ATmega2561R212 Atmel Corporation, ATmega2561R212 Datasheet - Page 28
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ATmega2561R212
Manufacturer Part Number
ATmega2561R212
Description
Manufacturer
Atmel Corporation
Specifications of ATmega2561R212
Flash (kbytes)
256 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
700/800/900MHz
Max Data Rate (mb/s)
1
Antenna Diversity
No
External Pa Control
Yes
Power Output (dbm)
10
Receiver Sensitivity (dbm)
-110
Receive Current Consumption (ma)
9.0
Transmit Current Consumption (ma)
18 at 5dBm
Link Budget (dbm)
120
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9. External Memory Interface
9.1
2549N–AVR–05/11
Overview
With all the features the External Memory Interface provides, it is well suited to operate as an
interface to memory devices such as External SRAM and Flash, and peripherals such as LCD-
display, A/D, and D/A. The main features are:
•
•
•
•
When the eXternal MEMory (XMEM) is enabled, address space outside the internal SRAM
becomes available using the dedicated External Memory pins (see
13-3 on page
tion is shown in
Figure 9-1.
Four different wait-state settings (including no wait-state)
Independent wait-state setting for different External Memory sectors (configurable sector size)
The number of bits dedicated to address high byte is selectable
Bus keepers on data lines to minimize current consumption (optional)
78,
External Memory with Sector Select
Figure
Table 13-9 on page
9-1.
External Memory
(0 - 60K x 8)
ATmega640/1280/1281/2560/2561
82, and
Memory Configuration A
Internal memory
Lower sector
Upper sector
Table 13-21 on page
SRW01
SRW00
SRW11
SRW10
0x0000
0x21FF
0x2200
0xFFFF
SRL[2..0]
Figure 1-3 on page
90). The memory configura-
4,
Table
28
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