ATMEGA Datasheet PDF Download – 8-bit Microcontroller, ATMEGA data sheet. Typical values contained in this datasheet are based on simulations and characterization . The ATmega is % pin compatible with ATmega, and can. ATMEGA 8-bit Microcontroller With 16k Bytes In-system Programmable Flash Features. High-performance, Low-power AVR® 8-bit Microcontroller Advanced.

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The following features have been added: See description in ATmega data sheet for further information.

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When the internal Brown-out Detector is enabled, the device may hang in Reset. In C, the only construct that will. This atmega116 that the selection of Time-out period for the Watchdog Timer in terms of number of WDT Oscillator cycles must be reconsidered when porting the design to ATmega It is called AS0 elsewhere in that data sheet, as well as everywhere in ATmega Refer to data sheet for details.

The following features are not supported when the ATmega is used in the ATmega compatibility mode: Refer to the data sheet for ATmega for further information. In assembly, insert a nop instruction immediately after a loop to itself. The ATmega has two operating modes selected through the fuse settings.

Other terms and product names may be the trademarks of others. The loop may consist of a branch. The only practical problem concerns a loop followed by a two. The following bits have changed locations, but have the same functionality when accessed as in ATmega In this case, a dead-lock situation arises. When the MC Fuse armega161 unprogrammed, all new features are supported, but porting the code may require more work.


Refer to the ATmega data sheet for details on the changed timing. Atm el O pe ra tions. In this device, some instructions are not interruptable, and will cause the interrupt.

This means that the following six Interrupt Vectors disappears, and vectors from number 11 to 28 moved up to become vectors number 5 to Pointer addresses external memory. This is in both devices regardless of the atmeba161 source and frequency atmeta161 the system clock. The interpretation of this point of time differs between ATmega and ATmega Other terms and product names may be the trademarks of others Printed on atmeega161 paper. Atmel Corp oration The timing requirements for Parallel Programming have been changed.

ATMEGAPC Datasheet PDF –

Use external Brown-out Detector and do not enable internal Brown-out Detector. Make sure you are using the signature byte of ATmega when porting the design. Atmel Cor poration makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty.

The frequency of the Watchdog Oscillator in ATmega is close to 1.

Note that since the crystal oscillator in ATmega does not have a rail-to-rail amplitude, it is not possible to clock other units directly from the XTAL2 pin. Atmel’s products are not authorized for use as critical. Route des Arsenaux Still the following must be kept in mind when the MC Fuse is programmed: The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein.


Table 4 shows the ATmega compatible fuse settings. Make sure this issue is not harmful to the application. Some datasueet the fuses are described further in the following sections. Changes to Names The following control bits have changed names, but have the same functionality and placement when accessed as in Ddatasheet This gives a phase error in the following.

The program counter will be updated with a wrong value. The calibrated RC Oscillator is assumed to be calibrated to 1. If these status bits were cleared by writing 0xFF to the register in ATmega, this may trigger incorrect behavior when ported to ATmega, since the new control bits will be set. Additionally, the electrical characteristics of the ATmega are different including an increase in operating frequency because of a change in process technology.

TOP does not change the OCx output.

Dataeheet l Headquarte rs. Scottish Enterprise Technology Park. No licenses to patents or other intellectual property of Atmel are granted. As stated in the data sheet for ATmega, the user should write unused bits to zero if they are accessed for compatibility to future devices. FAX 1 The typical frequency of the Watchdog Oscillator in ATmega is close to 1.

AVR 8-Bit RISC – Data Sheets

No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Check the data sheet for detailed information. TEL 1

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