ATMEGA649V-8AI Atmel, ATMEGA649V-8AI Datasheet - Page 297

• Manufacturer Part Number: ATMEGA649V-8AI
• Description: IC AVR MCU FLASH 64K 1.8V 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA649V-8AI

• 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: 53
• 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-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

2552K–AVR–04/11
Figure 27-1. Parallel Programming
Table 27-6.
Table 27-7.
Programming Mode
Signal Name in
RDY/BSY
PAGEL
DATA
BS1
XA0
XA1
BS2
WR
OE
PAGEL
XA1
XA0
BS1
Pin
Pin Name Mapping
Pin Values Used to Enter Programming Mode
Pin Name
RDY/BSY
PB7-0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PA0
PAGEL
+12 V
BS2
BS1
XA0
XA1
WR
OE
I/O
I/O
O
I
I
I
I
I
I
I
Prog_enable[3]
Prog_enable[2]
Prog_enable[1]
Prog_enable[0]
PD1
PD2
PD3
PD4
PD5
PD6
PD7
RESET
XTAL1
GND
Symbol
PA0
Function
0: Device is busy programming, 1: Device is ready
for new command.
Output Enable (Active low).
Write Pulse (Active low).
Byte Select 1 (“0” selects low byte, “1” selects high
byte).
XTAL Action Bit 0
XTAL Action Bit 1
Program Memory and EEPROM data Page Load.
Byte Select 2 (“0” selects low byte, “1” selects 2’nd
high byte).
Bi-directional Data bus (Output when OE is low).
ATmega329/3290/649/6490
PB7 - PB0
AVCC
VCC
+5V
+5V
DATA
Value
0
0
0
0
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