ATMEGA329P-20MN Atmel, ATMEGA329P-20MN Datasheet - Page 314

• Manufacturer Part Number: ATMEGA329P-20MN
• Description: IC MCU AVR 32K 20MHZ 64QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA329P-20MN

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• 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): 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: Lead free / RoHS Compliant

27.7.18
Table 27-18. Serial Programming Instruction Set
8021G–AVR–03/11
Instruction/Operation
Programming Enable
Chip Erase (Program Memory/EEPROM)
Poll RDY/BSY
Load Instructions
Load Extended Address byte
Load Program Memory Page, High byte
Load Program Memory Page, Low byte
Load EEPROM Memory Page (page access)
Read Instructions
Read Program Memory, High byte
Read Program Memory, Low byte
Read EEPROM Memory
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
Serial Programming Instruction set
(6)
Figure 27-11. Serial Programming Waveforms
Table 27-18
(1)
SERIAL DATA OUTPUT
SERIAL CLOCK INPUT
SERIAL DATA INPUT
and
SAMPLE
Figure 27-12 on page 316
(MOSI)
(MISO)
(SCK)
Byte 1
$AC
$AC
$4D
$C1
$A0
$4C
$F0
$48
$40
$28
$20
$58
$30
$50
$58
$50
$38
MSB
MSB
0000 00aa
0000 0aaa
adr MSB
adr MSB
adr MSB
Byte 2
describes the Instruction set.
$53
$80
$00
$00
$00
$00
$00
$00
$00
$00
$08
$08
$00
/
Instruction Format
ATmega329P/3290P
Extended adr
0000 000aa
0000 00aa
0000 0aaa
aaaa aaaa
adr LSB
adr LSB
adr LSB
adr LSB
adr LSB
Byte 3
$00
$00
$00
$00
$00
$00
$00
$00
/
high data byte out
low data byte out
high data byte in
low data byte in
data byte out
data byte out
data byte out
data byte out
data byte out
data byte out
data byte out
data byte out
data byte in
LSB
LSB
Byte4
$00
$00
$00
$00
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