ATAR510 Datasheet | Atmel

Features - Programmable System Clock with Prescaler and Five Different Clock Sources - 4-MHz Crystal Oscillator - 32-k Hz 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 m A, VDD = 5 V) I/O Ports - Bit Wise Configurable with bined 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 q FORTH prehensive 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 Diagram TE SCLIN OSCIN OSCOUT AVDD VSS NRST VDD TIM1 Test Sleep System clock Real time clock Master reset 4K x 8 bit 256 x 4 bit Timer/ counter Watchdog Prescaler Timer 1 Timer 0 Melody & buzzer MARC4 4-bit CPU core I/O bus I/O I/O 4 4 I/O I/O 4 4 I/O Interrupt &...