AT90LS4433-4PI Atmel, AT90LS4433-4PI Datasheet - Page 123

• Manufacturer Part Number: AT90LS4433-4PI
• Description: IC MCU 4K FLSH 4MHZ A/D LV 28DIP
• Manufacturer: Atmel
• Series: AVR® 90LSr

Specifications of AT90LS4433-4PI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 20
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 6 V
• Data Converters: A/D 6x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table of Contents
1042H–AVR–04/03
Features................................................................................................. 1
Pin Configurations................................................................................ 2
Description ............................................................................................ 3
Architectural Overview......................................................................... 7
Timer/Counters ................................................................................... 33
16-bit Timer/Counter1......................................................................... 35
Watchdog Timer.................................................................................. 43
EEPROM Read/Write Access............................................................. 45
Serial Peripheral Interface – SPI........................................................ 48
UART.................................................................................................... 53
Analog Comparator ............................................................................ 62
Block Diagram ...................................................................................................... 4
Pin Descriptions.................................................................................................... 5
Clock Options ....................................................................................................... 6
General Purpose Register File ........................................................................... 10
ALU – Arithmetic Logic Unit................................................................................ 11
In-System Programmable Flash Program Memory ............................................ 11
SRAM Data Memory........................................................................................... 11
Program and Data Addressing Modes................................................................ 12
EEPROM Data Memory...................................................................................... 16
Memory Access Times and Instruction Execution Timing .................................. 16
I/O Memory ......................................................................................................... 17
Reset and Interrupt Handling.............................................................................. 20
Sleep Modes....................................................................................................... 31
Timer/Counter Prescaler..................................................................................... 33
8-bit Timer/Counter0........................................................................................... 33
Prevent EEPROM Corruption ............................................................................. 47
SS Pin Functionality............................................................................................ 49
Data Modes ........................................................................................................ 50
Data Transmission.............................................................................................. 53
Data Reception ................................................................................................... 54
UART Control ..................................................................................................... 57
AT90S/LS4433
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