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参数资料
| 型号： | ATMEGA1284P-XPLD |
| 厂商： | Atmel |
| 文件页数： | 7/15页 |
| 文件大小： | 0K |
| 描述： | MEGA-1284P XPLAINED EVAL KIT |
| 标准包装： | 1 |
| 系列： | AVR® MEGA-1284P Xplained |
| 类型： | MCU |
| 适用于相关产品： | ATMEGA1284P |
| 所含物品： | 板 |
AVR364
Please note that programming the Atmel AT32UC3B1256 using a programming
tool will erase the boot loader.
Please refer to the Atmel application note, AVR370: MEGA-1284P Xplained
Getting Started Guide, for more details regarding how to program the onboard
microcontrollers.
4.2 I/O expansion headers
There are four available I/O expansion headers in the kit. Because of the low pin
count on the device, the I/O expansion header pins are shared with onboard
functionality. If “clean” expansion ports are needed, cut-straps are available to
remove onboard functionality. Table 4-2 through Table 4-5 show what is shared on
the respective header pins.
Table 4-2. Atmel MEGA-1284P Xplained I/O expansion header – J1.
Pin
1
2
3
4
J1
TWI SDA
TWI SCL
USART RXD0
USART TXD0
ATmega1284P pin
PC1
PC0
PD0
PD1
Shared with onboard functionality
Header J4, board controller
Header J4, board controller
Header J4
Header J4
5
SPI SS
(1)
PB4
Board controller
6
7
SPI MOSI
SPI MISO
(1)
(1)
PB5
PB6
Header J4, DataFlash, board controller
Header J4, DataFlash, board controller
8
SPI SCK
(1)
PB7
Header J4, DataFlash, board controller
9
10
GND
VCC_P3V3
-
-
-
-
Note:
1. These signals can be disconnected from the board controller by cutting the cut-
straps marked SPI on the bottom side of the board.
Table 4-3. MEGA-1284P Xplained I/O expansion header – J2.
Pin
J2
ATmega1284P pin
Shared with onboard functionality
1
2
3
4
5
6
7
8
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
(1)
(2)
(2)
(2)
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
Possible to connect to AREF
-
-
-
-
Filter output
Light sensor
NTC sensor
9
10
GND
VCC_ANA_P3V3
-
-
-
-
Notes:
1. AREF with 100nF capacitor to GND can be connected to ADC0 by shorting two
pads marked EXTERNAL AREF on the bottom side of the board.
2. These signals can be disconnected from the sensor/filter output by cutting the
cut-straps marked SENSORS & FILTER on the bottom side of the board.
7
8377B-AVR-11/11
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