ATmega1281R231 Atmel Corporation, ATmega1281R231 Datasheet - Page 339

• Manufacturer Part Number: ATmega1281R231
• Manufacturer: Atmel Corporation

Specifications of ATmega1281R231

• Flash (kbytes): 128 Kbytes
• Max. Operating Frequency: 16 MHz
• Max I/o Pins: 54
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Crypto Engine: AES
• Sram (kbytes): 8
• Eeprom (bytes): 4096
• Operating Voltage (vcc): 1.8 to 3.6
• Timers: 6
• Frequency Band: 2.4 GHz
• Max Data Rate (mb/s): 2
• Antenna Diversity: Yes
• External Pa Control: Yes
• Power Output (dbm): 3
• Receiver Sensitivity (dbm): -101
• Receive Current Consumption (ma): 13.2
• Transmit Current Consumption (ma): 14.4
• Link Budget (dbm): 104

30.6.1
2549N–AVR–05/11
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 30-1. Parallel Programming
Note:
Table 30-9.
Programming Mode
Signal Name in
RDY/BSY
1. Unused Pins should be left floating.
PAGEL
DATA
BS1
XA0
XA1
BS2
WR
OE
Pin Name Mapping
Table 30-13 on page
RDY/BSY
Pin Name
Table 30-12 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
(1)
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 30-1
and
Table 30-
339