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SPEAR300 Folha de dados(PDF) 29 Page - STMicroelectronics

Nome de Peças SPEAR300
Descrição Electrónicos  Embedded MPU with ARM926 core, flexible memory support, powerful connectivity features and human machine interface
PDF  83 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SPEAR300 Folha de dados(HTML) 29 Page - STMicroelectronics

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SPEAr300
Pin description
Doc ID 16324 Rev 2
29/83
3
Pin description
The following tables describe the pinout of the SPEAr300 listed by functional block.
List of abbreviations:
PU = Pull Up
PD = Pull Down
3.1
Required external components
1.
DDR_COMP_1V8: place an external 121 k
resistor between ball P4 and ball R4
2.
USB_TX_RTUNE: connect an external 43.2 k
 pull-down resistor to ball K5
3.
DIGITAL_REXT: place an external 121 k
 resistor between ball G4 and ball F4.
3.2
Dedicated pins
Table 2.
Master clock, RTC, Reset and 3.3 V comparator pin descriptions
Group
Signal name
Ball
Direction
Function
Pin type
Master Clock
MCLK_XI
P1
Input
24 MHz (typical)
crystal in
Oscillator 2.5 V
capable
MCLK_XO
P2
Output
24 MHz (typical)
crystal out
RTC
RTC_XI
E2
Input
32 kHz crystal in
Oscillator 1.5 V
capable
RTC_XO
E1
Output
32 kHz crystal out
Reset
MRESET#
M17
Input
Main Reset
TTL Schmitt
trigger input
buffer, 3.3 V
tolerant, PU
3.3 V Comp.
DIGITAL_REXT
G4
Output
Configuration
Analog, 3.3 V
capable
DIGITAL_GND_R
EX
F4
Power
Power
Power
Table 3.
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
ANALOG
GROUND
AGND
F2, G1, J2, L1, L3, L5, N2, N4, P3, R3,N12
0 V
I/O
VDD3
F5, F6, F7, F10, F11, F12, G5, J12, K12, L12, M12
3.3 V



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