ATMEGA2561-16AI Atmel, ATMEGA2561-16AI Datasheet - Page 339
ATMEGA2561-16AI
Manufacturer Part Number
ATMEGA2561-16AI
Description
IC AVR MCU 256K 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA2561-16AI
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
256KB (128K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Manufacturer
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29.6.1
2549M–AVR–09/10
Signal Names
In this section, some pins of the ATmega640/1280/1281/2560/2561 are referenced by signal
names describing their functionality during parallel programming, see
9. Pins not 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 29-1. Parallel Programming
Note:
Table 29-9.
Programming Mode
Signal Name in
RDY/BSY
Unused Pins should be left floating.
PAGEL
DATA
BS1
XA0
XA1
BS2
WR
OE
Pin Name Mapping
Table 29-13 on page
RDY/BSY
Pin Name
Table 29-12 on page
PAGEL
PB7-0
+12V
PD1
PD2
PD3
PD4
PD5
PD6
PD7
BS1
XA0
XA1
BS2
PA0
WR
OE
ATmega640/1280/1281/2560/2561
(Note:)
I/O
I/O
PD1
PD2
PD3
PD4
PD5
PD6
PD7
RESET
XTAL1
GND
O
PA0
I
I
I
I
I
I
I
Program Memory and EEPROM data Page Load.
Bi-directional Data bus (Output when OE is low).
Function
0: Device is busy programming, 1: Device is ready for
new command.
Output Enable (Active low).
Write Pulse (Active low).
Byte Select 1.
XTAL Action Bit 0
XTAL Action Bit 1
Byte Select 2.
340.
340.
PB7 - PB0
AVCC
VCC
+5V
+5V
DATA
Figure 29-1
and
Table 29-
339
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