ATMEGA325-16MI Atmel, ATMEGA325-16MI Datasheet - Page 283

• Manufacturer Part Number: ATMEGA325-16MI
• Description: IC AVR MCU 32K 16MHZ 64-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA325-16MI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, 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): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-MLF®, 64-QFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 26-15. Serial Programming Instruction Set
2570M–AVR–04/11
Instruction/Operation
Read Lock bits
Read Signature Byte
Read Fuse bits
Read Fuse High bits
Read Extended Fuse Bits
Read Calibration Byte
Write Instructions
Write Program Memory Page
Write EEPROM Memory
Write EEPROM Memory Page (page access)
Write Lock bits
Write Fuse bits
Write Fuse High bits
Write Extended Fuse Bits
Notes:
If the LSB in RDY/BSY data byte out is ‘1’, a programming operation is still pending. Wait until
this bit returns ‘0’ before the next instruction is carried out.
Within the same page, the low data byte must be loaded prior to the high data byte.
After data is loaded to the page buffer, program the EEPROM page, see
1. Not all instructions are applicable for all parts
2. a = address
3. Bits are programmed ‘0’, unprogrammed ‘1’.
4. To ensure future compatibility, unused Fuses and Lock bits should be unprogrammed (‘1’) .
5. Refer to the correspondig section for Fuse and Lock bits, Calibration and Signature bytes and
6. See htt://www.atmel.com/avr for Application Notes regarding programming and programmers.
Page size.
Byte 1
$AC
$AC
$AC
$AC
$4C
$C0
$C2
$58
$30
$50
$58
$50
$38
0000 00aa
0000 0aaa
0000 00aa
0000 0aaa
adr MSB
Byte 2
$E0
$A0
$A8
$A4
ATmega325/3250/645/6450
$00
$00
$00
$08
$08
$00
/
/
Instruction Format
0000 000aa
aaaa aaaa
aaaa aa00
aaaa a000
adr LSB
Byte 3
$00
$00
$00
$00
$00
$00
$00
$00
$00
/
Figure
26-12.
data byte out
data byte out
data byte out
data byte out
data byte out
data byte out
data byte in
data byte in
data byte in
data byte in
data byte in
Byte4
$00
$00
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