8-bit Microcontroller. AT90S4434 Datasheet

AT90S4434 Microcontroller. Datasheet pdf. Equivalent


Part AT90S4434
Description 8-bit Microcontroller
Feature Features • AVR® - High-performance and Low-power RISC Architecture – 118 Powerful Instructions - Mos.
Manufacture ATMEL
Datasheet
Download AT90S4434 Datasheet


Features • AVR® - High-performance and Low-power RISC Archit AT90S4434 Datasheet
Recommendation Recommendation Datasheet AT90S4434 Datasheet




AT90S4434
Features
AVR® - High-performance and Low-power RISC Architecture
– 118 Powerful Instructions - Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Up to 8 MIPS Throughput at 8 MHz
Data and Nonvolatile Program Memories
– 4K/8K Bytes of In-System Programmable Flash
SPI Serial Interface for In-System Programming
Endurance: 1,000 Write/Erase Cycles
– 256/512 Bytes EEPROM
Endurance: 100,000 Write/Erase Cycles
– 256/512 Bytes Internal SRAM
– Programming Lock for Software Security
Peripheral Features
– 8-channel, 10-bit ADC
– Programmable UART
– Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode
– One 16-bit Timer/Counter with Separate Prescaler, Compare and
Capture Modes, and dual 8-, 9-, or 10-bit PWM
– Programmable Watchdog Timer with On-chip Oscillator
– On-chip Analog Comparator
Special Microcontroller Features
– Power-on Reset Circuit
– Real Time Clock (RTC) with Separate Oscillator and Counter Mode
– External and Internal Interrupt Sources
– Three Sleep Modes: Idle, Power Save, and Power Down
Power Consumption at 4 MHz, 3V, 20°C
– Active: 6.4 mA
– Idle Mode: 1.9 mA
– Power Down Mode: <1 µA
I/O and Packages
– 32 Programmable I/O Lines
– 40-pin PDIP, 44-pin PLCC and 44-pin TQFP
Operating Voltages
– VCC: 4.0 - 6.0V AT90S4434/AT90S8535
– VCC: 2.7 - 6.0V AT90LS4434/AT90LS8535
Speed Grades:
– 0 - 8 MHz AT90S4434/AT90S8535
– 0 - 4 MHz AT90LS4434/AT90LS8535
Pin Configurations
8-bit
Microcontroller
with 4K/8K
Bytes In-System
Programmable
Flash
AT90S4434
AT90LS4434
AT90S8535
AT90LS8535
Preliminary
Rev. 1041E–04/99
1



AT90S4434
Description
The AT90S4434/8535 is a low-power CMOS 8-bit microcontroller based on the AVR RISC architecture. By executing pow-
erful instructions in a single clock cycle, the AT90S4434/8535 achieves throughputs approaching 1 MIPS per MHz allowing
the system designer to optimize power consumption versus processing speed.
Block Diagram
Figure 1. The AT90S4434/8535 Block Diagram
PA0 - PA7
VCC
PC0 - PC7
GND
AVCC
AGND
AREF
PORTA DRIVERS
PORTC DRIVERS
DATA REGISTER
PORTA
DATA DIR.
REG. PORTA
DATA REGISTER
PORTC
8-BIT DATA BUS
DATA DIR.
REG. PORTC
ANALOG MUX
ADC
PROGRAM
COUNTER
STACK
POINTER
INTERNAL
OSCILLATOR
WATCHDOG
TIMER
OSCILLATOR
OSCILLATOR
TIMING AND
CONTROL
XTAL1
XTAL2
RESET
PROGRAM
FLASH
SRAM
MCU CONTROL
REGISTER
INSTRUCTION
REGISTER
INSTRUCTION
DECODER
CONTROL
LINES
GENERAL
PURPOSE
REGISTERS
X
Y
Z
ALU
TIMER/
COUNTERS
INTERRUPT
UNIT
EEPROM
STATUS
REGISTER
PROGRAMMING
LOGIC
SPI
UART
DATA REGISTER
PORTB
DATA DIR.
REG. PORTB
PORTB DRIVERS
DATA REGISTER
PORTD
DATA DIR.
REG. PORTD
PORTD DRIVERS
PB0 - PB7
PD0 - PD7
2 AT90S/LS4434 and AT90S/LS8535







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