ATMEGA3290P-20AUR Atmel, ATMEGA3290P-20AUR Datasheet - Page 300
![MCU AVR 32K FLASH 20MHZ 64TQFP](/photos/6/70/67048/313-100-tqfp_sml.jpg)
ATMEGA3290P-20AUR
Manufacturer Part Number
ATMEGA3290P-20AUR
Description
MCU AVR 32K FLASH 20MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA3290P-20AUR
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
69
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
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
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27.6.1
8021G–AVR–03/11
Signal Names
In this section, some pins of the ATmega329P/3290P are referenced by signal names describ-
ing their functionality during parallel programming, see
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 positive pulse.
The bit coding is shown in
When pulsing WR or OE, the command loaded determines the action executed. The different
Commands are shown in
Figure 27-1. Parallel Programming
Table 27-9.
Programming Mode
Signal Name in
RDY/BSY
PAGEL
DATA
BS1
XA0
XA1
BS2
WR
OE
Pin Name Mapping
RDY/BSY
Table
Pin Name
Table
PAGEL
+12 V
PB7-0
BS2
BS1
XA0
XA1
PD1
PD2
PD3
PD4
PD5
PD6
PD7
WR
PA0
OE
27-12.
27-11.
I/O
I/O
O
PD1
PD2
PD3
PD4
PD5
PD6
PD7
RESET
XTAL1
GND
PA0
I
I
I
I
I
I
I
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).
PB7 - PB0
AVCC
VCC
Figure 27-1
ATmega329P/3290P
+5V
+5V
DATA
and
Table
27-9. Pins not
300
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