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Atmel Electronic Components Datasheet

90S8535 Datasheet

8-Bit Microcontroller with 4K/8K Bytes In-System Programmable Flash

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90S8535 pdf
Features
Utilizes the AVR ® Enhanced RISC Architecture
AVR - High Performance and Low Power RISC Architecture
118 Powerful Instructions - Most Single Clock Cycle Execution
8K bytes of In-System Programmable Flash AT90S/LS8535
4K bytes of In-System Programmable Flash AT90S/LS4434
– SPI Serial Interface for In-System Programming
– Endurance: 1,000 Write/Erase Cycles
512 bytes EEPROM AT90S/LS8535
256 bytes EEPROM AT90S/LS4434
– Endurance: 100,000 Write/Erase Cycles
512 bytes Internal SRAM AT90S/LS8535
256 bytes Internal SRAM AT90S/LS4434
8-Channel, 10-Bit ADC
32 x 8 General Purpose Working Registers
32 Programmable I/O Lines
Programmable Serial UART
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
Power-On Reset Circuit
Up to 8 MIPS Throughput at 8 MHz
RTC with Separate Oscillator and Counter Mode
Two 8-Bit Timer/Counters with Separate Prescaler and Compare Mode
One 16-Bit Timer/Counter with Separate Prescaler and Compare and Capture Modes
3 PWM channels
External and Internal Interrupt Sources
Programmable Watchdog Timer with On-Chip Oscillator
On-Chip Analog Comparator
Three Sleep Modes: Idle, Power Save, and Power Down
Programming Lock for Software Security
Description
The AT90S4434/8535 is a low-power CMOS 8-bit microcontroller based on the AVR®
enhanced RISC architecture. By executing powerful 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.
(continued)
Pin Configurations
8-Bit
Microcontroller
with 4K/8K
Bytes In-System
Programmable
Flash
AT90S4434
AT90LS4434
AT90S8535
AT90LS8535
Advance
Information
Rev. 1041AS–05/98
Note: This is a summary document. For the complete 80 page
document, please visit our website at www.atmel.com
literature@atmel.com and request literature #1041A.
or
e-mail
a1t


Atmel Electronic Components Datasheet

90S8535 Datasheet

8-Bit Microcontroller with 4K/8K Bytes In-System Programmable Flash

No Preview Available !

90S8535 pdf
Block Diagram
VCC
GND
AVCC
AGND
AREF
PA0 - PA7
PC0 - PC7
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
PROGRAM
FLASH
INSTRUCTION
REGISTER
INSTRUCTION
DECODER
CONTROL
LINES
PROGRAMMING
LOGIC
STACK
POINTER
SRAM
GENERAL
PURPOSE
REGISTERS
X
Y
Z
ALU
STATUS
REGISTER
SPI
INTERNAL
OSCILLATOR
WATCHDOG
TIMER
MCU CONTROL
REGISTER
TIMER/
COUNTERS
INTERRUPT
UNIT
EEPROM
OSCILLATOR
OSCILLATOR
TIMING AND
CONTROL
UART
XTAL1
XTAL2
RESET
DATA REGISTER
PORTB
DATA DIR.
REG. PORTB
PORTB DRIVERS
DATA REGISTER
PORTD
DATA DIR.
REG. PORTD
PORTD DRIVERS
PB0 - PB7
The AVR core combines a rich instruction set with 32 gen-
eral 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
single instruction executed in one clock cycle. The resulting
architecture is more code efficient while achieving through-
puts up to ten times faster than conventional CISC micro-
controllers.
The AT90S4434/8535 provides the following features:
4K/8K bytes of In-System Programmable Flash, 256/512
bytes EEPROM, 256/512 bytes SRAM, 32 general purpose
I/O lines, 32 general purpose working registers, RTC, three
flexible timer/counters with compare modes, internal and
PD0 - PD7
external interrupts, a programmable serial UART, 8-chan-
nel, 10-bit ADC, programmable Watchdog Timer with inter-
nal oscillator, an SPI serial port and three software
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
Down mode saves the register contents but freezes the
oscillator, disabling all other chip functions until the next
interrupt or hardware reset. In Power Save mode, the timer
oscillator continues to run, allowing the user to maintain a
timer base while the rest of the device is sleeping.
The device is manufactured using Atmel’s high density
non-volatile memory technology. The on-chip ISP Flash
2 AT90S/LS4434 and AT90S/LS8535


Part Number 90S8535
Description 8-Bit Microcontroller with 4K/8K Bytes In-System Programmable Flash
Maker ATMEL Corporation
Total Page 10 Pages
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