IN90LS2333DW

`High-performance and Low-power AVR <sup>®</sup>8-bit RISC Architecture
   -118 Powerful Instructions - Most Single Cycle Execution
   -32 x 8 General Purpose Working Registers
   -Up to 8 MIPS Throughput at 8 MHz
`Data and Nonvolatile Program Memory
   -2K/4K Bytes of In-System Programmable Flash Endurance 1,000 Write/Eras
   -128 Bytes of SRAM
   -128/256 Bytes of In-System Programmable EEPROM Endurance: 100,000 Wr
   -Programming Lock for Flash Program and EEPROM Data Security
`Peripheral Features 
   -One 8-bit Timer/Counter with Separate Prescaler 
   -Expanded 16-bit Timer/Counter with Separate Prescaler, Compare, Capture 
   10-bit PWM
   -On-chip Analog Comparator
   -Programmable Watchdog Timer with Separate On-chip Oscillator
   -Programmable UART
   -6-channel, 10-bit ADC
   -Master/Slave SPI Serial Interface
`Special Microcontroller Features
   -Brown-Out Reset Circuit
   -Enhanced Power-on Reset Circuit
   -Low-Power Idle and Power Down Modes
   -External and Internal Interrupt Sources
`Specifications
   -Low-power, High-speed CMOS Process Technology
   -Fully Static Operation
`Power Consumption at 4 MHz, 3V, 25 
   -Active: 3.4 mA
   -Idle Mode: 1.4 mA
   -Power Down Mode: <1A
`I/O and Packages
   -20 Programmable I/O Lines
   -28-pin PDIP and 32-pin TQFP
`Operating Voltage
   -2.7V - 6.0V (IN90LS2333)
   -4.0V - 6.0V (IN90S2333 )
`Speed Grades
   -C 0 - 4 MHz (IN90LS2333 )  
   0 - 8 MHz (IN90S2333 )
 

The IN90S2333 is a low-power CMOS 8-bit microcontroller based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the IN90S2333 achieves throughputs approaching 1 MIPS per MHz allowing esystem designer to optimize power consumption versus processing speed.

The AVR core of IN90S2333 combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one ingleinstruction executed inone clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten imes faster than conventional CISC microcontrollers.

The AT90S2333/4433 provides the following features: 2K/4K bytes of In-ystemProgrammableFlash,128/256bytesPROM, 128 bytes SRAM, 20 general purpose I/O lines, 32 general purpose working registers, two flexible imer/counters with comparemodes, internal and external interrupts, a programmable serial UART, 6-channel, 10-C,programmableWatchdog Timer with internal oscillator, an SPI serial port and twosoftware selectable power saving modes. The Idle mode stops the CPU while allowing the SRAM, timer/counters, SPI port and interrupt system to continue functioning. The Power own mode saves the register contents but freezes the oscillator, disabling all other chip functions until the next interrupt or hardware reset.

The IN90S2333 is manufactured using Atmel!s high density nonvolatile memorytechnology. The on-chip Flash program memory can be reprogrammed in-system through an SPI serial interface or by a conventional nonvolatile memory programmer. By combining a RISC 8-bit CPU with In-System Programmable Flash on a monolithic chip, the Atmel AT90S2333/4433 is a powerful microcontroller that provides a highly flexible and cost effective solution to many embedded control applications. The AT90S2333/4433 AVR is supported with a full suite of program and system development tools including: C compilers, macro assemblers, program debugger/simulators, in-circuit emulators, and evaluation kits.