°C to +70°C Operating Temperature Range available

■ Up to 24 MHz Operation @ 5V±10

■ Minimum instruction cycle time: 375ns at 16 MHz internal clock

■ 4 Mbytes address space

■ 256 Bytes RAM of Register file (accumulators or index registers)

■ 1024 Bytes of on-chip static RAM

■ 8K Bytes of TDSRAM (Teletext and Display Storage RAM)

■ 80-lead QFP package

■ 23 fully programmable I/O pins

■ Serial Peripheral Interface

■ Flexible Clock controller for OSD, Data Slicer and Core clocks running from one single low frequency external crystal.

■ Enhanced Display Controller with 26 rows of 40/80 characters

– Serial and Parallel attributes

– 10x10 dot Matrix, 512 ROM characters, definable by user

– 4/3 and 16/9 supported in 50/60Hz and 100/120 Hz mode

– Rounding, fringe, double width, double height, scrolling, cursor, full background color, halfintensity color, translucency and half-tone modes

■ Teletext unit, including Data slicer, Acquisition Unit and 8 Kbytes TDSRAM for Data Storage

■ VPS and Wide Screen Signalling slicer

■ Integrated Sync Extractor and Sync Controller

■ 14-bit Voltage Synthesis for tuning reference voltage

■ Up to 8 External Interrupts plus 1 non-maskable interrupt

■ 8 x 8-bit programmable PWM outputs with 5V open-drain or push-pull capability

■ 16-bit Watchdog timer with 8-bit prescaler

■ One 16-bit standard timer with 8-bit prescaler

■ 4-channel Analog-to-Digital converter; 5-bit guaranteed

■ Rich instruction set and 14-Addressing modes Versatile Development Tools, including ssembler, Linker, C-compiler, Archiver, Source Level Debugger and Hardware Emulators with RealTime Operating System available from third parties