at90ls8535-8mi ATMEL Corporation, at90ls8535-8mi Datasheet - Page 3

• Manufacturer Part Number: at90ls8535-8mi
• Description: 8-bit Microcontroller With 8k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

Description
Block Diagram
1041H–11/01
The AT90S8535 is a low-power CMOS 8-bit microcontroller based on the AVR RISC
architecture. By executing powerful instructions in a single clock cycle, the AT90S8535
achieves throughputs approaching 1 MIPS per MHz allowing the system designer to
optimize power consumption versus processing speed.
Figure 1. The AT90S8535 Block Diagram
AGND
AVCC
AREF
VCC
GND
PROGRAMMING
INSTRUCTION
INSTRUCTION
PROGRAM
PROGRAM
REGISTER
COUNTER
CONTROL
DECODER
FLASH
LOGIC
LINES
DATA REGISTER
DATA REGISTER
ANALOG MUX
PORTA
PORTB
PORTA DRIVERS
PORTB DRIVERS
PA0 - PA7
PB0 - PB7
REGISTERS
REGISTER
GENERAL
PURPOSE
POINTER
STATUS
STACK
SRAM
ALU
SPI
X
Y
Z
REG. PORTB
REG. PORTA
DATA DIR.
DATA DIR.
ADC
8-BIT DATA BUS
DATA REGISTER
DATA REGISTER
MCU CONTROL
OSCILLATOR
WATCHDOG
COUNTERS
INTERRUPT
REGISTER
INTERNAL
EEPROM
TIMER/
PORTC
PORTD
TIMER
UART
UNIT
PORTD DRIVERS
PORTC DRIVERS
PC0 - PC7
PD0 - PD7
AT90S/LS8535
REG. PORTC
REG. PORTD
DATA DIR.
DATA DIR.
OSCILLATOR
OSCILLATOR
TIMING AND
CONTROL
XTAL1
XTAL2
RESET
3