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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AVR082 Replacing ATmega161 by ATmega162

San Jose, CA Refer to data sheet for details. Scottish Enterprise Technology Park. The typical frequency of the Watchdog Oscillator in ATmega is close to 1. Use external Brown-out Detector and do not enable internal Brown-out Detector.

At certain frequencies and voltages, the store program memory SPM instruction may fail. The timing requirements for Parallel Programming have been changed. Refer to the ATmega data sheet for details on the changed timing. Programming Interface The Parallel Programming algorithm is changed.

No licenses to patents or other intellectual property of Atmel are granted. The program counter will be updated with a wrong value.

The following features are not supported when the ATmega is used in the ATmega compatibility mode: The ATmega has a signature byte different from the one used in ATmega Other terms and product names may be the trademarks of others Printed on recycled paper. Changes to Names The following control bits have changed names, but have the same functionality and placement when accessed as in ATmega Route des Arsenaux FAX 1 When the compatibility mode is used, only non-conflicting enhancements make the part different from the ATmega 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.


Pointer addresses external memory. Colorado Springs, CO The calibrated RC Oscillator is assumed to be calibrated to 1. In this device, some instructions are not interruptable, and will cause the interrupt.

Atme l Headquarte rs. Printed on recycled paper.

ATMEGAPC Datasheet PDF –

Other terms and product names may be the atmegz161 of others. This means 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 Table 4 shows the ATmega compatible fuse settings. The Company assumes no responsibility for any errors. This gives a phase error in the following.

In C, the only construct that will. The loop may consist of a branch.

Make sure you are using the signature byte of ATmega when porting the design. Check the data sheet for detailed information. Still the following must be kept in mind when the MC Fuse is programmed: A dash indicates that the fuse is not present in ATmega The following bits have changed locations, but have the same functionality when accessed as in ATmega Refer to the data sheet for ATmega for further information.


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Therefore the status bits must always be read before the UDR Register is read. When the internal Brown-out Detector is enabled, the device may hang in Reset. See the ATmega datashfet sheet for details.

Atm el O pe ra tions. Avoid using the SPM instruction. The interpretation of this point of time differs between ATmega and ATmega TEL 1 This is in both devices regardless of the clock source and frequency of the system clock. Otherwise, the error status will be lost. Increased Interrupt Latency In ATmega, all instructions are interruptable, and no dead-lock situation exists if a loop is followed by a two-word instruction for the purpose of looping until an interrupt goes active.

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. Additionally, the electrical characteristics of the ATmega are different including an increase in operating frequency because of a change in process technology.

It is called AS0 elsewhere in that data sheet, as well as everywhere in ATmega