ATmega1284PR231 Atmel Corporation, ATmega1284PR231 Datasheet - Page 13

• Manufacturer Part Number: ATmega1284PR231
• Manufacturer: Atmel Corporation

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

Table 5-1.
Note:
8111C–MCU Wireless–09/09
Designator
B1
B1
(alternatively)
CB1
CB3
CB2
CB4
CX1, CX2
C1, C2
C3
C4
R1
XTAL
(optional)
Please note that pins DIG1...4 are connected to the ground in the Basic Application Schematic, refer to
Special programming of these pins require a different schematic, refer to
page
14.
Description
SMD balun
SMD balun / filter
LDO VREG
bypass capacitor
Power Supply decoupling
Crystal load capacitor
RF coupling capacitor
CLKM low-pass
filter capacitor
RF matching
CLKM low-pass
filter resistor
Crystal
Example Bill of Materials (BoM) for Basic Application Schematic
routed as short as possible and not in proximity of digital I/O signals. This is especially required
for the High Data Rate Modes, refer to
Crosstalk from digital signals on the crystal pins or the RF pins can degrade the system perfor-
mance. Therefore, a low-pass filter (C3, R1) is placed close to the CLKM output pin to reduce
the emission of CLKM signal harmonics. This is not needed if the CLKM pin is not used as a
microcontroller clock source. In that case, the output should be turned off during device
initialization.
The ground plane of the application board should be separated into four independent fragments,
the analog, the digital, the antenna and the XTAL ground plane. The exposed paddle shall act as
the reference point of the individual grounds.
CX-4025 16 MHz
SX-4025 16 MHz
2.45 GHz
2.45 GHz
0.47 pF
2.2 pF
Value
12 pF
22 pF
680Ω
1 µF
Manufacture
Wuerth
Johanson
Technology
AVX
Murata
AVX
Murata
Epcos
Epcos
AVX
AVX
Murata
ACAL Taitjen
Siward
Section 11.3 “High Data Rate Modes” on page
Part Number
748421245
2450FB15L0001
0603YD105KAT2A
GRM188R61C105KA12D
06035A120JA
GRP1886C1H120JA01
B37930
B37920
06035A220JAT2A
06035A229DA
GRP1886C1H2R0DA01
XWBBPL-F-1
A207-011
“Extended Feature Set Application Schematic” on
Comment
2.45 GHz Balun
2.45 GHz Balun / Filter
X5R
(0603)
COG
(0603)
COG
(0402 or 0603)
COG
(0603)
Designed for f
Depends on final PCB
implementation
Designed for f
AT86RF231
Figure 5-1 on page
10%
5%
5%
±0.5 pF
CLKM
CLKM
137.
=1 MHz
=1 MHz
16V
50V
12.
13