ATMEGA3290P-20AUR Atmel, ATMEGA3290P-20AUR Datasheet - Page 309
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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27.7.13
27.7.14
27.7.15
8021G–AVR–03/11
Reading the Signature Bytes
Reading the Calibration Byte
Parallel Programming Characteristics
Figure 27-6. Mapping Between BS1, BS2 and the Fuse and Lock Bits During Read
The algorithm for reading the Signature bytes is as follows (refer to
page 303
1. A: Load Command “0000 1000”.
2. B: Load Address Low Byte (0x00 - 0x02).
3. Set OE to “0”, and BS1 to “0”. The selected Signature byte can now be read at DATA.
4. Set OE to “1”.
The algorithm for reading the Calibration byte is as follows (refer to
page 303
1. A: Load Command “0000 1000”.
2. B: Load Address Low Byte, 0x00.
3. Set OE to “0”, and BS1 to “1”. The Calibration byte can now be read at DATA.
4. Set OE to “1”.
Table 27-15. Parallel Programming Characteristics, V
Symbol
V
I
t
t
t
t
t
t
t
PP
DVXH
XLXH
XHXL
XLDX
XLWL
XLPH
PLXH
PP
for details on Command and Address loading):
for details on Command and Address loading):
Parameter
Programming Enable Voltage
Programming Enable Current
Data and Control Valid before XTAL1 High
XTAL1 Low to XTAL1 High
XTAL1 Pulse Width High
Data and Control Hold after XTAL1 Low
XTAL1 Low to WR Low
XTAL1 Low to PAGEL high
PAGEL low to XTAL1 high
Extended Fuse Byte
Fuse Low Byte
Fuse High Byte
Lock Bits
BS2
BS2
0
1
0
1
CC
ATmega329P/3290P
= 5V ± 10%
BS1
11.5
Min
0
1
200
150
150
67
67
0
0
”Programming the Flash” on
”Programming the Flash” on
Typ
DATA
Max
12.5
250
Units
μA
ns
ns
ns
ns
ns
ns
ns
V
309
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