ATMEGA649P-MUR Atmel, ATMEGA649P-MUR Datasheet - Page 35
![AVR, 64KB FLASH, 2KB EE, 4KB SRA](/photos/12/13/121326/313-64-qfn_sml.jpg)
ATMEGA649P-MUR
Manufacturer Part Number
ATMEGA649P-MUR
Description
AVR, 64KB FLASH, 2KB EE, 4KB SRA
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA649P-MUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
64KB (32K x 16)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
10.9
10.10 ATmega649A/649PA/ATmega6490A/6490P
8284AS–AVR–10/10
ATmega3290A/3290PA rev. C
•
1. Interrupts may be lost when writing the timer registers in the asynchronous timer
No known errata.
Interrupts may be lost when writing the timer registers in the asynchronous timer
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P
The interrupt will be lost if a timer register that is synchronous timer clock is written when the
asynchronous Timer/Counter register (TCNTx) is 0x00.
Problem Fix/ Workaround
Always check that the asynchronous Timer/Counter register neither have the value 0xFF nor
0x00 before writing to the asynchronous Timer Control Register (TCCRx), asynchronous
Timer Counter Register (TCNTx), or asynchronous Output Compare Register (OCRx).
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