ATmega644R212 Atmel Corporation, ATmega644R212 Datasheet - Page 307
ATmega644R212
Manufacturer Part Number
ATmega644R212
Description
Manufacturer
Atmel Corporation
Specifications of ATmega644R212
Flash (kbytes)
64 Kbytes
Max. Operating Frequency
20 MHz
Max I/o Pins
32
Spi
3
Twi (i2c)
1
Uart
1
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Crypto Engine
AES
Sram (kbytes)
4
Eeprom (bytes)
2048
Operating Voltage (vcc)
1.8 to 3.6
Timers
3
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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8011O–AVR–07/10
Figure 24-7. Parallel Programming Timing, Including some General Timing Requirements
Figure 24-8. Parallel Programming Timing, Loading Sequence with Timing Requirements
Note:
Figure 24-9. Parallel Programming Timing, Reading Sequence (within the Same Page) with
Note:
(DATA, XA0/1, BS1, BS2)
1. The timing requirements shown in
1. The timing requirements shown in
XTAL1
DATA
PAGEL
XTAL1
BS1
XA0
XA1
DATA
OE
also apply to loading operation.
also apply to reading operation.
BS1
XA0
XA1
Data & Contol
Timing Requirements
RDY/BSY
PAGEL
XTAL1
ADDR0 (Low Byte)
LOAD ADDRESS
ADDR0 (Low Byte)
LOAD ADDRESS
WR
(LOW BYTE)
(LOW BYTE)
t
XLOL
t
OLDV
t
t
BVPH
DVXH
(1)
LOAD DATA
(LOW BYTE)
DATA (Low Byte)
t
t
XHXL
PHPL
(LOW BYTE)
DATA (Low Byte)
Figure 24-7 on page 307
READ DATA
Table 24-7 on page 307
t
t
t
t
t
XLXH
XLDX
XLWL
PLBX
PLWL
ATmega164P/324P/644P
t
BVDV
t
(HIGH BYTE)
LOAD DATA
BVWL
DATA (High Byte)
(HIGH BYTE)
READ DATA
DATA (High Byte)
t
XLPH
t
WLWH
LOAD DATA
WLRL
(that is, t
(that is, t
t
OHDZ
t
PLXH
t
WLBX
DVXH
DVXH
LOAD ADDRESS
LOAD ADDRESS
(LOW BYTE)
(LOW BYTE)
ADDR1 (Low Byte)
ADDR1 (Low Byte)
, t
, t
XHXL
XHXL
, and t
, and t
t
WLRH
XLDX
XLDX
(1)
307
)
)
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