S3P821A

S3C821A/P821A PRODUCT OVERVIEW 1 PRODUCT OVERVIEW S3C8-SERIES MICROCONTROLLES Samsung's S3C8 series of 8-bit single-chip CMOS microcontrollers offers a fast and efficient CPU, a wide range of integrated peripherals, and various mask-programmable ROM sizes. Among the major CPU features are: — Efficient register-oriented architecture — Selectable CPU clock sources — Idle and Stop power-down mode release by interrupt — Built-in basic timer with watchdog function A sophisticated interrupt structure recognizes up to eight interrupt levels. Each level can have one or more interrupt sources and vectors. Fast interrupt processing (within a minimum of six CPU clocks) can be assigned to specific interrupt levels. S3C821A/P821A MICROCONTROLLER The S3C821A/P821A single-chip CMOS microcontroller is fabricated using the highly advanced CMOS process, based on Samsung’s newest CPU architecture. The S3C821A is a microcontroller with a 48-Kbyte mask-programmable ROM embedded. The S3P821A is a microcontroller with a 48-Kbyte one-time-programmable ROM embedded. Using a proven modular design approach, Samsung engineers have successfully developed the S3C821A/P821A by integrating the following peripheral modules with the powerful SAM8 core: — Six programmable I/O ports, including five 8-bit ports and one 7-bit port, for a total of 47 pins. — Twelve bit-programmable pins for external interrupts. — One 8-bit basic timer for oscillation stabilization and watchdog functions (system reset). — One ...