Atmel

AT90S8535 - 8 bit AVR Microcontroller with 8k Bytes In-System Programmable Flash

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Features Utilizes the AVR RISC Architecture AVR - High-performance and Low-power RISC Architecture - 118 Instructions - Most Single Clock Cycle Execution - 32 x 8 General-purpose Working Registers + Peripheral Control Registers - Up to 8 MIPS Throughput at 8MHz Data and Nonvolatile Program Memory - 8k Bytes of In-System Programmable Flash - 512 Bytes Internal SRAM - 512 Bytes of In-System Programmable EEPROM - Programmable Lock for Flash Program and EEPROM Data Security Peripheral Features - Two 8-bit Timer/Counter with Separate Prescalar, Compare - One 16-bit Timer/Counter System with Separate Prescalar, Compare and Dual 8,9, or 10-bit PWM - Real Time Clock with Separate Oscillator and Counter Mode - 8-channel, 10-bit ADC - Programmable Serial UART - Master/Slave SPI Serial Interface - Programmable Watchdog Timer with Separate On-Chip Oscillator - Analog Comparator Special Microcontroller Features - Power-on Reset Circuit - Low-power Idle, Power-save and Power-down Modes - External and Internal Interrupt Sources Specifications - Low-power, High-speed CMOS Process Technology - Full Static Operation Power Consumption at 4MHz, 3V 25o C - Active: 6.4mA - Idle Mode: 1.9mA - Power-down Mode: <1µA I/O and Packages - 32 Programmable I/O Lines, 8 Output Lines, 8 Input Lines - 40-pin DIP

Pin Description Pin Number Description 1 - 8 PB0 - PB7 - Port B 9 RESET - Reset (Active Low) 10 Vcc - Power Supply 11 GND - Ground 12 XTAL2 - Crystal 13 XTAL1 - Crystal 14 - 21 PD0 - PD7 - Port D 22 - 29 PC0 - PC7 - Port C 30 AVCC - Analog Circuits Power Supply 31 AGND - Analog Ground 32 AREF - Analog Reference 33 - 40 PA7 - PA0 - Port A

Pin Layout Dimensional Drawing

Technical Data Data Sheet Atmel - Data Sheet for AT90S8535 Application Notes Atmel - AVR Application Notes