ATAR510

www.DataSheet4U.com Features Programmable System Clock with Prescaler and Five Different Clock Sources – 4-MHz Crystal Oscillator – 32-kHz Crystal Oscillator – RC-oscillator Fully Integrated – RC-oscillator with External Resistor Adjustment – External Clock Input Wide Supply-voltage Range (2.2 V to 6.2 V) Very Low Halt Current (< 1 µA) 4-Kbyte ROM, 256 × 4-bit RAM 8 Hard and Software Interrupt Priority Levels Up to 10 External and 4 Internal Interrupts, Bit Wise Maskable with Programmable Priority Level Up to 34 I/O Lines Including 8 High Drive I/O-lines (20 mA, VDD = 5 V) I/O Ports – Bit Wise Configurable with Combined Interrupt Handling (for Serial I/O Applications) 2 × 8-bit Multifunction Timer/Counters Coded Reset and Watchdog Timer (Mask Option) Power-on Reset and “Brown Out” Function Various Power-down Modes Efficient, Hardware-controlled Interrupt Handling High Level Programming Language qFORTH Comprehensive Library of Useful Routines Windows® 95/Windows NT® Based Development Tools MARC4 4-bit Universal Microcontroller ATAR510 Description The ATAR510 is a member of Atmel’s family of 4-bit single-chip microcontrollers. It contains ROM, RAM, up to 34 digital I/O pins, up to 10 maskable external interrupt sources, 4 maskable internal interrupts, a watchdog timer, interval timer, 2 x 8-bit multifunction timer/counter module, and a versatile software configurable on-chip system clock module. Rev. 4703B–4BMCU–01/05 Figure 0-1. Block Dia...