S3C821A Overview
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.
S3C821A Key Features
- 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.
- 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 8-bit timer/counter and one 16-bit timer/counter with selectable operating modes
- Watch timer for real time
- 4-input A/D converter