ATmega1284PR231 Atmel Corporation, ATmega1284PR231 Datasheet - Page 18
ATmega1284PR231
Manufacturer Part Number
ATmega1284PR231
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT86RF231.pdf
(198 pages)
2.ATMEGA1284PR231.pdf
(380 pages)
3.ATMEGA1284PR231.pdf
(20 pages)
Specifications of ATmega1284PR231
Flash (kbytes)
128 Kbytes
Max. Operating Frequency
20 MHz
Max I/o Pins
32
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)
16
Eeprom (bytes)
4096
Operating Voltage (vcc)
1.8 to 3.6
Timers
3
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
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6.3.1
8059D–AVR–11/09
Data Memory Access Times
The 32 general purpose working registers, 64 I/O registers, 160 Extended I/O Registers and the
16K bytes of internal data SRAM in the ATmega1284P are all accessible through all these
addressing modes. The Register File is described in
10.
Figure 6-2.
This section describes the general access timing concepts for internal memory access. The
internal data SRAM access is performed in two clk
Figure 6-3.
Address
clk
Data Memory Map
On-chip Data SRAM Access Cycles
Data
Data
WR
CPU
RD
Compute Address
160 Ext I/O Reg.
64 I/O Registers
Data Memory
Internal SRAM
32 Registers
T1
Memory Access Instruction
(16K x 8)
Address valid
CPU
T2
”General Purpose Register File” on page
cycles as described in
$40FF
$0000 - $001F
$0100
$0020 - $005F
$0060 - $00FF
Next Instruction
ATmega1284P
T3
Figure
6-3.
18
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