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SPEAR320 Folha de dados(PDF) 26 Page - STMicroelectronics

Nome de Peças SPEAR320
Descrição Electrónicos  Embedded MPU with ARM926 core, optimized for factory automation and consumer applications
PDF  73 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SPEAR320 Folha de dados(HTML) 26 Page - STMicroelectronics

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Pin description
SPEAr320
26/73
Doc ID 16755 Rev 5
4
Pin description
The following tables describe the pinout of the SPEAr320 listed by functional block.
List of abbreviations:
PU = Pull Up
PD = Pull Down
4.1
Required external components
1.
DDR_COMP_1V8: place an external 121 k
Ω resistor between ball P4 and ball R4
2.
USB_TX_RTUNE: connect an external 43.2
Ω pull-down resistor to ball K5
3.
DIGITAL_REXT: place an external 121 k
Ω resistor between ball G4 and ball F4
4.
DITH_VDD_2V5: Add a ferrite bead to ball M4
4.2
Dedicated pins
Table 3.
Master clock, RTC, Reset and 3.3 V comparator pin descriptions
Group
Signal name
Ball
Direction
Function
Pin type
Master Clock
MCLK_XI
P1
In
24 MHz (typical)
crystal in
Oscillator 2.5 V
capable
MCLK_XO
P2
Out
24 MHz (typical)
crystal out
RTC
RTC_XI
E2
In
32 kHz crystal in
Oscillator 1V5
capable
RTC_XO
E1
Out
32 kHz crystal out
Reset
MRESET
M17
In
Main Reset
TTL Schmitt
trigger input
buffer, 3.3 V
tolerant
3.3 V Comp.
DIGITAL_REXT
G4
Out
Configuration
Analog, 3.3 V
capable
DIGITAL_GNDBG
COMP
F4
Power
Power
Power
Table 4.
Power supply pin description
Group
Signal name
Ball
Value
DIGITAL
GROUND
GND
G6 G7 G8 G9 G10 G11 H6
H7 H8 H9 H10 H11 J6 J7
J8 J9 J10 J11 K6 K7 K8 K9
K10 K11 L6 L7 L8 L9 L10
M8 M9 M10
0 V
USB_HOST1_HOST0_DEVICE_DVSS
L5



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