at90ls4433 ATMEL Corporation, at90ls4433 Datasheet - Page 4

• Manufacturer Part Number: at90ls4433
• Description: At90s4433 8-bit Avr Microcontroller With 4k Bytes Of In-system Programmable Flash
• Manufacturer: ATMEL Corporation

Block Diagram
4
AT90S/LS4433
Figure 1. The AT90S4433 Block Diagram
AGND
AVCC
AREF
VCC
GND
PROGRAMMING
INSTRUCTION
INSTRUCTION
PROGRAM
PROGRAM
REGISTER
COUNTER
CONTROL
DECODER
FLASH
LOGIC
LINES
DATA REGISTER
ANALOG MUX
PORTB
PORTB DRIVERS
PB0 - PB5
REGISTERS
REGISTER
GENERAL
PURPOSE
POINTER
STATUS
STACK
SRAM
DATA REGISTER
ALU
SPI
X
Y
Z
REG. PORTB
DATA DIR.
PORTC
ADC
PORTC DRIVERS
8-BIT DATA BUS
PC0 - PC5
REG. PORTC
DATA DIR.
DATA REGISTER
MCU CONTROL
OSCILLATOR
WATCHDOG
COUNTERS
INTERRUPT
INTERNAL
REGISTER
EEPROM
TIMER/
PORTD
TIMER
UART
UNIT
PORTD DRIVERS
PD0 - PD7
REG. PORTD
DATA DIR.
OSCILLATOR
TIMING AND
CONTROL
1042H–AVR–04/03
XTAL1
XTAL2
RESET