ATMEGA329V-8AU Atmel, ATMEGA329V-8AU Datasheet - Page 284

• Manufacturer Part Number: ATMEGA329V-8AU
• Description: IC AVR MCU 32K 8MHZ 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA329V-8AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K 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-TQFP, 64-VQFP
• A/d Inputs: 8-Channel, 10-Bit
• Cpu Speed: 8 MIPS
• Eeprom Memory: 1K Bytes
• Input Output: 54
• Interface: SPI/UART/USART/USI
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 100-pin TQFP
• Programmable Memory: 32K Bytes
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2.7-5.5 V
• Processor Series: ATMEGA32x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: SPI, USART, USI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 54
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Package: 64TQFP
• Device Core: AVR
• Family Name: ATmega
• Maximum Speed: 8 MHz
• For Use With: ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Latching of Fuses
Signature Bytes
Calibration Byte
Parallel Programming
Parameters, Pin
Mapping, and
Commands
Signal Names
284
ATmega329/3290/649/6490
The status of the Fuse bits is not affected by Chip Erase. Note that the Fuse bits are
locked if Lock bit1 (LB1) is programmed. Program the Fuse bits before programming the
Lock bits.
The fuse values are latched when the device enters programming mode and changes of
the fuse values will have no effect until the part leaves Programming mode. This does
not apply to the EESAVE Fuse which will take effect once it is programmed. The fuses
are also latched on Power-up in Normal mode.
All Atmel microcontrollers have a three-byte signature code which identifies the device.
This code can be read in both serial and parallel mode, also when the device is locked.
The three bytes reside in a separate address space.
For the ATmega329/3290/649/6490 the signature bytes are:
1. 0x000: 0x1E (indicates manufactured by Atmel).
2. 0x001: 0x95/0x96 (indicates Flash memory,refer to “Part Number” on page 243).
3. 0x002: 0x03/0x04 (indicates device, refer to “Part Number” on page 243).
The ATmega329/3290/649/6490 has a byte calibration value for the internal RC Oscilla-
tor. This byte resides in the high byte of address 0x000 in the signature address space.
During reset, this byte is automatically written into the OSCCAL Register to ensure cor-
rect frequency of the calibrated RC Oscillator.
This section describes how to parallel program and verify Flash Program memory,
E E P R O M D a t a m e m o r y , M e m o r y L o c k b i t s , a n d F u s e b i t s i n t h e
ATmega329/3290/649/6490. Pulses are assumed to be at least 250ns unless otherwise
noted.
In this section, some pins of the ATmega329/3290/649/6490 are referenced by signal
names describing their functionality during parallel programming, see Figure 120 and
Table 128. Pins not described in the following table are referenced by pin names.
The XA1/XA0 pins determine the action executed when the XTAL1 pin is given a posi-
tive pulse. The bit coding is shown in Table 130.
When pulsing WR or OE, the command loaded determines the action executed. The dif-
ferent Commands are shown in Table 131.
2552H–AVR–11/06