*现货库存供应原装*ATMEL爱特梅尔内存单片机ATMEGA8A-AU

现货*供应原装*ATMEL单片机  全系列  ATMEGA,AT24C,ATTINY,AT89C,

ATMEGA8A-AU 可向我公司免费索取PDF规格书资料档案。

ATmega8A-AU - 8-bit with 8K Bytes In-System Programmable Flash - ATMEL Corporation

ATmega8A-AU - 8位具有8K字节的系统内可编程Flash - ATMEL公司

2. Overview
The ATmega8A is a low-power CMOS 8-bit microcontroller based on the *R RISC architecture.
By executing powerful instructions in a single clock cycle, the ATmega8A achieves
throughputs approaching 1 MIPS per MHz, allowing the system designer to optimize power consumption
versus processing speed.

The *R core combines a rich instruction set with 32 general 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 throughputs up to ten times faster than conventional
CISC microcontrollers.
The ATmega8A provides the following features: 8K bytes of In-System Programmable Flash
with Read-While-Write capabilities, 512 bytes of EEPROM, 1K byte of SRAM, 23 general purpose
I/O lines, 32 general purpose working registers, three flexible Timer/Counters with
compare modes, internal and external interrupts, a serial programmable USART, a byte oriented
Two-wire Serial Interface, a 6-channel ADC (eight channels in TQFP and QFN/MLF packages)
with 10-bit accuracy, a programmable Watchdog Timer with Internal Oscillator, an SPI serial
port, and five software selectable power saving modes. The Idle mode s*s 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 asynchronous
timer continues to run, allowing the user to maintain a timer base while the rest of the device is
sleeping. The ADC Noise Reduction mode s*s the CPU and all I/O modules except asynchronous
timer and ADC, to minimize switching noise during ADC conversions. In Standby mode,
the crystal/resonator Oscillator is running while the rest of the device is sleeping. This allows
very fast start-up combined with low-power consumption.
The device is manufactured using Atmel’s high density non-volatile memory technology. The
Flash Program memory can be reprogrammed In-System through an SPI serial interface, by a
conventional non-volatile memory programmer, or by an On-chip boot program running on the
*R core. The boot program can use any interface to download the application program in the
Application Flash memory. Software in the Boot Flash Section will continue to run while the
Application Flash Section is updated, providing true Read-While-Write operation. By combining
an 8-bit RISC CPU with In-System Self-Programmable Flash on a monolithic chip, the Atmel
ATmega8A is a powerful microcontroller that provides a highly-flexible and cost-effective solution
to many embedded control applications.
The ATmega8A *R is supported with a full suite of program and system development tools,
including C compilers, macro *emblers, program de*/simulators, In-Circuit Emulators,
and evaluation kits.

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TOSHIBA光耦系列：TLP521 TLP621 TLP627 TLP250 TLP550 TLP181 TLP121 TLP127 TLP 113 TLP785 TLP781 TLP185 TLP421

FAIRCHILD光耦系列:MOC3021 MOC3041 MOC3063 MOC3083 MOC8050 4N25 4N35 6N137<安华高》6N136

NEC光耦系列：PS2501 PS2505 CNY17 SHARP光耦系列：PC817 PC929 PC942

NXP单片机集成电路系列：LPC2000   LPC1700   LPC1300  LPC1100  LPC900  LPC700 ，74HC系列

ATMEL单片集成电路系列：ATMEGA8A,16A,32A,64A系列 AT89C51/52/55WD,AT89C2051，AT89*051，ATTINY13/2313，

                                    ATMEGA48/88系列，AT24C02/04/08/16/32/64/128/256/512/1024

MICROCHIP单片集成电路系列：PIC16F,PIC12F，PIC16C,PIC18F,

ON电源集成电路：UC38系列，NCP，MUR,*R,MC78XX*,MC78XXBT,MC79XX*

等等。详细请询问本公司。