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Evaluation Kit Hardware
4.2.3.6
Serial Peripheral Interface (SPI) Controller
The serial processor provides two high-speed Serial Peripheral Interface (SPI) controllers. One port is
used to interface with the on-board serial DataFlash ? .
Figure 4-5.
SPI
VDDIOP0
R56
470K
MN7
PA14
2
SW1B
SWITCH-2-1.27mm
3
PA12
PA11
PA13
(SPI0_MOSI) R57
(SPI0_MIS0) R58
(SPI0_SPCK) R59
(SPI0_NPCS0)
0R
0R
0R
5
2
6
1
AT25DF321
SI VCC
SO
SCK WP
HOLD
CS
GND
8
3
7
4
VDDIOP0
C69
100nF
4.2.3.7
Two Wire Interface (TWI)
The serial processor has a full speed (400 kHz) master/slave TWI Serial Controller. The controller is
mostly compatible with industry standard I2C and SMBus Interfaces. This port is used to interface with
the on-board Serial EEPROM, ISI, QTouch device and audio codec interface.
Figure 4-6.
TWI
VDDIOP0
R61
VDDIOP0
R62
VDDIOP0
R63
4.7K
4.7K
MN8
10K
2
3
PA31
PA30
(TWCKO)
(TWDO)
VDDIOP0
C70
100nF
6
5
8
4
AT24C512BN-SH25-B
1
SCL A0
SDA A1
A3
VCC
7
GND WP
R64
DNP
4.2.3.8
1-Wire EEPROM
The Evaluation Kit uses a 1-Wire device as “firmware label” to store the information such as chip type,
manufacturer’s name, production date etc.
Figure 4-7.
1-Wire Device
VDDANA
R65
1.5K
MN9
PB18
R66
0R
2
DS2431P+
NC1
IO NC2
NC3
NC4
3
4
5
6
4-10
11115A–ATARM–27-Jul-11
Evaluation Kit (EK) User Guide
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相关PDF资料
AT91SAM9XE-EK
KIT EVAL FOR AT91SAM9XE
AT93C46D-TH-T
IC EEPROM 1KBIT 2MHZ 8TSSOP
AT93C46E-TH-T
IC EEPROM 1KBIT 2MHZ 8TSSOP
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IC EEPROM 1KBIT 2MHZ 8DFN
AT93C56A-10TU-2.7
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