ATMEGA64A PDF

Gosida In addition the Power Debugger has two independent current sensing channels for measuring and optimizing the power consumption of A complete starter kit and development system amtega64a-au the 8-bit and bit AVR microcontrollers that gives designers a quick start to develop code on the AVR, with advanced features for prototyping and testing new designs. In Production View Datasheets. Application Notes Download All. In addition the Power Debugger has two independent current sensing channels for measuring and optimizing the power consumption of. ATmega64A — Complete Datasheet.

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This empowers system designer to optimize the device for power consumption versus processing speed. This is a summary document. A complete document is available on our Web site at www. Configuration Summary Ordering Information Block Diagram ATmega Compatibility Mode Pin Configurations Pin Descriptions Data Retention About Code Examples Capacitive Touch Sensing Packaging Information ATmega64A Rev. Description The AVR 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 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.

This allows very fast start-up combined with low power consumption. In Extended Standby mode, both the main Oscillator and the asynchronous timer continue to run. Software in the Boot Flash section will continue to run while the Application Flash section is updated, providing true Read-While-Write operation. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities.

Also Halide free and fully Green. Tape and Reel 4. Block Diagram Figure ? Also, the increased number of interrupt vectors might be a problem if the code uses absolute addresses.

To solve these problems, an ATmega compatibility mode can be selected by programming the fuse MC. Also, the Extended Interrupt vectors are removed. However, some new features in ATmega64A are not available in this compatibility mode, these features are listed below:?

Only the eight least significant bits of the Baud Rate Register is available. Two-wire serial interface is not supported. Port C is output only. Port F serves as digital input only in addition to analog input to the ADC. Boot Loader capabilities is not supported. It is not possible to adjust the frequency of the internal calibrated RC Oscillator. Timed sequence not required for Watchdog Time-out change. External Interrupt pins 3 - 0 serve as level interrupt only. Pin Configurations Figure ?

GND Ground. The Port A output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port A pins that are externally pulled low will source current if the pull-up resistors are activated. The Port A pins are tristated when a reset condition becomes active, even if the clock is not running. The Port B output buffers have symmetrical drive characteristics with both high sink and source capability.

As inputs, Port B pins that are externally pulled low will source current if the pull-up resistors are activated. The Port B pins are tristated when a reset condition becomes active, even if the clock is not running. The Port C output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port C pins that are externally pulled low will source current if the pull-up resistors are activated. The Port C pins are tristated when a reset condition becomes active, even if the clock is not running.

In ATmega compatibility mode, Port C is output only, and the port C pins are not tri-stated when a reset condition becomes active. The Port D output buffers have symmetrical drive characteristics with both high sink and source capability.

As inputs, Port D pins that are externally pulled low will source current if the pull-up resistors are activated. The Port D pins are tristated when a reset condition becomes active, even if the clock is not running. The Port E output buffers have symmetrical drive characteristics with both high sink and source capability.

As inputs, Port E pins that are externally pulled low will source current if the pull-up resistors are activated. The Port E pins are tristated when a reset condition becomes active, even if the clock is not running. Port pins can provide internal pull-up resistors selected for each bit. The Port F output buffers have symmetrical drive characteristics with both high sink and source capability.

As inputs, Port F pins that are externally pulled low will source current if the pull-up resistors are activated. The Port F pins are tri-stated when a reset condition becomes active, even if the clock is not running. The Port G output buffers have symmetrical drive characteristics with both high sink and source capability.

As inputs, Port G pins that are externally pulled low will source current if the pull-up resistors are activated. The Port G pins are tristated when a reset condition becomes active, even if the clock is not running. Port G also serves the functions of various special features. The port G pins are tri-stated when a reset condition becomes active, even if the clock is not running. PG3 and PG4 are oscillator pins. A low level on this pin for longer than the minimum pulse length will generate a reset, even if the clock is not running.

The minimum pulse length is given in System and Reset Characteristics. Shorter pulses are not guaranteed to generate a reset. PEN has no function during normal operation. About Code Examples This datasheet contains simple code examples that briefly show how to use various parts of the device.

These code examples assume that the part specific header file is included before compilation. Be aware that not all C compiler vendors include bit definitions in the header files and interrupt handling in C is compiler dependent. Please confirm with the C compiler documentation for more details.

Atmel AVR microcontrollers. For implementation details and other information, refer to the Atmel QTouch Library User Guide - also available for download from the Atmel website. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is 0. Dimensions D1 and E1 are maximum plastic body size dimensions including mold mismatch.

Lead coplanarity is 0. Errata The revision letter in this section refers to the revision of the ATmega64A device. Thus, the next 8 instructions after the change should be NOP instructions. To ensure this, follow this procedure: 3. Set the new pre-scaling factor in XDIV register. This will ensure that all subsequent instructions will execute correctly. The behavior follows errata number 3. Data to succeeding devices are replaced by all-ones during Update-DR. Other terms and product names may be trademarks of others.

No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and products descriptions at any time without notice.

Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life.

Safety-Critical Applications include, without limitation, life support devices and systems, equipment or systems for the operation of nuclear facilities and weapons systems. Atmel products are not designed nor intended for use in military or aerospace applications or environments unless specifically designated by Atmel as military-grade. Atmel products are not designed nor intended for use in automotive applications unless specifically designated by Atmel as automotive-grade.

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