ATMEGA64A-MNR Atmel, ATMEGA64A-MNR Datasheet - Page 300

• Manufacturer Part Number: ATMEGA64A-MNR
• Description: IC MCU AVR 64K FLASH 8QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA64A-MNR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, 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): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: SPI, UART, I2C
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 53
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Operating Temperature Range: - 40 C to + 85 C
• Processor To Be Evaluated: ATMEGA64A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

27.6
27.6.1
8160C–AVR–07/09
Parallel Programming
Enter Programming Mode
Table 27-8.
Table 27-9.
Table 27-10. No. of Words in a Page and no. of Pages in the Flash
Table 27-11. No. of Words in a Page and no. of Pages in the EEPROM
The following algorithm puts the device in Parallel Programming mode:
1. Apply 4.5 - 5.5V between V
2. Set RESET to “0” and toggle XTAL1 at least six times.
3. Set the Prog_enable pins listed in
4. Apply 11.5 - 12.5V to RESET. Any activity on Prog_enable pins within 100 ns after +12V
Note, if External Crystal or External RC configuration is selected, it may not be possible to apply
qualified XTAL1 pulses. In such cases, the following algorithm should be followed:
32K words (64K bytes)
XA1
0
0
1
1
EEPROM Size
ns.
has been applied to RESET, will cause the device to fail entering Programming mode.
2K bytes
Command Byte
Flash Size
XA0
1000 0000
0100 0000
0010 0000
0001 0000
0001 0001
0000 1000
0000 0100
0000 0010
0000 0011
0
1
0
1
XA1 and XA0 Coding
Command Byte Bit Coding
Action when XTAL1 is Pulsed
Load Flash or EEPROM Address (High or low address byte determined by BS1)
Load Data (High or Low data byte for Flash determined by BS1)
Load Command
No Action, Idle
Page Size
8 bytes
Page Size
128 words
Command Executed
Chip Erase
Write Fuse Bits
Write Lock Bits
Write Flash
Write EEPROM
Read Signature Bytes and Calibration byte
Read Fuse and Lock Bits
Read Flash
Read EEPROM
CC
and GND, and wait at least 100 µs.
PCWORD
EEA[2:0]
Table 27-7 on page 299
PCWORD
PC[6:0]
No. of Pages
256
No. of Pages
256
to “0000” and wait at least 100
EEA[10:3]
PCPAGE
ATmega64A
PCPAGE
PC[14:7]
EEAMSB
PCMSB
10
14
300