Welcome to Futurlec. The ELECTRONIC COMPONENTS Superstore. To find the component your looking for, either search by Part Number or visit the relative department. Need Help. AT89C52 CONTROLLER BOARD AT89C52 Controller Board - V2 Great new AT89C52 Controller Board, includes a pre-installed AT89C52-24PC Atmel Microcontroller, running at 11.0592MHz. This board is ideal for embedded applications and general purpose controllers. Easy to connect and interface with existing equipment. Microcontroller can be programmed by a standard Atmel programmer, out of circuit. On-chip 8kbytes of Flash Program Memory and 256 Bytes of RAM. 82C55 IC included providing 24 I/O points wired to easy to connect headers. DS1232 Active reset and watchdog pre-installed for microcontroller monitoring. Board also includes sockets for a Real Time Clock, RS485 Communication and LCD connection. Two switch inputs and on-board speaker are pre-installed on the board. Board power supply is +5V dc, via a polarized power connector, visual power on indication via LED. Features • AT89C52-24PC Main Controller with 8kb of Flash Memory • 8255 I/O Port with 24 I/O bits • DS1232 Watchdog and Active Reset • RS232 Computer Connection (MAX232) • Real Time Clock (DS1307 option) • RS485 Communication (75176 option) • LCD Port • Speaker On-Board Order Now for USD$27.90